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MetraBus User`s Manual - Measurement Computing

1. EE 8 1 B D SETUP 255 bep i REDE nre neret i 8 1 8 3 EXTERNAL POWER SUPPLY USING THE 50 PIN RIBBON CABLE cscssssssececeesesssaececececsesnsaseecececeessaeeeseeeceensas 8 2 8 4 EXTERNAL POWER SUPPLY USING THE METRABUS POWER CABLE C POWER X eese 8 2 8 5 THE MBUS PWR EXPANSION POWER CONNECTORS iiie 8 3 8 6 POWER CONNEGTOR 8 4 8 7 EXPANSION CONNECTOR tetro 8 5 8 8 POWER DISTRIBUTION tees beret Eta NES 8 5 8 9 OUTPUT GROUND JUMPER tei eb te tec esee tee ee ONERE RUNE 8 6 8 TO CNSEALUATION Cob CoA e e irte ied e OR ROS 8 7 S TT MBUS PWR SPECIFIGATIONS 4 edente tubae ove dtie eee ee Pe e E ORERENURES 8 7 iv 1 INTRODUCTION ComputerBoards MetraBus system provides a high quality low cost method to connect a variety of real world I O devices and signals to a personal or small computer Based on the MetraBus system developed by Keithley MetraByte ComputerBoards products are fully compatible with the Keithley system but take advantage of new technologies ComputerBoards system provides driver boards for the newer PC buses as well as a Windows 95 98 NT compatible software driver Finally Measurement Computing Corp provides a wider assortment of options
2. stessa seta suse ta sens tasto senses tuse tasses enses tuae 2 1 Zl INTRODUGCTION EAE AEE E RIEH 2 1 2 2 MDB64 INSTALLATION a 2 1 2 2 1 Installation using the InstaCal Software Utility eese nennen nennen 2 1 2 2 2 Setting the Base Address Switch ISA and PC104 MDB64 only eee 2 2 2 3 METRABUS POWER pU oe ple e e ter RS WARREN dere HU EARS RETE 2 3 2 3 SSV Power Juinpetzzcsssnesueseero HPV Uere ORE EPI ee e IRE 2 3 2 323 USC ED ei esinbe Rennen uae gue edente ug 2 3 2 3 3 Using an Auxiliary Power Supply sess ene en eene 2 3 2 3 4 External Power Supply using the 50 pin Ribbon Cable eene 2 4 2 3 5 External Power Supply Using the C POWER X series Power Cable eee 2 4 2 4 INTRODUCTION TO REGISTER LEVEL PROGRAMMING FOR THE MDB64 sss eee 2 4 2 4 1 Address Pointer ADRPTR Ree tette nerit eel ne iere EE ei esl CES 2 5 2 4 2 The Data I 0 Register DA TAIO re ett tbe te eme tereti ertet ue ii t etes Dus 2 6 2 4 8 Software 2 6 2 4 4 Notes on the Use of Compiled or Assembled Languages eese 2 6 29 MDB 64 SPECIFICATIONS segue ctuuscuecvscsneoursetceecs svencousvneekdebedvcevovseeenevlestecten utente eere eee ema 2 6 3 MEM 32 ELECTROMECHANICAL
3. Point to relay bank 0 of the MEM 32 OUT DATAIO 63 Turn on relays 0 5 turn off relays 6 amp 7 63 decimal 0011 1111 binary OUT ADRPTR MEM32 3 Point to relay bank 3 of the MEM 32 OUT DATAIO 128 Turn on relay 7 turn off relays 0 through 6 128 decimal 1000 000 0 binary 3 4 Using an Auxiliary Power Supply Whether an auxiliary power supply is necessary or not depends upon how the MEM 32 is used or how many are used in your application The user needs to determine the total amount of 5VDC current by determining the number of relays to be used turned on at any time plus the board s quiescent current Calculate the current requirements from specifications in Section 3 5 As a general rule of thumb an external power supply should be used when a MEM 32 is connected to the bus since the maximum possible current requirement for the MEM 32 exceeds the maximum allowable current supplied by the MDB64 CAUTION As described in the MDB64 user manual the MetraBus 50 pin ribbon cable is only capable of providing 1 Amp of continuous 5VDC current from the PC to the MetraBus I O board s If more than 1 Amp of 5VDC current or a combination of 5VDC and 15VDC supplies is needed a high quality external power supply such as the MBUS PWR is required NOTE If an external power supply is used in conjunction with the MDB64 MetraBus controller card place the MDB64 5V POWER jumper in the EXT position 3 4 3 4 1 External Po
4. 15 4 Amps max e 5VDC 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power capability 8 5 The MBUS PWR Expansion Power Connectors The MBUS PWR provides a pair of expansion and power connectors allowing the user to split the power distribution in a MetraBus system between multiple power supplies Figure 8 3 The EXPANSION connectors allow the bus and control signals to be daisy chained to multiple I O boards while isolating any further power distribution The POWER connectors pass both the power ground and bus control signals CAUTION Be sure to properly estimate the total load power of each group of I O boards and do not connect the POWER connectors of any two MBUS PWR boards MBUS PWR MBUS PWR Board 1 Board 2 ISA MDB64 I O BOARD I O BOARD Connectors Connector Connector Figure 8 3 MBUS PWR Expansion Connectors 8 3 8 6 Power Connector DATA Q I gt rel CONTROL WSTRB LLL 1 ADDRESS j 4 AS BUSY m 15V 15V 5V POWER 45V 5V 5V 5V P1 P3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 224 J gg NMQAQQAQAQAQAAQAQAQQQQ ZZZZ ZZZZZ ZZ2ZZ CA lt lt lt lt 5V POWER Figure 8 4 Power Connectors 1 and P3 8 4 8 7 Expa
5. Address 1 Board Address 2 and Board Address 3 Each MII 32 address corresponds to a bank of 8 digital inputs These are labeled on the board as Board Address 0 1 2 and 3 To read inputs on the MII 32 simply select the MetraBus address of the bank of inputs you would like to read via MDB64 Base Address 1 and read the input from the MII 32 via MDB64 Base Address 0 Each bit in the 8 bit data word represents a separate digital input labeled 0 through 7 corresponding to bits 0 7 The following program assumes the MDB64 board resides at Base Address 768 and the MII 32 board resides at MetraBus Address 4 Though written in BASIC this program can easily be generalized to any other language DATAIO 768 Declare the Data I O location MDB64 Base 0 ADRPTR 769 Declare the Address Pointer location MDB64 Base 1 MII32 24 Declare the MII 32 MetraBus Base Address OUT ADRPTR MII32 Point to relay bank 0 of the MII 32 DAT INP DATAIO Read the inputs read in binary where each bit represents a particular digital input OUT ADRPTR MII32 3 Point to relay bank 3 of the MII 32 DAT INP DATAIO Read the inputs read in binary where each bit represents a particular digital inputs 5 6 Using an Auxiliary Power Supply Whether an auxiliary power supply is necessary or not depends upon how many boards are connected in your application and how much power is required by each If you are using only MII 32 boards
6. All outputs 0 04 C max LED indicators for power output status 8 7 CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Power Output Connector type Current Rating Voltage Rating Auxiliary Power Output Connector Current Rating Voltage Rating Wire sizes ENVIRONMENTAL Operating temperature range Storage temperature range Humidity PHYSICAL Size MetraBus Cable type Connector Type 50 pin male header 4 connectors two of which carry power output and two with no connection to power pins gt 1000Vrms 1A max per pin 4 pin Molex 2 in parallel 10A max 250V AC DC Detachable screw terminal 15A max 300V max 12 22AWG 0 to 70 C 40 to 85 C 0 to 90 non condensing 16 x 4 8 inches 40 64 x 12 192 cm HITACHI 23100 series 50 cond flat ribbon 3M 3433 8 8 The EC Declaration of Conformity We Measurement Computing Corp declare under sole responsibility that the product MetraBus I O board family for ISA PCI CPCI and PC 104 bus Part Number Description to which this declaration relates meets the essential requirements is in conformity with and CE marking has been applied according to the relevant EC Directives listed below using the relevant section of the following EC standards and other informative documents EU EMC Directive 89 336 EEC Essential requirements relating to electromagnetic compatibility EU 55022 Class B Limits and methods of measurements of radi
7. CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Digital Input Connector type Current Rating Voltage Rating Wire sizes External Power Connector type Current Rating Voltage Rating METRABUS RIBBON CABLE Length Power 15V 10A 1A per pin max 15V 15V Propagation Delay ENVIRONMENTAL Operating temperature range Storage temperature range Humidity PHYSICAL Size Cable type Connector Type 4 consecutive address locations within the 64 available address locations 741 5373 Locations provided for installation of termination resistors 50 pin header male gt 1000Vrms 1A max per pin Detachable screw terminal 15A max 300V max 12 22AWG 4 pin Molex 2 in parallel 10A max 250V AC DC 100ft max 1A max 1A max 2ns ft typ 0 to 70 C 20 to 100 C 0 to 90 non condensing 16 x 4 8 inches 40 64 x 12 192 cm HITACHI 23100 series 50 cond flat ribbon 3M 5 6 3433 6 MIO 32 ISOLATED DIGITAL OUTPUT BOARD 6 1 Introduction The MIO 32 is a 32 channel digital output board for the MetraBus data acquisition and control system Figure 6 1 The output channels are DTL TTL NMOS CMOS and zero to 5 VDC compatible Outputs can be as high as 20 VDC Some uses of the MIO 32 include computer control of relays pumps solenoids feedback control and programmable square wave generator 8 OPTO ISOLATORS 8 OPTO ISOLATORS BOARD BOARD ADDRESS 3 ADDRESS 2 DECO
8. MBUS PWR s maximum output power capability 3 5 MEM 32 Specifications POWER CONSUMPTION 5V relays off all 4 banks 5V relays all 4 banks 350mA typical 425mA max 2 10A typical 2 45A max RELAY SPECIFICATIONS Number of output channels Contact Configuration Contact Rating resistive load Contact Resistance Isolation Between open contacts Between coil and contacts Operate Time Release Time Vibration Shock Insulation Resistance Life Expectancy Miscellaneous 32 4 banks of 8 relays 1 form C SPST per channel 7 10A 125V AC 70 milliohms typ 750V AC 50 60HZ 1 min 1500V AC 50 60HZ 1 min 10 milliseconds max 5 milliseconds max 10 to 55 Hz Dual amplitude 1 5mm 10G 11 milliseconds 100M ohms min 500V 1 minute 10 7 mechanical operations min at rated load Annunciator LED s provided for channel selection indication 3 5 METRABUS INTERFACE Digital type banks 1 4 Address space requirement Miscellaneous CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Screw Terminal Connector type Current Rating Voltage Rating Wire sizes External Power Connector type Current Rating Voltage Rating METRABUS RIBBON CABLE Length Power 5V 15V 15V Propagation Delay ENVIRONMENTAL Operating temperature range Storage temperature range Humidity PHYSICAL Size MetraBus Cable type Connector Type 74LS540 4 consecutive address locat
9. MetraBus reset location OUT ADRPTR 01 Set the address pointer to address 1 OUT DATAIO 45 Write data 45 to address 1 Set the MetraBus address pointer by issuing a single command to the MetraBus controller board Once set the address pointer is latched and need not be reset until a different address is required Writing to and reading data from a MetraBus I O board is transparent once the address pointer is set Issuing an OUT command will write data to the targeted I O board Likewise issuing an INP command will retrieve data from the I O board via the data I O path OUT ADRPTR 01 set address to 1 OUT DATAIO 45 write data 45 to address 1 VAL INP DATAIO read back data from 1 The MetraBus controller board and all attached MetraBus I O boards may be reset by writing to the reset address Here is an example in BASIC 40 OUT MRESET 00 clear the MetraBus 1 4 Programming I O Boards MetraBus boards fall into three major categories e Digital in and out e Analog in and out Counter Timer MetraBus digital I O boards are programmed with byte wide 8 bits read and write commands Driving a single digital line high or reading the status of a single line requires one bit Therefore eight lines bits are controlled 1 2 when writing or reading the digital I O boards Data to a MetraBus digital output board are latched and can be read back from the board Data read back is usable when manipulating the I O lines making digi
