GE Fanuc
Contents
1. 2 Control wiring usually either low voltage DC or 120 VAC of limited energy rating Examples are wiring to start stop switches contactor coils and machine limit switches This is generally the interface level of the Genius discrete I O 3 Analog wiring transducer outputs and analog control voltages 4 Communications and signal wiring the communications network that ties everything together including computer LANs MAD and the Genius communications bus These four types of wiring should be separated as much as possible to reduce the hazards from insulation failure miswiring and interaction noise between signals A typical PLC system may require some mixing of the latter three types of wiring particularly in cramped areas inside motor control centers and on control panels In general it is acceptable to mix the Genius bus cable with the I O wiring as well as associated control level wiring All noise pickup is cumulative depending on both the spacing between wires and the distance span they run together I O wires and Genius bus cable can be placed randomly in a wiring trough for lengths of up to 50 feet If wiring is cord tied harnessed do not include the bus cable in the harness since binding wires tightly together can damage some cable types Wiring external to equipment and in cable trays should be separated following NEC practices Lightning Transient Suppression GFK 0412B Running the bus cable outdoors or betwe2. 1 Using the mounting plate as a template cut an opening in the panel for the mating connector Also drill two holes for the mounting hardware 2 Attach the mounting plate and mating connector to the panel using the mounting hardware supplied 3 Secure the two ends of the serial bus cable to the back of the panel using strain relief brackets 4 Strip the ends of the wires Twist the two Serial 1 wires together and attach them to pin 5 of the connector Twist the Serial 2 wires together and attach them to pin 9 Similarly attach the Shield wire s to pin 4 The following illustration shows connections for incoming and outgoing serial bus cable As with other devices the HHM connector may be at either end of its bus If it is there will only be one bus cable attached Bus Strain Bus 5245 Cable Reliefs Cable Mounting aa2240 Hardware n Hand held Mating Mounting Monitor Connector _ Plate Connector m 2a m 6 ye E E d E cS SER 2 amp EP I Pin 9 dl E L V EN SERI crimp 0 o 4 t e Pin5 Oy Mounting Surface rear view When making bus connections the maximum exposed length of bare wires should be two inches For added protection each shield drain wire should be insulated with spaghetti tubing to prevent the Shield In and Shield Out wires from touching each other If the Hand held Monitor connector is at either en
3. Waveform distortion is due to the limited bandwidth of wire media which causes the various frequency components of a pulse waveform to travel at different speeds and thus arrive separately in time called dispersion As a result the received pulse appears rounded and distorted The signal at the extreme end from the transmitter may look rounded and skewed as shown below Distortion is most apparent near the beginning and end of a pulse train where in may appear as a change in phase or a frequency shift Critical timing for a logic 0 transmission is shown below in a more detailed version of the waveform Tw Tw Vy eae r Vr Note the first and last half cycle look wider The most critical to operation is the first full cycle of the first start bit of the transmission Detection of this pulse establishes the time synchronization of the receiver to the incoming waveform Missing this first pulse does not cause the data to be missed but may compromise the noise immunity with respect to extra or missing pulses The frequency of the AC pulse is 3X the baud rate as noted earlier This means the normal period Tp normal is m 2 17 microseconds at 153 6 Kb m 4 34 microseconds at 76 8 Kb m 8 68 microseconds at 38 4 Kb Appendix A Characteristics of the Genius Bus A 5 The half cycle pulse width when measured between the positive and negative receiver thresholds denoted as Tp 2 in the figure will vary along
4. 4byte message 2bytes SOBand EOB 6bytes 4byte message 2bytes SOBand FOB 6bytes Global Data addition 12bytes The time required to transmit the data depends on the baud rate After adding together the message bytes for Global Data multiply the total by one of the following transmission rates 0 0715mS byte for 153 6 Kbaud either standard or extended 0 143mS byte for 76 8 Kbaud 0 286mS byte for 38 4 Kbaud Example In this example there are 8 Series 90 30 Genius Communications Modules on the bus and no other devices Each module is sending 4 bytes of Global Data The baud rate on the bus is 153 6 Kbaud standard Scan time on this bus would be 8 Genius Communications modules 8 x 1 09 8 72mS 24 unused Device Numbers 24 x 0 026 0 62mS 8 Global Data messages 4 bytes each 4 2 x 0 0715 _3 43mS Total bus scan time 1277mS Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Estimating Data Response Time For applications where it is important to know how long it will take for one module to send Global Data to another and to receive a reply based upon that data you can estimate response time by adding together the maximum time that may be required for each portion of the input to output cycle GENIUS GENIUS 243561 COMMS COMMS CPU MODULE MODULE CPU Mae ade PROGRAM sus ean PROGRAM DATA DATA OUT IN The worst
5. BUS Ah Mics ce Mit ete mnes A 5 Serial Data Format ode wade coheed nO e Metis e edere A 6 BUS ACCOSS odore Uode a pee sum deret Dore e E du aeuo E E ens A 7 Bus Errors Caused by Noise 0 00 e eee eee eee nene e a A 7 Appendix B Comparison of the GCM and GCM cece eee ee eee B 1 vi Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Module Description The Genius Communications Module is a standard Series 90 30 PLC module It plugs easily into the PLC s backplate The latch on the bottom of the module secures it in position The module s Terminal Assembly with its protective hinged cover is removable Bus connections are made to the Terminal Assembly and routed out through the bottom The Terminal Assembly can be removed without breaking the bus and disrupting Genius communications if appropriately installed as described in chapter 2 a43394 COMM OK LED REMOVABLE TERMINAL ASSEMBLY HINGED COVER There are no DIP switches or jumpers to set on the module Its configuration is completed using the Hand held Programmer or system programming software LEDs LEDs on the front of the Genius Communications Module indicate its operating status and the status of communications between the module and the Series 90 30 PLC OK indicates that the module has passed its powerup test and is operating COM indicates that the Series 90 30 PLC has initialized the module and
6. 2 Series 90 30 Genius Communications Module User s Manual August 1997 Index Communications Errors 1 2 Compatibility 1 3 Configuration Planning 4 1 Using a Hand held Programmer 4 2 Connector Hand held Monitor 2 10 Control wiring 2 9 CPU Sweep 3 8 CRC checking A 7 D Device Number 3 2 4 3 Device Number conflict 1 2 Devices on the Bus 3 4 Disconnecting the Bus 2 2 D shell connector installing 2 12 E Environmental Specifications 1 3 F Fiber optics 2 9 G G Memory 3 2 GCM module compared to GCM B 1 Genius I O blocks on bus 1 1 3 6 Global Data 1 3 Global Data Length 4 5 4 6 Grounding 2 9 H Hand held Programmer As part of a system 1 1 Using for Configuration 4 2 Hand held Monitor connector 2 10 Index 1 Index Index 2 I Oblocks on bus 1 1 3 6 Installing the Module 2 1 L LEDs 1 2 Logicmaster 90 70 software 3 5 M Memory for Global Data in other types of host 3 4 in Series 90 30 3 2 Module Description 1 2 Module Installation 2 1 O OK LED 1 2 P Power wiring 2 9 Program Execution Time 3 11 Propagation delays A 5 R Removing the bus cable 2 2 Series 90 30 Genius Communications Module User s Manual August 1997 Removing the Module 2 2 S Series 90 30 PLC compatibility 1 3 Series 90 70 PLC 3 5 Series Five PLC 3 5 Signal wiring 2 9 Slot Number 2 1 4 3 Specifications 1 3 Surge s
