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SCXI-1160 User Manual - National Instruments

1. 20 to 70 C 5 to 90 noncondensing Designed in accordance with UL 3121 1 for installation category II pollution degree 2 for altitudes up to 2000 m A 2 National Instruments Corporation Appendix B Rear Signal Connector This appendix describes the pinout and signal names for the SCXI 1160 50 pin rear signal connector including a description of each connection Figure B 1 shows the pin assignments for the SCXI 1160 rear signal connector DIG GND MIO SERDATIN SERDATOUT MIO DAQD A SLOTOSEL DIO SERCLK MIO SERCLK DIO SERDATOUT DIG GND DIO Figure B 1 SCXI 1160 Rear Signal Connector Pin Assignment National Instruments Corporation B 1 SCXI 1160 User Manual Rear Signal Connector Appendix B Rear Signal Connector Signal Descriptions Pin 24 or 50 25 26 or 47 27 29 31 or 37 Signal Name DIG GND SERDATIN SERDATOUT DAQD A SLOTOSEL SERCLK Description Digital Ground Supplies the reference for data acquisition board digital signals and is tied to the module digital ground Pin 50 is for DIO boards Pin 24 is for MIO boards and jumper W3 selects it Serial Data In Taps into the SCXIbus MOSI line to provide serial input data to a module or Slot 0 Serial Data Out Taps into the SCXIbus MISO line to accept serial output data from a module Pin 47 is for DIO boards Pin 26 is for MIO boards and jumper W2 selects it Data Acquisition Bo
2. 3 4 to 3 5 timing requirements and communication protocol See communication signals U unpacking the SCXI 1160 module 1 4 National Instruments Corporation Index 11 SCXI 1160 User Manual Index V V signal 3 4 C 3 V signal 3 4 C 3 5 V signal 3 4 voltage hazardous See hazardous voltage cautions SCXI 1160 User Manual Index 12 National Instruments Corporation
3. Input B19 MISO Master In Slave Out Transmits data from the module to the SCXIbus Open collector I O C19 D A Data Address Indicates to the module whether address information or data information is being sent to the module on MOSI Open collector I O D19 INTR Interrupt Active low Causes data that is on MOSI to be written to the Slot Select Register Slot 0 Open collector Output A20 B20 C20 V Negative Analog Supply 18 5 to 25 V D20 A22 B22 C22 V Positive Analog Supply 18 5 to 25 V D22 A23 D23 5 V 5 VDC Source Digital power supply B23 SPICLK Serial Peripheral Interface SPI Clock Clocks the serial data on the MOSI and MISO lines Open collector I O C23 MOSI Master Out Slave In Transmits data from the SCXIbus to the module Open collector I O B24 SS Slot Select When low enables module communication over the SCXIbus Totem pole Input All other pins are not connected Further information is given in Chapter 3 Theory of Operation National Instruments Corporation C3 SCXI 1160 User Manual Appendix D SCXI 1160 Front Connector This appendix describes the pinout and signal names for the SCXI 1160 front connector including a description of each connection Figure D 1 shows the pin assignments for the SCXI 1160 front connector Pin Signal Column Signal Number Name A B C Name NU RAAN Figure D 1 SCXI 1160 Front Connector Pin A
4. M manual See documentation MISO signal digital signal connections 2 6 jumper connection 2 5 SCXIbus connector 3 4 C 3 Module ID Register 4 3 definition 3 7 description 4 3 jumper connections 2 5 2 6 reading from Module ID Register 2 23 to 2 24 timing diagram 2 24 MOSI signal SCXIbus connector 3 4 C 3 Slot Select Register 4 8 writing to Data Register 3 7 National Instruments Corporation Index 5 SCXI 1160 User Manual Index N NBS See SCXI 1351 and NBS NC connection relay channels 3 7 NC lt 15 0 gt bit Data Register 4 4 NC lt 15 0 gt signal front connector 2 10 D 2 NI DAQ software 1 2 1 3 NO connection relay channels 3 7 NO lt 15 0 gt bit Data Register 4 4 NO lt 15 0 gt signal front connector 2 10 D 2 O operating environment specifications A 2 operation of SCXI 1160 See theory of operation P Parking Register 4 5 parts locator diagram detailed 2 3 general 2 2 SCXI 1324 terminal block 2 14 PC LPM 16 adapter board See SCXI 1342 PC LPM 16 adapter board physical specifications A 2 pin assignments front connector 2 9 D 1 rear signal connector 2 16 B 1 SCXI 1343 rear screw terminal adapter E 15 to E 16 SCXIbus connector 3 3 C 2 pin equivalences rear signal connector to data acquisition boards 2 19 SCXI 1160 and board pinout equivalences E 2 SCXI 1160 and DIO 96 board pinout equivalences E 7 SCXIbus connector to rear signal connector 3 5 SCXIbus to SCX
5. Vin volts input high Vi volts input low Vin volts in Vou volts output high VoL volts output low Vout volts out VAC volts alternating current VDC volts direct current Vrms volts root mean square W watts SCXI 1160 User Manual Glossary 2 National Instruments Corporation Index Numbers Symbols 5 V signal 3 4 C 3 A Address Handler 4 1 to 4 2 definition 3 6 purpose and use 4 1 to 4 2 register addresses 4 1 to 4 2 timing diagram 2 22 writing to Address Handler 2 21 to 2 22 analog backplane protection 3 8 arc suppression See contact protection Aromat relays contacts F 2 to F 6 electronic circuit drive F 6 B backplane protection 3 8 C cabling custom cables optional 1 3 to 1 4 DIO 96 board connection SCXI 1160 and DIO 96 board pinout equivalences E 7 SCXI 1351 and NB5 cable assembly and installation E 6 to E 8 SCXI 1180 feedthrough panel cable assembly E 10 installation E 10 to E 12 SCXI 1302 50 pin terminal block installation E 13 wiring procedure E 12 SCXI 1340 cable assembly E 1 to E 2 installation E 2 to E 3 SCXI 1160 and board pinout equivalences E 2 SCXI 1341 Lab NB Lab PC or Lab PC cable assembly E 3 installation E 4 pin translations E 4 National Instruments Corporation Index 1 SCXI 1160 User Manual Index SCXI 1342 PC LPM 16 adapter board cable assembly E 5 installation E 6 pin translations E 5 SCXI 1343 rear screw terminal adapter installat
6. fax technical support G 1 front connector 2 9 to 2 12 contact protection 2 10 to 2 12 arc suppressor pad locations 2 12 COM to NC arc suppressor placement 2 12 COM to NO arc suppressor placement 2 11 using flyback diode 2 11 pin assignments 2 9 D 1 signal descriptions 2 10 D 2 G gold plating on relay 2 8 H hazardous voltage cautions SCXI 1160 module 2 4 SCXI 1324 terminal block 2 13 inductive load connections See contact protection initialization of SCXI 1160 module 5 3 installation hardware installation 2 7 to 2 8 SCXI 1180 feedthrough panel E 10 to E 12 SCXI 1302 50 pin terminal block E 13 SCXI 1324 terminal block 2 15 SCXI 1340 E 2 to E 3 SCXI 1341 Lab NB Lab PC or Lab PC E 4 SCXI 1342 PC LPM 16 adapter board E 6 SCXI 1343 rear screw terminal adapter E 15 SCXI 1344 Lab LC E 4 SCXI 1348 DIO 32F adapter board E 10 SCXI 1351 and NBS E 7 to E 8 SCXI 1351 one slot cable extender E 13 unpacking the SCXI 1160 module 1 4 INTR signal SCXIbus connector 3 4 C 3 SCXI 1160 User Manual Index 4 National Instruments Corporation Index J jumper configuration digital signal connections and jumper settings 2 6 to 2 7 overview 2 5 parts locator diagram detailed 2 3 general 2 2 W1 and WS 2 5 to 2 6 W2 W3 and W4 2 7 L Lab LC See SCXI 1344 Lab LC Lab NB Lab PC or Lab PC See SCXI 1341 Lab NB Lab PC or Lab PC LabVIEW software 1 2 1 3 LabWindows software 1 2 1 3
7. 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 l 0 Bit Name Descripion 31 16 NC lt 15 0 gt Normally Closed x These bits determine the state of the relays If set to 0 the relays stay in their previous positions or respond to the NO x state If set to 1 and the NO x is set to 0 the NO position on the relay opens and the COM connects to the NC position 15 0 NO lt 15 0 gt Normally Open x These bits determine the state of the relays If set to 0 the relays stay in their previous positions or respond to the NC x If set to 1 and the NC x is set to 0 the NC position on the relay opens and the COM connects to the NO position Note A value of NC x 1 and NO x 1 is not valid x indicates a given relay number SCXI 1160 User Manual 4 4 National Instruments Corporation Chapter 4 Register Descriptions Status Register The Status Register is a 1 bit read only register that is located at address 0002 hexadecimal When this bit is high it indicates that the relays are finished switching and you can perform further operations If this bit is low the relays are still switching wait until the status bit goes high again before you perform any further task with these relays After each write operation to the Data Register it is recommended that you poll and check the Status Register Select the Status Register in the same manner as the other two registers by writing its address t
8. 9 SCXI 1160 User Manual SCXI 1160 Cabling Appendix E SCXI 1348 Installation Follow these steps to install the SCXI 1348 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module to which the SCXI 1348 will connect 3 Connect one end of the ribbon cable to the adapter board rear connector 4 Plug the adapter board front connector onto the module rear signal connector A corner of the adapter board will enter the upper board guide of the chassis 5 Screw the rear panel to the threaded strips in the rear of the chassis 6 Connect the loose end of the ribbon cable to the DIO 32F I O connector Check the installation SCXI 1180 Feedthrough Panel The SCXI 1180 feedthrough panel provides front panel access to the signals of any data acquisition board that uses a 50 pin I O connector The SCXI 1180 consists of a front panel with a 50 pin male front panel connector that occupies one slot in the SCXI chassis and a ribbon cable with a female rear connector and a male breakout connector You can attach the rear connector to the male breakout connector of an SCXI 1340 SCXI 1341 SCXI 1342 SCXI 1344 or SCXI 1351 in the adjacent slot The breakout connector further extends the cabling scheme The front panel connector has the feedthrough connection You can attach an SCXI 1302 terminal block to the front panel connector for simple screw terminal connections A rear filler panel that shields and protects th
9. 96 User Manual 320289 01 e PC LPM 16 User Manual part number 320287 01 e SCXI 1000 1001 User Manual part number 320423 01 Customer Communication National Instruments wants to receive your comments on our products and manuals We are interested in the applications you develop with our products and we want to help if you have problems with them To make it easy for you to contact us this manual contains comment and configuration forms for you to complete These forms are in Appendix G Customer Communication at the end of this manual National Instruments Corporation xiii SCXI 1160 User Manual Chapter 1 Introduction This chapter describes the SCXI 1160 lists the contents of your SCXI 1160 kit describes the optional software optional equipment and custom cables and explains how to unpack the SCXI 1160 kit Figure 1 1 shows the SCXI 1160 module Figure 1 1 SCXI 1160 Relay Module The SCXI 1160 module consists of 16 isolated single pole double throw SPDT or form C latching relay channels The SCXI 1160 is a module for switching and controlling The SCXI 1160 operates with full functionality with National Instruments MIO 16 boards Lab NB Lab PC Lab PC Lab LC and PC LPM 16 boards and with the DIO 24 DIO 32F and DIO 96 boards You can also use the SCXI 1160 with other systems that comply with the specifications given in Chapter 2 Configuration and Installation You can control several SCXI 1160s in a s
10. Contact performance conspicuously influenced by contact material and voltage and current values applied to the contacts in particular the voltage and current waveforms at the time of application and release the type of load frequency of switching ambient atmosphere form of contact contact switching speed and of bounce Because of contact transfer welding Appendix F abnormal wear increase in contact resistance and the various other damages which bring about unsuitable operation the following items require full investigation 1 Contact circuit voltage current and load Voltage AC and DC When there is inductance included in the circuit a rather high counter emf is generated as a contact circuit voltage and since to the extent of the value of that voltage the energy applied to the contacts causes damage with con sequent wear of the contacts and transfer of the contacts it is necesary to exercise care with regard to control capacity In the case of DC there is no zero current point such as there is with AC and accordingly once a cathode arc has been generated because it is difficult to quench that arc the extended SCXI 1160 User Manual time of the arc is a major cause In addition due to the direction of the current being fixed the phenomenon of contact shift as noted separately below occurs in relation to the contact wear Ordinarily the approximate control capacity is mentioned in ca
11. DAQD A and is equivalent to the SCXIbus D A line It indicates to the module whether the incoming serial stream on SERDATIN is data DAQD A 0 or address DAQD A 1 information e Pin 29 is SLOTOSEL and is equivalent to the SCXIbus INTR line It indicates whether the data on the SERDATIN line is being sent to Slot 0 SLOTOSEL 0 or to a module SLOTOSEL 1 e Pin 24 or 50 is the digital ground reference for the data acquisition board digital signals and is tied to the module digital ground via jumper W3 Pins 24 and 50 are not tied together Pin 24 is for MIO type boards with jumpers W2 W3 and W4 in the MIO position Pin 50 is for DIO type boards with jumpers W2 W3 and W4 in the DIO position e Pin 31 or 37 is SERCLK and is equivalent to the SCXIbus SPICLK line These pins clock the serial data on the SERDATIN line into the module registers Pins 31 and 37 are not tied together Pin 31 is for DIO type boards with jumpers W2 W3 and W4 in the DIO position Pin 37 is for MIO type boards with jumpers W2 W3 and W4 in the MIO position The digital output signal is pin 26 or 47 e Pin 26 or 47 is SERDATOUT and is equivalent to SCXIbus MISO when jumper W5 is in position 1 Pins 26 and 47 are not tied together Pin 26 is for MIO type boards with jumpers W2 W3 and W4 in the MIO position Pin 47 is for DIO type boards with jumpers W2 W3 and W4 in the DIO position When you configure the SCXI 1160 for an MIO typ
12. ID R giste Len an Set nn Tan ere nt Sie 4 3 Data RESUS 160s sn anat Ma nn he E E S RERE R 4 4 Stat s RE DIS tt ii nana nee ideas he ane les 4 5 PATRIHS R DISLET essential int Genus E 4 6 Slot O Register D SCHDHONS ESS RS ne ne Rs du ee 4 7 DIO SCIE ROPISI T sns cca eve danois Mende its 4 8 Chapter 5 Prosrammint cul chee i ee Ae ected 5 1 Programming Considerations x sanitaire 5 1 NOTATION pecs nu fede latest nn EN destined an ane ni nn eda ean 5 1 Resister Wite Suari ne E a nn tater aaa a 5 1 Register Selection and Write Procedure ccceeesceeseceesteeeeneeeeneeees 5 2 WTAE AL AON sence nn esa cae tsa aed A create ad dt as 5 3 Exa mples ss shiat vi a e REE E E A T AETA E A ESE 5 3 Example eae eae oii E E E and alate tee E EE OEE aos a 5 4 Example Dy ae a ea ANS aa aain 5 4 Example SR ue nn RS A A ns S 5 5 Appendix A Specifications soc A ia oe ease a Sas TN a tts besa ae cee Si at A 1 Contact Ratnasari ST Sd A Re Et tes A 1 PHYSICAL ss na E E A E N E E EE E E oes A 2 Operating Environment sisi sccciscssessacecss seca a kisii o Aen KE AE A T AE A 2 Storage ENVIRONMENT Sn st ee e i e ee EEOSE E SESEO A 2 Appendix B Rear Signal Connector sic fucks cosh en en A Re nn Aaa B 1 Rear Signal Connector Signal Descriptions eecceeeeceeeseceeeteeeesteeeenaeeeenes B 2 Appendix C SCXIbus Connector 45 til chanted aetna nn C 1 SCXIbus Connector Signal Descriptions eee eceeseceseceseeeeeeeeneesnaeenseensees C 3 App
13. Interrupt Active low Causes data that is on MOSI to be written to the Slot Select Register Slot 0 Open collector Output A20 B20 C20 V Negative Analog Supply 18 5 to 25 V D20 A22 B22 C22 V Positive Analog Supply 18 5 to 25 V D22 A23 D23 5 V 5 VDC Source Digital power supply B23 SPICLK Serial Peripheral Interface SPI Clock Clocks the serial data on the MOSI and MISO lines Open collector I O C23 MOSI Master Out Slave In Transmits data from the SCXIbus to the module Open collector I O B24 SS Slot Select When low enables module communication over the SCXIbus Totem pole Input All other pins are not connected MOSI MISO SPICLK and SS form a synchronous communication link that conforms with SPI using an idle high clock and second edge data latching D A INTR and RESET are additional control signals When the module is in an SCXI 1000 or SCXI 1001 chassis the data acquisition board via the module rear signal connector must tap into the open collector backplane signal lines as a master to write to the module The signal connections from the rear signal connector to the backplane are shown in Table 3 1 SCXI 1160 User Manual 3 4 National Instruments Corporation Chapter 3 Theory of Operation Table 3 1 SCXIbus Equivalents for the Rear Signal Connector Rear Signal Connector SCXIbus Equivalent Signal SERDATIN MOSI DAQD A D A SLOTOSEL INTR SER
14. O signal connections 2 18 reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 rear signal connector 2 17 B 2 Slot Select Register 4 8 writing the slot select number 2 20 to 2 21 writing to Address Handler 2 21 to 2 22 writing to Data Register 2 22 to 2 23 5 2 to 5 3 software optional 1 2 to 1 3 SCXI 1160 User Manual Index 10 National Instruments Corporation Index specifications contact ratings A 1 digital I O signal connections 2 19 operating environment A 2 physical A 2 storage environment A 2 SPI bus See communication signals SPICLK signal SCXIbus connector 3 4 C 3 writing to Data Register 3 7 SS signal reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 SCXIbus connector 3 4 C 3 writing to Address Handler 2 21 to 2 22 writing to Data Register 2 22 to 2 23 3 7 Status Register 4 5 definition 3 7 description 4 5 jumper connections 2 5 2 6 reading from Status Register 2 24 to 2 25 timing diagram 2 24 to 2 25 storage environment specifications A 2 T technical support G 1 terminal block See SCXI 1302 50 pin terminal block SCXI 1324 terminal block theory of operation block diagram 3 1 digital control circuitry 3 6 to 3 7 digital interface 3 5 to 3 6 functional overview 3 1 to 3 2 relay channels 3 7 to 3 8 SCXIbus connector equivalents for rear signal connector 3 5 pin assignments 3 3 signal descriptions