10. Remember that each MEM 32 uses four consecutive addresses of the 64 addresses that are available and must be set to an unused non overlapping address in order to avoid bus conflicts 3 After setting the board address connect the MEM 32 to the MDB64 controller card via the MetraBus cable The MetraBus cable connector is keyed for your protection Check the key ways for correct alignment prior to plugging in the MetraBus cable Remove power from the MetraBus cable before connecting any I O boards 4 If you have only one MEM 32 or if your MEM 32 is the last board in your system install the resistor terminating networks provided with your driver card in the sockets marked RN1 and RN2 These resistor networks minimize signal reflections caused by long cable lengths They are optional however and are not needed for cables of 50 feet or less 3 2 3 2 3 Typical Output Connections The MEM 32 was designed to interface with a variety of devices Figure 3 3 shows several output connection schemes MEM 32 USER CONNECTIONS INPUT 0 CH 0 INPUTI CH 1 INPUT 2 CH 2 INPUT 3 CH 3 INPUT 4 CH 4 TO A D BOARD INVERTING OUTPUTS NON INVERTNG OUTPUTS V V TO CH 0 INPUT CH 0 TO INPUT FIGURE 3 3 Typical MEM 32 Output Connections 3 3 3 3 Programming the MEM 32 The MetraBus is fully supported by Measurement Computing Corp powerful Universal Library UL software driver We highly recommend that you take advantage of the power
11. address 4 4 Using an Auxiliary Power Supply Whether an auxiliary power supply is necessary or not depends upon how the MEM 8 is used how many are used in your application The user will need to determine the total amount of 5VDC current by considering the amount of relays to be used turned on at any time plus the boards quiescent current Calculate the current required from specifications in Section 3 3 As a general rule of thumb an external power supply should be used when a MEM 8 is connected to the bus since the maximum possible current requirement for the MEM 8 exceeds the maximum allowable current supplied by the MDB64 CAUTION As described in the MDB64 user manual the MetraBus 50 pin ribbon cable is only capable of providing 1 Amp of continuous 5VDC current from the PC to the MetraBus I O board s For applications requiring more than 1 Amp of 5VDC current or a combination of 5VDC and 15VDC supplies a high quality external power supply such as the MBUS PWR is required 4 3 NOTE If an external power supply is used with the MDB64 MetraBus controller card place the MDB64 5V POWER jumper in the EXT position 4 4 1 External Power Supply using a 50 pin Ribbon Cable When using the MBUS PWR board or an equivalent external power supply in conjunction with the MetraBus 50 pin ribbon cable you must consider the ribbon cable s power handling capability along with any potential loading issues IR drops ambient temper
12. alternate means of providing power to a distributed load system is shown in Figure 8 7 Again the larger load is placed closest to the MBUS PWR supply While helping to minimize potential I R drops this configuration could also help to minimize system noise by limiting the interaction of power supply currents between the higher power digital I O boards and precision type analog I O boards Low i precision boards power switching boards n I O IO Figure 8 7 Power Distribution Load Re distribution 8 9 Output Ground Jumper MetraBus power systems requirement for a reference having the same potential as earth ground is desirable for both safety and overall system performance To provide maximum flexibility and minimize potential ground loop errors within multiple supply systems the MBUS PWR boards contain an output ground jumper 3 pin header P5 which connects the MBUS PWR chassis ground directly to the DC common of the MBUS PWR output The MBUS PWR chassis ground is always connected to the safety ground of the 120 240V line cord regardless of this jumper setting For most applications the user will likely elect to minimize system noise generated from potential ground loops by floating each of the MBUS PWR connections to the common reference except for one 8 6 8 10 Installation CAUTION Perform the following installation procedure under no power conditions A en QUE Visually inspect the MBUS PWR for lo
13. and or 15 to I O boards 2 3 2 Fuse FI The PC can supply 5 VDC to the MetraBus I O boards via the MDB64 and the MetraBus 50 pin ribbon cable Fuse F1 on the MBD64 limits the current to the I O boards to 1 Amp maximum For MetraBus systems using I O boards requiring more than 1 Amp or those using 15 VDC an additional power supply such as the MBUS PWR is required NOTE If the MetraBus System receives power from the PC install fuse F1 Littlefuse 312001 3AG 1A fast blow in the board and place the 5V POWER jumper in the INT position 1 2 2 3 3 Using an Auxiliary Power Supply As previously described the MDB64 is capable of providing 1 Amp of 5VDC power from the PC to the MetraBus board s via the MetraBus cable For applications requiring more than 1 Amp of 5VDC current or a combination of 5VDC and 15V supplies an external power supply such as the MBUS PWR is required 2 3 2 3 4 External Power Supply using the 50 pin Ribbon Cable If using the MBUS PWR board or equivalent external power supply with the MetraBus 50 pin ribbon cable consider the ribbon cable s power handling capability 1 Amp per line and other potential loading issues such as IR drops and elevated ambient temperature The total power output capability when using an external power supply or MBUS PWR and a 50 pin ribbon cable would be 5 10 Amps max e 15VDC 1 Amp max e 5VDC Amp max NOTE These
14. and two bits of status information R W and BUSY as shown below Address Byte WRITE BASE 1 BIT D7 D6 D5 D4 D3 D2 DI DO BUSY R W A5 A4 A3 Al AO READ BASE 1 BIT D7 D6 D5 D4 D3 D2 DI DO BUSY R W A5 A4 A3 Al AO NOTE The MDB64 controller board inverts the polarity of the bus control signals Normally the BUSY and R W status bits are low non zero In this case the data returned is identical to the contents of the address pointer 2 5 2 4 2 The Data 1 0 Register DATAIO After the address pointer has been set data may be written to read from a MetraBus I O board data transfer takes place through this register Details regarding the specific register functions for each of the MetraBus I O boards are contained in the following sections that deal with the specific I O boards 2 4 3 The Software RESET MRESET A software reset causes all MetraBus I O boards connected to the MetraBus cable to be reset to a known state See the description of the specific I O board for more details The following example illustrates how to use the software RESET feature for all MetraBus I O boards 10 OUT MRESET 00 20 START TIMER 100 IF TIMER START 02 THEN 100 The BASIC Timer command is used to insure a wait of 20 ms for the reset pulse to settle 2 4 4 Notes on the Use of Compiled or Assemble
15. in your application up to three boards may draw power from the MDB64 directly and the auxiliary supply would not be needed CAUTION As described in the MDB64 user manual the MetraBus 50 pin ribbon cable is only capable of providing 1 of continuous 5VDC current from the PC to the MetraBus I O board s For applications requiring more than 1 Amp of 5VDC current or a combination of 5VDC and 15VDC supplies a high quality external power supply such as the MBUS PWR is required NOTE If an external power supply is used in conjunction with the MDB64 MetraBus controller card the MDB64 5V POWER jumper must be placed in the in the EXT position 5 4 5 6 1 External Power Supply using a 50 pin Ribbon Cable When using the MBUS PWR board or an equivalent external power supply in conjunction with the MetraBus 50 pin ribbon cable the user must consider the ribbon cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up would be e 5 10 Amps max e 15 1 e 5 1 NOTE These power levels coincide with the ribbon cable s ten 5VDC 1A max per line power lines along with the single 15VDC power lines 1A max per line 5 6 2 External Power Supply using a MetraBus Power Cable For applications that would exceed the 1 A pin power limitation from either of the 5VD
16. is an auxiliary power supply for the MetraBus industrial data acquisition and control system It combines an IEC320 power input connector along with the power supply s wide input range to provide compatibility for North American 120VAC applications and European 220 240V AC applications The MBUS PWR is 19 rack mountable in a standard NEMA type enclosure that meets applicable IEC LTL CSA and VDE safety requirements The MetraBus power distribution system is modular in order to accommodate the needs of small and large data acquisition systems This feature minimizes the cost of power supply components without limiting the size of the system In configuring the power distribution system first determine the power load on the basis of your intended board complement The three basic power distribution configurations are e PC power e Single auxiliary power supply e Multiple auxiliary power supplies 8 2 Setup A low power MetraBus system with I O boards requiring less than 1 Amp of 5VDC current can use the PC to power the I O boards directly Using this type of configuration the user must first install fuse F1 1A 250V on the MDB64 controller board and also place the SV POWER jumper in the INT position A typical low power 1 Amp ISA MDB64 set up is shown in Figure 8 1 MDB64 5V POWER MetraBus PC CABLE 5V POWER Figure 8 1 Low Power ISA MDB64 Setup In a medium power MetraBus system where the total power requirement
17. of UL to simplify your programming task For details on using the Universal Library please refer to the UL manual and the software examples provided The following is provided for those wishing to program their system based on register level programming Though the MetraBus has a fairly simple architecture register level programming should only be attempted by experienced programmers 3 3 1 MEM 32 Register Map The 32 uses 4 consecutive registers within the MetraBus address space We will refer to these as the Board Address Board Address 1 Board Address 2 and Board Address 3 Each MEM 32 address corresponds to a bank of eight relays These are labeled on the board as Board Address 0 1 2 and 3 To program relays on the MEM 32 simply select the MetraBus address of the bank of relays you would like to set via MDB64 Base Address 1 and write the desired relay control word to the MEM 32 via MDB64 Base Address 0 Each bit in the 8 bit data word controls a separate relay labeled O through 7 corresponding to bits 0 7 The following program assumes the MDB64 board resides at Base Address 768 and the MEM32 board resides at MetraBus Address 4 Though written in BASIC this program can easily be generalized to any other language DATAIO 768 Declare the Data I O location MDB64 Base 0 ADRPTR 769 Declare the Address Pointer location MDB64 Base 1 MEM32 4 Declare the MEM 32 MetraBus Base Address OUT ADRPTR MEM32
18. pin Detachable screw terminal 15A max 300V max 12 22AWG 4 pin Molex 2 in parallel 10A max 250V AC DC 6 6 METRABUS RIBBON CABLE Length Power 5V10A 1A per pin max 15V 15V Propagation Delay ENVIRONMENTAL Operating temperature range Storage temperature range Humidity PHYSICAL Size Cable Type Connector Type 100ft max 1A max 1A max 2ns ft typ 0 to 70 C 20 to 100 C 0 to 90 non condensing 16 x 4 8 inches 40 64 x 12 192 cm HITACHI 23100 series 50 cond flat ribbon 3M 3433 6 7 7 MSSR 24 ISOLATED SOLID STATE SWITCHING BOARD 7 1 Introduction The MSSR 4A is a 24 channel board that provides complete optical isolation for both high and low power switching applications Each MSSR 24 monitors and controls 24 individual I O points via optically isolated solid state plug in modules Figure 7 1 A variety of these modules are available for both input and output applications Voltages of 120 130 VAC 0 to 60 VDC and standard European line voltages can be sensed and controlled Some common uses of the MSSR 24 include computer control of Pump Cycling ON OFF Motor Control Energy Management Signal Multiplexing Alarm Activation Temperature Cycling and Product Life Cycle testing BOARD ADDRESS 0 INPUTS OUTPUTS SSR PLUG IN MODULES OUTPUT LATCH DECODE MetraBus AND CABLE BUS INTERFACE OUTPUT OUTPUT LATCH LATCH BOARD jue SSR PLUG IN SSR PLUG IN MOD