7. a jumper between the two terminals as shown on the right above Failure to install the jumper will cause the entire bus to be disrupted whenever the faceplate is removed Terminating the Bus The bus must be terminated at both ends by the cable s characteristic impedance The list of cable types includes termination requirements If the GCM is at the end of the bus install a resistor of the appropriate impedance across its Serial 1 and Serial 2 terminals as shown below If you need to install the terminating resistor across different terminals than those used for the signal wires attach jumper wires between the signal wire terminals and the resistor terminals to prevent the bus from becoming unterminated if the Terminal Assembly is removed Failure to do so will cause the entire bus to be disrupted whenever the faceplate is removed Signal Wires and Resistor Connected to Same Terminals preferred Serial 1 signal wire resistor Serial 2 signal wire Serial 1 and 2 terminals Signal Wires and Resistor Connected to Different Terminals jumpers Serial 1 signal wire resistor Serial 2 signal wire Serial 1 and 2 terminals Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Wiring Guidelines Four types of wiring may be encountered in a typical factory installation 1 Power wiring the plant power distribution and high power loads such as high horse power motors
8. at or below the threshold may still not cause the bit to be missed due to a voting algorithm in the logic however Likewise no pulses greater than Vr should exist during logic 1 intervals Occasional extra pulses during this interval are also rejected by the logic Line reflections will show up as notch distortion during the pulse or low level pulses during 1 intervals and their appearance is synchronized to the baud frequency These cause no problem if they do not cause violation of the amplitude criteria of the previous paragraphs The Serial 1 and Serial 2 lines should always have a termination resistor equal to the characteristic impedance of the cable connected at each extreme end When testing a Genius block or other device using a Hand Held Monitor when no serial bus is present a terminating resistor will improve integrity 75 Ohms is recommended Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Effect of Long Cables Repeaters or Unspecified Cable Types on Maximum Length Bus GFK 0412B Three effects limit the maximum length bus available at any baud rate 1 Voltage attenuation 2 Waveform distortion frequency dispersion 3 Propagation delays Attenuation The transmitter output levels and receiver thresholds determine the maximum attenuation that can be tolerated For Genius products this is the principal determinant when using recommended cable types Distortion
9. by Noise Most capacitively and magnetically coupled noise shows up as common mode voltage on the bus The bus provides a 60 dB common mode rejection ratio A noise spike above 1000 volts would be required to corrupt the data The bus receivers filter out corrupted data and perform a 6 bit cyclic redundancy check to reject bad data Corrupted signals due to noise show up as missed data rather than incorrect data The bus continues operating to the maximum extent possible when bus errors are detected random bus errors do not shut down communications Bad data is rejected by the receiving device and excessive errors are reported to the controller Bus errors are indicated by flickering of I O block and bus controller LEDs If excessive bus errors occur the problem should be found and corrected GFK 0412B Appendix A Characteristics of the Genius Bus A 7 Appendix GFK 0412B b Comparison of the GCM and GCM This appendix summarizes the basic differences between the Genius Communications Module GCM and the Enhanced Genius Communications Module GCM Both types of module can be used on the same bus but they cannot be installed in the same PLC The two types of module can exchange global data with each other GCM GCM ModuleNumber IC693CMM301 IC693CMM302 Quantity per 90 30 PLC 1 3 GlobalDataLengths transmitted up to 256 bits total global data up to 128 bytes received transmitted and rece
10. case turnaround response time can be estimated by calculating 2 Tcpu 2 Tbus 2 Tcpuo Tbus and Tcpu are explained below Bus Scan Time Tbus Tbus is the time that it takes for a complete bus scan token rotation from 0 to 31 This is calculated by adding all of the bus scan time contributions of devices on the bus and Global Data as discussed in the preceding pages The scan time contributions of other types of devices that may be on the bus are listed in the Genius I O System User s Manual Program Execution Time Tcpu A Genius Communications module stores incoming Global Data where it can be accessed by the application program currently executing in the CPU If the CPU services the module shortly after it receives new input data the inputs will be read into CPU memory quickly However if the module has just been serviced by the CPU another CPU sweep must elapse before the newly received Global Data is read Sending Data in Reply to Global Data Received GFK 0412B If the application program will send Global Data in response to Global Data it has received one additional CPU sweep will be required for the application program to process the data The same relationship applies to sending Global Data on the bus If Global data changes as a result of Global Data received the Genius Communications module will send it on the bus during the next bus scan If the token has just passed the Global Data must wait up to the length of
11. for anything else in the program even if the Series Six PLC will not make use of the Global Data it receives If a device using one of the above Device Numbers sends Global Data it will always be received if the Series Six PLC application program opens a window to the Bus Controller using a DPREQ or WINDOW instruction or the Computer Mailbox If the Series Six PLC is set up for Expanded I O addressing registers R001 through R0016 are used for Auxiliary Output Table references AO0001 to AO0256 Auxiliary outputs that correspond to Device Numbers that broadcast Global Data should not be used Series Five A Series Five PLC can send Global Data to the GCM The Series Five Bus PLC Controller that will be used must be assigned a Device Number from 16 to 23 using the Logicmaster Five software or an Operator Interface Unit The Series Five PLC automatically receives Global Data from any GCM that sends it This data will be placed in register memory locations that correspond to the sending device s Device Number See the table above GFK 0412B Chapter 3 Operation and Timing 3 5 3 6 Computer I O Blocks Genius Hand held Monitor Series 90 30 Genius Communications Module User s Manual August 1997 A computer on the bus can exchange Global Data with a GCM The computer s Bus Controller a PCIM or QBIM places Global Data sent by the GCM into a memory location that corresponds to the Device Number of the GCM module The compute
12. sent by the module This Global Data length is shown in bits in this example G032 Line 2 also shows the beginning and ending G memory addresses required for the selected Global Data length G0033 76G0064 If the correct number of bits is shown no change is necessary To change the number of Global Data bits to be sent by the module enter the new number from the HHP keypad The number must be a multiple of 32 After entering the number of bits press the ENT key If the module will also receive Global Data from other devices on the bus press the Right Arrow key to display additional Device Numbers and Global Data lengths Chapter 4 Configuration 4 5 4 6 Select the Lengths of Global Data Received by the Module The lengths of configured incoming Global Data from Device Numbers 16 to 23 are displayed as the Right Arrow key is pressed on the previous screen If NO asterisk appears beside the Device Number bus address on line 1 then line 2 shows the length of data that will be received from the module indicated on line 1 For example pressing the Right Arrow key once from the screen shown in the previous example displays the following RO 05 GCM BA18 S G032 G00065 G0096 There is no asterisk at the left of the Device Number That shows the device is not the one currently being configured the length selected on this screen would be the amount of Global Data being received by Device Number 17 from Device Number 18 To