15. many pullup resistors are attached to the SERDATOUT line the drivers cannot drive the line low See Table 2 1 for the description and configuration of the jumper settings Table 2 1 Digital Signal Connections and Jumper Settings Parking position Factory Setting Connects pullup to SERDATOUT Parking position Factory setting Connects MISO to SERDATOUT continues SCXI 1160 User Manual 2 6 National Instruments Corporation Chapter 2 Configuration and Installation Table 2 1 Digital Signal Connections and Jumper Settings Continued W2 W3 W4 Data acquisition board is a DIO type board W2 W3 W4 Data acquisition board is an MIO type board Using Jumpers W2 W3 and W4 You can use two types of data acquisition boards to communicate with the SCXI 1160 The multifunction I O MIO type boards are National Instruments boards that have both analog and digital inputs and outputs Boards include MIO 16 MIO 16X MIO 16F 5 Lab Series Lab NB Lab PC Lab PC and Lab LC and PC LPM 16 boards The DIO type boards are National Instruments boards that have only digtal inputs and outputs These boards include the DIO 24 DIO 32F and DIO 96 All three jumpers have labels indicating the DIO and the MIO configurations If you want to use the SCXI 1160 with a DIO type board place all three jumpers in the DIO position This position is the factory setting If you want to use the SCXI 1160 with an MIO type board place all
16. signal SCXIbus connector 3 4 C 3 writing to Data Register 3 7 DAQD A signal digital I O signal connections 2 18 reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 rear signal connector 2 17 B 2 writing the slot select number 2 20 to 2 21 writing to Address Handler 2 21 to 2 22 writing to Data Register 2 22 to 2 23 5 2 to 5 3 Data Register 4 4 control of relay channels 3 7 to 3 8 5 1 definition 3 6 description 4 4 register writes 5 1 to 5 2 truth table for resetting and setting relays 4 4 write timing diagram 2 23 writing to Data Register 2 22 to 2 23 3 7 DIGGND signal rear signal connector 2 17 B 2 digital control circuitry diagram 3 6 to 3 7 theory of operation 3 6 to 3 7 digital I O signal connections pin equivalences 2 19 rear signal connector 2 17 to 2 19 specifications and ratings 2 19 digital interface circuitry block diagram 3 5 theory of operation 3 5 to 3 6 DIO 32F adapter board See SCXI 1348 DIO 32F adapter board DIO 96 board connection SCXI 1160 and DIO 96 board pinout equivalences E 7 SCXI 1351 and NB5 cable assembly and installation E 6 documentation conventions used in manual xii organization of manual xi xii related documentation xiii E electrical hazard caution See hazardous voltage cautions equipment optional 1 3 to 1 4 EXTSTROBE register 5 2 to 5 3 National Instruments Corporation Index 3 SCXI 1160 User Manual Index F
17. to the module whether the incoming serial stream is data or address information 29 SLOTOSEL Slot 0 Select Taps into the SCXIbus INTR line to indicate whether the information on MOSI is sent to a module or to Slot 0 31 or 37 SERCLK Serial Clock Taps into the SCXIbus SPICLK line to clock the data on the MOSI and MISO lines Pin 31 is for DIO boards Pin 37 is for MIO boards and jumper W4 selects it All other pins are not connected See the Timing Requirements and Communication Protocol section later in this chapter for more detailed information on timing The signals on the rear signal connector are digital I O signals Signal connection guidelines for each of these groups are given in the following section Digital I O Signal Connections Pins 24 through 27 29 31 37 47 and 50 constitute the digital I O lines of the rear signal connector They are divided into three categories the digital input signals the digital output signals and the digital timing signals The digital input signals are pins 24 or 50 25 27 29 and 31 or 37 The data acquisition board uses these pins to configure the SCXI module that the data acquisition board controls SCXI 1160 User Manual 2 17 National Instruments Corporation Chapter 2 Configuration and Installation Each digital line emulates the SCXIbus communication signals as follows e Pin 25 is SERDATIN and is equivalent to the SCXIbus MOSI serial data input line e Pin 27 is
18. written to the Address Handler This selects a register for writing to or reading from Figure 2 10 illustrates a write to the SCXI 1160 Address Handler of the binary pattern 000000 0 0 0000000 1 This pattern is the address of the Data Register SERDATIN XXX o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 IRR Tdelay SERCLK last rising edge to DAQD Alow 425 nsec Figure 2 10 Address Handler Timing Diagram After the Address Handler has been written to an address line of a register has been asserted Now you can write to the SCXI 1160 Data Register and read from its Module ID Register or Status Register using the following protocols The contents of the Module ID Register are reinitialized by deasserting Slot Select After the 32 bits of data are read from the Module ID Register further data will be zeros until reinitialization occurs The Status Register bit value is updated at the time the relays switch and remains low until the relays finish switching To write to the Data Register follow these steps 1 Initial conditions SS asserted low SERDATIN don t care DAQD A 0 indicates data will be written to a register SLOTOSEL 1 SERCLK 1 and has not transitioned since DAQD A went low 2 For each bit to be written Establish the desired SERDATIN level corresponding to this bit SERCLK 0 SERCLK 1 This rising edge clocks the data 3 Pull DAQD A high This disables further writes to the module Data Register If you wi
19. 0 00000000 00000111 to the Data Register of the SCXI 1160 in Slot 4 3 Following the procedure given in the Register Writes section of this chapter write 00000000 00000000 00000100 10101000 to the Data Register of the SCXI 1160 in Slot 3 SCXI 1160 User Manual 5 4 National Instruments Corporation Chapter 5 Programming Example 3 You have a multichassis system with an SCXI 1160 in Slot 4 of chassis 1 and another SCXI 1160 in Slot 11 of chassis 2 You want to do the following 1 Inchassis 1 connect the NC position to the COM position on channels 1 5 and 8 and connect the NO position to the COM position on channels 3 and 4 2 In chassis 2 connect the NC position to the COM position on channels O through 7 and connect the NO position to the COM position on channels 8 through 15 Leave all other channels unchanged Assuming that the modules are correctly cabled and jumpers W5 and W1 are correctly set do the following 1 Select chassis 1 Slot 4 as described in the Register Writes section of this chapter 2 Following the procedure given in the Register Writes section of this chapter write 00000001 00100010 00000000 00011000 3 Select chassis 2 Slot 11 as described in the Register Writes section of this chapter 4 Following the procedure given in the Register Writes section of this chapter write 00000000 11111111 11111111 00000000 National Instruments Corporation 5 5 SCXI 1160 User Manual Appendix A Sp
20. 351 The SCXI 1351 has the following advantages over the ribbon cable e The SCXI 1351 produces strain relief so that you cannot accidentally disconnect the cable e The SCXI 1351 includes a mounting bracket that mounts to the chassis so that you can remove and reinsert the module without explicitly removing the cable from the back of the chassis This is especially useful when the SCXI chassis is rack mounted making rear access difficult e The SCXI 1351 has an extra female connector for use with the SCXI 1180 feedthrough panel or additional modules or breadboards that need a direct connection to the DIO 96 board e The SCXI 1351 rear panel gives the module and the chassis both mechanical and electrical shielding Table E 4 lists the pin equivalences of the DIO 96 AT MIO 16D and AT MIO 64F 5 board and the SCXI 1162 SCXI 1160 User Manual E 6 National Instruments Corporation Appendix E SCXI 1160 Cabling Table E 4 SCXI 1160 DIO 96 AT MIO 16D and AT MIO 64F 5 Pinout Equivalences SCXI 1160 Rear Signal DIO 96 AT MIO 16D AT MIO 64F 5 Serial Connector Board Equivalent DIG GND MIO DIG GND DIG GND SERDATIN APB3 ADIOO ADIOO SERDATOUT MIO BDIOO BDIOO DAQD A APB2 ADIO ADIO1 SLOTOSEL APBI ADIO2 ADIO2 SERCLK DIO APBO SERCLK MIO EXTSTROBE EXTSTROBE SERDATOUT DIO APAO DIG GND DIO DIG GND No other pins are connected on the SCXI 1160 SCXI 1351 and NBS Cable Installation Follow these steps to install t
21. 4 24 14 089 714 60 35 2686 8505 91805275410 03 6120095 02 4139215 03 5472 2977 02 596 7455 5 520 3282 8 365 8543 0348 430673 32 84 86 00 2265887 91 640 0533 93 582 4370 08 730 43 70 056 200 51 55 02 2737 4644 01635 523154 512 794 5678 Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware and use the completed copy of this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently If you are using any National Instruments hardware or software products related to this problem include the configuration forms from their user manuals Include additional pages if necessary Name Company Address Fax Phone Computer brand Model Processor Operating system Speed MHz RAM MB Display adapter Mouse yes no Other adapters installed Hard disk capacity MB Brand Instruments used National Instruments hardware product model Revision Configuration National Instruments software product Version Configuration The problem is List any error messages The following steps will reproduce the problem SCXI 1160 Hardware Configuration Form Record the settings and revisions of your hardware and softw
22. 41 and SCXI 1344 pin translations National Instruments Corporation E 3 SCXI 1160 User Manual SCXI 1160 Cabling Appendix E Table E 2 SCXI 1341 and 1344 Pin Translations Lab Board Pin Lab Board Signal SCXI 1160 Pin SCXI 1160 Signal ACHO No Connect ACHI No Connect ACH2 No Connect ACH3 No Connect ACH4 No Connect ACHS5 No Connect ACH6 No Connect ACH7 No Connect AIGND No Connect DACOOUT No Connect AOGND No Connect DACIOUT No Connect DGND DIG GND PB4 SERDATIN PBS DAQD A PB6 SLOTOSEL PB7 SERCLK PCI SERDATOUT PC2 No Connect EXTCONV No Connect OUTB1 No Connect 5 V No Connect D IQ BR D All other pins of the Lab board pinout are not sent to the SCXI 1 160 rear signal connector SCXI 1341 and SCXI 1344 Installation Follow these steps to install the SCXI 1341 or SCXI 1344 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module in the chassis 3 Connect one end of the ribbon cable to the adapter board rear connector This is the 50 pin connector of the SCXI 1344 cable 4 Plug the adapter board front connector to the module rear signal connector A corner of the adapter board will enter the upper board guide of the chassis 5 Screw the rear panel to the threaded strips in the rear of the chassis 6 For an SCXI 1341 connect the loose end of the ribbon cable to the Lab NB Lab PC or Lab PC I O connector For an SCXI 1344 connect the two 26 pin connectors to the La
23. 48 DIO 32F cable assembly connects a DIO 32F board to an SCXI 1160 module The SCXI 1348 cable assembly consists of two pieces a 50 conductor shielded ribbon cable that connects the DIO 32F board to the other piece the adapter board The adapter board converts the signals from the DIO 32F I O connector to a format compatible with the SCXI 1160 rear signal connector pinout The adapter board also has an additional male breakout connector that provides the unmodified DIO 32F signals for use with an SCXI 1180 feedthrough panel or SCXI 1181 breadboard module The adapter board gives the DIO 32F full access to the digital control lines Table E 5 lists the SCXI 1348 pin translations SCXI 1160 User Manual E 8 National Instruments Corporation Appendix E SCXI 1160 Cabling Table E 5 SCXI 1348 Pin Translations DIO 32F Pin DIO 32F Signal Rear Signal SCXI 1160 Use Connector Pin No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect DIG GND No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect SERDATOUT No Connect No Connect No Connect No Connect No Connect No Connect DAQD A No Connect No Connect SERCLK SERDATIN No Connect SLOTOSEL OMmAADNBRWNFR National Instruments Corporation E
24. A SLOTOSEL SERCLK No Connect No Connect All other pins of the PC LPM 16 pinout are not sent to the SCXI 1160 rear signal connector National Instruments Corporation E 5 SCXI 1160 User Manual SCXI 1160 Cabling Appendix E SCXI 1342 Installation Follow these steps to install the SCXI 1342 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module to which the SCXI 1342 will connect 3 Connect one end of the ribbon cable to the adapter board rear connector 4 Plug the adapter board front connector onto the module rear signal connector A corner of the adapter board will enter the upper board guide of the chassis 5 Screw the rear panel to the threaded strips in the rear of the chassis 6 Connect the loose end of the ribbon cable to the PC LPM 16 I O connector DIO 96 AT MIO 16D and AT MIO 64F 5 Board Connection To use your SCXI 1160 with a DIO 96 AT MIO 16D or AT MIO 64F 5 board you need an NBS cable The NB5 cable is a ribbon cable with a 100 pin connector that mates with the data acquisition board rear signal connector The other end of the cable is divided into two 50 pin connectors Use positions 1 through 50 of the NB5 connector to control the SCXI 1160 and the SCXIbus via serial communication Positions 51 through 100 of the NB5 cable are not used by the SCXI 1160 for serial communication You may connect the 50 pin connector directly to the SCXI 1160 or you may use an SCXI 1
25. CLK SPICLK SERDATOUT MISO Jumper W5 must be set to position 1 The SCXI 1160 module converts the data acquisition board signals to open collector signals on the backplane of the SCXI chassis For the data acquisition board to talk to a slot the board must first assert the SS for that slot To do this assert INTR low write a 16 bit number over MOSI corresponding to the desired slot and chassis if you are using an SCXI 1001 chassis and then release INTR high At this point the SS of the desired slot is asserted low and the data acquisition board can communicate with the module in that slot according to the SPI protocol Digital Interface Figure 3 3 shows a diagram of the SCXI 1160 and SCXIbus digital interface circuitry SERDATIN Buffered Serial Data DAQD A Digital Interface SLOTOSEL Buffered Digital Signal Controls SERCLK Rear Signal Connector SERDATOUT Figure 3 3 Digital Interface Circuitry Block Diagram National Instruments Corporation 3 5 SCXI 1160 User Manual Theory of Operation Chapter 3 The digital interface circuitry is divided into a data acquisition section and an SCXIbus section The SCXI 1160 connects to the SCXIbus via a 4x24 metral receptacle and to the data acquisition board via a 50 pin ribbon cable header The digital interface circuitry buffers the digital signals from the data acquisition board and the SCXIbus and sends signals back and forth between the data acquisition board and th
26. COM 14 NO 14 SCXIbus Connector NC 15 COM 15 NO 15 Figure 3 1 SCXI 1160 Block Diagram National Instruments Corporation 3 1 SCXI 1160 User Manual Theory of Operation Chapter 3 The major components of the SCXI 1160 are as follows e SCxXIbus connector e Digital interface e Digital control circuitry e Relay channels The SCXI 1160 module is dedicated to switching and controlling power and low level signal sources The theory of operation of each of the SCXI 1160 components is explained in the rest of this chapter SCXIbus Connector Figure 3 2 shows the pinout of the SCXIbus connector SCXI 1160 User Manual 3 2 National Instruments Corporation Chapter 3 Theory of Operation CHSGND CHSGND CHSGND CHSGND V V V 5 V SPICLK SS Figure 3 2 SCXIbus Connector Pin Assignment National Instruments Corporation 3 3 SCXI 1160 User Manual Theory of Operation Chapter 3 SCXIbus Connector Signal Descriptions Pin Signal Name Description A21 B21 C21 CHSGND Chassis Ground Digital and analog ground reference D21 A19 RESET Reset When pulled low reinitializes the module to its power up state Totem pole Input B19 MISO Master In Slave Out Transmits data from the module to the SCXIbus Open collector I O C19 D A Data Address Indicates to the module whether address information or data information is being sent to the module on MOSI Open collector I O D19 INTR
27. I 1160 and Slot 0 Note If you plan to use a programming software package such as NI DAQ LabWindows or LabVIEW with your SCXI 1160 board you do not need to read this chapter Programming Considerations Programming the SCXI 1160 involves writing to the Data Register Programming the data acquisition boards involves writes to their registers See your data acquisition board user manual for more information The programming instructions list the sequence of steps to take The instructions are language independent that is they instruct you to write a value to a given register without presenting the actual code Notation For the bit patterns to be written the following symbols are used 0 binary zero 1 binary one X don t care either zero or one may be written The bit patterns are presented MSB first left to right Register Writes This section describes how to write to the Data Register including the procedure for writing to the Slot Select Register to select the appropriate slot For timing specifics refer to the Timing Requirements and Communication Protocol section in Chapter 2 Configuration and Installation The rear signal connector pin equivalences to the different National Instruments data acquisition boards are given in Table 5 1 See also Appendix E SCXI 1160 Cabling The Data Register is a write only register The different bits in this register control independent relays There are times when you may want to set or r
28. I 1160 rear signal connector to data acquisition board 5 2 pin translations SCXI 1341 Lab NB Lab PC or Lab PC E 4 SCXI 1342 PC LPM 16 adapter board E 5 SCXI 1344 Lab LC E 4 SCXI 1348 DIO 32F adapter board E 9 SCXI 1160 User Manual Index 6 National Instruments Corporation Index programming R examples 5 3 to 5 5 initialization 5 3 notation 5 1 register selection and write procedure 5 2 to 5 3 register writes 5 1 to 5 2 SCXIbus to SCXI 1160 rear signal connector to data acquisition board pin equivalents 5 2 rear signal connector 2 15 to 2 19 digital I O signal connections 2 17 to 2 19 overview 2 15 pin assignments 2 16 B 1 pin equivalences data acquisition board 2 19 SCXIbus connector 3 5 signal descriptions 2 17 B 2 timing requirements and communication protocol 2 19 to 2 25 registers Address Handler 4 1 to 4 2 definition 3 6 register addresses 4 1 to 4 2 timing diagram 2 22 writing to Address Handler 2 21 to 2 22 Data Register control of relay channels 3 7 to 3 8 4 4 5 1 definition 3 6 description 4 4 register writes 5 1 to 5 3 write timing diagram 2 23 writing to Data Register 2 22 to 2 23 3 7 description format 4 1 Module ID Register definition 3 7 description 4 3 jumper connections 2 5 2 6 reading from Module ID Register 2 23 to 2 24 timing diagram 2 24 Parking Register 4 5 programming examples 5 3 to 5 5 initialization 5 3 notation 5 1 register selec