19. power levels are determined by the 50 pin ribbon cable s ten 5VDC 1A max per line limitation along with the single 15V power lines 1A max per line 2 3 5 External Power Supply Using the C POWER X series Power Cable For applications that would exceed the 1 Amp pin power limitation either of the 5VDC and 15V supplies Measurement Computing Corp provides its MetraBus I O boards with on board power connectors P30 and P31 These power connectors can be used with a MetraBus power cable C POWER X in applications requiring power levels beyond the 50 pin ribbon cable capability However still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability when using an external power supply or MBUS PWR and a MetraBus power cable is e 5 10 Amps max e 15 4 Amps max e 5VDC 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power 2 4 Introduction to Register Level Programming for the MDB64 Most users will take advantage of ComputerBoards power Universal Library UL software to handle the bulk of the programming task If your are using UL please refer to the UL manual and example programs to learn how to write your program The following section is provided for those who wish to program at the register level Though the MetraBus is very easy to program this should usually only be att
20. provided for those wishing to program their system based on register level programming Although the MetraBus has a fairly simple architecture it should only be attempted by experienced programmers 7 3 1 MSSR 24 Register Map The MSSR 24 uses three consecutive registers within the MetraBus address space We will refer to these as the Board Address Board Address 1 and Board Address 2 Each MSSR 24 address corresponds to a bank of eight I O modules These are labeled on the board as module 1 through 24 Table 7 1 provides mapping between board address bit number and module number Table 7 1 Board Address and Bit Module Number Mapping Board Data Module Address Bit Number 0 0 1 0 1 2 0 2 3 0 3 4 0 4 5 0 5 6 0 6 7 0 7 8 1 0 9 1 1 10 1 2 11 1 3 12 1 4 13 1 5 14 1 6 15 1 7 16 2 0 17 2 1 18 2 2 19 2 3 20 2 4 21 2 5 22 2 6 23 2 7 24 7 3 To read from or write to modules on the MSSR 24 select the MetraBus address of the bank of modules you want to access via MDB64 Base Address 1 Then either write the desired output control word to the MSSR 24 or read the input data from the data register via MDB64 Base Address 0 Each bit in the 8 bit data word controls or reads a separate module Input and output modules can be mixed on the board Reading the data from an output module returns the current state of the output latch and provides a powerful method of checking data transfer integrity Writing
21. provided for those wishing to program their system based on register level programming Though the MetraBus is a fairly simple architecture register level programming should only be attempted by experienced programmers 4 3 1 8 Register Map The MEM 8 uses one register within the MetraBus address space Each MEM 8 board corresponds to a bank of eight relays These are labeled on the board as CHO through CH7 To program relays on the MEM 8 simply select the MetraBus address of the board you would like to set via MDB64 Base Address 1 and write the desired relay control word to the MEM 8 via MDB64 Base Address 0 Each bit in the 8 bit data word controls a separate relay labeled CHO through CH7 corresponding to bits 0 7 The following program assumes the MDB64 board resides at Base Address 768 and the MEMS board resides at MetraBus Address 4 Although written in BASIC this program can easily be generalized to any other language DATAIO 768 Declare the Data I O location MDB64 Base 0 ADRPTR 769 Declare the Address Pointer location MDB64 Base 1 MEM8 4 Declare the MEM 8 MetraBus Base Address OUT ADRPTR MEM8 Point to the MEM 8 OUT DATAIO 63 Turn on relays 0 5 turn off relays 6 amp 7 63 decimal 0011 1111 binary OUT DATAIO 128 Turn on relay 7 turn off relays 0 through 6 128 decimal 1000 0000 binary note that there is no need to rewrite the address on subsequent writes to the same
22. to an input module performs no function per se but be cautioned that the output latch corresponding to an input module must be set to zero for proper operation This is very important so is stated again NOTE For proper operation of an input module the output latch corresponding to that module location must be set to zero This occurs upon reset so if you have never written to a particular bank of modules you can read them without further action However if you have written to a bank of modules you must either be careful to write only zeros to locations containing input modules or your inputs will always read If in doubt write a zero to your input module locations before performing a read The following program assumes the MDB64 board resides at Base Address 768 and the MSSR 24 board resides at MetraBus Address 4 Though written in BASIC this program can easily be generalized to any other language DATAIO 768 Declare the Data I O location MDB64 Base 0 ADRPTR 769 Declare the Address Pointer location MDB64 Base 1 MSSR24 4 Declare the MSSR 24 MetraBus Base Address OUT ADRPTR MSSR24 Point to module bank 0 modules 1 to 8 of the MSSR 24 OUT DATAIO 63 Turn ON modules 1 6 turn OFF modules 7 amp 8 63 decimal 0011 1111 binary OUT ADRPTR MSSR24 2 Point to module bank 2 modules 17 to 24 of the MSSR 24 OUT DATAIO 128 Turn ON module 24 turn OFF modules 17 through 23 128 decimal 1000 00
23. user to verify data integrity Each relay pair on the MEM 8 also has a visual enunciator LED associated with it permitting easy verification of the relay s state On power up or after a MetraBus software CLEAR all relays return to their INACTIVE off state The 8 is connected to the MetraBus system via a 50 conductor ribbon cable that carries all address and data signals as well as distributing all power Detachable screw terminals on the MEM 8 offer easy connection for field wiring while accepting standard 12 to 22 AWG wire sizes The MEM 8 can be mounted in a wide array of enclosures including 19 in rack mount enclosures NEMA enclosures and DIN rail mounting kits Please consult a Measurement Computing Corp catalog or our web site for the latest MetraBus accessories and products 4 1 4 2 Installation 4 2 1 InstaCal InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards InstaCal will guide you through setting the various switches on the MDB 64 boards as well as your I O board Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus installation please install the MDB series driver board first using the Install Board menu Once the MDB64 board is install
24. 00 binary Assume that modules 9 through 12 are input modules and modules 13 through 16 are output modules Let s also assume we wish to turn ON modules 15 and 16 turn OFF 13 and 14 then read modules 9 through 12 OUT ADRPTR MSSR24 1 Point to module bank modules 9 to 16 of the MSSR 24 OUT DATAIO 192 Turn on module 15 amp 16 turn OFF modules 13 amp 14 192 decimal 1 100 000 0 binary note that we have written Os to bits 0 to 3 This is required to assure proper operation of the input modules in subsequent reads Assume we want to read now and that input modules 9 and 11 are ON and 10 and 12 are OFF INDAT INP DATAIO read the input INDAT would return 197 Binary 1100 0101 Note that the most significant four bits have been read from the output modules which remain at 1 1 0 0 while the least significant four bits represent the state of the input modules 7 4 7 4 Using an Auxiliary Power Supply Whether an auxiliary power supply is necessary or not depends upon how the MSSR 24 is used or how many are used in your application The user will need to determine the total amount of 5VDC current by considering the amount of outputs to be used turned on at any time plus the boards quiescent current Calculate the current required from specifications in Section 7 5 As a general rule of thumb an external power supply should be used when more than two MSSR 24 boards are connected to the bus since the maximum po
25. 4 3 5 MII 32 Register Map sss sinet epp ere Re e ERE creep ri de Tree Re ripeto eger 5 4 5 6 USING AN AUXILIARY POWER SUPPLY csssssscsececeesessececececeesensecesecececsesaaeseeececsesssaeceeececsessasaececeeseseaeeeeeeeees 5 4 5 6 1 External Power Supply using a 50 pin Ribbon 5 5 5 6 2 External Power Supply using a MetraBus Power 5 5 5 7 MII 32 SPECIFICATIONS tenete re EE versed e E eae EE e REIR Pere Pg 5 5 6 MIO 32 ISOLATED DIGITAL OUTPUT BOARD eee ee ee ta setae sete se setas eese etna 6 1 6 1 INTRODUCTION n IEEE ie E AREE epe e ERE EE Ce P Oe NR 6 1 6 2 INSTAEEATION 5 rc eret vede e EHE Eten e GREEN ERAS EUN pee SE Ere eC D EE EE Re ERE RENE E D LEER 6 2 0 21 InstaCal o e et E 6 2 6 2 2 Setting the MIO 32 Board Address o Rte oe eei ee Reed ets 6 2 6 3 TYPICAL OUTPUT CONNECTIONS cccccccccssssssscecececsessnsececececeessseaececececsesnaececececsesaaececeescsesaaeaeceesesensnaeaeeeeeees 6 3 6 4 PROGRAMMING THE MIO 32 s sccccccossessesnccsccscesssonsesscesceesenseeuecescesesnscauecseesseenseeuecsecsceensnnuecseescesnsencesecesceeees 6 4 645L cMIO 32 Resister Map S ice tsi terio bestes ege 6 4 6 5 USING AN AUXILIARY POWER SUPPLY csssssssscceceesessscecececeeseeaecececccsesaaeceeececsensaeceeececeeseaa
26. A 1A per pin max 1A max 1A max 2ns ft typical 0 to 70 C 20 to 100 C 0 to 90 non condensing 16 x 4 8 inches 40 64 x 12 192 cm HITACHI 23100 series 50 cond flat ribbon 3M 3433 4 6 5 MII 32 ISOLATED DIGITAL INPUT BOARD 5 1 Introduction The MII 32 is a 32 channel isolated digital input board whose channels are DTL TTL buffered CMOS and zero to 5VDC compatible Figure 5 1 Provisions are included for monitoring higher input voltages using customer modifiable resistors Using this board the MetraBus system can read up to 512 digital input channels from a single computer expansion slot Some common uses of the MII 32 include computer monitoring of relay contact status limit switch status automated data collection from BCD instrumentation computerized test benches etc 8 OPTO ISOLATORS 8 OPTO ISOLATORS BOARD BOARD ADDRESS 3 ADDRESS 2 LATCH LATCH DECODE METRABUS AND BUS CABLE INTERFACE LOGIC BOARD ADDRESS 0 LATCH BOARD ADDRESS 1 LATCH BOARD ADDRESS SWITCH 8 OPTO 8 OPTO ISOLATORS ISOLATORS Figure 5 1 MII 32 Digital Input Board Block Diagram The MII 32 connects directly to any of the MetraBus MDB64 controller cards via the 50 conductor MetraBus ribbon cable The cable carries all data address and status information as well as power distribution A total of 20 ground lines are interleaved among the data and address lines to ensure noise immunity The MetraBus system was d
27. Base 0 ADRPTR 769 Declare the Address Pointer location MDB64 Base 1 MIO32 4 Declare the MIO 32 MetraBus Base Address OUT ADRPTR MIO32 Point to output bank 0 of the MIO 32 OUT DATAIO 63 Turn on outputs 0 5 turn off outputs 6 amp 7 63 decimal 0011 1111 binary OUT ADRPTR MIO22 3 Point to output bank 3 of the MIO 32 OUT DATAIO 128 Turn on output 7 turn off output 0 through 6 128 decimal 1000 000 0 binary 6 5 Using an Auxiliary Power Supply Whether an auxiliary power supply is necessary or not depends upon how the MIO 32 is used or how many are used in your application The user will need to determine the total amount of 5VDC current by considering the amount of outputs to be used turned on at any time plus the boards quiescent current Calculate the current required from specifications in Section 6 6 As a general rule of thumb an external power supply should be used when more than one MIO 32 is connected to the bus since the maximum possible current requirement for two MIO 32 boards exceeds the maximum allowable current supplied by the MDB64 6 4 CAUTION As described in the MDB64 user manual the MetraBus 50 pin ribbon cable is only capable of providing 1 Amp of continuous 5VDC current from the PC to the MetraBus I O board s For applications requiring more than 1 Amp of 5VDC current or a combination of 5VDC and 15VDC supplies a high quality external power supply such as the MBUS PWR is r