13. terminations Selection of wire type may be limited by local and national codes and industry standards Consult the cable manufacturer to determine the cable s suitability for a particular type of installation Conservative wiring practices and national and local codes require physical separation between control cir cuits and power distribution or motor power Refer to sections 430 and 725 of the National Electric Code Also refer to Appendix A for more detailed information about the bus Cable NEC Outer Terminating Numberof Dielectric Ambient MaximumLength Cable Run amp Make USA Diameter Resistor Conduc Voltage Temp feet metersatbaudrate Type 10 to 20 tors Rating Rating 1 2 Watt AWG 153 6s 153 6e 76 8 38 4 A 9823 none 350in 150 ohms 2 122 30v 60C 2000ft 3500ft 4500ft 7500ft C 4596 CL2 8 80mm 606m 1061m 1364m 2283m M M39240 CM B 89182 CL2P 322in 150 ohms 2 122 150v 200C 2000ft 3500ft 4500ft 7500ft 8 18mm 606m 1061m 1364m 2283m B 9841 CM 270in 120 ohms 2 24 30v 80C 1000ft 1500ft 2500ft 3500ft M M3993 CL2 6 86mm 303m 455m 758m 1061m A 9818C CL2 330in 100 ohms 2 20 300v 80C 1500ft 2500ft 3500ft 6000ft B 9207 CM 8 38mm 455m 758m 1061m 1818m M M4270 CM A 9109 CL2P 282in 100 ohms 2 20 150v 200C 1500ft 2500ft 3500ft 6000ft B 89207 CM 7 16mm 455m 758m 1061m 1818m C 4798 i M M44270 CMP A 9818
14. that the module is receiving communications from the bus After successful startup COM should remain ON unless an excessive number of communications errors occur Ten errors in ten seconds caused by noise on the bus improper wiring baud rate conflict or Device Number conflict will cause COM to blink 1 2 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Specifications Ordering Information Module Type LEDs Global Data Length per Communications Module per Series 90 30 PLC Environmental Operating Temperature Storage Temperature Humidity Vibration and Shock 1C693CMM301 304 Series 90 30 PLC module providing Global Data communications with up to 7 other PLCs OK COM Up to 256 bits configurable in 32 bit increments Up to maximum available G memory 0 C to 60 C 32 F to 140 F 25 C to 70 C 13 F to 158 F 5 to 95 non condensing 0 2 inch displacement 5Hz to 10Hz Compatibility Series 90 30 PLC Bus Controllers Enhanced Genius Communications Module GCM Genius Hand held Monitor Genius I O Blocks GFK 0412B 1 G 10Hz to 200Hz 5G 10Ms duration Remote Racks Genius Communications Modules that are version IC697CMM301F 304F or later can be located in a remote rack Earlier module versions can be upgraded for this purpose using Upgrade Kit 44A286397 G03 PLC CPU Genius Communications Modules that are vers
15. the bus scan before the module receives its next turn on the bus Chapter 3 Operation and Timing 3 11 Chapter Configuration 4 This chapter describes m Configuration planning m Configurable features of the Genius Communications Module m Configuration steps using the Series 90 30 Hand Held Programmer Configuration Planning Each device in the system requires configuration It is important to be sure that the Device Number baud rate and data length selected for each Genius Communications Module are compatible with selections made for the other devices on the bus The form shown below can be used as a sample when planning the configuration of all Genius Communications Modules that will be sharing a bus BUS CONFIGURATION Bus Description Baud Rate check one 153 6 Kbaud st 153 6 Kbaud ex 78 6 Kbaud 38 4 Kbaud Device Numbers and Global Data Lengths PLC where Device Number of module is Global Data Communications Associated G located Length Module Memory Locations 16 76 G0001 76G0032 17 70 G0033 76G0064 18 760 G0065 76G0096 19 760 G0097 75G0128 20 70 G0129 76G0160 21 760 G0161 76G0192 22 760 G0193 76G0224 23 Yo G0225 76G0256 GFK 0412B 4 1 Configurable Features The GCM can be configured using either the Series 90 30 Hand Held Programmer or the system configuration software If the Hand held Programmer is used it must be attached to and interfacing with the PLC For each Genius Communicatio
16. the next configurable feature of the module 4 4 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Global Data Length GFK 0412B Because each Device Number is associated with a specific starting address in G memory each Device Number also has an associated maximum Global Data length as listed below Device Starting Address Valid Number Lengths 70 G001 76 G033 GOES 70 G097 G129 G161 G193 oG225 By default the Genius Communications Module is configured to broadcast 32 bits of Global Data and not to receive any incoming Global Data from other devices If any Genius Communications Module will send more than 32 bits of Global Data one or more of the succeeding Device Numbers cannot be used by any device which will send Global Data However such a Device Number can be used by a Genius Communications Module that will receive data only or by another type of device on the bus Hand Held Programmer Configuration The next configuration screen can be used to change the lengths of either broadcast or incoming Global Data The display shows the Device Number of the module at the indicated slot location For example RO 05 GCM BA17 lt S G032 G0033 G0064 The asterisk before BA17 in the example above indicates that this is the module currently being configured The letters BA stand for bus address If the asterisk appears then line 2 of the display shows the amount of Global Data
17. time can be estimated by adding up the time required to service all Devices Numbers on the bus including unused Device Numbers Times per Device Number are shown in this table Contribution time in mS at each baud rate Device Type 153 6 Kb std 153 6 Kb ext 76 8 Kb 38 4 Kb os Unused Device Number 0 026 0 052 0 104 0 208 The data rate has a direct bearing on bus scan time The scan time increase from 153 6 Kbaud standard to 153 6 Kbaud extended is slight However the scan time is approximately twice as long at 76 8 Kbaud and four times as long at 38 4 Kbaud Chapter 3 Operation and Timing 3 7 Relationship Between the Bus Scan and the CPU Sweep The bus scan is completely independent of the CPU Sweep The CPU sweep is the Series 90 30 PLC s regular cycle of program execution I O update and other tasks The Genius Communications Module acts as the interface between these two asynchronous activities the bus scan and the CPU sweep It stores Global Data it has received from other devices on the bus In the following example two devices 18 and 22 send Global Data on the bus Each module broadcasts its Global Data while it has the bus token The Global Data is received by a Genius Communications Module in a Series 90 30 PLC SERIES GENIUS 843324 20 18 90 30 COMMUNICATIONS PLC MODULE G MEMORY 16 17 18 DEVICE DEVICE DEVICE NUMBER NUMBER NUMBER 22
18. 97 iii Preface Related Publications For more information refer to the following publications Series 90 30 Installation and Operation Manual GFK 0356 This manualis the primary reference for information about the Series 90 30 PLC Hand held Programmer User s Manual GFK 0402 This book describes the Hand held Programmer displays and explains operator procedures for module configuration programming and data monitoring Logicmaster 90 30 Software User s Manual This manual explains how to use the Logicmaster 90 30 software for programming and configuring a Series 90 30 PLC Genius I O System User s Manual GEK 90486 1 Reference manual for system designers programmers and others involved in integrating Genius I O products in a PLC or host computer environment This book provides a system overview and describes the types of systems that can be created using Genius products Datagrams Global Data and data formats are defined We Welcome Your Comments and Suggestions At GE Fanuc automation we strive to produce quality technical documentation After you have used this manual please take a few moments to complete and return the Reader s Comment Card located on the next page Jeanne Grimsby Senior Technical Writer iv Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Chapter GFK 0412B Introduction The Series 90 30 Genius Communications Module IC693CMM301 is an intelli