29. Ibus lt signal name gt line or signal The SCXIbus descriptor may be omitted when the meaning is clear Descriptions of all SCXIbus signals are given in Appendix C SCX bus Connector Slot 0 Slot 0 refers to the power supply and control circuitry in the SCXI chassis Abbreviations acronyms metric prefixes mnemonics symbols and terms are listed in the Glossary SCXI 1160 User Manual Xi National Instruments Corporation About This Manual Related Documentation The following documents contain information that you may find helpful as you read this manual e AT DIO 32F User Manual 320147 01 e AT MIO 16 User Manual part number 320476 01 e AT MIO 16F 5 User Manual part number 320266 01 e AT MIO 16X User Manual part number 320488 01 e Lab LC User Manual part number 320380 01 e Lab NB User Manual part number 320174 01 e Lab PC User Manual part number 320205 01 e Lab PC User Manual part number 320502 01 e MC DIO 24 User Manual part number 320129 01 e MC DIO 32F User Manual part number 320128 01 e MC MIO 16 User Manual Revisions A to C part number 320130 01 e MC MIO 16 User Manual Revision D part number 320560 01 e NB DIO 24 User Manual part number 320094 01 e NB DIO 32F User Manual part number 320095 01 e NB DIO 96 User Manual part number 320384 01 e NB MIO 16 User Manual part number 320295 01 e NB MIO 16X User Manual part number 320157 01 e PC DIO 24 User Manual 320288 01 e PC DIO
30. J ire Chase FO ca Sr A S S S ABM 10 0HI2BTASSY 2661 San D IX VR13 VR VRI VR Thumbscrew Project Name Assembly Revision Letter and Serial Number Thumbscrew Terminal Block Mounting Terminal Block Mounting Hole Figure 2 1 SCXI 1160 General Parts Locator Diagram SCXI 1160 User Manual 2 2 National Instruments Corporation Chapter 2 Configuration and Installation ESE 2 an Goo I TEEN NN EE mn FOC 5 HeTaSS goute CRA hys Po ucnseaia fx 19819 Q VIpBSNON UCNS841A T D D O I I Arc Suppressor gt gt gt Ada 10 OvleBlaASsyv 2661 ST NS N S ir OSIIT IX JS Figure 2 2 Detailed Parts Locator Diagram National Instruments Corporation 2 3 SCXI 1160 User Manual Configuration and Installation Chapter 2 The following warnings contain important safety information concerning hazardous voltages Caution A Do not operate the module in an explosive atmosphere or where there may be flammable gases or fumes Keep away from live circuits Do not remove equipment covers or shields unless you are trained to do so If signal wires are connected to the module or terminal block dangerous voltages may exist even when the equipment is turned off To avoid dangerous electrical shock do not perform procedures involving cover or shield removal unless you are qualified to do so Do not oper
31. PECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMERIS RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owneris failure to follow the National Instruments installation operation or maintenance instructions owneris modification of the product ownerfs abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part w
32. SCXI 1160 User Manual 16 Channel Single Pole Double Throw SPDT Relay Module March 1999 Edition Part Number 320513B 01 Copyright 1992 1999 National Instruments Corporation All Rights Reserved Worldwide Technical Support and Product Information www natinst com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 794 0100 Worldwide Offices Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Brazil 011 284 5011 Canada Ontario 905 785 0085 Canada QuEbec 514 694 8521 Denmark 45 76 26 00 Finland 09 725 725 11 France 0 1 48 14 24 24 Germany 089 741 31 30 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico D F 5 280 7625 Mexico Monterrey 8 357 7695 Netherlands 0348 433466 Norway 32 84 84 00 Singapore 2265886 Spain Madrid 91 640 0085 Spain Barcelona 93 582 0251 Sweden 08 587 895 00 Switzerland 056 200 51 51 Taiwan 02 2377 1200 United Kingdom 01635 523545 Warranty The SCXI 1160 is warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software
33. Suppressor Placement COM to NC Channel Number Transient Voltage Suppressor Reference Designator 0 1 2 3 4 5 6 7 8 9 l l l VR1 J Lg Arc Suppressor Pads a NO Figure 2 5 Arc Suppressor Pad Locations Terminal Block A terminal block with screw terminals is available for easy signal connection to the SCXI 1160 inputs This kit is listed in the Optional Equipment section in Chapter 1 Introduction SCXI 1324 Terminal Block The SCXI 1324 terminal block consists of a shielded board with supports to connect it to the SCXI 1160 input connector There are forty eight screw terminals for easy signal connection SCXI 1160 User Manual 2 12 National Instruments Corporation Chapter 2 Configuration and Installation When connecting your signals to the SCXI 1324 for use with the SCXI 1160 follow the labeling as indicated in Figure 2 6 SCX1 1324 Parts Locator Diagram Signal Connection To connect the signal to the terminal block use the following procedure 1 2 D A Remove the grounding screw of the top cover Snap out the top cover of the shield by placing a screwdriver in the groove at the bottom of the terminal block Slide the signal wires one at a time through the front panel strain relief Additional insulation or padding may be added if necessary Connect the wires to the screw terminals Tighten the strain relief by tightening the larger screws Snap the top cover back in place Rep
34. allel switching circuits 0 1V or less 0 2mA or used in low current circuits dry circuits with the load to intentionally raise the less Contact material and of course are low poor conduction is often the load current reaching the contacts Care use of bifurcated contacts must also be result One method to increase reliability is required especially for low level taken into consideration e Avoid Circuits Where Shorts Occur Between Form A and B Contacts Fig 19 1 The clearance between form A and B contacts in compact control components is small The occurrence of shorts due to arcing must be assumed 2 Even if the three N C N O and COM contacts are connected so that they short a circuit must never be designed to allow the possibility of burning or generating an overcurrent 1 R R Contacts for R 3 A forward and reverse motor rotation R _ Double pole relay circuit using switching of form A and B Fig 19 Bad example of form A end B use contacts must never be designed e Shorts Between Different Electrodes Although there is a tendency to select applied between electrodes in a control component itself must be miniature control components because multi pole relay especially when examined and sufficient margin of safety of the trend toward miniaturizing switching two different power supply must be provided especially in creepage electrical control units care must be circuits This is not a problem that can between elec
35. ard Data Address Line Taps into the SCXIbus D A line to indicate to the module whether the incoming serial stream is data or address information Slot 0 Select Taps into the SCXIbus INTR line to indicate whether the information on MOSI is sent to a module or to Slot 0 Serial Clock Taps into the SCXIbus SPICLK line to clock the data on the MOSI and MISO lines Pin 31 is for DIO boards Pin 37 is for MIO boards and jumper W4 selects it See the Timing Requirements and Communication Protocol section in Chapter 2 Configuration and Installation for more detailed information on timing SCXI 1160 User Manual B 2 National Instruments Corporation Appendix C SCXIbus Connector This appendix describes the pinout and signal names for the SCXI 1160 96 pin SCXIbus connector including a description of each connection Figure C 1 shows the pinout of the SCXI 1160 SCXIbus connector National Instruments Corporation C1 SCXI 1160 User Manual SCXIbus Connector Appendix C CHSGND CHSGND CHSGND CHSGND V V V 5 V SPICLK SS Figure C 1 SCXIbus Connector Pin Assignment SCXI 1160 User Manual C2 National Instruments Corporation Appendix C SCXIbus Connector SCXIbus Connector Signal Descriptions Pin Signal Name Description A21 B21 C21 CHSGND Chassis Ground Digital and analog ground reference D21 A19 RESET Reset When pulled low reinitializes the module to its power up state Totem pole
36. are on the line to the right of each item Complete a new copy of this form each time you revise your software or hardware configuration and use this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently SCXI 1160 Revision e Chassis Slot e Chassis Type My Setting Factory Setting e Jumper W1 Ww N e wo N DIO MIO DIO MIO e Jumper W2 E a DIO MIO DIO MIO R a e Jumper W3 DIO MIO DIO MIO E e Jumper W4 e Jumper W5 Ww N e Ww N e Note Mark your jumper positions on the jumper diagrams in the left column e Other Modules and Chassis in System e Data Acquisition Boards Installed Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products This information helps us provide quality products to meet your needs Title SCXI 1160 User Manual Edition Date March 1999 Part Number 320513B 01 Please comment on the completeness clarity and organization of the manual If you find errors in the manual please record the page numbers and describe the errors Thank you for your help Name Title Company Address Phone Mail to Technical Publications Fax to Technical Publications Nati
37. are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this document is accurate The document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND S
38. assis it is important to understand the architecture of the Slot Select Register Although each chassis has its own physical Slot Select Register all are written to at the same time The jumper settings in Slot 0 of a chassis determine with which chassis number Slot 0 is identified From the software perspective only one Slot Select Register exists in a system composed of multiple chassis National Instruments Corporation 4 7 SCXI 1160 User Manual Register Descriptions Chapter 4 Slot Select Register The Slot Select Register contains 16 bits that determine which module in which chassis is enabled for communication when the SLOTOSEL line is high An SCXI 1000 chassis selects the appropriate module in its chassis regardless of the chassis number written The Slot Select Register shifts in the data present on the MOSI line bit 16 first when SLOTOSEL is low Type Write only Word Size 16 bit Bit Map 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 CHS3 CHS2 CHSI CHSO Bit Name Description 15 9 X Don t care bits Unused 8 4 CHS lt 4 0 gt Chassis Bit 4 through 0 These bits determine which chassis is selected On the SCXI 1000 chassis these are don t care bits 3 0 SL lt 3 0 gt Slot Bit 3 through 0 These bits determine which slot in the selected chassis is selected SCXI 1160 User Manual 4 8 National Instruments Corporation Chapter 5 Programming This chapter contains a functional programming description of the SCX
39. ate damaged equipment The safety protection features built into this module can become impaired if the module becomes damaged in any way If it is damaged turn the module off and do not use it until service trained personnel can check its safety If necessary return the module to National Instruments for service and repair to ensure that its safety is not compromised Do not substitute parts or modify equipment Because of the danger of introducing additional hazards do not install unauthorized parts or modify the module Return the module to National Instruments for service and repair to ensure that its safety features are not compromised When using the terminal block with high common mode voltages your signal wires must be insulated appropriately National Instruments is not liable for any damages or injuries resulting from inadequate signal wire insulation When connecting or disconnecting signal lines to the SCXI 1324 terminal block screw terminals the lines must be powered off Potential differences between the lines and the SCXI 1160 ground create a shock hazard while connecting the lines Connections including power signals to ground and vice versa that exceed any of the maximum signal ratings on the SCXI 1160 can result in damage to any or all of the boards connected to the SCXI chassis to the host computer and to the SCXI 1160 module National Instruments is not liable for any damages or injuries resulting from incorrect signal c
40. ation on cabling connectors and adapters Custom Cables The SCXI 1160 rear signal connector is a 50 pin male ribbon cable header The manufacturer part number National Instruments uses for this header is as follows e AMP Inc part number 1 103310 0 National Instruments Corporation 1 3 SCXI 1160 User Manual Introduction Chapter 1 The mating connector for the SCXI 1160 rear signal connector is a 50 position polarized ribbon socket connector with strain relief National Instruments uses a polarized or keyed connector to prevent inadvertent upside down connection to the SCXI 1160 Recommended manufacturer part numbers for this mating connector are as follows e Electronic Products Division 3M part number 3425 7650 e T amp B Ansley Corporation part number 609 5041CE Standard 50 conductor 28 AWG stranded ribbon cables that work with these connectors are as follows e Electronic Products Division 3M part number 3365 50 e T amp B Ansley Corporation part number 171 50 The SCXI 1160 front connector is a special 48 pin DIN C male connector The manufacturer part number National Instruments uses for this connector is as follows e ERNI Components Inc part number 913523 The mating connector for the SCXI 1160 front connector is a special 48 pin reversed DIN C female connector National Instruments uses a polarized and keyed connector to prevent inadvertent upside down connection to the SCXI 1160 The manufacturer part numbe
41. b LC board according to the instructions given in the nstallation section of Chapter 2 Configuration and Installation of the Lab LC User Manual Check the installation SCXI 1160 User Manual E 4 National Instruments Corporation Appendix E SCXI 1160 Cabling SCXI 1342 PC LPM 16 Adapter Board The SCXI 1342 PC LPM 16 cable assembly connects a PC LPM 16 board to an SCXI 1160 module The SCXI 1342 cable assembly consists of two pieces a 50 conductor ribbon cable that connects the PC LPM 16 board to the other piece the adapter board The adapter board converts the signals from the PC LPM 16 I O connector to a format compatible with the SCXI 1160 rear signal connector pinout The adapter board also has an additional male breakout connector that provides the unmodified PC LPM 16 signals for use with an SCXI 1180 feedthrough panel or SCXI 1181 breadboard module The adapter board gives the PC LPM 16 full access to the digital control lines The position of jumper W1 on the SCXI 1342 is irrelevant because the SCXI 1160 does not use jumper W1 Table E 3 lists the SCXI 1342 pin translations Table E 3 SCXI 1342 Pin Translations PC LPM 16 Pin PC LPM 16 Signal Rear Signal SCXI 1160 Use Connector Pin No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect DIG GND SERDATOUT No Connect SERDATIN DAQD
42. bined with the NB Series data acquisition boards with NI DAQ software for Macintosh NI DAQ software for Macintosh which is shipped with all National Instruments Macintosh data acquisition boards comes with language interfaces for SCXI 1160 User Manual 1 2 National Instruments Corporation Chapter 1 Introduction MPW C THINK C Pascal and Microsoft QuickBASIC Any language that uses Device Manager Toolbox calls can access NI DAQ software for Macintosh Part numbers for these software products are as follows LabVIEW for Windows 776670 01 LabWindows Standard package 776473 01 Advanced Analysis Library 776474 01 Standard package with Advanced Analysis Library 776475 01 NI DAQ software for DOS Windows LabWindows 776250 01 LabVIEW for Macintosh 776141 01 NI DAQ software for Macintosh 776181 01 Optional Equipment Equipment Part Number SCXI 1324 front terminal block 776573 24 SCXI 1340 cable assembly 776574 40 SCXI 1341 Lab NB Lab PC Lab PC cable assembly 776574 41 SCXI 1342 PC LPM 16 cable assembly 776574 42 SCXI 1343 rear screw terminal adapter 776574 43 SCXI 1344 Lab LC cable assembly 776574 44 SCXI 1351 one slot extender cable 776575 51 SCXI 1348 DIO 32F cable assembly 776574 48 Standard ribbon cable 0 5m 180524 05 1 0m 180524 10 NBS cable 0 5 m 181304 05 1 0m 181304 10 Refer to the Signal Connections section in Chapter 2 Configuration and Installation and to Appendix E SCXI 1160 Cabling for additional inform
43. cquisition board access to the MISO line on the backplane You can use the MISO line to read the Module ID Register of modules National Instruments software does not use this ability You must indicate to the software which module National Instruments Corporation 2 5 SCXI 1160 User Manual Configuration and Installation Chapter 2 is in which slot In addition to reading the Module ID Register the MISO line on the SCXI 1160 can read the Status Register which indicates the status of the relays National Instruments software uses this feature The SERDATOUT line is driven with an open collector driver which is a driver that actively drives low or goes to a high impedance state relying on a pullup resistor to make the signal line go high When using a single chassis set both jumpers W1 and W5 in position 1 on the SCXI 1160 that is connected to the data acquisition board In this setting the module drives MISO to SERDATOUT and connects the necessary pullup resistor to the SERDATOUT line When using multiple chassis set jumper W5 in position 1 on all of the SCXI 1160s that are cabled to the data acquisition board Set jumper W1 in position 1 on only one of the SCXI 1160s that are cabled to the data acquisition board It does not matter which of the SCXI 1160s that are cabled to the data acquisition board has the pullup connected Set jumper W1 in position 3 on all of the other SCXI 1160 modules that are cabled to the data acquisition board If too