28. Between coil and contacts Operate Time Release Time Vibration Shock Insulation Resistance Life Expectancy Miscellaneous 8 DPDT 8 pairs of SPDT relays 2 form C SPDT per channel TA 30VDC 10A 125V AC 70 milliohms typ TSOVAC 50 60HZ 1 min 1500VAC 50 60HZ 1 min 10 milliseconds max 5 milliseconds max 10 to 55 Hz Dual amplitude 1 5mm 10G 11 milliseconds 100M ohms min 500V 1 minute 10 7 mechanical operations min at rated load Enunciator LED s provided for channel selection indication 4 5 METRABUS INTERFACE Device type Address space requirement Miscellaneous CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Screw Terminal Connector type Current Rating Voltage Rating Wire sizes External Power Connector type Current Rating Voltage Rating METRABUS RIBBON CABLE Length Power 5V 15V 15V Propagation Delay ENVIRONMENTAL Operating temperature range Storage temperature range Humidity PHYSICAL Size MetraBus Cable type Connector Type 74LS540 1 address location within the 64 available address locations Locations provided for installation of termination resistors for MetraBus cable Data read back capability for data and address confirmation 50 pin header male gt 1000Vrms 1A max per pin Detachable screw terminal 8 per block 15A max 300V max 12 22AWG 4 pin Molex 2 in parallel 10A max 250V AC DC max 100ft max 10
29. C and 15VDC supplies Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These power connectors are designed to be used with a MetraBus Power Cable C POWER X in applications requiring power levels beyond what the 50 pin ribbon cable is capable of handling The user must still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up would be as follows e 5 10 Amps max e 15VDC 4 Amps max e 15VDC 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power capability 5 7 MII 32 Specifications POWER CONSUMPTION 45V 220mA typ 300mA max DIGITAL INPUT Digital Type banks 1 4 ILQ2X009 Quad Optocoupler Configuration 4 banks of 8 digital inputs Number of input channels Input High Threshold Voltage Input Low Threshold Voltage Input High Threshold Current Input Low Threshold Current Input Voltage Reverse Voltage Forward Current Forward Voltage Surge Current Isolation Resistance Isolation Voltage 32 2 2VDC min 1 3VDC max 3 2mA min 0 25mA max 11VDC max with standard 220ohm resistors 6V max 60mA max 1 25V typ 2 5A max 1012 ohms Vio 500V 25 SOOVDC typ 5 5 METRABUS INTERFACE Address space requirements Output Device type Miscellaneous
30. Controlled by a variety of host computers the MetraBus system allows creation of large scale analog and digital I O systems MetraBus systems offer an ideal I O solution for applications that are too large for a standard plug in board system You can develop MetraBus systems to monitor and control thousands of individual I O points 1 4 The MetraBus Concept The MetraBus concept is simple A MetraBus driver board is installed in the host computer A 50 conductor MetraBus cable then connects the driver board to one or more I O boards The cable can be up to 100 feet long allowing the host computer and driver board to reside in a controlled environment The I O boards can be located remotely near the actual equipment or devices that are being monitored and or controlled 1 3 The MetraBus I O Map and Cable The MetraBus system uses a 50 conductor cable as illustrated in Figure 1 1 The cable provides all communications between MetraBus I O boards and the host computer and in smaller systems is used for power distribution among the I O boards The MetraBus cable consists of six address lines 4 control status lines 8 data lines and 32 power and ground lines DO 1 2 GND DI 3 4 GND D2 5 6 GND DATA D3 7 8 GND BUS D4 9 10 GND D5 11 12 GND D6 13 14 GND D7 15 16 GND CLEAR 17 18 GND CONTROL WSTRB 19 20 GND L RW 21 22 GND 23 24 GND Al 25 26 GND ADDRESS 2 27 28 GND BUS A3 29 30 GND 4 31 32 GND AS 33 34 GND BUSY 35 36 GND 15 37 38 GN
31. D 15V 39 40 GND 5VDC 41 42 5VDC POWER 5VDC 43 44 5VDC 5VDC 45 46 5VDC POWER 5VDC 47 48 5VDC 5VDC 49 50 5VDC mE Figure 1 1 MetraBus 50 pin Conductor Map 1 1 The six address lines of the MetraBus provide 2 or 64 individual addresses on the MetraBus The MetraBus data bus is eight bits wide so each MetraBus address can control eight digital I O points One bit A D or D A point One half of a 12 bit A D or D A One 8 bit counter timer 1 3 Programming Most users will take advantage of ComputerBoards power Universal Library UL software to handle the bulk of the programming task If your are using UL please refer to the UL manual and example programs to learn how to write your program The following section is provided for those who wish to program at the register level Though the MetraBus is very easy to program this should usually only be attempted by experienced programmers MetraBus is programmable from any PC usable language having INPUT and OUTPUT commands capable of manipulating the I O bus Following is a brief example showing how this would be done in BASIC The following discussion will use the variables DATAIO ADRPTR and MRESET in order to help clarify MetraBus programming technique These variables generally set at the beginning of your programs for ease of manipulation are as follows DATAIO 768 Declare MetraBus data I O path ADRPTR 769 Declare address pointer location MRESET 770
32. DE LATCH LATCH METRABUS AND BUS CABLE INTERFACE LOGIC BOARD ADDRESS SWITCH BOARD ADDRESS 0 LATCH 8 OPTO ISOLATORS BOARD ADDRESS 1 LATCH 8 OPTO ISOLATORS Figure 6 1 MIO 32 Block Diagram The MIO 32 connects directly to any of the MetraBus controller cards via a 50 conductor ribbon cable The MetraBus cable connects the MIO 32 to the MDB64 controller card and carries all data address status information and power The MetraBus system allows control of up to 512 digital output channels from a single computer expansion slot Twenty ground lines are interleaved among the data and address lines to improve noise immunity MetraBus cable lengths of up to 100 feet allowing the MIO 32 to be positioned adjacent to its point of use for easy signal connection output opto isolators are set to zero off state at power up or software CLEAR Detachable screw terminals on the MIO 32 offer easy connection for field wiring accepting standard 12 22 AWG wire The MIO 32 can be mounted in a variety of enclosures including 19 rack mount enclosures NEMA enclosures and DIN Rail mounting kits Users should consult a current Measurement Computing Corp catalog or web site for the latest MetraBus accessories and product offerings 6 1 6 2 Installation 6 2 1 InstaCal InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards InstaCal will guide you throug
33. MetraBus User s Manual MEASUREMENT COMPUTING Revision 2 October 2000 LIFETIME WARRANTY Every hardware product manufactured by Measurement Computing Corp is warranted against defects in materials or workmanship for the life of the product to the original purchaser Any products found to be defective will be repaired or replaced promptly LIFETIME HARSH ENVIRONMENT WARRANTY Any Measurement Computing Corp product which is damaged due to misuse may be replaced for only 5096 of the current price I O boards face some harsh environments some harsher than the boards are designed to withstand When that happens just return the board with an order for its replacement at only 50 of the list price Measurement Computing Corp does not need to profit from your misfortune By the way we will honor this warranty for any other manufacture s board that we have a replacement for 30 DAY MONEY BACK GUARANTEE Any Measurement Computing Corp product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it Please call for RMA number first No credits or returns accepted without a copy of the original invoice Some software products are subject to a repackaging fee These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness f
34. RABUS Dll TIMING CABLE PC BUS AND DRIVERS METRABUS ADDRESS CONTROL AND CABLE LOGIC RECEIVERS DECODE ADDRESS SWITCH Figure 2 1 MDB64 Driver Board Functional Block Diagram The MDB64 series boards may be installed in any compatible PC expansion slot A 50 pin connector extends through the rear of the computer and connects to the MetraBus 50 pin ribbon cable The MetraBus uses parallel bus architecture with the MetraBus cable carrying all data address and control signals It also distributes power to the MetraBus I O boards Signal lines alternate with ground conductors in the 50 pin cable to reduce system noise MetraBus cable lengths can be up to 100 feet from the host computer The MetraBus industrial data acquisition and control interface yields higher speed greater accuracy and total automatic operation for your applications 2 2 MDB64 Installation 2 2 1 Installation using the InstaCal Software Utility InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards InstaCal will lead you through the complete setup of your system and will also allow you to test your installation Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus installation please install
35. RELAY BOARD eeeeee eese 3 1 SdTLINTRODUCGTION nti Petra tee PERRA Drei n e tet Rar Oe P Rte ens 3 1 3 2 INSTALLATION Seen toe Dn IO RETO RAO INIRE TIR IR ETE e DP ROTE RENT 3 2 3 231 HERRERA OV Er ei EEE HIR 3 2 3 2 2 Setting the MEM 32 Board Address sess nnne nennen rennen enne 3 2 3 2 3 Typical Output Connections EKER o EAE Ero nennen trente ener en rennen etre enne 3 3 3 3 PROGRAMMING THE MEM 32 e PETER Eee en eR X EXPE REV eH rein PR ERE RC Peel S 3 4 3 3 1 IMEM 32 Register Map isses eee heuer REOR a nena ata tee 3 4 3 4 USING AN AUXILIARY POWER SUPPLY oiiire eret 3 4 3 4 1 External Power Supply using a 50 pin Ribbon Cable seen 3 5 3 4 2 External Power Supply using a C Power X series MetraBus Power 3 5 3 9 MEME 32 SPECIEICATIONS ERU UU STIRPE IAEE TAERE RENE E IRE RUNE RES 3 5 4 MEM 8 ELECTROMECHANICAL RELAY BOARD 4 eese eese ee teeth statuae ta tns tn seta sun 4 1 4 INTRODUCTION ien retur gestern genero nlii re bte 4 1 4 2 INSTALLATION hoera e tor EET DR A i iE RR d e e a e Ree o Ie 4 2 LIMEN TS IEEE 4 2 4 22 Setting the MEM 8 Board Address nennen enne nenne n
36. ULES MODULES BOARD ADDRESS 1 BOARD ADDRESS 2 INPUTS OUTPUTS INPUTS OUTPUTS Figure 7 1 MSSR 24 Functional Block Diagram The MSSR 24 uses three consecutive addresses on the MetraBus This allows access to a maximum of 16 MSSR 24 boards by a single MetraBus driver board providing control of up to 384 individual I O points The MSSR 24 board has three 8 bit ports Writing to one of the ports loads data into the output latches and to the I O modules themselves Reading data from an output module returns the data currently in the output latch without changing it This feature allows the user to verify that the data on the outputs has been received correctly Reading from an input module returns the value of the input AII MSSR 24 modules are set to the OFF state at power up or software CLEAR Detachable screw terminals on the MSSR 24 outputs offer easy connection for field wiring accepting standard 12 22 AWG wire sizes 7 1 7 2 Installation 7 21 InstaCal InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards nstaCal will guide you through setting the various switches on the MDB 64 boards as well as your I O board Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus in
37. VDC supplies Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These power connectors are used with a MetraBus Power Cable C POWER X in applications requiring power levels beyond what the 50 pin ribbon cable is capable of handling The user must still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up is e 5 10 Amps e 15VDC 4 Amps max e 5VDC 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power capability 7 5 7 5 MSSR 24 Specifications POWER CONSUMPTION 5 all modules in off state 5 all modules in on state DIGITAL INPUT OUTPUT Number of channels Address space requirement Miscellaneous METRABUS INTERFACE Address space requirement Output Device type Input Device type Miscellaneous MODULE INTERFACE Device type 250mA typical 300mA max 375mA typical 425mA max 24 3 banks of 8 individual modules 3 consecutive address locations within the 64 available address locations configurable at even boundaries of 4 Locations provided for installation of termination resistors for MetraBus cable Enunciator LED s provided for channel selection indication Data read back capability for data and address confirmation Individual input and output ty