19. D none 330in 100 ohms 2 20 1500ft 2500ft 3500ft 6000ft B 9815 z 8 38mm 455m 758m 1061m 1818m 0 911264 none 260in 100 ohms 2 22 flex 250V 80C 1500ft 2000ft 3000ft 4500ft i 6 60 mm ing 455m 606m 909m 1364m E 532185 CM approx 50in 100 ohms 4 pairs 24 gt 150V 80C 1500ft 2000ft 3000ft 4500ft BBDN 12 7mm solid 455m 606m 909m 1364m A 9818 5 315in 100 ohms 4 two pair 150v 60C 1200ft 1700ft 3000ft 4500ft B 9855 CM 8 00mm 22 364m 516m 909m 1364m M M4230 CM A 9110 none 274in 100 ohms 4 two pair 150v 200C 1200ft 1700ft 3000ft 4500ft B 89696 CMP 6 96mm 22 364m 516m 909m 1364m B 89855 CMP A 9814C none 243in 75 ohms 2 20 150v 60C 800ft 1500ft 2500ft 3500ft B 9463 CM 6 17mm 242m 455m 758m 1061m M M4154 CL2 A 5902C none 244in 75 ohms 4 two pair 300v 80C 200ft 500ft 1200ft 2500ft B 9302 CM 6 20mm 22 60m 152m 333m 758m M M17002 CM Notes A Alpha B Belden C Consolidated E Essex M Manhattan O Olflex e Limited to 16 taps at 38 4 Kbaud not known Suitable for applications requiring high flexibility continuous flex or vibration NEC classes are based on data obtained from manufacturers and are subject to change CANADIAN CEC codes are generally similar Other countries may vary The serial bus can be treated as a Class 2 circuit when appropriate wiring practices are followed Maximum av
20. GLOBAL DATA FROM DEVICE 18 The Genius Communications Module Device Number 20 above stores the Global Data it has received When the Series 90 30 CPU executes the input update portion of its sweep it reads this Global Data from the module It copies the data into the G memory locations associated with Device Numbers 18 and 22 SERIES GENIUS a43325 90 30 COMMUNICATIONS PLC MODULE G MEMORY 16 17 4 DEVICE DEVICE DEVICE 18 NUMBER NUMBER NUMBER 19 20 18 22 20 21 22 4 23 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B GFK 0412B After the CPU scans inputs it executes the application program This program can use the new Global Data it has received from other modules on the bus If it will send Global Data it must include logic capable of placing data into the G memory location assigned to its Genius Communications Module The content of this G memory location will be sent to the Genius Communication Module when the PLC updates outputs after the application program executes This activity is asynchronous with the bus scan Continuing the same example after executing its program the CPU sends new Global Data to its Genius Communications Module from the G memory location associated with Device Number 20 SERIES GENIUS a43326 90 30 COMMUNICATIONS PLC MODULE G MEMORY 16 17 18 DEVICE DEVICE DEVICE
21. IC693CMM301 New In Stock GE Fanuc http www pdfsupply com automation ge fanuc series 90 30 IC693CMM301 Series 90 30 1 919 535 3180 In Stock Genius Communications IC693C IC693CM IC693CMM www pdfsupply com sales pdfsupply com FANUC GE Fanuc Automation Programmable Control Products Series 90 30 Genius Communications Module User s Manual GFK0412B August 1997 GFL 002 Warnings Cautions and Notes as Used in this Publication Warning Warning notices are used in this publication to emphasize that hazardous voltages currents temperatures or other conditions that could cause personal injury exist in this equipment or may be associated with its use In situations where inattention could cause either personal injury or damage to equipment a Warning notice is used Caution Caution notices are used where equipment might be damaged if care is not taken Note Notes merely call attention to information that is especially significant to understanding and operating the equipment This document is based on information available at the time of its publication While efforts have been made to be accurate the information contained herein does not purport to cover all details or variations in hardware or software nor to provide for every possible contingency in connection with installation operation or maintenance Features may be described herein which are not present in all hardware and software
22. NUMBER NUMBER NUMBER 20 18 22 The Genius Communication Module stores this data until it receives the bus token At that time it will broadcast the data to all the other devices on the bus In the example system both Device 18 and Device 22 will receive the Global Data sent by Device 20 SERIES GENIUS a43327 90 30 COMMUNICATIONS PLC MODULE G MEMORY 16 17 18 DEVICE DEVICE DEVICE NUMBER NUMBER NUMBER 20 18 22 o gt GLOBAL DATA FROM DEVICE 20 If program execution time is slower than bus scan time it is possible that some incoming Global Data might change before it is picked up by the CPU It is important to be sure that the data will not be sent so briefly that it will be missed If program execution time is faster than bus scan time the CPU may process the same data repeatedly Chapter 3 Operation and Timing 3 9 To the time required to service all devices add the time required for all the Global Data that will be send by the Genius Communications Modules on the bus Each Global Data message will be sent every bus scan Therefore the total size in bytes of each message contributes to the scan time Each Global Data message also includes a 1 byte Start of Block SOB and a 1 byte End of Block EOB For example if two devices on the bus EACH sent a 4 byte Global Data message the total would be
23. Terminal Assembly follow the steps below If wiring is already in place be sure that the Terminal Assembly is being connected to the proper type of module Check the label on the hinged door and the label on the module to be sure they match If a wired Terminal Assembly is installed on the wrong module type damage to the module may result 1 Ifthe pull tab at the top of the Terminal Assembly is extended push it back Close the Terminal Assembly door 2 Place the hook at the bottom of the Terminal Assembly into the corresponding slot at the bottom of the module 3 Pivot the Terminal Assembly upward and firmly press it into position 4 Open the door and check to be sure that the latch is securely holding the Terminal Assembly in place cce h i a43062 ON REFER TO TEXT FOR INSTALLATION PROCEDURE Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Bus Cable Selection The Genius bus is a shielded twisted pair wire daisy chained from block to block and terminated at both ends Proper cable selection is critical to successful operation of the system Each bus in the system can be any cable type listed in the table below Do not mix cables of different impedance regardless of cable run length Do not mix cable types in long and or noisy installations Other small size twisted pair shielded wire of unspecified impedance can be used for short runs of 50 feet or less using 75 ohm
24. actual size Alternatively it can be installed directly on a panel using screws through its mounting ears The DIN rail feet on the back of the unit are removed when the unit is panel mounted 2 10 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Making the Bus Connections The Hand held Monitor connector has two sets of terminals one for incoming cable and the other for outgoing cable Connect the Serial 1 Serial 2 and Shield In terminal of either connector to the previous device Connect the Serial 1 Serial 2 and Shield In terminal of the other connector to the next device The following illustration shows connections for incoming and outgoing serial bus cable As with other devices the HHM connector can be at either end of its bus If it is there will only be one bus cable attached SN Bus Out Bus In wa i X1 Serial 1 7 AY YD X2 Serial2 SA Shield In x x sa SB SB Shield Out As with other devices if the Hand held Monitor Connector is at either end of its bus install an appropriate terminating resistor across the Serial 1 and Serial 2 terminals GFK 0412B Chapter 2 Hardware Installation 2 11 Installing the Hand held Monitor D Shell Connector on the Bus You have the option of installing the D shell connector that is supplied with the Hand held Monitor You will need a mounting plate IC660MPH509 for this type of installation
25. ailable bus lengths may be affected when installation requires the high voltage rated CM Communications rating CM types can replace CL2 but not vice versa GFK 0412B Chapter 2 Hardware Installation 2 5 Using Other Cable Types The cable types listed in the preceding table are recommended for use If the cable types listed above are not available the cable selected must meet the following guidelines 1 High quality construction Most important is uniformity of cross section along the length of the cable Poor quality cable may cause signal distortion and increase the possibility of damage during installation 2 Precision twisted shielded wire of EIA RS422 standard type having a uniform number of twists per unit of length In a catalog this type of cable may also be listed as twinaxial cable data cable or computer cable 3 Relatively high characteristic impedance 100 to 150 ohms is best 75 ohms is the minimum recommended 4 Low capacitance between wires typically less than 20pF foot 60pF meter This may be accomplished by inner dielectrics of foamed type usually polypropylene or polyethylene having a low dielectric constant Alternatively the conductors may be spaced relatively far apart Lower impedance types have smaller cross sections and provide easier wiring for shorter total transmission distances 5 Shield coverage of 95 or more Solid foil with an overlapped folded seam and drain wire is best Braided coppe