44. data acquisition board which allows communication with all other modules On the other modules the jumper settings are irrelevant The SCXI 1160 has two jumpers W1 and W5 dedicated for communication between the SCXI 1160 and the data acquisition board Jumpers W2 W3 and W4 indicate to the module what type of data acquisition board is to be connected to its rear signal connector Jumper W1 Position 1 connects a 2 2 kQ pullup resistor to the SERDATOUT line This is the factory default setting Position 3 does not connect the pullup resistor to the SERDATOUT line Jumper W5 Position 1 connects the SCXIbus MISO line after buffering to the SERDATOUT pin of the rear signal connector This is the factory default setting In this setting along with the proper setting of jumper W1 the data acquisition board can read the Module ID Register or the Status Register of the SCXI 1160 See the Timing Requirements and Communication Protocol section later in this chapter and Chapter 4 Register Descriptions for information on reading the Module ID Register and the Status Register See Appendix E SCX 1160 Cabling for the pin equivalences of the SCXI 1160 rear signal connector and the data acquisition board I O connector Position 3 disconnects SERDATOUT from the SCXIbus MISO line Using Jumpers W1 and W5 If a module is not connected to a data acquisition board the positions of jumpers W1 and W5 are irrelevant Jumpers W1 and W5 give the data a
45. dler You must write to the Address Handler at the beginning of each write or read from the SCXI 1160 Write the address of the register of interest to this handler which in turn enables the register of interest The Address Handler is two bytes long and contains the address of the register to be read from or written to The Address Handler is selected when SS is asserted low and D A indicates an address transfer D A is high At this time the address is shifted in the Address Handler Register MSB first Table 4 1 contains a list of register addresses National Instruments Corporation 4 1 SCXI 1160 User Manual Register Descriptions Chapter 4 Table 4 1 Register Addresses Address Register Hexadecimal 0000 Module ID Register 0001 Data Register 0003 FFFE Reserved Parking Register After you are finished writing the D A line goes low indicating a data transfer to a register This enables the Address Handler output and selects the appropriate register At the end of each communication with the Module ID Register the Data Register or the Status Register select the Parking Register write address FFFF to the Address Handler This increases the noise immunity of the module when it is in its quiescent state After you select the Parking Register SS should go high deselecting the modules and latching all the data At reset or at power up the Address Handler content is cleared SCXI 1160 User Manual 4 2 Nationa
46. e SCXIbus Digital Control Circuitry Figure 3 4 diagrams the SCXI 1160 digital control Status Register Address Handler Serial Data Out MOD ID Register Buffered Serial Data In Data Register Buffered Digital Control Signals NC lt 15 0 gt NO lt 15 0 gt Figure 3 4 SCXI 1160 Digital Control The digital control section consists of the Address Handler the Data Register the Module ID Register and the Status Register The Address Handler is the register to which you first write an address to specify with which write or read register you want to communicate The Address Handler is a two byte serial in parallel out register with address decoding Refer to the Timing Requirements and Communication section in Chapter 2 Configuration and Installation and to Chapter 4 Register Descriptions for further details The Data Register is a four byte serial in parallel out shift register with relay drive capabilities Data is received on the MOSI line from either Slot 0 or the data acquisition board when SS is enabled D A indicates data transfer D A low and the Data Register address is selected in the SCXI 1160 User Manual 3 6 National Instruments Corporation Chapter 3 Theory of Operation Address Handler The Data Register controls the state of the SCXI 1160 relays The complete descriptions of the register bits are given in Chapter 4 Register Descriptions Writes to the Data Register require the following
47. e board the digital I O signals of the SCXI 1160 match the digital I O lines of the MIO 16 board When used with an SCXI 1341 SCXI 1342 or SCXI 1344 cable assembly the SCXI 1160 signals match the digital lines of the Lab NB Lab PC Lab PC Lab LC boards and the PC LPM 16 board respectively When you configure the SCXI 1160 for a DIO type board the digital I O signals of the SCXI 1160 match the digital I O lines of the DIO 24 and DIO 96 boards When used with an SCXI 1348 cable assembly the SCXI 1160 signals match the digital lines of the DIO 32F board Table 2 4 lists the pin equivalences For more information consult Appendix E SCXI 1160 Cabling National Instruments Corporation 2 18 SCXI 1160 User Manual Configuration and Installation Chapter 2 Table 2 4 SCXIbus to SCXI 1160 Rear Signal Connector to Data Acquisition Board Pin Equivalences CXI 1160 Rear gnal Connector Lab NB Lab PC Lab PC Lab LC S Si PC LPM 16 vo Nn 2 La Q N SERDATIN ADIOO DAQD A ADIO1 SLOTOSEL ADIO2 SERCLK EXTSTROBE SERDATOUT BDIOO The following specifications and ratings apply to the digital I O lines Absolute maximum voltage input rating 5 5 V with respect to DIG GND Digital input specifications referenced to DIG GND Vy input logic high voltage 2 V minimum Vi input logic low voltage 0 8 V maximum Ir input current leakage 1 uA maximum Digital output specifications referenced to DIG GND Vox Out
48. e interior of the SCXI chassis is also included SCXI 1180 Installation Install the SCXI 1180 to the right of a slot that has an SCXI 1340 SCXI 1341 SCXI 1342 or SCXI 1344 cable assembly or an SCXI 1351 slot extender in its rear connector space Follow these steps to install the SCXI 1180 1 Make sure that the computer and the SCXI chassis are turned off 2 Remove the front filler panel of the slot where you want to insert the SCXI 1180 3 Thread the rear connector through the front of the chassis to the rear of the chassis Attach the rear connector to the breakout connector of the adjacent cable assembly or slot extender as shown in Figure E 3 4 Screw in the rear panel to the threaded strip in the rear of the chassis 5 Screw the front panel into the front threaded strip as shown in Figure E 4 Check the installation SCXI 1160 User Manual E 10 National Instruments Corporation Appendix E SCXI 1160 Cabling Threaded Strip in Rear of Chassis SCXI 1180 Breakout Connector N O O O N AMMAM di Ve S S z S S S Bice eee eee eee L E CeCe Ce C c EL iit a MMA QA 7 Breakout Connector from SCXI 1340 Beet CE CCC CEL ECC CC eC kk LS 7 Rear Connector Ribbon Cable to Front Panel Figure E 3 SCXI 1180 Rear Connections Note If you are us
49. ecifications This appendix lists the specifications for the SCXI 1160 These are typical at 25 C and 50 humidity unless otherwise stated The operating temperature range is 0 to 50 C Contact Ratings Switching power resistive load AC DC Switching voltage Switching current Channel on resistance Minimum switching capacity Contact material Life 500 VA maximum 60 W maximum for V lt 30 V 30 W maximum for V gt 30 V 250 VAC or 48 VDC maximum 2 A maximum per channel 75 mQ 100 uA at 100 mVDC Gold clad silver alloy Note Relays are subject to normal wear based on the number of operations Mechanical at 50 cps Electrical at 20 cpm Working isolation Terminal to terminal Terminal to earth Offset voltage Maximum speed Set and reset time National Instruments Corporation 108 operations minimum 105 at 2 A 250 VAC 2x105 at 2 A 30 VDC 250 Vrms 250 Vrms 3 UV typical 20 operations per minute at maximum load 50 operations per second at low level loads 1 mA 1 VDC 10 msec A 1 SCXI 1160 User Manual Specifications Physical Dimensions Connectors Operating Environment Temperature Relative humidity Storage Environment Temperature Relative humidity Safety SCXI 1160 User Manual Appendix A 1 2 by 6 8 by 8 0 in 50 pin male ribbon cable rear connector 48 pin DIN C male front connector 48 screw terminal adapter available 0 to 50 C 5 to 90 at 35 C
50. ect No Connect SERDATOUT DIO No Connect No Connect DIG GND DIO SCXI 1343 Installation 1 2 Insert each wire through the adapter strain relief Make all solder connections first Tighten the strain relief screws to secure the wires Screw terminal Screw terminal Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Solder pad Appendix E Plug the adapter board front connector into the module rear signal connector A corner of the adapter board will enter the upper board guide of the chassis Screw the rear panel to the threaded strips in the rear of the chassis SCXI 1160 User Manual E 16 National Instruments Corporation Appendix F Aromat Relay Technical Data This appendix contains technical data on Aromat Corporation relays Aromat relays are used on the SCXI 1160 Copyright Aromat Corporation 1991 Reprinted with permission of copyright owner All rights reserved Aromat Corporation 1991 Relay Technical Data Book National Instruments Corporation F 1 SCXI 1160 User Manual Aromat Relay Information General Application Guidelines CONTACT The contacts are the most important elements of relay construction
51. ect Register to ensure that no accidental writes occur Figure 2 9 shows the timing requirements on the SERCLK and SERDATIN signals You must observe these timing requirements for all communications T delay is a specification of the SCXI 1160 SERCLK SERDATIN COO a ne EN RSR OPI Tdelay SERDATOUT gt 4 oo Tlow Minimum low time 65 nsec minimum Thigh Minimum high time 400 nsec minimum Tsetup SERDATIN setup time 200 nsec minimum Thold SERDATIN hold time 200 nsec minimum Tdelay SERDATOUT delay 350 nsec maximum Figure 2 9 Serial Data Timing Diagram After selecting the module slot as previously described you must write first to the Address Handler then to the register of interest for each write or read cycle to the module To write to the Address Handler follow these steps 1 Initial conditions SS asserted low SERDATIN don t care DAQD A 1 indicates data will be written to the Address Handler SLOTOSEL 1 SERCLK 1 and has not transitioned since SS went low 2 For each bit starting with the MSB perform the following action Establish the desired SERDATIN level corresponding to this bit SERCLK 0 SERCLK 1 This rising edge clocks the data These bits are the address of the register of interest SCXI 1160 User Manual 2 21 National Instruments Corporation Chapter 2 Configuration and Installation 3 Pull DAQD A low to deselect the Address Handler and select the register whose address was
52. ed to connect anything to the middle connector of the SCXI 1350 adapter board in the last chassis SCXI 1343 Rear Screw Terminal Adapter You use the SCXI 1343 universal adapter to adapt custom wiring to the SCXI 1160 The SCXI 1343 has screw terminals and solder pads for signal connection A strain relief is on the outside of the rear panel Table E 6 SCXI 1343 Pin Connections Rear Signal SCXI 1160 Use Connection Connector Pin 1 2 3 4 5 6 7 8 9 National Instruments Corporation No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Connect Solder pad Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal continues SCXI 1160 User Manual SCXI 1160 Cabling Table E 6 SCXI 1343 Pin Connections Continued Rear Signal SCXI 1160 Use Connection Connector Pin No Connect No Connect No Connect No Connect No Connect No Connect DIG GND MIO SERDATOUT MIO DAQD A No Connect SLOTOSEL No Connect SERCLK DIO No Connect No Connect No Connect No connect SERCLK MIO No Connect No Connect No Connect No Connect No Connect No Connect No Connect No Conn
53. eeesresese 2 10 Contact Protection for Inductive Load Connections ssssssssessseseseeesseesseeseee 2 10 Terminal Block insine n a wee aah cease awed 2 12 SCXI 1324 Terminal Block sssssseessesssseessessesesseessresserssersssees 2 12 Signal Connection sister 2 13 SCXI 1324 Installation ss 2 15 Rear Signal Connector a scccsisvnidiacedsseaevintseesacejaacessnddeess leadaasangebdesvendccetaseesanelins 2 15 Rear Signal Connector Signal Descriptions ssssssssessssssssssesssseressresseesseessee 2 17 Digital I O Signal Connections ss 2 17 Timing Requirements and Communication Protocol 2 19 COMMUNI CATON Signal TEA ds ad tal aa tenants 2 19 Chapter 3 Theory of Operation ESS rt nr gender 3 1 FUMIE HG Meal SETI Wyo RSR RS ne RER ee et Le 3 1 SEXIDUS Connector ss ismamsinnnmatasinteitesdtaihiesseen 3 2 SCXIbus Connector Signal Descriptions ss 3 4 Digital Interface saines nadia hentai 3 5 Digital Control Are MAO y spetsigt ire Rsntte else 3 6 Relay Channels isa nine intra in irait idee 3 7 National Instruments Corporation v SCXI 1160 User Manual Chapter 4 Register Descriptions 4 1 Register D scfipt ons Sn se e tn oat E nn 4 1 Register Description Format esssssesesseesseeseresseeessteseesseesssresseesseesseesssesseessee 4 1 SEXFI160 R BISICES siori diie ea e a de E E Eaa aeii 4 1 Address Handler hassan nn nt nt re cosgblaaeseeuiteneneadonneedaty 4 MOQUIS
54. egister 2 22 to 2 23 5 2 to 5 3 National Instruments Corporation Index 9 SCXI 1160 User Manual Index SERDATOUT signal digital I O signal connections 2 18 digital signal connections 2 6 jumper connection 2 5 rear signal connector 2 17 B 2 serial data timing diagram 2 21 Serial Peripheral Interface SPI bus communications See communication signals signal connections 2 8 to 2 25 exceeding maximum ratings warning 2 8 front connector 2 9 to 2 12 arc suppressor pad locations 2 12 COM to NC arc suppressor placement 2 12 COM to NO arc suppressor placement 2 11 contact protection for inductive load connections 2 10 to 2 12 contact protection using flyback diode 2 11 pin assignments 2 9 signal descriptions 2 10 gold plating on relay 2 8 rear signal connector 2 15 to 2 19 data acquisition board pin equivalences 2 19 digital I O signal connections 2 17 to 2 19 overview 2 15 pin assignments 2 16 B 1 signal descriptions 2 17 B 2 timing requirements and communication protocol 2 19 to 2 25 SCXI 1324 terminal block 2 12 to 2 15 hazardous voltage cautions 2 13 installation 2 15 overview 2 12 to 2 13 parts locator diagram 2 14 signal connection procedure 2 13 SCXIbus connector 3 4 to 3 5 SL lt 3 0 gt bit Slot Select Register 4 8 Slot 0 registers 4 7 Slot Select Register 4 7 to 4 8 slot selection slot select timing diagram 2 20 writing the slot select number 2 20 to 2 21 SLOTOSEL signal digital I
55. end the relay life it is National Instruments Corporation 3 7 SCXI 1160 User Manual Theory of Operation Chapter 3 advisable to avoid energizing the relay coils that will not be changing states To achieve this write zeros in the Data Register locations belonging to the relays that do not need to change states Refer to Chapter 4 Register Descriptions and Chapter 5 Programming for further details The relays are break before make as long as you do not exceed the specified relay operation speed In addition each relay is fully isolated from the other relays and from earth ground with a working common mode voltage of 250 Vrms and a breakdown of 1 500 Vrms Note It is important to notice that this module has no access to the analog backplane this protects the backplane from faults when high voltages are available on the relay contacts SCXI 1160 User Manual 3 8 National Instruments Corporation Chapter 4 Register Descriptions This chapter describes in detail the SCXI 1160 Address Handler the Module ID Register the Data Register the Status Register and the Slot 0 registers Note If you plan to use a programming software package such as NI DAQ LabWindows or LabVIEW with your SCXI 1160 board you do not need to read this chapter Register Description Register Description Format This register description chapter discusses each of the SCXI 1160 registers and the Slot 0 registers A detailed bit description of each re
56. endix D SCXI 1120 Front Connector cao oe ne eal ieee t ey D 1 Front Connector Signal Descriptions ss D 2 Appendix E SCXLELOD Caplin cocker Ae ne done er E 1 SCXE1340 Cable Assembly ee nO OEE tt an en cn re E 1 DC De SAG Tris Gall Ata esos doses aahevoestcalee a ycucbacies bce aes ne ne E 2 SCXI 1341 Lab NB Lab PC or Lab PC and SCXI 1344 Lab LC Cable Assembly ses Re cd de tds avant sen ane ST N ER ee RE AE E 3 SCXI 1160 User Manual vi National Instruments Corporation SCXI 1341 and SCXI 1344 Installation woo eeeccceccecccccecessesseeeseeveeees E 4 SCXI 1342 PC LPM 16 Adapter Board E 5 SCXI 1342 Installation sets aliments E 6 DIO 96 Board Connection AT MIO 16D and AT MIO 64F 5 Board Connection E 6 SCXI 1351 and NB5 Cable Installation E 7 SCXI 1348 DIO 32F Adapter Board ess nine nantes E 8 SEXES 48 SAONE RU Re ec da ee E 10 SC X 160 Feedthrough Panel RL eens eee E 10 SCX BU Titi Cea aU RE cn adeno E 10 SCXI 1302 50 Pin Terminal Block sicscsayiiysaicaes sieecssasensnevenssecedvenovccconttenecsbcesntcaesnteessecs E 12 SCXT1302 Wirinoe Procedure et oc da are Re Ar den E 12 SCEXI 1302 Install tion sisine ne tannins E 13 SCXI 1351 One Slot Cable Extender ntm nine oentaateonenathebonenzonebosatts E 13 SEXI 1351 Installations Nassau E 14 Multiple Chassis Connections for the SCXI 1160 oo eee eceeseeeentecesteeeesteeesneeeeaes E 14 SCXI 1350 Multichassis Adapter isicc jscciustsjsastvenniccetascudoccisuptecganavateccavsncsenterass
57. er If you wish you can write address FFFF hexadecimal to the Address Handler This selects the Parking Register and makes the module registers more immune to noise SCXI 1160 User Manual 2 23 National Instruments Corporation Chapter 2 Configuration and Installation 4 Pull SLOTOSEL low to deassert the SS line and establish conditions for writing a new slot select number to the Slot 0 Slot Select Register 5 If you are not selecting another slot write zero to the Slot 0 Slot Select Register Figure 2 12 illustrates a read of the SCXI 1160 Module ID Register SLOTOSEL DAQD A SS SERCLK Tdelay SERDATOUT 0000 11 00000000000000000000000000 byte 0 12 byte 1 0 byte 2 0 byte 3 0 Tdelay SS high to SERDATOUT high 350 nsec Figure 2 12 SCXI 1160 Module ID Register Timing Diagram To read from the Status Register follow these steps 1 Initial conditions SS asserted low SERDATIN don t care DAQD A 0 SLOTOSEL 1 SERCLK 1 and has not changed since DAQD A went low 2 The Status Register of the SCXI 1160 consists of a single bit that the relays control You do not need to pulse the SERCLK to read the Status Register Read the level of the SERDATOUT line If it is low the relays are switching If it is high the relays are finished switching 3 Pull DAQD A high This disables further reads from the Status Register If you wish you can write addres