38. a read or a write operation After the address pointer is set to the proper address data can be written to or read from that board The examples shown are based on BASIC s INP and OUT I O bus commands which read from and write to the I O bus respectively Note that although the examples here are in BASIC other languages supporting data I O operations can be used Refer to the manual for the language that you are using for the correct syntax The following example illustrates how to set the address pointer to a MetraBus I O board MEM 8 at address 12 ADRPTR 769 Declare address pointer location DATAIO 768 Declare data I O location MRESET 770 Declare MetraBus RESET location MEMS 12 Declare MEM 8 board address OUT ADRPTR amp Point to MEM 8 at address 12 After the MetraBus address pointer is set it does not change until another OUT command changes it Setting the address pointer is a fast operation on the personal computer bus taking less than 10 us Since the address pointer points to a MetraBus I O board address and since it is latched on the MDB64 it can be read back using the an I O input command as follows ADDRESS z INP ADRPTR The BASIC variable ADDRESS contains the current MetraBus I O address If the above INP command were issued immediately after the previous OUT command given above the ADDRESS variable would contain a value of 12 Reading the address pointer returns six bits of address information
39. ature etc The total power output capability for this type of set up is e 5 10 e 15 1 e I5VDC 1 Amp max NOTE These power levels coincide with the ribbon cable s ten 5VDC 1A max per line power lines and the single 15VDC power lines 1A max per line 4 4 2 External Power Supply using a MetraBus Power Cable For applications that would exceed the 1A pin power limitation from either of the 5VDC and 15VDC supplies Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These power connectors are used with a MetraBus Power Cable C POWER X in applications requiring power levels beyond what the 50 pin ribbon cable is capable of handling The user must still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up is e 5 10 Amps e 15VDC 4 Amps max e 5 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power capability 4 5 8 Specifications POWER CONSUMPTION 5 all relays off 5V all relays on 125mA typical 150mA max 1 1A typical 1 3A max RELAY SPECIFICATIONS Number of output channels Contact Configuration Contact Rating resistive load Contact Resistance Isolation Between open contacts
40. d Languages Execution speeds with compiled and assembled languages may call for precautions MetraBus response times may be as long as 10 uS After any I O read or write we recommend you check the status bits R W and Busy prior to attempting any subsequent read or write to assure the bus has fully settled 2 5 MDB64 Specifications POWER CONSUMPTION 5 no power supplied to MetraBus devices 200mA typical 300mA max 5 maximum power supplied to MetraBus devices 1 2A typical 1 3A max METRABUS INTERFACE Number of data bits 8 I O type Number of address bits 6 I O type capable of addressing up to 64 devices Digital Input Output 74LS540 Output High 2 4 volts min 15mA Output Low 0 5 volts max 24mA Input High 2 0 volts min Input Low 0 6 volts max Data Transfer Rate 80kbytes sec max Control Timing R W bar 6 4us 250ns typical WSTRB bar 3 2us 250ns typical CLEAR bar 3 2us 250ns typical Connector Type 50 pin header male Dielectric Strength 1000Vrms Current Rating 1A max per pin PERIPHERAL POWER FOR METRABUS ACCESSORY BOARDS Voltage 5VDC Current 1A max P3 set to INT mode Protection 1 Amp 3AG fast blow fuse INT mode Miscellaneous Locations provided for installation of EMI bypass capacitors Read back capability for data and address confirmation 2 6 METRABUS RIBBON CABLE Length Power 5V 15V 15V Propagation Delay ENVIRONMENTAL Operating temperature range Storage te
41. e MIO 32 provides access to emitters and collectors of the optical coupler s outputs This allows maximum flexibility when connecting the MIO 32 to your application Figures 6 3a and 6 3b show typical wiring schemes USER CIRCUITRY STANDARD 5VDC CONNECTION MIO 32 LOGIC LEVEL INPUT USER COMMON OPTO COUPLER Figure 6 3a Collector Output Connections ALTERNATE j USER CONNECTION CIRCUITRY FOR CMOS OR NMOS MIO 32 45VDC LOGIC LEVEL INPUT OPTO COUPLER USER COMMON Figure 6 3b Emitter Output Connections A user supplied voltage source normally 5 VDC to 20 VDC must be used with both standard and alternative connection schemes The output from the MIO 32 is then wired to the user s logic level input 6 3 Note that when using the standard collector output connection scheme Fig 6 3a a logical OFF command causes the opto coupler nof to conduct With no low resistance ground path through the opto coupler there will be current flow through the user s input circuitry from this high output This inversion of logic level is easily compensated for by software Issuing a MetraBus system RESET command with the standard connection configuration causes all outputs to go HIGH The alternate method shown in Figure 6 3b does not invert the data but offers less drive current because of the 2 0kQ ground path It is not recommended for use with TTL inputs 6 4 Programming the MIO 32 The MetraBus is fu
42. eceseesesenenssaeseesees 6 4 6 5 1 External Power Supply using a 50 pin Ribbon Cable sse 6 5 6 5 2 External Power Supply using a C Power X series MetraBus Power 6 5 6 6 MIOs32 SPEGIEICATIONS estesa etenen reiten c Oe RENTE 6 6 7 MSSR 24 ISOLATED SOLID STATE SWITCHING I O BOARD 4 ecce esee 7 1 FEV INTRODUGTION edite qi bo M 7 1 TZ INSTATEAXTION ret ice eene ti eai Me 7 2 TZL Trista Gal cess ecobites 7 2 7 2 20 Setting the MSSR 24 Board Address 7 2 T 3 PROGRAMMING THE MSS R24 i sie ie ee ere ttt coke cacbuceduods Yea use rece o Eae EUREN CR aep 7 3 7 31 MSSR 24 Register Map eerte rua cete ne teer decebat eerte deed 7 3 7 4 USING AN AUXILIARY POWER SUPPLY scsaessudea tere b eves eee 7 5 7 4 1 External Power Supply using a 50 pin Ribbon Cable seen 7 5 7 4 20 External Power Supply using a C Power X series MetraBus Power 7 5 7 5 MSSR 24 SPECIFICATIONS erret eee or ettet ri ec B vete ETE ten ges i v 7 6 8 MBUS PWR POWER SUPPLY BOARD ceres ee ee eee teen sette seen sesto seta sese sese ense eaae eese setas eese seas e 8 1
43. ed in nstaCal MetraBus I O boards may be installed by going to the Install Board menu and selecting the Add MetraBus Board menu item 4 2 2 Setting the MEM 8 Board Address The following section is provided for those who choose not to follow the guidance of the InstaCal utility software that you have received The I O address for each MEM 8 connected to a single MetraBus cable must be unique and non overlapping for the driver card to target that specific MEM 8 These addresses allow the boards in a MetraBus system to operate independently Each MEM 8 uses one of the available 64 MetraBus addresses Figure 4 2 below shows a typical board address switch setting of 16 decimal 32 16 8 4 2 1 1 2 3 4 5 6 Figure 4 2 Board Address Switch Set the board address using the following procedure 1 The board address DIP switch is on the far left side of the board just above and to the left of the MetraBus connector The numbers printed above the DIP switches indicate the values of the corresponding individual switches The switches add a value in the ON position 2 Select an unused board address and set the DIP switches accordingly For example in order to set a board address of 24 switches with corresponding values of 8 and 16 would be ON while the others remain OFF Remember that each MEM 8 uses four consecutive addresses of the 64 addresses that are available and must be set to an unused non overlapping address in order to a
44. empted by experienced programmers As previously mentioned the PC has I O address locations for various peripherals The board s Base Address is located within this I O space The three default MDB64 addresses and their functions are as follows Table 2 2 Board I O Map LOCATION T O ADDRESS I O ADDRESS FUNCTION Hex Decimal Base Address 0 300 768 Data I O path DATAIO Base Address 1 301 769 Address pointer ADRPTR Base Address 2 302 770 Software Reset MRESET For the sake of clarity all references to specific address locations use the variable names DATAIO ADRPTR and MRESET as specified in Table 2 2 Normally variable assignments are made at the start of your program as in the following example 10 DATAIO 768 Declares data I O location 20 ADRPTR 769 Declares address pointer location 30 MRESET 770 Declares software RESET location The following sections describe address location functions in order of usual programming use All references to the above locations assume an MDB64 base address of 768 decimal 300 hex 2 4 2 4 1 Address Pointer An address pointer selects or points to the specific register on a the MetraBus I O board to be accessed Each MetraBus I O Board has a unique non overlapping board address to identify it Writing the board address to ADRPTR sets the current MetraBus address and targets a specific register on a particular I O board for
45. ennen trennen nee 4 2 4 3 PROGRAMMING THE MEMPES rt tr re Rer ruido i E aee R DE 4 3 4 3 1 MEM 8 Register iet hei i og oop E SEHR tre te Re TOE ege d 4 3 4 4 USING AN AUXILIARY POWER SUPPLY mete erp rr eroe Pei 4 3 4 4 1 External Power Supply using a 50 pin Ribbon Cable sss eene 4 5 4 4 2 External Power Supply using a MetraBus Power Cable seen 4 5 4 5 MEM 8 SPECIFICATIONS EEEE ire rr pr PP D ie iuri 4 5 5 MII 32 ISOLATED DIGITAL INPUT BOARD eeeeeee eene teens ensis tn sets suse ta sens sens enses 5 1 Dell INTRODUCTION o erect eet eere e liste dete gene evt 5 1 iii ISI RERO E DI D m EE 5 2 SN MESI KU Scl Ln 5 2 5 2 2 Setting the MII 32 Board Address eie eee tette reg etre trie 5 2 5 3 CONFIGURING THE MII 32 FOR NON STANDARD INPUTS cccssssccececeesesssceceeececsesseaeeeeececsesssaesecececsensaeeeeeeeees 5 3 5 4 TYPICAL INPUT CONNECTIONS sccsccccccecsessnsececececsessaececececeensseaecececeesessaaeceeeceesesaaececececsessaaeeeceeeesensaaeeeeeeeees 5 3 5 5 PROGRAMMING THE MII 32 ccccccccccccecsessscececececsesseaeceeccecseaaececececeesesaececececsessaaeceeececeeseaaeseeececeesenaaeeeeeeeeees 5
46. equired NOTE If an external power supply is used in conjunction with the MDB64 MetraBus controller card the MDB64 5V POWER jumper must be placed in the in the EXT position 6 5 1 External Power Supply using a 50 pin Ribbon Cable When using the MBUS PWR board or an equivalent external power supply in conjunction with the MetraBus 50 pin ribbon cable the user must consider the ribbon cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up would be e 5 10 Amps max e 15 1 e 5VDC 1 NOTE These power levels coincide with the ribbon cable s ten 5 1A max per line power lines along with the single 15VDC power lines 1A max per line 6 5 2 External Power Supply using a C Power X series MetraBus Power Cable For applications that would exceed the 1 A pin power limitation from either of the 5VDC and 15VDC supplies Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These power connectors are designed to be used with a MetraBus Power Cable C POWER X in applications requiring power levels beyond what the 50 pin ribbon cable is capable of handling The user must still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc T