26. ally designed to protect the Genius bus is available from CONTROL TECHNOLOGY 835 Hwy 90 Hancock Square Suite 10 P O Box 2908 Bay Saint Louis MS 39520 tel 601 466 4550 fax 601 466 4553 Contact them for application information The devide must be used in combination with power line suppression to fully protect the system Chapter 2 Hardware Installation 2 9 Installing a Hand held Monitor Connector The GCM does not have a built in connector for a Genius Hand held Monitor However a Hand held Monitor connector can be added directly to the serial bus at any location The unit shown below catalog number 44A736310 001 R001 provides a Hand held Monitor connector and serial bus terminals in a single convenient package 5 in 1 673 in 46357 1 27 cm 4 249cm A a Hand held Monitor i Connector ut s o E B SN XJ Panel Mounting Ear 2 834 in 7 198 cm RS TN pne aooo aS xr xaj sa SS rr oQoq Serial Bus Terminals a xs Sal X1 Serial1 ee X2 Serial2 m SA Shield In shown at 100 of actual size SB Shield Out Mounting the HHM Connector This unit can be easily mounted on a rail such as a standard 35mm or 15mm DIN rail The panel mounting ears are not used if the unit is installed on a DIN rail E 46358 m 35mm DIN rail f p 1j ue 7 Removable DIN rail i c Mounting Feet side view shown at 50 of
27. change a Global Data length type in the number of bits from the HHP keypad If there is no device using the Device Number or if a device at the number will not send any Global Data enter a 0 After making an entry press the ENT key Continue entering incoming Global Data lengths from other Device Numbers as appropriate If any device is assigned a Global Data length that is more than 32 bits one or more of the following Device Numbers will not appear for selection For example if Device Number 20 were assigned 64 bits of Global Data length no configuration screen for Device Number 21 would appear and Device Number 21 could not be used Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Appendix Characteristics of the Genius Bus A This appendix describes the characteristics of the bus cable that links Genius devices m Electrical Interface m Serial Bus Waveforms m Effect of Long Cables Repeaters or Unspecified Cable Types on Bus Length m Serial Data Format m Bus Access m Bus Errors Caused by Noise This information supercedes the equivalent text portion of chapter 2 of the The Genius I O System and Communications Manual GFK 90486 The Communications Bus A Genius serial bus consists of two or more Genius devices and usually the bus cable that connects them A single block or bus controller with a Hand held Monitor directly attached properly terminated with a 75Q resistor are
28. considered the smallest possible Genius communications bus GFK 0412B A 1 Electrical Interface A 2 The Genius serial bus uses computer grade twisted pair data cable The half duplex token sequence used requires only a single pair since at any time only one station is transmitting and all others are receiving All stations must receive in order to track the present token value and take their appropriate turn on the bus regardless whether the data is to be used locally The transmit sequence is the same as the serial bus address SBA set into each location during configuration A simplified interface circuit is shown below Wiring Terminals SER1 G SER2 _ s SHIELD OUT ES EL LOCAL COMP gt RM SUPPLY e 5 to 10V COMP RX REF SERT S SER i i SHIELD S SER 2 TX IN amp 8 3 4 A 9 m UH e INTERFACE o gt ISOLATION LOCAL LOGIC COMMON CHASSIS GROUND Signal coupling to the bus is via a high frequency high isolation pulse transformer This permits the bus and the local logic to be at different voltage levels The pulse waveforms are bipolar see next section below to reduce DC baseline offsets in the waveform The daisy chained bus is shown on the left in the above illustration The SER 1 and SER 2 lines are merely tapped at the intermediate locations along the bus These connections must b
29. d of its bus it is necessary to install an appropriate terminating resistor across the Serial 1 and Serial 2 wires 2 12 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Chapter Operation and Timing 3 This chapter explains m Global G Memory in the Series 90 30 PLC m How the Devices on the Bus Handle GCM Global Data m Timing Considerations Estimating Bus Scan Time Relationship Between the Bus Scan and the CPU Sweep Estimating Data Response Time GFK 0412B Global 76 G Memory in the Series 90 30 PLC A portion of the Series 90 30 PLC s memory is reserved for Global Data This bit oriented memory uses the prefix G The amount of G memory available depends on the CPU type For example the model 311 CPU has 256 bits 32 bytes of Global Data memory and the model 331 CPU has 1280 bits 160 bytes G memory is divided into 4 byte increments each of which corresponds to a Device Number from 16 to 23 on the bus The G locations and default data lengths are listed below Device Number Associated Memory Address 16 76G001 to G032 17 G033 to G064 18 G065 to 76G096 19 G097 to G128 20 G129 to G160 21 GI161 to G192 22 G193 to G224 23 G225 to G256 The GCM uses this G memory for both sending and receiving Global Data If a GCM is set up to send Global Data it will broadcast some or all of the data in G memory to all other dev
30. ditional Considerations Series 90 30 AGCM or Bus Controller module in another Series 90 30 PLC places PLC GCM the data in the memory location specified when that module is Module or configured If a GCM module does not need all of the data a message Led Control offset and length can be specified However a Bus Controller must er receive all of the data Series 90 70 To transfer Global Data with a GCM the configuration of the Series PLC 90 70 PLC must be set up to specify the Genius Communications Module IC693CMM301 as a device on the bus Series Six To transfer Global Data with a Series Six PLC the Series Six Bus Controller PLC must be catalog number IC660CBB902F 903F firmware version 1 5 or later For the Series Six PLC Global Data must be initialized by sending a Write Configuration command to that Bus Controller The command must specify a location in register memory where the Global Data to be sent will begin The Series Six PLC automatically receives Global Data sent by any GCM which sends it This data will be placed in register memory locations that correspond to the sending device s Device Number Device Number Associated Memory Address 16 ROO1 to 6R002 17 R003 to R004 18 R005 to R006 19 R007 to R008 20 R009 to RO10 21 R011 to R012 2 R013 to RO14 23 RO15 to RO16 It is important to be sure that registers corresponding to Device Numbers that will send Global Data are not used
31. e consistent since the signal is polarized The shield of the cable is broken into segments at each location Each shield segment is DC grounded at one end SHIELD OUT and terminated with a small capacitor at the other SHIELD IN The segmenting breaks up long ground loop paths The capacitor termination reduces common mode noise from high frequency pickup while preventing large ground loop currents in the shield at low frequencies The alternately switching transistors produce a negative pulse followed by a positive pulse across SERIAL 1 relative to SERIAL 2 The bit waveform is a series of these pulses as will be shown later The transformer provides isolation 2500 volts test between the bus and the local logic permitting these to be at different voltages The internal resistors in each line provide current limit and some termination function during transmission The balanced differential signals on the twisted pair provide high noise immunity due to the magnetic H field cancellation effect of the twisting as well as electric E field reduction by the shielding Most remaining noise pickup is common mode the transformer provides a high common mode noise rejection by looking only at the differential signal across the SER 1 2 lines The two input comparators detect the positive polarity input pulses separately from the negative these are sent to a custom interface logic chip which digitally filters these for timing and sequence then reco