58. er Manual F 6 National Instruments Corporation tic is necessary a solid state relay SSR should be used Fig 11 Appendix G Customer Communication National Instruments offers technical support through electronic fax and telephone systems The electronic services include our Web site an FTP site and a fax on demand system If you have a hardware or software problem please first try the electronic support systems If the information available on these systems does not answer your questions contact one of our technical support centers which are staffed by applications engineers for support by telephone and fax To comment on the documentation supplied with our products send e mail to techpubs natinst com Web Site The InstrumentationWeb address is www natinst com From this Web site you can connect to our Web sites around the world www natinst com niglobal and access technical support www natinst com support FTP Site To access our FTP site log in to our Internet host ftp natinst com as anonymous and use your e mail address such as yourname anywhere com as your password The support files and documents are located in the support directories Fax on Demand Support Fax on Demand is a 24 hour information retrieval system containing a library of documents in English on a wide range of technical information You can access Fax on Demand from a touch tone telephone at 512 418 1111 E Mail Suppor
59. eset a specific relay or relays without affecting the remaining relays However a write to the Data Register affects all relays simultaneously You cannot read the register to determine which relays have been set or reset in the past therefore you should maintain a software copy of the relay states You can then read the software copy to determine the status of the relays To change the state of a single relay without disturbing the remaining relays change the bits that control the relay coils of interest clear all other bits no change in states and rewrite to the Data Register National Instruments Corporation 5 1 SCXI 1160 User Manual Programming Chapter 5 Table 5 1 SCXIbus to SCXI 1160 Rear Signal Connector to Data Acquisition Board Pin Equivalences CXI 1160 Rear gnal Connector Lab NB Lab PC Lab PC Lab LC S Si PC LPM 16 vo amp Nn 2 La Q N SERDATIN ADIOO DAQD A ADIO1 SLOTOSEL ADIO2 SERCLK EXTSTROBE SERDATOUT BDIOO Register Selection and Write Procedure 1 Select the slot of the module to be written to Initial conditions SERDATIN X DAQD A 1 SLOTOSEL 1 SERCLK 1 2 Clear SLOTOSEL to 0 This deasserts all SS lines to all modules in all chassis 3 For each bit starting with the MSB bit 15 do the following a Set SERDATIN bit to be sent These bits are the data that is written to the Slot Select Register b Clear SERCLK to 0 c Set SERCLK to 1 Thi
60. f functions that can be called from your application programming environment These functions include routines for analog input A D conversion buffered data acquisition high speed A D conversion analog output D A conversion waveform generation digital I O counter timer SCXI RTSI and self calibration NI DAQ maintains a consistent software interface among its different versions so you can switch between platforms with minimal modifications to your code You can also use the SCXI 1160 together with the PC AT and MC data acquisition boards with NI DAQ software for DOS Windows LabWindows NI DAQ software for DOS Windows LabWindows comes with language interfaces for Professional BASIC Turbo Pascal Turbo C Turbo C Borland C and Microsoft C for DOS and Visual Basic Turbo Pascal Microsoft C with SDK and Borland C for Windows NI DAQ software for DOS Windows LabWindows is on high density 5 25 in and 3 5 in diskettes You can use the SCXI 1160 together with the NB Series data acquisition boards with LabVIEW for Macintosh a software system that features interactive graphics a state of the art user interface and a powerful graphical programming language The LabVIEW Data Acquisition VI Library a series of VIs for using LabVIEW with National Instruments boards is included with LabVIEW The LabVIEW Data Acquisition VI Library is functionally equivalent to the NI DAQ software for Macintosh You can also use the SCXI 1160 com
61. gister is given The individual register description gives the type word size and bit map of the register followed by a description of each bit The register bit map shows a diagram of the register with the MSB shown on the left bit 31 for a 32 bit register bit 15 for a 16 bit register and bit 7 for an 8 bit register and the LSB shown on the right bit 0 A rectangle is used to represent each bit Each bit is labeled with a name inside its rectangle An asterisk after the bit name indicates that the bit is inverted negative logic The Module ID register has a unique format and is described in the Module ID Register section In many of the registers several bits are labeled with an X indicating don t care bits When you write to a register you may set or clear these bits without effect SCXI 1160 Registers The SCXI 1160 is a class II module It has four registers and an address handler The Module ID Register is a 4 byte read only register that contains the Module ID number of the SCXI 1160 The Data Register is a 32 bit write only register that controls the relay states on the SCXI 1160 The Status Register is a 1 bit read only register that indicates the state of the relays as either switching or finished switching The Parking Register is a dummy register located at address FFFF The Address Handler is the register that contains the address of the register to be read from or written to and is a write only register Address Han
62. he SCXI 1351 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module in the chassis 3 Connect the position 1 through 50 connector of the NBS cable to the male breakout connector on the SCXI 1351 4 Plug the mounting bracket connector onto the module rear signal connector see Figure E 2 An alignment tab on the bracket will enter the upper board guide of the chassis 5 Screw the mounting bracket to the threaded strips in the rear of the chassis 6 Connect the 100 pin connector of the NB5 cable to the DIO 96 board After step 1 the order of these steps is not critical however it is easier to locate the correct position for the mounting bracket with a module installed in the chassis If you are attaching a cable to the female connector installation is easiest if you attach the second cable before installing the SCXI 1351 National Instruments Corporation E 7 SCXI 1160 User Manual SCXI 1160 Cabling Mounting Bracket Connector r Step 5 Appendix E Rear Panel CEE EEE EE EEE CLEC CCC CET CCC EEE 50 Pin Female Connector to Next Slot BWRBEREEEEEEEEEEEEEEEEEEEEEEEEEEEEE BEBE t SCXI 1160 Rear Signal Connector Male Breakout Step 3 NB5 Cable Positions 1 through 50 Connector Mounting Bracket Figure E 2 SCXI 1351 and NB5 Cable Installation SCXI 1348 DIO 32F Adapter Board The SCXI 13
63. he effectiveness of the protective device may diminish As a guide the distance should be within 50cm e Abnormal Corrosion During High Frequency Switching of DC Loads spark generation If for example a DC valve or clutch is switched at a high frequency a blue green corrosion may develop This occurs from the reaction with nitrogen in the air when sparks arc discharge are generated during switching For relays e When Using Long Wires If long wires 100 to 300m are to be used in a relay contact circuit inrush current may become a problem due to the stray capacitance existing between wires Add a resistor approx 10 to 502 in series with the contacts Fig 16 e Phase Synchronization in Switching AC Loads If switching of the relay contacts is synchronized with the phase of the AC power reduced electrical life welded contacts or a locking phenomenon incomplete release due to contact material transfer may occur Therefore check the relay while it is operating in the actual system However if problems develop control the relay using an appropriate phase Fig 17 4 Cautions on Use Related to Contacts e Connection of load and contacts Connect the load to one side of the power supply as shown in Fig 18 a Connect the contacts to the other side This prevents high voltages from developing between contacts If contacts are connected to both side of the power supply as shown in b there is a risk of short
64. igure 2 10 Address Handler Timing Diagram 00 0 eccceececeececesececeneeecseeceesaeeeeneeeenaees 2 22 Figure 2 11 Data Register Write Timing Diagram 00 0 0 ee ee eeeeeeeeeneecneeceeeeseeeeneeenaeenes 2 23 Figure 2 12 SCXI 1160 Module ID Register Timing Diagram ccc eeeeeseeeenteeeneeeeees 2 24 Figure 2 13 SCXI 1160 Status Register Timing Diagram 00 cece eeeeeeeteeesteeeeneeeenneeeees 2 25 Figure 3 1 SCXI 1160 Block Diagramme Rate ets 3 1 Figure 3 2 SCXIbus Connector Pin Assignment 3 3 Figure 3 3 Digital Interface Circuitry Block Diagram 000 eee eeeeeeseceeeceeeeenneeneeeaeees 3 5 Figure 3 4 SCXI 1160 Digital Control o oo dent cen nn te nn ne nr ne 3 6 Figure B 1 SCXI 1160 Rear Signal Connector Pin Assignment 0 0 0 0 ceeeceeeceeeeseeeeneeeees B 1 Figure C 1 SCXIbus Connector Pin Assignment C 2 Figure D 1 SCXI 1160 Front Connector Pin Assignment 00 ccc ceeeeseeeseceeeceeeeeeneeenaeens D 1 Figure E 1 SCXI 1340 Installation serge ceca ste tre tres Aa treet alee ake niet ante tiered te ten E 3 Figure E 2 SCXI 1351 and NBS Cable Installation E 8 Figure E 3 SCXI 1180 Rear Connections 4 2 oie oats ent Sh dde nid te E 11 Figure E 4 SCXI 1180 Front Panel Installation 20 00 eee eeeceseceseecseeceseeeaeecaeceeeeeneeens E 12 Figure E 5 SCX 1350 Cover Removal se tn et aunts E 13 Tables Table 2 1 Digita
65. ing the SCXI 1180 with an SCXI 1351 and an NBS cable connect the SCXI 1180 breakout connector to the female connector on the SCXI 1351 Place the SCXI 1180 to the left of the SCXI 1351 looking to the front of the chassis National Instruments Corporation E 11 SCXI 1160 User Manual SCXI 1160 Cabling Appendix E 000000900000 DOOOOOO 7 FA Front Panel Connector De Ribbon Cable to Rear and Breakout Connectors AANNNSNNNNNNNNNNNNNNNNS SANNNNSNNNNNNNNSNNNNNNNS EI OOQOO DOOOOOO raj Step 5 Front Panel noe C4 Front Threaded Strip Figure E 4 SCXI 1180 Front Panel Installation SCXI 1302 50 Pin Terminal Block The SCXI 1302 terminal block has screw terminal connections for the 50 pin connector on the SCXI 1180 feedthrough panel SCXI 1302 Wiring Procedure To wire the SCXI 1302 terminal block you must remove the cover connect all the wiring and replace the cover The procedure for this is as follows 1 Do y e N Unscrew the rear grounding screw on the back of the terminal block as shown in Figure E 5 With a flathead screwdriver carefully pry the cover off the terminal block Insert each wire through the terminal block strain relief Connect the wires to the screw terminals Tighten the large strain relief screws to secure the wires Snap the cover back in place Reinsert the rear grounding screw The terminal block is now ready to be connected to the front panel connec
66. ing the power supply when relatively close contacts short National Instruments Corporation with a case the case must be removed or air holes drilled in the case A similar phenomenon occurs in the presence of ammonia based gas Therefore care is required in circuits where sparks are generated at a high frequency Type of Load and inrush Current The type of load and its inrush current characteristics together with the switching frequency are important factors which cause contact welding Particularly for loads with inrush currents measure the steady state current and inrush current and select a relay which provides an ample margin of safety The table on the right shows the relationship between typical loads and their inrush currents F 5 Aromat Technical Information Type of load Resistive load Solenoid load Motor load incandescent lamp load Mercury lamp load Sodium vapor lamp load Capacitive load Transformer toad Inrush current Steady state current 10 to 20 times the steady state current 5 to 10 times the steady state current 10 to 15 times the steady state current Approx 3 times the steady state current 1 to 3 times the steady state current 20 to 40 times the steady state current 5 to 15 times the steady state current SCXI 1160 User Manual Aromat Relay Information Appendix F e Dummy Resistor Since voltage levels at the contacts is to add a dummy resistor in par
67. ingle chassis with one data acquisition board An additional shielded terminal block has screw terminals for easy signal attachment to the SCXI 1160 With the SCXI 1160 the SCXI chassis can serve as a controller or switcher in laboratory testing production testing and industrial process monitoring National Instruments Corporation 1 1 SCXI 1160 User Manual Introduction Chapter 1 What Your Kit Should Contain The contents of the SCXI 1160 kit part number 776572 60 are listed as follows Kit Component Part Number SCXI 1160 module 182139 01 SCXI 1160 User Manual 320513 01 If your kit is missing any of the components contact National Instruments Optional Software This manual contains complete instructions for directly programming the SCXI 1160 You can order separate software packages for controlling the SCXI 1160 from National Instruments When you combine the PC AT and MC data acquisition boards with the SCXI 1160 you can use LabVIEW for Windows or LabWindows for DOS LabVIEW and LabWindows are innovative program development software packages for data acquisition and control applications LabVIEW uses graphical programming whereas LabWindows enhances Microsoft C and QuickBASIC Both packages include extensive libraries for data acquisition instrument control data analysis and graphical data presentation Your National Instruments data acquisition board is shipped with the NI DAQ software NI DAQ has a library o
68. ion E 16 pin connections E 15 to E 16 SCXI 1344 Lab LC cable assembly E 3 installation E 4 pin translations E 4 SCXI 1348 DIO 32F adapter board cable assembly E 8 installation E 10 pin translations E 9 SCXI 1351 one slot cable extender cable assembly E 13 installation E 14 CH lt 4 0 gt bit Slot Select Register 4 8 CHSGND signal SCXIbus connector 3 4 C 3 COM connection relay channels 3 7 COM lt 15 0 gt signal front connector 2 10 D 2 communication signals 2 19 to 2 25 Address Handler timing diagram 2 22 communicating on SPI bus 2 19 Data Register write timing diagram 2 23 Module ID Register timing diagram 2 24 reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 serial data timing diagram 2 21 slot select timing diagram 2 20 Status Register timing diagram 2 24 to 2 25 writing the slot select number 2 20 to 2 21 writing to Address Handler 2 21 to 2 22 writing to Data Register 2 22 to 2 23 configuration See jumper configuration signal connections contact protection Aromat relays F 2 to F 6 inductive load connections 2 10 to 2 12 arc suppressor pad locations 2 12 COM to NC arc suppressor placement 2 12 COM to NO arc suppressor placement 2 11 using flyback diode 2 11 contact rating specifications A 1 custom cables optional 1 3 to 1 4 customer communication xiii G 1 SCXI 1160 User Manual Index 2 National Instruments Corporation Index D D A
69. ional Instruments Corporation Appendix E SCXI 1160 Cabling Mounting Bracket Rear Panel Connector 5 Step 4 50 Pin Female Connector to MIO 16 or DIO 24 Board BAREEEEEEEEEEREEEEEEEEEEEEEEEEEEEEE BARBARA SARRRERSRRREEREREERREREREEEE be S Step 4 Male Breakout Connector Figure E 1 SCXI 1340 Installation SCXI 1341 Lab NB Lab PC or Lab PC and SCXI 1344 Lab LC Cable Assembly The SCXI 1341 Lab NB Lab PC or Lab PC cable assembly connects a Lab NB Lab PC or Lab PC board to an SCXI 1160 module The SCXI 1344 Lab LC cable assembly connects a Lab LC board to an SCXI 1160 module The SCXI 1341 and SCXI 1344 cable assemblies consist of two pieces a 50 conductor ribbon cable that connects the Lab board to the rear connector of the other piece the adapter board The adapter board converts the signals from the Lab board I O connector to a format compatible with the SCXI 1160 rear signal connector pinout at the front connector of the SCXI 1341 or SCXI 1344 The adapter board also has an additional male breakout connector that provides the unmodified Lab board signals for use with an SCXI 1180 feedthrough panel or SCXI 1181 breadboard module The adapter board gives the Lab boards full access to the digital control lines The position of jumper W1 on the SCXI 1341 and SCXI 1344 is irrelevant because the SCXI 1160 does not use jumper W1 Table E 2 lists the SCXI 13
70. it i i 5 l I Chassis 9 m SERCLK SERDATIN ps AVA VA Tss _ dis Telk _ wait TslotOsel _ wait Tss _ en SOON OIL 0 AV A Chassis ID 9 SLOTOSEL low to SS disabled SLOTOSEL low to first rising edge on SERCLK Last rising edge on SERCLK to SLOTOSEL high SLOTOSEL high to SS enabled Tss_en TslotOsel _wait OOOOOCX IRER Slot 11 200 nsec maximum 75 nsec minimum 250 nsec minimum 350 nsec maximum Figure 2 8 Slot Select Timing Diagram To write the 16 bit slot select number to Slot 0 follow these steps 1 Initial conditions SERDATIN don t care DAQD A 1 SLOTOSEL 1 SERCLK 1 2 Clear SLOTOSEL to 0 This will deassert all SS lines to all modules in all chassis 3 For each bit starting with the MSB perform the following action a Set SERDATIN bit to be sent These bits are the data that are being written to the Slot Select Register b SERCLK 0 c SERCLK 1 This rising edge clocks the data National Instruments Corporation 2 20 SCXI 1160 User Manual Configuration and Installation Chapter 2 4 Set SLOTOSEL to 1 This will assert the SS line of the module whose slot number was written to Slot 0 If multiple chassis are being used only the appropriate slot in the chassis whose address corresponds to the written chassis number will be selected When no communication is taking place between the data acquisition board and any modules write zero to the Slot Sel
71. ithout the prior written consent of National Instruments Corporation Trademarks LabVIEW NI DAQ and RTSI is a trademark of National Instruments Corporation Product and company names mentioned herein are trademarks or trade names of their respective companies WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing for a level of reliability suitable for use in or in connection with surgical implants or as critical components in any life support systems whose failure to perform can reasonably be expected to cause significant injury to a human Applications of National Instruments products involving medical or clinical treatment can create a potential for death or bodily injury caused by product failure or by errors on the part of the user or application designer Because each end user system is customized and differs from National Instruments testing platforms and because a user or application designer may use National Instruments products in combination with other products in a manner not evaluated or contemplated by National Instruments the user or application designer is ultimately responsible for verifying and validating the suitability of National Instruments products whenever National Instruments products are incorporated in a system or application including without limitation the appropriate design process and safety level of such sys