47. es add a value in the ON position 2 Select an unused board address and set the DIP switches accordingly For example in order to set a board address of 24 switches with corresponding values of 8 and 16 are ON The others remain OFF Remember that each MSSR 24 uses four consecutive addresses of the 64 addresses that are available and must be set to an unused non overlapping address in order to avoid bus conflicts 3 After setting the board address connect the MSSR 24 to the MDB64 controller card via the MetraBus cable The MetraBus cable connector is keyed for your protection Check the key ways for correct alignment prior to plugging in the MetraBus cable Remove power from the MetraBus cable before connecting any I O boards 4 If you have only one MSSR 24 or if your MSSR 24 is the last board in your system install the resistor terminating networks provided with your driver card in the sockets marked RN1 and RN2 These resistor 7 2 networks minimize signal reflections caused by long cable lengths They are optional however and are not needed for cables of 50 feet or less 7 3 Programming the MSSR 24 The MetraBus is fully supported by Measurement Computing Corp powerful Universal Library UL software driver We highly recommend that you take advantage of the power of UL to simplify your programming task For details on using the Universal Library please refer to the UL manual and the software examples provided The following is
48. esigned to provide MetraBus cable lengths of up to 100 feet allowing the MII 32 to be positioned for easy signal connection The MII 32 is connected to the MetraBus system via a 50 conductor ribbon cable that carries all address and data signals as well as distributing all power All read back registers are reset to zero at power up or a software CLEAR Detachable screw terminals on the MII 32 offer easy connection for field wiring while accepting standard 12 to 22 AWG wire sizes The MII 32 can be mounted in a wide array of Measurement Computing Corp enclosures including 19 rack mount enclosures NEMA enclosures and DIN Rail mounting kits Users should consult a current Measurement Computing Corp catalog or web site for the latest MetraBus accessories and product offerings 5 1 5 2 Installation 5 2 InstaCal InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards InstaCal will guide you through setting the various switches on the MDB 64 boards as well as your I O board Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus installation please install the MDB series driver board first using the Install Board menu Once the MDB64 board is installed in nstaCal MetraBu
49. h setting the various switches on the MDB 64 boards as well as your I O board Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus installation please install the MDB series driver board first using the Install Board menu Once the MDB64 board is installed in nstaCal MetraBus I O boards may be installed by going to the Install Board menu and selecting the MetraBus Board menu item 6 2 2 Setting the MIO 32 Board Address The following section is provided for those who chose not to follow the guidance of the nstaCal utility software that you have received The I O address for each MIO 32 connected to a single MetraBus cable must be unique and non overlapping for the driver card to target that specific MIO 32 These addresses allow the boards in a MetraBus system to operate independently Each MIO 32 uses four of the available 64 MetraBus addresses These four addresses run consecutively starting from the MIO 32 board address Setting the board address is outlined below with Figure 6 2 describing a typical board address switch setting of 32 decimal 32 16 8 4 4 Figure 6 2 Board Address Switch Set the board address using the following procedure 1 The board address DIP switch is on the far left side of the boa
50. he total power output capability for this type of set up would be as follows e 5 10 Amps max e 15 4 Amps e 5VDC 1 Amp max NOTE These power levels coincide with the MBUS PWR s maximum output power capability 6 5 6 6 MIO 32 Specifications POWER CONSUMPTION 5 all 4 banks at all zero s 5 all 4 banks at all one s DIGITAL OUTPUT Output Device Type Configuration Number of output channels Collector Current On Collector Current Off Collector Emitter Reverse Voltage Collector Emitter Saturation Voltage Isolation resistance Isolation Voltage METRABUS INTERFACE Address space requirement Input Device Type Output Device Type Miscellaneous CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Digital Output Connector type Current Rating Voltage Rating Wire sizes External Power Connector type Current Rating Voltage Rating 290mA typical 350mA max 630mA typical 700mA max ILQ2X009 Quad Optocoupler 4 banks of 8 open collector digital outputs 32 50mA max 1 uA maximum 70V max 0 25V typ 0 4V max Ice 1 mA Ib 20 10 12 ohms Vio 500V Ta 25 500VDC continuous 4 consecutive address locations within the 64 available address locations 74LS540 7ALS541 Locations provided for installation of termination resistors Data read back capability for data and address confirmation 50 pin header male gt 1000Vrms 1A max per
51. ions within the 64 available address locations Locations provided for installation of termination resistors Data read back capability for data and address confirmation 50 pin header male gt 1000Vrms 1A max per pin Detachable screw terminal 8 per block 15A max 300V max 12 22AWG 4 pin Molex 2 in parallel 10A max 250V AC DC max 100ft max 10A 1A per pin max 1A max 1A max 2ns ft typical 0 to 70 C 20 to 100 C 0 to 90 non condensing 16 x 4 74 inches 40 63 x 12 06 cm HITACHI 23100 series 50 cond flat ribbon 3M 3433 3 6 4 MEM 8 ELECTROMECHANICAL RELAY BOARD 4 1 Introduction The 8 is an 8 channel double pole double throw electromechanical relay board used with the MetraBus industrial data acquisition and control system The MEM 8 uses eight pairs of SPDT electromechanical relays operating in parallel to provide a total of eight DPDT channels Typical MEM 8 applications include pump control motor control energy management signal multiplexing alarm activation temperature cycling etc DECODE AND BUS RELAY METRABUS INTERFACE DRIVERS CABLE LOGIC Relay K15 K16 BOARD ADDRESS SWITCH Figure 4 1 MEM 8 Block Diagram The MEM 8 board uses a single address on the MetraBus This allows control of up to 64 MEM 8 boards 512 relay pairs per computer expansion slot The MEM 8 like other MetraBus output boards has a data read back feature allowing the
52. is less than 100 Watts the use of an auxiliary power supply such as the MBUS PWR is required The MBUS PWR board would be used in applications requiring greater than 1 Amp of 5V current or for applications requiring 15VDC supplies If an external power supply such as the MBUS PWR is used the MDB64 SV POWER jumper P3 must be placed in the EXT position see Figure 8 2 and Table 8 1 This isolates the computer s 5 VDC power supply from the external power supply CAUTION Failure to place the 5V POWER jumper in the EXT position when using an external power supply such as the MBUS PWR can cause fuse F1 to blow and could damage the MetraBus system and host computer 8 1 If total power consumption is expected to be greater than 100 Watts multiple MBUS PWR supplies are required Connections for multiple MBUS PWR boards will use the EXPANSION connectors P2 and P4 and POWER connectors P1 and P3 MDB64 MBUS PWR 5V POWER 4 5VDC 15VDC MetraBus PC CABLE 5V POWER Figure 8 2 Medium High Power ISA MDB64 Setup 5V POWER JUMPER FUNCTION JUMPER POSITION LABEL MDB64 uses the computer to supply 5V to the 1 2 INT MetraBus I O boards An external power supply or MBUS PWR is used 2 3 EXT to supply 5V and or 15V to I O boards Table 8 1 MDB64 5V POWER Jumper 8 3 External Power Supply using the 50 pin Ribbon Cable When using the MBUS PWR board or equivalent externa
53. l power supply with the MetraBus 50 pin ribbon cable consider 1 The ribbon cable s power handling capability 1 Amp per line 2 Any potential loading issues IR drops ambient temperature The total power output capability when using an external power supply or MBUS PWR and the 50 pin ribbon cable is e 5 10 e 15 1 e 5VDC 1 NOTE These power levels coincide with the 50 ribbon cable s ten 5V 1A per line power lines along with the single 15V power lines 1A max per line 8 4 External Power Supply using the MetraBus Power Cable C POWER X For applications that require power beyond what the 50 pin ribbon cable can provide Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These connectors are used with Measurement Computing Corp MetraBus power cable C POWER X in high power applications or applications that cannot tolerate the I R drops associated with long ribbon cables or the effects of elevated ambient temperatures 8 2 When using the Measurement Computing Corp MetraBus Power Cable C POWER X the user must consider its power handling capability and any potential loading issues I R drops ambient temperature etc The total power output capability when using an external power supply or MBUS PWR and a MetraBus Power Cable is e 5 10 Amps max e
54. lly supported by Measurement Computing Corp powerful Universal Library UL software driver We highly recommend that you take advantage of the power of UL to simplify your programming task For details on utilizing the Universal Library please refer to the UL manual as well as the many software examples provided The following is provided for those wishing to program their system based on register level programming Though the MetraBus is a fairly simple architecture this should only be attempted by experienced programmers 6 4 1 MIO 32 Register Map The MIO 32 uses 4 consecutive registers within the MetraBus address space We will refer to these as the Board Address Board Address 1 Board Address 2 and Board Address 3 Each MIO 32 address corresponds to a bank of 8 outputs These are labeled on the board as Board Address 0 1 2 and 3 To set outputs on the MIO 32 simply select the MetraBus address of the bank of outputs you would like to set via MDB64 Base Address 1 and write the desired output control word to the MIO 32 via MDB64 Base Address 0 Each bit in the 8 bit data word controls a separate output labeled EO CO through E7 C7 corresponding to bits 0 7 The following program assumes the MDB64 board resides at Base Address 768 and the MIO 32 board resides at MetraBus Address 4 Though written in BASIC this program can easily be generalized to any other language DATAIO 768 Declare the Data I O location MDB64
55. mperature range Humidity 5V power jumper P3 provided to allow the use of an internal PC or external MBUS PWR 5VDC power source Hardware and software reset sets address pointer to 0 and resets all devices on the MetraBus 100ft max 10A 1A per pin max 1A max 1A max 2ns ft typical 0 to 70 C 20 to 100 C 0 to 90 non condensing 2 7 3 32 ELECTROMECHANICAL RELAY BOARD 3 1 Introduction MEM 32 is a 32 channel SPST relay board for the MetraBus data acquisition and control system The MEM 32 provides 32 electromechanical relays for computer controlled applications such as pump cycling motor control energy management signal multiplexing alarm activation temperature cycling etc BOARD ADDRESS 3 BOARD ADDRESS 2 OUTPUTS OUTPUTS EIGHT EIGHT RELAYS RELAYS OUTPUT OUTPUT DECODE LATCH LATCH AND METRABUS BUS CABLE INTERFACE OUTPUT OUTPUT LATCH LATCH BOARD ADDRESS EIGHT EIGHT SWITCH RELAYS RELAYS BOARD ADDRESS 0 BOARD ADDRESS 1 OUTPUTS OUTPUTS Figure 3 1 MEM 32 Functional Block Diagram The MEM 32 boards use four consecutive addresses on the MetraBus This allows control of up to 16 MEM 32 boards by a single MetraBus driver board providing control to 512 independent relays The MEM 32 board is divided into four 8 bit ports Writing to one of the ports loads data into the output latches and to the relays themselves Reading data back from a port returns the data cu