32. ect on bus scan time If a system is experiencing excessive blinking of the bus controller s COMM OK light or if the I O blocks I O Enabled LEDs go off frequently 153 6 Kbaud extended should be used 2 6 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Bus Installation GFK 0412B The Genius bus is connected to the terminal assembly on the front of the GCM module These terminals have the following assignments 245188 ENHANCED GENIUS COMM GENIUS 1 tr COMMUNICATIONS IODULE ji SER 1 n T2 i i e bal 1 i On iSisisisisisisisiss INTERCONNECTED ONLY WHEN ATTACHED TO CIRCUIT BOARD A cj I o ee 35 SISISISISISISISIS S ors 44A729182 016R02 L FOR USE WITH LI IC693CMM301 302 Connection can be made to any of the terminals in a group The cable is routed to and from the terminals via the bottom of the Terminal Assembly cavity Using the cable type selected for the application connect the Serial 1 terminals of adjacent devices and the Serial 2 terminals of adjacent devices Connect Shield In to the Shield Out terminal of the previous device Connect Shield Out to the Shield In terminal of the nextdevice For the first d
33. ected first Thus each device takes turn in order of SBA Unused SBAs result in longer times between messages All devices must detect messages within this skip time delay A bus collision two sources transmitting simultaneously results if this sequence is missed The skip time value is equal to one bit period except on the 153 6e rate where it is two bit periods long The longer intervalis useful to accommodate the longer propagation delays due to longer bus cables or when delays are introduced by fiber optic or other repeaters The worse case is when adjacent SBAs are physically located at opposite ends of a long bus For example assume SBA 4 and 6 are at one end of a 2000 foot bus and SBA5 at the other operating at 153 6s Kb When SBA 4 end character is detected SBA6 immediately starts timing 2 skip times 13 uSec to start of it s transmission SBA5 receives the end character 3 uSec later and starts timing 1 skip time 6 5 uSec Thus SBA 5 will start transmitting 9 5 uSec after SBA 4 quit This allows 3 5 uSec for the signal to get back to SBA6 to cancel it s transmission turn The3 uSec transmission delay leaves only 0 5 uSec to do this and avoid a collision between SBA5 and 6 Bus collisions result in missing data or detected CRC errors Problems resulting from bus collisions can be fixed by not using skipping a SBA resequencing SBAs in order along the bus going from 153 6s baud to the 153 6e or a lower baud rate Bus Errors Caused
34. en buildings may subject it to lightning transients beyond the 1 500 volt transient rating of the system Installing cable underground reduces the probability of a direct lightning strike However buried cables can pick up hundreds of amperes of current when lightning contacts the ground nearby Therefore it is important to protect the installation by including surge protectors on underground data lines The cable shields should be grounded directly Surge suppressors and spark gaps should be used to limit the voltage that might appear on the signal lines It is recommended to install two only silicon surge suppressors or spark gaps to control transients of 1 to 25 Kilovolts from 100 to 1000 amps or more These devices should be installed close to the entrance of the bus to the outdoors Silicon Surge Suppressors are available many sources including Clare General Instruments and Motorola For information about this product in the US contact Lucas Industries Incorporated 5500 New King Street Troy Michigan 48098 Spark gaps are available from Clare Refer to the vendor s literature for installation details In extreme situations such as totally isolated power systems additional protection against lightning damage should be provided by adding surge suppressors for groups of I O blocks Such suppressors should be installed from incoming power leads to ground enclosure baseplate block case where leads enter the enclosure A device specific
35. evice on the bus Shield In is not connected For the last device on the bus Shield Out is not connected a43391 FIRST T DEVICE DEVICE SERIAL SERIAL SERIAL SERIAL IP e S SIUNER M R SERIAL SERIAL SERIAL SERIAL R SHIELD SHIELD SHIELD SHIELD A l l l SHIELD SHIELD OUT QUT Each terminal will accept up to one AWG 14 wire or two AWG 16 wires using ring or lug type connectors The bus shield wires are not insulated do not permit them to touch other wires or terminals The use of spaghetti tubing for this purpose is recommended Chapter 2 Hardware Installation 2 7 2 8 Serial Wire Connections The Serial 1 and Serial 2 terminals are interconnected or the circuit board not on the terminal strip Incoming and outgoing signal wire pairs can be connected to either one or two Serial 1 or Serial 2 terminals Signal Wires Connected to One Terminal seiia1 signal wires Serial 1 terminals Signal Wires Connected to Two Terminals jumper lt Serial 1 T signal wires Serial 1 terminals If you are connecting two signal wires to the same terminal use spade or lug type connectors or twist the exposed ends of the wires together before inserting them This will allow future removal of the Terminal Assembly without disrupting other devices on the bus see Module Removal in this section If you are connecting two signal wires to separate terminals install
36. gent module that provides automatic global data communications between a Series 90 30 PLC and up to 7 other devices on a Genius bus Global Data is data that is transmitted automatically and repeatedly allowing the formation of a shared database A Genius Communications Module can exchange up to a total of 256 bits 32 bytes of Global Data Series 90 30 HHP Series 90 70 a Computer Used for Data Monitoring Series 90 30 a Genius Bus Le Computer Used pue for Programming Y N EN E VEN and Configuration I8 j0pu0 7 sn The illustration above represents a Series 90 30 PLC with a Genius Communications Module that can exchange Global Data with a Series 90 70 PLC and a computer equipped with a PCIM card The diagram also shows a Hand held Programmer and a computer both of which can be used to configure the Series 90 30 PLC and GCM The GCM can monitor input data from I O devices however it cannot control I O devices Other Genius Options for the Series 90 30 PLC There are two other Genius modules for the Series 90 30 PLC a The Enhanced Genius Communications Module GCM The GCM can exchange up to 128 bytes of Global Data with up to 30 other devices on the bus The GCM provides diagnostics information and can potentia
37. guration 4 3 Baud Rate Alldevices on a bus must be configured to use the same baud rate 153 6 Kbaud standard 153 6 Kbaud extended 76 8 Kbaud or 38 4 Kbaud The module is set to operate at 153 6 Kbaud standard when shipped from the factory Baud rate must be selected on the basis of cable type see the table in chapter 2 and the following considerations 1 Ifthe cable length is less than 2000 feet either 153 6 Kbaud standard or 153 6 Kbaud extended can be used The use of 153 6 Kbaud extended is recommended especially if the system will include a dual bus with Bus Switching Modules 2 If cable length is between 2000 and 3500 feet select 153 6 Kbaud extended 3 Ifthe cable length is between 3500 and 4500 feet select 76 8 Kbaud 4 If the cable length is between 4500 and 7500 feet you must select 38 4 Kbaud This data rate only supports a maximum of 16 device on the bus 5 Ifthere are any older Genius products on the bus catalog numbers IC660CBDnnn IC660CBSnnn IC660CBAnnn IC660HHM500 or IC660CBB900 901 the bus must be set up to use 153 6 Kbaud standard Hand Held Programmer Configuration Pressing the right arrow key once from the Bus Address screen shows the currently configured baud rate For example R0 05 GCM BA18 S BAUD 153 6K ST If the baud rate shown is not correct press the key to change it When the correct baud rate appears press the Enter key to change it Press the Right Arrow key to display