72. ix E e The SCXI 1340 rear panel gives the module and the chassis both mechanical and electrical shielding Table E 1 lists the pin equivalences of the MIO 16 and DIO 24 boards and the SCXI 1160 Table E 1 SCXI 1160 and Board Pinout Equivalences SCXI 1160 Rear Signal MIO 16 Board DIO 24 Board Connector Equivalent Equivalent DIG GND MIO DIG GND SERDATIN ADIOO SERDATOUT MIO BDIOO DAQD A ADIOI SLOTOSEL ADIO2 SERCLK DIO SERCLK MIO EXTSTROBE SERDATOUT DIO DIG GND DIO No other pins are connected on the SCXI 1160 SCXI 1340 Installation Follow these steps to install the SCXI 1340 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module in the chassis 3 Plug the mounting bracket connector onto the module rear signal connector see Figure E 1 An alignment tab on the bracket enters the upper board guide of the chassis 4 Screw the mounting bracket to the threaded strips in the rear of the chassis 5 Connect the loose end of the cable assembly to the MIO 16 or DIO 24 board rear signal connector Check the installation After step 1 the order of these steps is not critical however it is easier to locate the correct position for the mounting bracket with a module installed in the chassis If you are attaching a cable to the breakout connector installation is easiest if you attach the second cable before installing the SCXI 1340 SCXI 1160 User Manual E 2 Nat
73. l Instruments Corporation Chapter 4 Register Descriptions Module ID Register The Module ID register contains the 4 byte module ID code for the SCXI 1160 This code number is read on the MISO line whenever the Module ID register is accessed The bytes appear least significant byte first Within each byte data is sent out MSB first Additional data transfers result in all zeros being sent on the MISO line The Module ID register is reinitialized to its original value each time it is deselected or at reset or power up The Module ID Register address is hexadecimal 0000 Type Read only Word Size 4 byte Bit Map National Instruments Corporation 4 3 SCXI 1160 User Manual Register Descriptions Chapter 4 Data Register The Data Register contains 32 bits that control the state of each relay of the SCXI 1160 Whenever the Address Handler selects the Data Register the Data Register shifts in the data present on the MOSI line bit 31 first and then latches the data when it is deselected At power up or reset the Data Register content is unknown and its outputs are not driving the relay coils The Data Register address is hexadecimal 0001 Table 4 2 shows a truth table for setting and resetting a given relay Table 4 2 Truth Table for Resetting and Setting Relays Na ese EEE 0 0 No change 0 1 COM connects to NO position 1 0 COM connects to NC position 1 1 Not valid Type Write only Word Size 32 bit Bit Map
74. l Signal Connections and Jumper Settings 00 0 0 eee eeseecesteeeenteeeeeeees 2 6 Table 2 2 COM to NO Arc Suppressor Placement 0 ceeececesececesececeeececseeeeeseeeenseeees 2 11 Table 2 3 COM to NC Arc Suppressor Placement eeccceesseceeseceeneecenecessaecenaeeeenes 2 12 Table 2 4 SCXIbus to SCXI 1160 Rear Signal Connector to Data Acquisition Board Pin Equival n es sas surnaturel 2 19 Table 3 1 SCXIbus Equivalents for the Rear Signal Connector ec ceeceeeeeeeceseeeeeees 3 5 Fable 4 1 Register Addresses en ne a alta N nr eaaa 4 2 Table 4 2 Truth Table for Resetting and Setting Relays eee eeeeeeeeeeeeeeeeeeeneeeenaeees 4 4 Table 5 1 SCXIbus to SCXI 1160 Rear Signal Connector to Data Acquisition Board Pin QUIVAI ACES sit Sn Ans te A ee 5 2 SCXI 1160 User Manual viii National Instruments Corporation Table E 1 SCXI 1160 and Board Pinout Equivalences ceecceesseeesneeeeeeeeseeeeneeeenee E 2 Table E 2 SCXI 1341 and 1344 Pin Translations i eeccceccsccsssesssssessesseeessseeees E 4 Table E 3 SCXI 1342 Pin Translations serres E 5 Table E 4 SCXI 1160 and DIO 96 Board Pinout Equivalences 00 0 eeeeeeseeeseeeeeteeee E 7 Table E 5 SCXI 1348 Pin Translations ere E 9 Table E 6 SCXI 1343 Pin Connections 0 cccccccccscscssscscscececececeececesecesececsescseececeeseeess E 15 National Instruments Corporation ix SCXI 1160 User Manual About This Manual This man
75. lace the grounding screw to ensure proper shielding Install contact protection as previously described if your load is inductive Connect the terminal block to the SCXI 1160 front connector as explained in the SCX1 1324 Installation section the next section in this chapter Figure 2 6 shows a parts locator diagram for the SCXI 1324 terminal block National Instruments Corporation 2 13 SCXI 1160 User Manual Configuration and Installation Chapter 2 Letter Number Grounding Screw ision Project Name Assembly Number 48 Position Connector Rev and Serial Mounting Screw Terminals Mounting Screw Strain Relief Tightening to Earth Ground Screws Solder Lug Connect Solder Lug Connect to Earth Ground Thumbscrew Opening Thumbscrew Opening Figure 2 6 SCXI 1324 Parts Locator Diagram SCXI 1160 User Manual 2 14 National Instruments Corporation Configuration and Installation Chapter 2 SCXI 1324 Installation To connect the terminal block to the SCXI 1160 front connector follow these steps 1 Connect the SCXI 1160 front connector to its mating connector on the terminal block 2 Make sure that the SCXI 1160 top and bottom thumbscrews do not obstruct the rear panel of the terminal block 3 Tighten the top and bottom screws on the back of the terminal block to hold it securely in place Rear Signal Connector Note If you will use the SCXI 1160 with a National Instr
76. lation E 2 to E 3 SCXI 1160 and board pinout equivalences E 2 SCXI 1160 User Manual Index 8 National Instruments Corporation Index SCXI 1341 Lab NB Lab PC or Lab PC cable assembly E 3 installation E 4 pin translations E 4 SCXI 1342 PC LPM 16 adapter board cable assembly E 5 installation E 6 pin translations E 5 SCXI 1343 rear screw terminal adapter installation E 16 pin connections E 15 to E 16 SCXI 1344 Lab LC cable assembly E 3 installation E 4 pin translations E 4 SCXI 1348 DIO 32F adapter board cable assembly E 8 installation E 10 pin translations E 9 SCXI 1351 and NB5 cable assembly E 6 installation E 7 to E 8 SCXI 1160 and DIO 96 board pinout equivalences E 7 SCXI 1351 one slot cable extender cable assembly E 13 installation E 14 SCXIbus connector pin assignments 3 3 C 2 signal descriptions 3 4 to 3 5 C 3 SERCLK signal digital I O signal connections 2 18 reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 rear signal connector 2 17 B 2 writing the slot select number 2 20 to 2 21 writing to Address Handler 2 21 to 2 22 writing to Data Register 2 22 to 2 23 5 2 to 5 3 SERDATIN signal digital I O signal connections 2 18 reading from Module ID Register 2 23 to 2 24 reading from Status Register 2 24 to 2 25 rear signal connector 2 17 B 2 writing the slot select number 2 20 to 2 21 writing to Address Handler 2 21 to 2 22 writing to Data R
77. low or arc discharge The discharge decomposes organic matter contained in the air and causes black deposits oxides carbides to develop on the contacts This may result in contact failure Fig 13 Example of counter emf and actual measurement on a peak hold meter In Fig 13 a an emf e L Shwith a steep waveform is generated across the coil with the polarity shown in Fig 13 b at the instant the inductive load is switched off The counter emf passes through the power supply line and reaches both contacts Generally the critical dielectric break down voltage at standard temperature and pressure in air is about 200 to 300 volts Therefore if the counter emf exceeds this discharge occurs at the contacts to dissipate the energy Li stored in the coil For this reason it is desirable to absorb the counter emf so that it is 200V or less A memory oscilloscope digital memory peak hold meter etc can be used to measure the counter emf However since the waveform is extremely steep considerable discrepancies may result depending on the precision of the equipment used The table shows the counter emf of various relays measured on a high precision peak hold meter Actual measurement of counter emf on a peak hold meter Nominal Coll Voltage sr ev roo ar e Material Transfer Phenomenon Material transfer of contacts occurs National Instruments Corporation F 3 Aromat Technical Information when one con
78. m the data acquisition board to the first chassis connecting positions through 50 to the SCXI 1350 in the first chassis SCXI 1350 Installation After you have installed the data acquisition board into the computer and the SCXI modules into each of the SCXI 1001 chassis cable one module from each chassis to the data acquisition board as follows 1 Make sure that the computer and all the SCXI chassis are turned off 2 Connect one end of the NB1 or the 100 pin connector of the NB5 cable to the data acquisition board 3 Plug the other end of the cable or positions 1 through 50 of the NB5 cable into the connector with the latches that are at the rear of the SCXI 1350 adapter board SCXI 1160 User Manual E 14 National Instruments Corporation Appendix E SCXI 1160 Cabling Connect another ribbon cable to the chassis extender connector that is in the middle of the SCXI 1350 Plug the SCXI 1350 into the back of an SCXI module in the first chassis so that the module rear connector mates with the front connector on the SCXI 1350 adapter board When you are connecting to an SCXI 1160 be sure to set the jumpers for either a DIO type or an MIO type board as needed Screw the rear panel to the threaded strips in the rear of the chassis Connect the loose end of the ribbon cable from step 4 into the rear connector of the second SCXI 1350 and install the adapter board Continue until all chassis are connected You do not ne
79. mbly to the rear signal connector on the SCXI 1160 module Screw the rear panel to the rear threaded strip Attach the loose end of the cable to the data acquisition board Note For installation procedures with other SCXI accessories and data acquisition boards consult Appendix E SCXI 1160 Cabling 6 Check the installation 7 Turn on the SCXI chassis 8 Turn on the computer or reconnect it to your chassis The SCXI 1160 board is installed and ready for operation Signal Connections This section describes the signal connections to the SCXI 1160 board via the SCXI 1160 front connector and rear signal connector and includes specifications and connection instructions for the SCXI 1160 connector signals Note In high current applications the thin layer of gold plating on the relay contact may be destroyed Although this will not affect the high current application you may experience a high contact resistance in a low current application and be unable to use the relay Caution Connections to and between any terminals of the SCXI 1160 that exceed any of A the maximum ratings of input signals on the SCXI 1160 can result in damage to the SCXI 1160 module and to the SCXIbus Maximum input ratings for each signal are given in this chapter under the discussion of that signal National Instruments is not liable for any damages resulting from such signal connections SCXI 1160 User Manual 2 8 National Instruments Corporation Chapter 2 C
80. o the Address Handler If you do not want to poll the Status Register you must make sure that at least 20 msec have elapsed since the last write to the Data Register before you perform any new operations on the relays At reset or power up the Status Register bit is set high relays are not switching National Instruments Corporation 4 5 SCXI 1160 User Manual Register Descriptions Chapter 4 Parking Register This register is a dummy register that you should select after the end of a read or write operation Selecting the Parking Register places the module in a state insensitive to noise and to ESD which may corrupt the Data Register content and cause the relays to change state Select the Parking Register by writing FFFF hexadecimal to the Address Handler SCXI 1160 User Manual 4 6 National Instruments Corporation Chapter 4 Register Descriptions Slot 0 Register Descriptions Slot 0 has three registers the FIFO Register the Hardscan Register and the Slot Select Register Only the Slot Select Register is of interest The Slot Select Register is a 16 bit write only register that determines with which slot the data acquisition board speaks when SLOTOSEL is released high In the case of the SCXI 1001 chassis the Slot Select Register also determines in which chassis the desired slot is Write to the Slot Select Register using the SLOTOSEL line Maintain software copies of the Slot Select Register If you are using multiple ch
81. onal Instruments Corporation National Instruments Corporation 6504 Bridge Point Parkway MS 53 02 MS 53 02 Austin TX 78730 5039 512 794 5678 Glossary eme ane i degrees percent Q ohms e strain A amperes ACH data acquisition board analog input channel number A D analog to digital Arms amperes root mean square AWG American Wire Gauge C Celsius CH module positive input channel number CH module negative input channel number cpm counts per minute cps counts per second COM common D A digital to analog dB decibels DIN Deutsche Industrie Norme emf electromotive force FIFO first in first out in inches hex hexadecimal HSCR Hardscan Control Register Hz hertz ID identification I input current leakage lin input current VO input output Tout output current LSB least significant bit m meters National Instruments Corporation Glossary 1 SCXI 1160 User Manual Glossary M megabytes of memory MCH module positive output channel number MCH module negative output channel number MSB most significant bit MTS multiplexed temperature sensor NC normally closed NO normally open RAM random access memory rms root mean square RTSI Real Time System Integration SCXI Signal Conditioning eXtensions for Instrumentation bus SDK Software Developer s Kit sec seconds SPDT single pole double throw SPI serial peripheral interface UL Underwriters Laboratory V volts VI virtual instrument
82. onfiguration and Installation Front Connector Figure 2 3 shows the pin assignments for the SCXI 1160 front connector Pin Signal Column Signal Number Name A B C Name 32 CO Be RP rR rFPNNNNNNNNNDN W W MAN ND R U O I LD DOH m m OrNW A NU R Ur CO Figure 2 3 SCXI 1160 Front Connector Pin Assignment National Instruments Corporation 2 9 SCXI 1160 User Manual Configuration and Installation Chapter 2 Front Connector Signal Descriptions Pin Signal Name Description Al A3 A5 A7 NO lt 15 0 gt Normally Open Contact These are the A9 All A13 normally open contacts of the relays A15 A17 A19 15 through 0 A21 A23 A25 A27 A29 A31 B2 B4 B6 B8 COM lt 15 0 gt Common Contact These are the common B10 B12 B14 contacts of the relays 15 through 0 B16 B18 B20 B22 B24 B26 B28 B30 B32 C1 C3 C5 C7 NC lt 15 0 gt Normally Closed Contact These are the C9 C11 C13 normally closed contacts of the relays C15 C17 C19 15 through 0 C21 C23 C25 C27 C29 C31 All contacts have a working common mode voltage of 250 VAC or VDC The contact to contact breakdown voltage is 750 Vrms The contact to coil breakdown voltage is 1 500 Vrms Please refer to the module specifications listed in Appendix A for further details before connecting the signals to the relay contacts Contact Protection for Inductive Load Connections When inducti
83. onnected in parallel causes the energy stored in the coil to flow to the coil in the form of current and dissipates it as joule heat at the resistance component of the inductive load This circuit further delays the release time compared to the CR circuit 2 to 5 times the release time listed in the catalog Effective when the release time in the diode Circuit is too long varistor this circuit prevents excessively high voltages from being applied across the Varistor circuit contacts This circuit also slightly delays the contacts if the power supply voltage is 24 or 48V and the voltage across the load is 100 to 200V e Avoid using the protection circuits shown in the figures on the right Although DC inductive loads are usually more difficult to switch than resistive loads use of the proper protection circuit will raise the characteristics to that for resistive loads Fig 15 Although extremely effective in arc suppression as the contacts open the contacts are susceptible to welding since energy is stored in C when the contacts open and discharge current flows from C when the contacts close SCXI 1160 User Manual F 4 through the CR circuit causing faulty operation If used with AC voltage be sure the impedance of the load is sufficiently smaller than that of the CR circuit Using the stable voltage characteristics of the release time Effective when connected to both Appendix F adverse effect Typical contact pr
84. onnections If high voltages 242 Vrms are present the safety earth ground wire must be connected to the safety earth ground solder lug on the SCXI 1324 terminal block This provides protection against electric shock when the terminal block is not connected to the chassis To connect the safety earth ground to the strain relief tab run an earth ground wire in the cable from the signal source to the terminal block National Instruments is not liable for any damages or injuries resulting from inadequate safety earth ground connections Use this module only with a UL Listed SCXI chassis SCXI 1160 User Manual 2 4 National Instruments Corporation Chapter 2 Configuration and Installation The jumpers are used as follows e Jumper WI connects a pullup resistor to the SERDATOUT signal on the rear signal connector e Jumpers W2 W3 and W4 select whether the SCXI 1160 is to be connected to a DIO board or to an MIO board If nothing is cabled to the rear signal connector of the SCXI 1160 the position of these jumpers is irrelevant e Jumper W5 carries the SCXIbus MISO line after buffering to the SERDATOUT signal on the rear signal connector Further configuration of the board is software controlled and will be discussed later in this chapter Jumper Configuration All five jumpers on the SCXI 1160 are for digital communication between the data acquisition board and the SCXI 1160 module Only one module per chassis is connected to the