56. nsion Connector P2 P4 1 DO 1 2 GND D1 3 4 GND D2 5 6 GND DATA D3 7 8 GND D4 9 10 GND D5 11 12 GND D6 13 14 GND D7 15 16 GND m CLEAR 17 18 GND CONTROL WSTRB 19 20 GND R W 21 22 GND A0 23 24 GND Al 25 26 GND A2 27 28 GND PORES 29 30 GND 4 31 32 GND 5 33 34 GND BUSY 35 36 GND 37 38 GND 39 40 GND 4 42 43 44 45 46 47 48 49 50 Figure 8 5 Expansion Connectors P2 and P4 8 8 Power Distribution The proper delivery of power to each of the loads I O boards requires that the power distribution be configured in a way to avoid interaction between the loads When considering an example such as shown in Figure 8 6 it becomes obvious that there is the potential for interaction of one load with another depending on how much current each load I O board draws If the load furthest from the power source load 4 draws the most current the voltage available to it and its neighboring load could be considerably less than the voltage provided to the load connected closest to the power source load 1 Keep the power bus ribbon cable as short as possible to minimize I R drops Also if possible place the loads I O boards that draw the most current closest to the power supply This will minimize the interaction between high current and low current loads 8 5 LOAD 3 LOAD4 ee OARD I O BOARD VOBOARD n Rcable Rcable Rcable Rcable Figure 8 6 Power Distribution Load Management An
57. o interference characteristics of information technology equipment EN 50082 1 EC generic immunity requirements IEC 801 2 Electrostatic discharge requirements for industrial process measurement and control equipment IEC 801 3 Radiated electromagnetic field requirements for industrial process measurements and control equipment IEC 801 4 Electrically fast transients for industrial process measurement and control equipment Carl Haapaoja Director of Quality Assurance Measurement Computing Corporation 16 Commerce Boulevard Middleboro MA 02346 508 946 5100 Fax 508 956 9500 E mail info measurementcomputing com www measurementcomputing com
58. or a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corp nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if Measurement Computing Corp has been notified in advance of the possibility of such damages MEGA FIFO the CIO prefix to data acquisition board model numbers the PCM prefix to data acquisition board model numbers PCM DAS08 PCM D24C3 PCM DAC02 PCM COM422 PCM COM485 PCM DMM PCM DASI6D 12 PCM DASI6S 12 PCM DAS16D 16 PCM DAS16S 16 PCI DAS6402 16 Universal Library InstaCal Harsh Environment Warranty and Measurement Computing Corp are registered trademarks of Measurement Computing Corp IBM PC and PC AT are trademarks of International Business Machines Corp Windows is a trademark of Microsoft Corp All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corp is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corp neither for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corp rights reserved No part of this publication may be reproduced stored in a retrieval system
59. or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corp Notice Measurement Computing Corp does not authorize any Measurement Computing Corp product for use in life support systems and or devices without the written approval of the President of Measurement Computing Corp Life support devices systems are devices or systems which a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corp products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people Copyright 2000 Measurement Computing Corp HM MetraBus doc ii TABLE OF CONTENTS IMNUO 1 1 1 1 THE METRABUS CONCEPT HE ORT E I EUREN GERE OFEN Yo REUS ere VAR eee rere lens 1 1 1 2 THEMETRABUS MAP AND CABLE ostrea reete eripe ie etes 1 1 suec pc 1 2 L4 PROGRAMMING U O BOARDS eire teer etre Uer ree ue terr Pres de enden 1 2 1 3 PACKAGING AND INTERCONNECTION posre hee en eee e bebe Eae dry epe ee deren 1 3 2 MDB64 SERIES DRIVER BOARDS eese eese ee enses enne ta tne ta
60. ose wires screws or components Estimate the total load power requirement Determine the power distribution configuration and connector utilization Select an unused MetraBus cable connector and plug the cable into the power supply Make certain to align the connector according to its key ways Plug the line cord into the power source Turn ON power switch 8 11 MBUS PWR Specifications GENERAL Efficiency Hold Up Time Line Regulation In Rush Current Withstand Voltage Insulation Resistance Miscellaneous INPUT Voltage Frequency Current OUTPUT Current 5 VDC 15 VDC 15 VDC Derating Ouput Power 25CFM forced air cooling Convection cooling Over current Protection Ripple and noise Temperature Coefficient Miscellaneous 65 min at 110W 12ms min 0 5 max full load 15A 115 VAC 25 C 30A 230 VAC 25 C 3000VAC from input to output 1500V AC from input to ground 10M ohm min from output to ground Jumper selectable connection from Chassis ground to Power Output Common Meets conduction limits FCC 20780 Level B CISPR22 EN55022 Level B Meets or exceeds safety specifications UL 1950 CSA 234 IEC 950 90 to 132 VAC 180 to 264 VAC 47 to 440Hz 3 2A rms 115 VAC 1 8A rms 230 VAC 10A max 4A max 1A max Derate Linearly from 100 load at 50 C to 50 load at 70 C 100 watts max 80 watts max All outputs protected to short circuit condition 1 peak to peak max
61. pe modules are permitted within a bank however for proper operation any write to a bank containing input modules should set all bits associated with input modules to a logical 0 Hot swapping of input and output relays is not permitted 3 consecutive address locations within the 64 available address locations configurable at even boundaries of 4 7ALS541 74LS540 Locations provided for installation of termination resistors for MetraBus cable Data read back capability for data and address confirmation ULN2803 Darlington transistor open collector COMPATIBLE SOLID STATE RELAY MODULES Single DC Input amp Output SSR ODC 05 SSR ODC 05A SSR IDC 05 SSR IDC 05NP Single AC Input amp Output SSR OAC 05 SSR OAC 05A SSR IAC 05 SSR IAC 05 CONNECTORS MetraBus Connector type Dielectric Strength Current Rating Module I O Connector type Current Rating Voltage Rating 50 pin header male gt 1000Vrms 1A max per pin Detachable screw terminal 15A max 300V max 7 6 Wire sizes External Power Connector type Current Rating Voltage Rating ENVIRONMENTAL Operating Temperature Storage Temperature PHYSICAL Size MetraBus Cable type Connector Type 12 22AWG 4 pin Molex 2 in parallel 10A max 250V AC DC 0 to 70 C 40 to 100 C 16 x 4 8 inches 40 64 x 12 192 cm HITACHI 23100 series 50 cond flat ribbon 3M 3433 7 7 8 MBUS PWR POWER SUPPLY BOARD 8 1 General The MBUS PWR
62. rd just above and to the left of the MetraBus connector The numbers printed above the DIP switches indicate the values of the corresponding individual switches The switches add a value in the ON position 2 Select an unused board address and set the DIP switches accordingly For example in order to set a board address of 24 switches with corresponding values of 8 and 16 would be ON while the others remain OFF Remember that each MIO 32 uses four consecutive addresses of the 64 addresses that are available and must be set to an unused non overlapping address in order to avoid bus conflicts 3 After setting the board address connect the MIO 32 to the MDB64 controller card via the MetraBus cable The MetraBus cable connector is keyed for your protection Check the key ways for correct alignment prior to plugging in the MetraBus cable Remove power from the MetraBus cable before connecting any I O boards 4 If you have only one MIO 32 or if your MIO 32 is the last board in your system install the resistor terminating networks provided with your driver card in the sockets marked RN1 and RN2 These resistor networks minimize signal reflections caused by long cable lengths They are optional however and are not needed for cables of 50 feet or less 6 2 6 3 Typical Output Connections To ensure proper operation of the MIO 32 with a variety of logic level circuitry follow this description and illustrations when wiring your application Th
63. rlapping board address in order to avoid address conflicts 3 After setting the board address connect the MII 32 to the MetraBus cable The MetraBus cable connector is keyed for your protection and to facilitate alignment always remove power from the MetraBus cable prior to connecting any I O boards 4 If you have only one 32 or if your MII 32 is the last board in your system install the resistor terminating networks provided with your controller driver card in the sockets marked RN1 and RN2 These resistor networks minimize signal reflection from long cable lengths They are optional however and have little effect for cables of 50 feet or less 5 2 5 3 Configuring the MII 32 for Non Standard Inputs The MII 32 can accept input signals greater than 5VDC with a simple resistor change on each input channel The current limiting resistors labeled R1 R32 on the MII 32 board are normally 220 ohm 1 4W The user can replace these resistors R1 32 with components of higher value or increased power handling capability in order to accommodate the power dissipated from larger input signals See the wiring diagrams in the Typical Input Connection section for actual signal hook up 5 4 Typical Input Connections The MII 32 is compatible with digital inputs from a variety of input sources To ensure proper operation of the MII 32 when wiring your input signals follow the guidelines outlined below and refer to Figure 5 3 TTL and CMOS o
64. rrently in the output latch without changing it This feature allows the user to verify that data on the outputs was received correctly relays are set in their OFF state at power up and following a MetraBus software CLEAR The MEM 32 is connected to the MetraBus system via a 50 conductor ribbon cable that carries all address and data signals and necessary power 4 5 VDC Larger systems will benefit from the power distribution capabilities of the C POWER X cables and the on board Molex power connectors Detachable screw terminals on the MEM 32 offer easy connection for field wiring while accepting standard 12 22 AWG wire sizes The MEM 32 can be mounted in a variety of enclosures including 19 rack mount enclosures NEMA enclosures and DIN Rail mounting kits Please consult a current Measurement Computing Corp catalog or web site for the latest MetraBus accessories and products 3 1 3 2 Installation 3 2 InstaCal InstaCal is the installation calibration and test software that is supplied with all Measurement Computing Corp I O boards InstaCal will guide you through setting the various switches on the MDB 64 boards as well as your I O board Information is provided below to help you configure your board if you choose not to use nstaCal For further information on nstaCal please refer to the separate Software Installation Manual you received with your order To use nstaCal for MetraBus installation please install the MDB serie
65. s I O boards may be installed by going to the Install Board menu and selecting the Add MetraBus Board menu item 5 2 2 Setting the MII 32 Board Address The following section is provided for those who choose not to follow the guidance of the InstaCal utility software that you have received The I O address for each MII 32 connected to a single MetraBus cable must be unique and non overlapping for the driver card to target that specific MII 32 These addresses allow the boards in a MetraBus system to operate independently Each MII 32 uses four of the available 64 MetraBus addresses These four addresses run consecutively starting from the MII 32 board address Setting the board address is described below Figure 5 2 illustrates a typical board address switch setting of 32 decimal 32 16 8 4 1 2 3 4 Figure 5 2 Setting the Board Address The board address is set using the following procedure 1 The board address DIP switches are located on the far left side of the board just above and to the left of the MetraBus interface connector The numbers above the DIP switches indicate the value of the switches immediately below The numbers have value only in the ON position 2 Select an unused board address and set the switches accordingly For example to set a board address of 24 set switches with values of 8 and 16 ON Remember that each MII 32 uses four of the 64 MetraBus I O addresses and must be set to an unused non ove