38. ices on the communications bus Unless this uses up the PLC s entire G memory space the module can also receive incoming Global Data from up to seven other devices on the bus This data will be placed into the appropriate G memory locations Global Data Lengths The amount of Global Data that can be sent by each GCM depends on how many GCMs will be sending Global Data For example a bus might have four GCMs with one sending 32 bytes of Global Data to the other three a43332 SERIES 90 30 SERIES 90 30 SERIES 90 30 SERIES 90 30 G G G G C C C C n M M M h M ox 32 BYTES OF GLOBAL DATA Or each GCM might send 8 bytes of Global Data to the others 843333 SERIES90 30 SERIES 90 30 SERIES 90 30 SERIES 90 30 G G G G C C C C n M E M M M e 4 l gt lt _ 8 BYTES 8 BYTES 8 BYTES 8 BYTES The amounts of Global Data a Genius Communications Module will send and receive are selected during configuration 3 2 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Global Data Lengths and Device Numbers If any Genius C
39. impedance when termination is included m 3 Peak open circuit voltage contains underdamped ringing due to lack of termination m 4 Input voltages between Vr and Vr thresholds are ignored Appendix A Characteristics of the Genius Bus Serial Bus Waveforms A 4 The actual waveforms seen on the cable depend on the cable impedance and the distance from the station presently transmitting A data 0 is a series of three AC pulses while a 1 is no pulse SS e Vp m VP Ve Vp 0 1 Q7 Q i n 1 gt t lt baudrate SERIAL 1 VOLTAGE RELATIVE TO SERIAL 2 Use caution when connecting instrumentation to the bus A differential probe or a summation of two probes relative to ground is required Inadvertent grounding of one side of the bus can cause loss of data or data errors The pulse frequency is three times the baud frequency for example 460 8 KHz at 153 6 Kb The peak transmitted voltage Vp and the receiver thresholds Vr are per the electrical specification above The peak voltages measured will decline with distance along the cable from the transmitting station so different stations will have varying amplitudes The wave shape will also become more rounded with distance The minimum amplitude pulses seen during a 0 should exceed the receiver threshold Vr of 900 millivolts by 50 about 1 4 volts for best reliability An occasional pulse
40. ion IC697CMM301E 304E or earlier are not compatible with PLC CPU models IC693CPU311H 321H and 331J or later They can be upgraded using Upgrade Kit 44A286397 G03 This module is compatible with any Bus Controller PCIM or OBIM on the bus except Series Six Bus Controller models IC66 CBB900 901 902E or earlier or 903E or earlier The GCM cannot be installed in the same Series 90 30 PLC as a Series 90 30 Genius Bus Controller The GCM cannot be installed in the same Series 90 30 PLC as an Enhanced Genius Communications Module GCM A Genius Hand held Monitor can be used to display the GCM Bus Address its software version and the Series Six register address configured for global data HHM version IC660HHM501H rev 4 5 or later is required There is no Hand held Monitor connector on the GCM module but a Hand held Monitor may communicate with the GCM while connected to any other device on the bus Optionally an additional HHM mating connector can be installed on the bus near the GCM Genius I O blocks may be present on the same bus However the GCM is not compatible with older phase A blocks they should not be installed on the same bus Chapter 1 Introduction 1 3 Chapter Hardware Installation 2 This chapter explains how to install and remove a Genius Communications Module remove and install the module s Terminal Assembly select and install the Bus Cable connect and terminate the communications bus plan s
41. ived up to 128 bytes each from up to 31 otherdevices Number of Other 7 31 GlobalDataDevices Bus Addresses SBAs 16to23 only 0 31 forGlobalData Memory Types for G only 76 G Fol WQ WAI WAQ R GlobalData Diagnostics LEDs OK COMM OK COMM Softwarediagnostics none statusbits Fault Reports to Series 90 70 PLC Ability to passto host no yes PLCa partial global data messageonly HostPLCScan Impact slowertransfers fastertransfers restricted maximumdata potentially more data Host PLC Program required not needed for certain configura tions DataDefault no option may default to0 Series Six Interface fixed selectable B 1 A Attenuation A 5 B Baud Rate Choosing 4 4 Conflicting causes COM to blink 1 2 Baud rate selection guidelines 2 6 4 4 Bus access A 7 baud rate 2 6 4 4 cable characteristics 2 6 cable types 2 5 electrical interface A 2 general transceiver specifications A 3 installation 2 7 length 2 6 lightning transients 2 9 noise effect on data A 7 outdoors 2 9 repeaters using A 5 serial data format A 6 surge suppression 2 9 termination 2 8 unspecified cable type using A 5 using other cable types 2 6 waveforms A 4 Bus Noise 1 2 2 2 Bus Removal 2 2 Bus Scan 3 7 Bus Scan Time 3 7 3 11 Bus Token 3 7 C Cable types 2 5 Catalog number 1 3 Catalog numbers inline HHM port 44A4736310 001 RO01 2 10 mounting plate IC660MPH509 2 12 COMM LED Blinking 1
42. lly operate without a host PLC program The GCM module cannot be installed in the same Series 90 30 PLC as a GCM module See appendix B for a comparison of the features of the GCM and GCM m The Series 90 30 Genius Bus Controller The Bus Controller can exchange up to 128 bytes of Global Data and or I O control data It can be used to interface the Series 90 30 PLC to Genius I O Blocks Remote Drops and Field Control I O Stations as well as other types of controllers A Bus Controller cannot be installed in the same Series 90 30 PLC as aGCM module 1 1 Chapter JIntyoductiDHul o 22222022220242421091 2102 0 3042 18 018 04 094 084 2 Specifications 2 0 sia sep bees iust e i eret pd pe adus Compatibility ame erresa M de EL s e ed s Chapter 2 HardwareInstallation eee Module Installation and Removal 0 cee eee eee Module Installation 0 eee Module Removal erorar oa te tie E AR Res Terminal Assembly Removal and Installation 5 0005 Bus Cable Selection riuen radiada areren m eo eoo Using Other Cable Types sees eee I Bus Length cese aeo aan and eva Neon Baud Rate Selection 00000 ge go bee nnn I Bus Installation INN ORB ee nnn nnn n Wiring Guidelines faoa W Boe eee Lightning Transient Suppression 0 00 000 c cece cece Installing a Hand held Monitor Connector 0 0000000 ee Chapter 3 Operation and Ti
43. ming ccc ccc cece eee cence Global G Memory in the Series 90 30 PLC 00 0008 How the Devices on the Bus Handle GCM Global Data Timing CO erat ON s ics einen pee eae hak Uae EEE EIQUE Y E aes Estimating Bus Scan Time 0 6 eee ee eens Relationship Between the Bus Scan and the CPU Sweep Estimating Data Response Time 6 06 eee eens p s Scan Time Tb s occa cc cad ee ap ng aer dees aww es Program Execution Time Tcpu 1 0 2 0 0 cece eee cece eee Sending Data in Reply to Global Data Received 4 Chapter 4 Configuration Kics2ccc2cacecastecerei dion giana wind ete anes GFK 0412B Configuration Planning ciis Configurable Features lle Slot NUMBERS ct Elis Ue Sa atlas Device Number rersrograb tt steniat nn Baud Rate 2c ah ase LeLi lebe t ERE E SAGAG Ra dees Ene ER Global Data Length 0 cece eee Series 90 30 Genius Communications Module User s Manual August 1997 1 1 12 12 1 3 1 3 2 1 2 1 2 1 2 2 2 3 2 5 2 6 2 6 2 6 2 7 2 9 2 9 2 10 3 1 3 2 3 4 3 7 3 7 3 8 3 11 3 11 3 11 3 11 4 1 4 1 4 2 4 3 4 3 4 4 4 5 Contents Appendix A Characteristics of the Genius Bus eee A 1 Electrical Interface eue entente anb e eee A 2 Serial Bus Waveforms ee epe bob ea an pe eda a Ee des A 4 Effect of Long Cables Repeaters or Unspecified Cable Types on Maximum Length
44. ng still attached in a protected location If exposed wiring comes in contact with conductive material data on the bus may be corrupted possibly causing the system to shut down If the rest of the bus is powered down the bus wiring can be removed from the module To remove the module 1 Locate the release lever on the bottom of the module Firmly press itup toward the module 2 While holding the module firmly at the top continue fully depressing the release lever and swing the module upward 3 Disengage the hook at the top of the module by raising the module up and moving it away from the baseplate a43056 E PRESS RELEASELEVER Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Terminal Assembly Removal and Installation The Terminal Assembly of all Series 90 30 modules can be removed or installed from the module as described below Terminal Assembly Removal 1 Open the hinged cover on the front of the module 2 There is a jacking lever above the wiring terminals on the left Push this lever upward to release the terminal block 843061 JACKING LEVER 1 3 Grasp the narrower pull tab located at the right of the retaining tab Pull the tab toward you until the contacts have separated from the module housing and the hook has disengaged PU P GFK 0412B Chapter 2 Hardware Installation 2 3 2 4 Terminal Assembly Installation To replace the