85. otection circuits are given in the table below O Good x No Good Device Selection As a guide in selecting r and c r 0 5 to 19 per 1V contact voltage c 0 5 to 1uF per 1A contact current Values vary depending on the properties of the load and variations in relay characteristics Capacitor c acts to suppress the discharge the moment the contacts open Resistor r acts to limit the current when the power is turned on the next time Test to confirm Use a capacitor with a breakdown voltage of 200 to 300V Use AC type capacitors non polarized for AC circuits Use a diode with a reverse breakdown voltage at least 10 times the circuit voltage and a forward current at least as large as the load current In electronic circuits where the circuit voltages are not so high a diode can be used with a reverse breakdown voltage of about 2 to 3 times the power supply voitage 7 Use a zener diode with a zener voltage about the same as the power supply voltage Although extremely effective in arc suppression as the contacts open the contacts are susceptible to welding since charging current flows to C when the contacts close National Instruments Corporation Appendix F e Mounting the Protective Device In the actual circuit it is necessary to locate the protective device diode resistor capacitor varistor etc in the immediate vicinity of the load or contact if located too far away t
86. pter 5 Example 1 You want to set all the relays in their NC position that are connected to their COM position on an SCXI 1160 in Slot 1 of an SCXI 1000 chassis The SCXI 1160 is directly cabled to a data acquisition board The programming steps are as follows 1 Select the Status Register and check to make sure the relays are not switching Refer to Chapter 4 Register Descriptions and to the section Timing Requirements and Communication Protocol in Chapter 2 Configuration and Installation 2 Following the procedure given in the Register Writes section of this chapter write 11111111 11111111 00000000 00000000 to the Data Register of the SCXI 1160 in Slot 1 Example 2 An SCXI 1000 chassis has four SCXI 1160 modules in Slots 1 2 3 and 4 The SCXI 1160 in Slot 4 is cabled to the data acquisition board You want to connect the NO position to the COM position on all of the modules and leave all the other channels unchanged The channels of interest in each slot are as follows e Channel 3 on the SCXI 1160 in Slot 1 e Channels 0 through 2 on the SCXI 1160 in Slot 4 e Channels 10 7 5 and 3 on the SCXI 1160 in Slot 3 The programming steps are as follows 1 Following the procedure given in the Register Writes section of this chapter write 00000000 00000000 00000000 00001000 to the Data Register of the SCXI 1160 in Slot 1 2 Following the procedure given in the Register Writes section of this chapter write 00000000 0000000
87. put logic high voltage 3 7 V minimum at 4 mA maximum Vo output logic low voltage 0 4 V maximum at 4 mA maximum Timing Requirements and Communication Protocol Communication Signals This section describes the methods for communicating on the Serial Peripheral Interface SPI bus and their timing requirements The communication signals are SERDATIN DAQD A SLOTOSEL SERDATOUT and SERCLK Furthermore Slot 0 produces SS according to data acquisition board programming therefore SS timing relationships will also be discussed For information on the Slot 0 Slot Select Register consult Chapter 4 Register Descriptions Use the following data acquisition board determines to which slot it will talk to by writing a slot select number to Slot 0 In the case of an SCXI 1001 chassis this write also determines to which chassis the data acquisition board will talk SCXI 1160 User Manual 2 19 National Instruments Corporation Chapter 2 Configuration and Installation Use the following procedure for selecting a slot in a particular chassis Figure 2 8 illustrates the timing of this procedure with the example of selecting Slot 11 in Chassis 9 Notice that the factory default chassis address for the SCXI 1000 is address 0 For information on changing the address of your chassis consult the SCX 1000 1001 User Manual An SCXI 1000 chassis will respond to any chassis number I SLOTOSEL N K ITss_dis SS X l i Chassis Y I SS 11 Telk wa
88. r National Instruments uses for this mating connector is as follows e ERNI Components Inc part number 913524 Unpacking Your SCXI 1160 module is shipped in an antistatic package to prevent electrostatic damage to the module Several components on the module can be damaged by electrostatic discharge To avoid such damage in handling the module take the following precautions e Touch the antistatic package to a metal part of your SCXI chassis before removing the module from the package e Remove the module from the package and inspect the module for loose components or any other sign of damage Notify National Instruments if the module appears damaged in any way Do not install a damaged module into your SCXI chassis SCXI 1160 User Manual 1 4 National Instruments Corporation Chapter 2 Configuration and Installation This chapter describes the SCXI 1160 jumper configurations installation of the SCXI 1160 into the SCXI chassis signal connections to the SCXI 1160 and cable wiring Module Configuration The SCXI 1160 includes five jumpers that are shown in the parts locator diagrams in Figures 2 1 and 2 2 Figure 2 1 shows the general parts locator diagram of the SCXI 1160 and Figure 2 2 shows a detailed parts locator diagram of the SCXI 1160 National Instruments Corporation 2 1 SCXI 1160 User Manual Configuration and Installation Chapter 2 Grounding Screw SCXIbus Connector D gt oO v Cc Cc Q O
89. s FFFF hexadecimal to the Address Handler This selects the Parking Register and makes the module registers more immune to noise 4 Pull SLOTOSEL low to deassert the SS line and establish conditions for writing a new slot select number to the Slot 0 Slot Select Register 5 If you are not selecting another slot write zero to the Slot 0 Slot Select Register National Instruments Corporation 2 24 SCXI 1160 User Manual Configuration and Installation Chapter 2 Figure 2 13 illustrates a read of the SCXI 1160 Status Register after the relays have switched states SLOTOSEL DAQD A SS Tswitching SERDATOUT ES Relays switching Relays Finish Switching Tswitching 20 msec maximum Figure 2 13 SCXI 1160 Status Register Timing Diagram For further details on programming these signals refer to Chapter 5 Programming SCXI 1160 User Manual 2 25 National Instruments Corporation Chapter 3 Theory of Operation This chapter contains a functional overview of the SCXI 1160 module and explains the operation of each functional unit making up the SCXI 1160 Functional Overview The block diagram in Figure 3 1 illustrates the key functional components of the SCXI 1160 Arc Suppressor pads Relays 0 through 15 NC 0 COM 0 Module ID Register NO 0 NC 1 COM 1 Data Register Rear Signal Connector NO 1 Digital Interface H 5 2 Q o g S Q ral g aa NC 14
90. s rising edge clocks the data If you are using an MIO 16 board writing to the EXTSTROBE register pulses EXTSTROBE low and then high accomplishing steps 3b and 3c 4 Set SLOTOSEL to 1 This asserts the SS line of the module whose slot number was written to Slot 0 If you are using multiple chassis only the appropriate slot in the chassis whose address corresponds to the written chassis number is automatically selected When no communication is taking place between the data acquisition board and any modules write zero to the Slot Select Register to ensure that no accidental writes occur SCXI 1160 User Manual 5 2 National Instruments Corporation Chapter 5 Programming 5 If you are writing to a Data Register you must first write to the Address Handler address 0001 hexadecimal a Establish the desired SERDATIN level corresponding to this bit b Clear SERCLK to 0 c Set SERCLK to 1 clock the data If you are using an MIO 16 board writing to the EXTSTROBE register pulses EXTSTROBE low and then high accomplishing steps 5b and 5c d After you have written all the address bits clear DAQD A to 0 This selects the Data Register and the data on the MOSI line is written to it 6 For each bit to be written to the Data Register a Establish the desired SERDATIN level corresponding to this bit b Clear SERCLK to 0 c Set SERCLK to 1 clock the data If you are using an MIO 16 board writing to the EXTSTROBE register p
91. scotanacnss E 14 SCXE1350 Installation Sn RER Gr Riv dr di hae oda adhe Geena E 14 SCXI 1343 Rear Screw Terminal Adapter isa ascsyasdsesoskcesonseceascansacascosntys E 15 S RIE ETS is en A Se E E 16 Appendix F Aromat Relay Technical Data 0 0 0 0 0 0cc ccc cscsesesesesesesesesesescsesesescseseseseseseseseass F 1 Appendix G Customer Communication G 1 GIOSSATY ER Rd es Glossary 1 1 06 2 CPR PR EE is Index 1 National Instruments Corporation vii SCXI 1160 User Manual Figures Figure 1 1 SCXI 1160 Relay Module 5 scsivsccecsssusssatiedsssendbeasioxasns tenvasdseavncaeseeduncaedeaswess 1 1 Figure 2 1 SCXI 1160 General Parts Locator Diagram cee ee esse eeseceeeeeeeeeeseeeaeeees 2 2 Figure 2 2 Detailed Parts Locator Diagramme es eee ce 2 3 Figure 2 3 SCXI 1160 Front Connector Pin Assignment 000 ee eeeeeeeeeceeeneeeneeeneeeeees 2 9 Figure 2 4 Contact Protection Using a Flyback Diode for DC Inductive Loads 2 11 Figure 2 5 Are Suppressor Pad Locations o 22 05 c iss5edecadsenea hace scant secesuasdetelsunedesedassesecedesazs 2 12 Figure 2 6 SCXI 1324 Parts Locator Diagram 00 eee ee eeseeeeeecnseceseeeseecsaeceeeeeneeesaeeees 2 14 Figure 2 7 SCXI 1160 Rear Signal Connector Pin Assignment 2 16 Figure 2 8 Slot Select Timing Diagramme ss ES nn rennes tee 2 20 Figure 2 9 Serial Data Timing Diioram ss seins nement 2 21 F
92. sh you can write address FFFF hexadecimal to the Address Handler This selects the Parking Register and makes the module registers more immune to noise National Instruments Corporation 2 22 SCXI 1160 User Manual Configuration and Installation Chapter 2 4 Pull SLOTOSEL low to deassert the SS line and establish conditions for writing a new slot select number to the Slot 0 Slot Select Register 5 If you are not selecting another slot write zero to the Slot 0 Slot Select Register Figure 2 11 illustrates a write to the SCXI 1160 Data Register of the binary pattern 10000011 00001111 00000000 00000000 Tdelay3 D 4 SLOTOSEL T DAQD A pe l tam a aa ke Tdelay1 Tdelay2 SS SERIK INNAANAANANNANNNNNANANNANNANNNNNT SERDATIN XXi lo o o o ofi ilo o 0 oft 111000000000000 0 0 0 0RR Tdelay1 DAQD A low to SERCLK first falling edge 180 nsec Tdelay2 SERCLK last rising edge to DAQD A high 365 nsec Tdelay3 DAQD A high to SLOTSEL low 400 nsec Figure 2 11 Data Register Write Timing Diagram To read from the Module ID Register follow these steps 1 Initial conditions SS asserted low SERDATIN don t care DAQD A 0 SLOTOSEL 1 SERCLK 1 and has not changed since DAQD A went low 2 For each bit to be read Set SERCLK 0 SERCLK 1 This rising edge clocks the data Read the level of the SERDATOUT line 3 Pull DAQD A high This disables further reads from the Module ID Regist
93. ssignment National Instruments Corporation D 1 SCXI 1160 User Manual SCXI 1160 Front Connector Front Connector Signal Descriptions Pin Al A3 A5 A7 A9 All A13 A15 A17 A19 A21 A23 A25 A27 A29 A31 B2 B4 B6 B8 B10 B12 B14 B16 B18 B20 B22 B24 B26 B28 B30 B32 C1 C3 C5 C7 C9 C11 C13 C15 C17 C19 C21 C23 C25 C27 C29 C31 Signal Name NO lt 15 0 gt COM lt 15 0 gt NC lt 15 0 gt Appendix D Description Normally Open Contact These are the normally open contacts of the relays 15 through 0 Common Contact These are the common contacts of the relays 15 through 0 Normally Closed Contact These are the normally closed contacts of the relays 15 through 0 Further information is given in Chapter 2 Configuration and Installation SCXI 1160 User Manual National Instruments Corporation Appendix E SCXI 1160 Cabling This appendix describes how to use and install the hardware accessories for the SCXI 1160 e SCXI 1340 cable assembly e SCXI 1341 Lab NB Lab PC and Lab PC cable assembly e SCXI 1342 PC LPM 16 cable assembly e SCXI 1344 Lab LC cable assembly e SCXI 1348 DIO 32 cable assembly e SCXI 1180 feedthrough panel e SCXI 1302 50 pin terminal block e SCXI 1351 one slot cable extender e SCXI 1343 screw terminal adapter SCXI 1340 Cable Assembly The SCXI 1340 cable assembly connects an MIO 16 or DIO 24 board to an SCXI 1160 mod
94. steps 1 SS goes low enabling communication with the board 2 Write 0001 hexadecimal to the Address Handler This selects the Data Register 3 D A goes low indicating that the information sent on the MOSI line is data 4 The serial data is available on MOSI and SPICLK clocks it into the register 5 SS goes high and D A goes high indicating the end of communication This action latches the Data Register bits At reset time or at power up the state of the Data Register and relays is unknown To set the relays to a known state perform a write to the Data Register Note If a power loss or a reset occurs the state of the relays is unchanged The Module ID Register connects to MISO on the SCXIbus The Module ID Register is an 8 bit parallel serial in serial out shift register and an SPI communication adapter The contents of the Module ID Register are written onto MISO during the first four bytes of transfer after selecting the Module ID Register in the Address Handler Zeros are written to MISO thereafter until the Module ID Register is deselected The SCXI 1160 module ID is hex C The Status Register is a 1 bit register that indicates whether or not the relays are switching Relay Channels The SCXI 1160 consists of 16 independent one form C relays Each relay has three connections at the front connector the common COM the normally closed NC and the normally open NO positions which are available at each relay To pro
95. t You can submit technical support questions to the applications engineering team through e mail at support natinst com Remember to include your name address and phone number so we can contact you with solutions and suggestions National Instruments Corporation G 1 SCXI 1160 User Manual Telephone and Fax Support National Instruments has branch offices all over the world Use the following list to find the technical support number for your country If there is no National Instruments office in your country contact the source from which you purchased your software to obtain support Branch Offices Australia Austria Belgium Brazil Canada Ontario Canada QuEbec Denmark Finland France Germany Hong Kong India Israel Italy Japan Korea Mexico D F Mexico Monterrey Netherlands Norway Singapore Spain Madrid Spain Barcelona Sweden Switzerland Taiwan United Kingdom United States Phone Number 03 9879 5166 0662 45 79 90 0 02 757 00 20 011 284 5011 905 785 0085 514 694 8521 45 76 26 00 09 725 725 11 0 1 48 14 24 24 089 741 31 30 2645 3186 91805275406 03 6120092 02 413091 03 5472 2970 02 596 7456 5 280 7625 8 357 7695 0348 433466 32 84 84 00 2265886 91 640 0085 93 582 0251 08 587 895 00 056 200 51 51 02 2377 1200 01635 523545 512 795 8248 Fax Number 03 9879 6277 0662 45 79 90 19 02 757 03 11 011 288 8528 905 785 0086 514 694 4399 45 76 26 02 09 725 725 55 0 1 48 1
96. tact melts or boils and the contact material transfers to the other contact As the number of switching operations increases uneven contact surfaces develop such as those shown in Fig 14 After a while the uneven contacts lock as if they were welded together This often occurs in circuits where sparks are produced at the moment the contacts make such as when the DC current is large for DC inductive or capacitive loads or when the inrush current is large several amperes or several tens of amperes Contact protection circuits and contact materials resistant to material transfer such as AgW or AgCu are used as countermeasures Generally a concave formation appears on the cathode and a convex formation appears on the anode For DC capacitive loads several amperes to several tens of amperes it is always necessary to conduct actual confirmation tests ee Re Material transfer of contacts Fig 14 SCXI 1160 User Manual Aromat Relay Information counter emf to a low level However note that incorrect use will result in an e Contact Protection Circuit Use of contact protective devices or protection circuits can suppress the Ac Be If the load is a timer leakage current flows CR circuit If the load is a relay or solenoid the release time lengthens Effective when connected to both contacts if the power supply voltage is 24 or 48V and the voltage across the load is 100 to 200V The diode c
97. talogues or similar data sheets but this alone is not sufficient With special contact circuits for the individual case the maker either estimates from the past experience or makes test on each occasion Also in catalogues and similar data sheets the control capacity that is mentioned is limited to resistive load but there is a F 2 broad meaning indicated for that class of relay and ordinarily it is proper to think of current capacity as that for 125V AC circuits Current The current at both the closing and opening time of the contact circuit exerts an important influence For example when the load is either a motor or a lamp to the extent of the inrush current at the time of closing the circuit wear of the contacts and the amount of contact transfer increase and contact welding and contact transfer make contact separation impossible National Instruments Corporation Appendix F 3 Contact Protection e Counter EMF When switching inductive loads with a DC relay such as relay sequence circuits DC motors DC clutches and DC solenoids it is always important to absorb surges e g with a diode to protect the contacts When these inductive loads are switched off a counter emf of several hundred to several thousand volts develops which can severely damage contacts and greatly shorten life if the current in these loads is relatively small at around 1A or less the counter emf will cause the ignition of a g
98. tect the relay contacts from inductive loads arc suppressors may be installed at the pads which are at each relay Refer to the Contact Protection for Inductive Load Connections section of Chapter 2 Configuration and Installation for further details on contact protection All 16 relays are two coil latching relays One coil is for resetting and the other is for setting the relay The Data Register controls the relays as follows The 16 LSBs of the Data Register control the set coils When the set coil is energized the COM position connects to the NO position The 16 MSBs of the Data Register control the reset coils When the reset coil is energized the COM connects to the NC position Never energize both coils at the same time After a write to the Data Register all relay coils are driven for a period of time 20 msec maximum to ensure that the relays have switched states Then the Data Register outputs go to a high impedance state this ensures that the heating effect of the relay coils is minimal thus reducing the thermal electromotive force emf that may be generated across the contacts Each relay can be set the relay COM position connected to the NO position or reset the relay COM position connected to the NC position without affecting the other relays or all relays can change states at the same time However each time a relay changes its state the Data Register is rewritten to To reduce power consumption thermal emf and help ext