66. s driver board first using the Install Board menu Once the MDB64 board is installed in nstaCal MetraBus I O boards may be installed by going to the Install Board menu and selecting the Add MetraBus Board menu item 3 2 2 Setting the MEM 32 Board Address The following section is provided for those who choose not to follow the guidance of the InstaCal utility software that you have received The I O address for each MEM 32 connected to a single MetraBus cable must be unique and non overlapping for the driver card to target that specific MEM 32 These addresses allow the boards in a MetraBus system to operate independently Each MEM 32 uses four of the available 64 MetraBus addresses These four addresses run consecutively starting from the MEM 32 board address Figure 3 2 below shows a typical board address switch setting of 32 decimal 32 16 8 4 2 3 4 Figure 3 2 Board Address Switch Set the board address using the following procedure The board address DIP switch is on the far left side of the board just above and to the left of the MetraBus connector The numbers printed above the DIP switches indicate the values of the corresponding individual switches The switches add a value in the ON position 2 Select an unused board address and set the DIP switches accordingly For example in order to set a board address of 24 switches with corresponding values of 8 and 16 would be ON while the others remain OFF
67. se address switch to a different address Refer to your PC manual for available addresses in the I O space After selecting an address change the base address switch to match DOWN is the OFF direction of the switches Use the down direction to select address values 2 2 2 3 MetraBus Power 2 3 1 5V Power Jumper The MDB64 provides the 5 VDC power supply voltage to the MetraBus I O boards through the 50 pin ribbon cable The 50 pin ribbon cable has a current rating of 1 Amp per line at 25 C For applications requiring power beyond what MDB64 5VDC fused circuit is capable of providing 1 Amp max an external power supply such as the MBUS PWR should be used If an external power supply is used place the MDB64 5V POWER jumper in the EXT position 2 3 in Figure 2 3 This isolates the PC s 5VDC power supply from the external power supply CAUTION Failure to place the 5 POWER jumper in the EXT position when using an external power supply such as MBUS PWR may cause fuse F1 to blow and could damage the MetraBus system and the host computer ISA MDB64 JUMPER MBUS PWR Computer FUSE EXT INT 5VDC 15VDC 5VDC 1A 250V POWER METRABUS CABLE FIGURE 2 3 5VDC Internal External Power Jumper Table 2 1 Power Jumper Use 5V POWER JUMPER JUMPER FUNCTION POSITION LABEL 1 2 INT MDB64 passes computer 5 VDC to the MetraBus I O boards MDB64 uses an external power supply or MBUS PWR to supply 2 3 EXT 5VDC
68. ssible current requirement for three MSSR 24 boards exceeds the maximum allowable current supplied by the MDB64 CAUTION As described in the MDB64 user manual the MetraBus 50 pin ribbon cable is only capable of providing 1 Amp of continuous 5VDC current from the PC to the MetraBus I O board s For applications requiring more than 1 Amp of 5VDC current or a combination of 5VDC and 15VDC supplies a high quality external power supply such as the MBUS PWR is required NOTE If an external power supply is used in conjunction with the MDB64 MetraBus controller card the MDB64 5V POWER jumper must be placed in the in the EXT position 7 4 1 External Power Supply using a 50 pin Ribbon Cable When using the MBUS PWR board or an equivalent external power supply in conjunction with the MetraBus 50 pin ribbon cable the user must consider the ribbon cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up would be 5 10 e 15 1 e 5VDC 1 NOTE These power levels coincide with the ribbon cable s ten 5 1 max per line power lines along with the single 15VDC power lines 1A max per line 7 4 2 External Power Supply using a C Power X series MetraBus Power Cable For applications that exceed the 1A pin power limitation from either of the 5VDC and 15
69. stallation please install the MDB series driver board first using the Install Board menu Once the MDB64 board is installed in nstaCal MetraBus I O boards may be installed by going to the Install Board menu and selecting the MetraBus Board menu item 7 2 2 Setting the MSSR 24 Board Address The following section is provided for those who chose not to follow the guidance of the nstaCal utility software that you have received The I O address for each MSSR 24 connected to a single MetraBus cable must be unique and non overlapping for the driver card to target that specific MSSR 24 These addresses allow the boards in a MetraBus system to operate independently Each MSSR 24 uses three of the available 64 MetraBus addresses These three addresses run consecutively starting from the MSSR 24 board address Due to the binary nature of the address bus the board address can only be set on even boundaries of four This effectively means that although the MSSR 24 only uses 3 MetraBus addresses it actually occupies four addresses Figure 7 2 below shows a typical board address switch setting of 32 decimal ON Figure 7 2 Board Address Switch Set the board address using the following procedure 1 The board address DIP switch is on the far left side of the board just above and to the left of the MetraBus connector The numbers printed above the DIP switches indicate the values of the corresponding individual switches The switch
70. tal programming easy The 12 bit analog output boards are controlled by two 8 byte ports one byte per channel The analog equivalent of the 8 bit data is output by the DAC on the MetraBus analog output board Analog input for the MetraBus is full featured allowing user control of application specific parameters Prior to reading A D data from the MetraBus MAI 16 set the range channel and type 12 bit or 8 bit An A D conversion is triggered by software only 1 5 Packaging and Interconnection MetraBus I O boards are 19 rack mountable using one of the ENC 19 series enclosures a standard NEMA cabinet or any DIN Tray CIE Chassis 06 A 50 way 0 05 inch spacing ribbon cable connects the MetraBus controller driver card to the I O boards Use the MetraBus cable at lengths up to 100 feet Connectors are standard 50 pin insulation displacement types Parallel architecture allows board placement at any point along the MetraBus cable 1 3 2 MDB64 SERIES DRIVER BOARDS 2 1 Introduction The ISA PCI CPCI and PC104 MDB64 driver boards are the primary control center of the MetraBus system The MDB64 board controls all I O operations between the computer and MetraBus I O boards The MDB64 generates all timing and control signals and controls all system level data and address transfers A single MDB64 can address up to 64 MetraBus I O boards See Figure 2 1 for a functional block diagram of the MDB64 series driver board METRABUS MET
71. the MDB series driver board first using the Install Board menu Once the MDB64 board is installed in nstaCal MetraBus I O boards may be installed by going to the Install Board menu and selecting the MetraBus Board menu item 2 1 2 2 2 Setting the Base Address Switch ISA and PC104 MDB64 only The following section will guide you through the setup of our MDB64 series board if you choose not to take advantage of the nstaCal utility s setup guidance The MDB64 uses four consecutive PC I O address locations These are referred to as the BASE ADDRESS BASE ADDRESS 1 42 and 43 The BASE ADDRESS of the ISA and PC104 MDB64 boards is set via dip switch The base address switch Figure 2 2 is preset at the factory to 768 decimal 300 hex Setting the dip switch is described below as well as in the nstaCal software utility you received with your board The PCI and CPCI MDB64 are fully plug and play with no on board switches BASE ADDRESS 9 A8 A7 A5 4 A3 A2 ON Figure 2 2 Default Base Address Switch Settings DOWN Selects Address 768 decimal 300h ADDRESS SWITCH ADDRESS DECIMAL ADDRESS HEX 9 512 200 8 256 100 7 128 80 64 40 5 32 20 4 16 10 8 2 4 4 NOTE Figure 2 2 switch settings indicate a value of 512 256 768 decimal 200 100 300 hex If I O address 768 300 hex is occupied by another device reset the ba
72. utputs can sink more current than they can source Therefore when monitoring these outputs supply 5VDC to the high side of the channel input and tie the output from the TTL or CMOS signal to the low side A low signal from the TTL CMOS gate then causes the MII 32 to sense a high thereby inverting the data This inversion is software correctable 5VDC 5VDC CMOS LOGIC INPUT MII32 HIGH INPUT FOR OPEN 0 5VDC CONTACT INPUT RETURN MIL32 Opto coupler 220 2 0 24VDC TS INPUT NS RETURN gt nm HIGH INPUT FOR CLOSED CONTACT NOTE Resistor should be replaced with component having a value and power rating compatible with 0 24VDC logic Figure 5 3 Typical Input Connections 5 3 5 5 Programming the MII 32 The MetraBus is fully supported by Measurement Computing Corp powerful Universal Library UL software driver We highly recommend that you take advantage of the power of UL to simplify your programming task For details on utilizing the Universal Library please refer to the UL manual as well as the many software examples provided The following is provided for those wishing to program their system based on register level programming Though the MetraBus is a fairly simple architecture this should only be attempted by experienced programmers 5 51 MII 32 Register Map The MII 32 uses 4 consecutive registers within the MetraBus address space We will refer to these as the Board Address Board
73. void bus conflicts 3 Select an unused board address and set the DIP switches accordingly For example in order to set a board address of 24 switches with corresponding values of 8 and 16 would be ON while the others remain OFF Remember that each MEM 8 uses four consecutive addresses of the 64 addresses that are available and must be set to an unused non overlapping address in order to avoid bus conflicts 4 After setting the board address connect the MEM 8 to the MDB64 controller card via the MetraBus cable The MetraBus cable connector is keyed for your protection Check the key ways for correct alignment prior to plugging in the MetraBus cable Remove power from the MetraBus cable before connecting any I O boards 5 If you have only one MEM 8 or if your MEM 8 is the last board in your system install the resistor terminating networks provided with your driver card in the sockets marked RN1 and RN2 These resistor 42 networks minimize signal reflections caused by long cable lengths They are optional however and are not needed for cables of 50 feet or less 4 3 Programming the MEM 8 The MetraBus is fully supported by Measurement Computing Corp powerful Universal Library UL software driver We highly recommend that you take advantage of the power of UL to simplify your programming task For details on utilizing the Universal Library please refer to the UL manual as well as the many software examples provided The following is
74. wer Supply using a 50 pin Ribbon Cable When using the MBUS PWR board or an equivalent external power supply in conjunction with the MetraBus 50 pin ribbon cable you must consider the ribbon cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of setup is e 5 10 e 15 1 e 5 1 NOTE These power levels coincide with the ribbon cable s ten 5 1 max per line power lines along with the single 15VDC power lines 1 A max per line 3 4 2 External Power Supply using a C Power X series MetraBus Power Cable For applications that would exceed the 1 A pin power limitation from either of the 5VDC and 15VDC supplies Measurement Computing Corp has provided each of its MetraBus I O boards with on board power connectors P30 and P31 These power connectors are designed to be used with a MetraBus Power Cable C POWER X in applications requiring power levels beyond what the 50 pin ribbon cable is capable of handling The user must still consider the power cable s power handling capability along with any potential loading issues IR drops ambient temperature etc The total power output capability for this type of set up would be as follows e 5 10 Amps e 15VDC 4 Amps max e 5 1 Amp max NOTE These power levels coincide with the

MetraBus User`s Manual - Measurement Computing

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