99. tem or application Contents About This Manual ESS EE a Nt A faa Oi nt en xi Organization of This Manual 2c anceisjsccesseaeescidaysiecisdsidesschsedaensesead shavesceea sd codansdnseieeeanneaes xi Conventions Used in This Manual sc s cik grnocashequncesegngtosduevn ge cncaate goad cane cheaueasagnad elowtgtas xii Related Documentations siennes xiii Customer Communication sesessseeesssesesesereesttssrtssttstetesstesstsseesssttsstessersseesseeessesseesset xiii Chapter 1 NRE ECE NEN OE de di ead ca a a aa a 1 1 What Your Kit Should Contain iis RSR en a see oe tn Ne UN 1 2 COUCH SONATA cer dass nc ner E 1 2 Optional Equipment ss essen eS pete Ries soe eet andes ne Met NA a mnt 1 3 ona CADET tn nine ni delete ei 1 3 RSID A AC ILIA SR lee A alee te en Re ge aan ete 1 4 Chapter 2 Configuration and Installation 2 1 Module Configuration steel sssdettesseanten 2 1 Jumper Configuration gars tacit Ana ne ae ne nt ne tone duns 2 5 Jumper WA sis watcec ia senseasstapacen vedhustnetedanedansedusseen vedesdatensdhedadtes eds 2 5 J mper WD Sa ans nn een in nine einen 2 5 Using Jumpers W1 and W5 sinistres eeeneneitenenses 2 5 Using Jumpers W2 W3 and W iiinc simon 2 7 Hardware Installation seeni E E a ae ne es 2 7 Signal Connections seronok eisai cee lee te es en end EE E ee 2 8 Front OME CRON SES e ee AT 2 9 Front Connector Signal Descriptions sesesessesseesesseseresressessresrersersres
100. ter 5 Programming contains a functional programming description of the SCXI 1160 and Slot 0 e Appendix A Specifications lists the specifications for the SCXI 1160 e Appendix B Rear Signal Connector describes the pinout and signal names for the SCXI 1160 50 pin rear signal connector including a description of each connection e Appendix C SCX bus Connector describes the pinout and signal names for the SCXI 1160 96 pin SCXIbus connector including a description of each connection e Appendix D SCX1 1160 Front Connector describes the pinout and signal names for the SCXI 1160 front connector including a description of each connection e Appendix E SCXI 1160 Cabling describes how to use and install the hardware accessories for the SCXI 1160 e Appendix F Aromat Relay Technical Data contains technical data on Aromat Corporation relays National Instruments Corporation xi SCXI 1160 User Manual About This Manual e Appendix G Customer Communication contains forms you can use to request help from National Instruments or to comment on our products e The Glossary contains an alphabetical list and description of terms used in this manual including abbreviations acronyms metric prefixes mnemonics and symbols e The Index contains an alphabetical list of key terms and topics in this manual including the page where you can find each one Conventions Used in This Manual The following conventions are used in this man
101. three jumpers in the MIO position If nothing is cabled to the rear signal connector of the SCXI 1160 the position of these jumpers is irrelevant Hardware Installation You can install the SCXI 1160 in any available SCXI chassis After you have made any necessary changes and have verified and recorded the jumper settings on the form in Appendix G Customer Communication you are ready to install the SCXI 1160 The following are general installation instructions consult the user manual or technical reference manual of your SCX chassis for specific instructions and warnings 1 Turn off the computer that contains the data acquisition board or disconnect it from your SCXI chassis 2 Turn off the SCXI chassis Do not insert the SCXI 1160 into a chassis that is turned on 3 Insert the SCXI 1160 into the board guides Gently guide the module into the back of the slot until the connectors make good contact If a cable assembly has already been installed in the rear of the chassis the module and cable assembly must be firmly engaged however do not force the module into place 4 Screw the front mounting panel of the SCXI 1160 to the top and bottom threaded strips of your SCXI chassis National Instruments Corporation 2 7 SCXI 1160 User Manual Configuration and Installation Chapter 2 5 If this module is to be connected to an MIO 16 or a DIO 24 data acquisition board attach the connector at the metal end of the SCXI 1340 cable asse
102. tion and write procedure 5 2 to 5 3 register writes 5 1 to 5 2 SCXIbus to SCXI 1160 rear signal connector equivalents 5 2 SCXI 1160 registers 4 1 National Instruments Corporation Index 7 SCXI 1160 User Manual Index Slot Select Register 4 7 to 4 8 Status Register definition 3 7 description 4 5 jumper connections 2 5 2 6 reading from Status Register 2 24 to 2 25 timing diagram 2 24 to 2 25 relays 3 7 to 3 8 See also contact protection Aromat relays contacts F 2 to F 6 electronic circuit drive F 6 contact rating specifications A 1 controlling with Data Register 3 7 to 3 8 4 4 5 1 gold plating on relay 2 8 programming example 5 4 theory of operation 3 7 to 3 8 truth table for resetting and setting relays 4 4 RESET signal 3 4 C 3 S SCXI 1160 module See also installation jumper configuration block diagram 3 1 illustration 1 1 kit contents 1 2 optional equipment 1 3 to 1 4 optional software 1 2 to 1 3 overview 1 1 unpacking 1 4 SCXI 1180 feedthrough panel cable assembly E 10 front panel installation E 12 installation E 10 to E 12 rear connections E 11 SCXI 1302 50 pin terminal block cover removal E 13 installation E 13 wiring procedure E 12 SCXI 1324 terminal block 2 12 to 2 15 hazardous voltage cautions 2 13 installation 2 15 overview 2 12 to 2 13 parts locator diagram 2 14 signal connection procedure 2 13 SCXI 1340 cable assembly E 1 to E 2 instal
103. tor SCXI 1160 User Manual E 12 National Instruments Corporation Appendix E SCXI 1160 Cabling 50 Pin Thumbscrew Connector Cutout Insert Screwdriver in Groove and Rotate to Pry Open Figure E 5 SCXI 1350 Cover Removal SCXI 1302 Installation Follow these steps to install the SCXI 1302 1 Install an SCXI 1180 feedthrough panel as described in the SCXI 1180 Installation section 2 Wire the terminal block as previously described in the SCX1 1302 Wiring Procedure section 3 Connect the SCXI 1302 terminal block to the front panel connector on the SCXI 1180 feedthrough panel Be careful to fit the thumbscrews in the thumbscrew cutouts 4 Tighten the top and bottom captive screws on the back of the terminal block into the screw holes in the front panel to hold the SCXI 1302 securely in place Check the installation SCXI 1351 One Slot Cable Extender The SCXI 1351 cable extender is a miniature SCXI 1340 cable assembly Instead of connecting to an MIO board m away the SCXI 1351 female rear connector connects to a male breakout connector that must be in the rear connector space of the slot to the left The SCXI 1351 has a female mounting bracket connector that mates with the rear signal connector of a module and also has a male breakout connector on the ribbon cable for connecting to a feedthrough panel or more cable extenders National Instruments Corporation E 13 SCXI 1160 User Manual SCXI 1160 Cabling Appendi
104. trodes space distance taken when selecting the type of relay in be determined from sequence circuit presence of barrier etc circuits where different voltages are diagrams The construction of the Applications of Relays in Electronic Circuits ELECTRONIC CIRCUIT DRIVE BY MEANS OF A RELAY e Chatterless electronic circuit a Even though a chatterless characteristic 2 he Pasaat A te be fa lei Per ira Go section induced into the contact section is a feature of relays this is to the fullest extent a chatterless electrical circuit much the same as a mercury relay To meet the requirement for such circuits as the input to a binary counter there is an electronic chatterless method in which chattering is absolutely not permissible Even if chattering develops on one side either the N O side contacts or the N C side contacts the flip flop does not reverse and the counter circuit can be fed pulsed without a miss However bouncing from the N O side to N C side must be absolutely avoided Fig 10 Triac drive With an electronic circuit using a direct drive from a triac the electronic circuit will not be isolated from the power circuit and because of this troubles due to erroneous operation and damage can develop easily The introduction of a relay drive is the most economical and most effective solution Photo coupler and pulse transformer circuits are complicated When a zero cross switching characteris SCXI 1160 Us
105. ual A This icon below bold italicized text denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash DIO board DIO board refers to the National Instruments AT DIO 32F MC DIO 24 MC DIO 32F NB DIO 24 NB DIO 96 NB DIO 32F PC DIO 24 and PC DIO 96 digital I O data acquisition boards unless otherwise noted italic Italic text denotes emphasis a cross reference or an introduction to a key concept Lab board Lab board refers to the National Instruments Lab LC Lab NB Lab PC and Lab PC boards unless otherwise noted MC MC refers to the Micro Channel series computers MIO board MIO board refers to the National Instruments AT MIO 16 AT MIO 16F 5 AT MIO 16X MC MIO 16 NB MIO 16 and NB MIO 16X multichannel I O data acquisition boards unless otherwise noted monospace Lowercase text in this font denotes text or characters that are to be literally input from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions variables filenames and extensions and for statements and comments taken from program code NB NB refers to the NuBus series computers PC PC refers to the IBM PC XT the IBM PC AT and compatible computers SCXIbus SCXIbus refers to the backplane in the chassis A signal on the backplane is referred to as the SCX
106. ual describes the electrical and mechanical aspects of the SCXI 1160 and contains information concerning its operation and programming The SCXI 1160 is a member of the National Instruments Signal Conditioning eXtensions for Instrumentation SCXI Series modules for the National Instruments data acquisition plug in boards This module is designed for switching and controlling low level and power signals The SCXI 1160 operates as 16 relay channels Each channel is isolated and independently configurable This manual describes the installation basic programming considerations and theory of operation for the SCXI 1160 Organization of This Manual The SCX1 1160 User Manual is organized as follows e Chapter 1 Introduction describes the SCXI 1160 lists the contents of your SCXI 1160 kit describes the optional software optional equipment and custom cables and explains how to unpack the SCXI 1160 kit e Chapter 2 Configuration and Installation describes the SCXI 1160 jumper configurations installation of the SCXI 1160 into the SCXI chassis signal connections to the SCXI 1160 and cable wiring e Chapter 3 Theory of Operation contains a functional overview of the SCXI 1160 module and explains the operation of each functional unit making up the SCXI 1160 e Chapter 4 Register Descriptions describes in detail the SCXI 1160 Address Handler the Module ID Register the Data Register the Status Register and the Slot 0 registers e Chap
107. ule It consists of a 50 conductor ribbon cable that has a 50 pin female connector at one end that connects to the I O connector of the data acquisition board and a mounting bracket at the other end Attached to the mounting bracket is the 50 pin female mounting bracket connector that connects to the rear signal connector of the module A male breakout connector is near the mounting bracket on the ribbon cable You can use this male breakout connector to extend the signals of the MIO 16 or DIO 24 board to an SCXI 1180 feedthrough panel or an SCXI 1181 breadboard module All 50 pins from the MIO 16 or DIO 24 board go straight to the rear signal connector You can use a standard 50 pin ribbon cable in lieu of the SCXI 1340 cable assembly The SCXI 1340 has the following advantages over the ribbon cable e The SCXI 1340 produces strain relief so that you cannot accidentally disconnect the cable e The SCXI 1340 includes a mounting bracket that mounts to the chassis so that you can remove and reinsert the module without explicitly removing the cable from the back of the chassis This is especially useful when the SCXI chassis is rack mounted making rear access difficult e The SCXI 1340 has an extra male breakout connector for use with the SCXI 1180 feedthrough panel or additional modules or breadboards that need a direct connection to the MIO 16 or DIO 24 board National Instruments Corporation E 1 SCXI 1160 User Manual SCXI 1160 Cabling Append
108. ulses EXTSTROBE low and then high accomplishing steps 6b and 6c d After clocking the last data bit if you do not want to write to or read another register write hexadecimal address FFFF to the Address Handler to increase noise immunity of the module when it is in the quiescent state This also latches the data into the Data Register Selecting another register also latches the data in the Data Register 7 Pull SLOTOSEL low to deassert the SS line and establish conditions for writing a new slot select number to the Slot 0 Slot Select Register 8 If you are not selecting another slot write zero to the Slot 0 Slot Select Register If you are selecting another slot repeat the procedure starting at step 3 For a timing illustration of a Data Register write see Figure 2 11 Data Register Write Timing Diagram Initialization The SCXI 1160 powers up with its Data Register content unknown If you reset the chassis the Data Register content stays unchanged and the relays maintain their previous states Examples This section describes how to program the SCXI 1160 either alone or in conjunction with other modules The following examples are intended to aid your understanding of module and Slot 0 programming It will be helpful to refer to the bit descriptions for the Data Register Status Register and Address Handler in Chapter 4 Register Descriptions National Instruments Corporation 5 3 SCXI 1160 User Manual Programming Cha
109. uments data acquisition board and cable assembly you do not need to read the remainder of this chapter If you will also use the SCXI 1180 feedthrough panel the SCXI 1343 rear screw terminal adapter or the SCXI 1351 one slot cable extender with the SCXI 1160 read this section SCXI 1160 User Manual 2 15 National Instruments Corporation Chapter 2 Configuration and Installation Figure 2 7 shows the pin assignments for the SCXI 1160 rear signal connector SERDATIN DAQD A SLOTOSEL DIO SERCLK MIO SERCLK DIO SERDATOUT 50 DIG GND DIO Figure 2 7 SCXI 1160 Rear Signal Connector Pin Assignment National Instruments Corporation 2 16 SCXI 1160 User Manual Configuration and Installation Chapter 2 Rear Signal Connector Signal Descriptions Pin Signal Name Description 24 or 50 DIG GND Digital Ground Supplies the reference for data acquisition board digital signals and is tied to the module digital ground Pin 50 is for DIO type boards Pin 24 is for MIO type boards and jumper W3 selects it 25 SERDATIN Serial Data In Taps into the SCXIbus MOSI line to provide serial input data to a module or Slot 0 26 or 47 SERDATOUT Serial Data Out Taps into the SCXIbus MISO line to accept serial output data from a module Pin 47 is for DIO type boards Pin 26 is for MIO type boards and jumper W2 selects it 27 DAQD A Data Acquisition Board Data Address Line Taps into the SCXIbus D A line to indicate
110. ve loads are connected to the relays a large counter electromotive force may occur at relay switching time due to the energy stored in the inductive load These flyback voltages can severely damage the relay contacts and greatly shorten the life of the relay It is best to limit these flyback voltages at your inductive load by installing a flyback diode for DC loads or an MOV for AC loads Refer to the section 3 Contact Protection in Appendix F Aromat Relay Technical Data for further details In addition the module contains pads on which you can place an arc suppressor protection circuit to limit the voltage spike generated during the switching of inductive loads These pads are located between the COM position and the NO position and between the COM position and the NC position of the relays SCXI 1160 User Manual 2 10 National Instruments Corporation Chapter 2 Configuration and Installation Inductive Load FX Flyback Diode Figure 2 4 Contact Protection Using a Flyback Diode for DC Inductive Loads To determine where to place each arc suppressor refer to Table 2 2 and Table 2 3 which indicate the channel and suppressor pad assignments Table 2 2 COM to NO Arc Suppressor Placement COM to NO Channel Number Transient Voltage Suppressor Reference Designator IA U amp D National Instruments Corporation 2 11 SCXI 1160 User Manual Configuration and Installation Chapter 2 Table 2 3 COM to NC Arc
111. x E SCXI 1351 Installation Follow these steps to install the SCXI 1351 1 Make sure that the computer and the SCXI chassis are turned off 2 Install the SCXI module in the chassis 3 Connect the rear connector of the cable extender to the breakout connector in the adjacent slot This attachment is similar to Step 3 in the SCX 1180 Installation section as shown in Figure E 6 4 Plug the mounting bracket connector to the module rear signal connector An alignment tab on the bracket will enter the upper board guide of the chassis 5 Screw the mounting bracket to the threaded strips in the rear of the chassis Check the installation Multiple Chassis Connections for the SCXI 1160 The SCXI 1160 can operate in a multiple chassis system with the DIO 24 DIO 96 MIO 16 and AT MIO 64F 5 boards A multiple chassis system can consist of up to eight SCXI 1001 chassis controlled by the same data acquisition board Notice that you cannot use the SCXI 1000 in a multiple chassis system For each chassis you will need an SCXI 1350 multichassis adapter board and an NB1 ribbon cable SCXI 1350 Multichassis Adapter Note When connecting multiple chassis you should use a 0 5 m length ribbon cable between chassis to minimize cable length and maintain signal integrity However you can use a 1 0 m cable from the data acquisition board to the first chassis When you are using the AT MIO 16D or AT MIO 64F 5 or DIO 96 board use an NB5 ribbon cable fro

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