45. ns Module in the PLC configuration includes specifying 1 themodule srack slot number 2 the baud rate 3 its Device Number bus address 4 thelength of Global Data SENT by the module 5 the length of Global Data that will be received from other devices Hand held Programmer Configuration For Hand held Programmer configuration the PLC must be in Stop mode If necessary press the RUN key on the Hand Held Programmer to change the PLC mode When configured with the Hand Held Programmer the module starts operating immediately While the PLC is still in Stop mode the module transmits zeros Placing the PLC in Run mode automatically causes the module to be configured and to begin exchanging actual data with the CPU If the Hand Held Programmer is not already in configuration mode display the Programmer Mode menu by pressing the MODE key The screen shows 1 PROGRAM lt S 2 DATA The lt S in the upper right corner of the screen indicates that the PLC is in Stop mode Select module configuration by pressing the 4 key then the ENT enter key 4 2 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Slot Number A module s slot number is the location where it is or will be installed in the Series 90 30 PLC Slot 0 is always the Power Supply Hand Held Programmer Display Press the Right Arrow key from the Mode selection screen to display the configuration screens for each rack and slot F
46. nstructs the NRZ digital data Voltages between the two thresholds are ignored This filtering and the high input threshold if the comparators are highly effective in rejecting both random impulse noise and low level line reflections Finally a CRC 6 checksum check is performed before the data is sent to the local processor not shown Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Genius Transceiver Electrical Specification Property Min Max Normalpeak voltage Vp into 78 ohm terminated cable 1 3 5volts 5 5volts Normal peak voltage Vp into 150 ohm terminated cable 1 6 0volts 9 5 volts Rated bus impedance 2 78 ohms 150ohms Maximum output voltage SER 1 and 2 open 3 Peak 35 volts RMS 15 volts Maximum outputcurrent SER 1 and 2 shorted together Peak 180milliamp RMS 50milliamp Transmittersourceresistance 80 ohms 140ohms Transmitter source inductance transformer leakage inductance 10microhenries Receiver input threshold Vz Vr 4 0 7 volt 1 1 volt Receive mode input impedance 10K ohm Receive mode load inductance transformer shunt inductance 6millihenries 12millihenries Receiver common mode rejection DC to 1 MHZ 60 dB Shield capacitor termination 0 1microfarad Isolation serial bus to circuit continuous 240 volts AC GFK 0412B Notes m 1 Vp may vary among various module types m 2 Rated load is half cable
47. o use a Device Number from 16 to 23 The length of Global Data that will be received from the other device must be compatible with the Series 90 30 G memory allocation described previously GCM Sends Global Data The GCM can send Global Data to any other hosts on the bus The following table shows how other hosts handle the data Series 90 70 PLC Other CPU Places Global Data Sends Global Data To in this Memory Location Series 90 70 PLC 1 WQ G MR HAI WAQ memory if manual configura tion used or G if automatic configuration used Memory type and beginning address selected during configuration of the receiving Series 90 70 bus controller Series 90 30 PLC with GCM Module G memory location corresponding to Device Number 16 23 of Series 90 30 bus controller that sent the data Ad justs for message length Series 90 30 PLC with Bus Controller or GCM Module Configured memory location Series Six PLC or Se Register memory location that corresponds to the Device ries Five PLC Number of the Series 90 30 Genius Communications Module 16 R001 to ROO2 17 R003 to RO04 18 76 RO05 to ROV6 19 R007 to ROO8 20 ROOI to RO10 21 RO11 to 6R012 22 RO13 to RO14 23 RO15 to RO16 Adjusts for message length Computer PCIM or QBIM Input Table Segment corresponding to Device Number of sending device 3 4 Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Ad
48. ommunications Module will send more than 32 bits of Global Data one or more of the succeeding Device Numbers cannot be used by any device which will send Global Data However such a Device Number can be used by a Genius Communications Module that will receive data only or by another type of device on the bus In the following example system there are three Series 90 30 PLCs with Genius Communications Modules The PLC on the left broadcasts 32 bits of Global Data to the other two Its Genius Communications Module is assigned Device Number 16 The second PLC broadcasts 64 bits to the other two Its Device Number assignment is 17 Because the third PLC does not send any Global Data although it receives the Global Data from the others its Genius Communications Module could be assigned Device Number 18 2843392 GENIUS BUS L p lp 32 BITS 64BITS GFK 0412B Chapter 3 Operation and Timing 3 3 How the Devices on the Bus Handle GCM Global Data One Genius communications bus can serve up to 32 devices including interface modules like the GCM Genius I O blocks and Genius Hand held Monitors Any combination of these devices may be present on a bus which will be used for Global Data GCM Receives Global Data Any bus interface module that will send Global Data to the GCM must be configured t
49. or example RO 05 GCM BA18 S BUS ADDR 16 The top line of the screen indicates the baseplate RO and slot 05 selected GCM stands for Genius Communications Module Line 2 of the screen shows module s Device Number bus address Device Number GFK 0412B Each Genius communications bus can serve up to 32 devices which are identified by Device Numbers from 0 to 31 A module s Device Number is its bus address This address represents the module s place in the communications sequence on the bus Each Genius Communications Module must have a Device Number assigned As explained in chapter 3 the GCM directly associates each Device Number from 16 through 23 with 32 specific bits in Global Data G memory Device Number Associated Memory Address 16 76G001 to G032 17 G033 to G064 18 G065 to G096 19 G097 to G128 20 70G129 to G160 21 70 G161 to G192 22 G193 to G224 23 G225 to G256 The lengths of Global Data sent and or received by a device may exceed 32 bits so it is important to assign Device Numbers that accommodate the actual Global Data lengths Hand Held Programmer Configuration If the Device Number shown is not correct for this GCM enter the new number from the keypad Press the ENT key to change and display the new Device Number For example RO 05 GCM lt S BUS ADDR 17 To continue configuring the same module press the Right Arrow key to display additional selections Chapter 4 Confi
50. r a Genius Hand held Monitor Chapter 3 Operation and Timing explains how the GCM sends receives and allocates Global Data It also describes how other devices on the bus handle GCM Global Data and explains how to estimate the bus scan time contribution of the GCM Chapter 4 Configuration describes the module s selectable features and summarizes configuration steps for a Hand held Programmer Appendix A Characteristics of the Genius Bus Appendix B Comparison of the GCM and GCM Changes in This Version of the Manual This manual has been extensively revised and reorganized Major changes include 1 General information about the GCM module and Series 90 30 Genius Bus Controller has been added 2 Information on operation and timing considerations is now combined in one chapter A section on compatibility has been added Information on bus cable types has been updated and expanded Information on bus installation has been expanded 9v gu um Instructions have been added for installing an optional Genius Hand held Monitor connector 7 The module configuration chapter has been restructured to include Hand held Programmer configuration steps with enhanced parameter definitions 8 Anappendix detailing the electrical characteristics of the bus has been added 9 Another appendix comparing the GCM and GCM modules has also been added GFK 0412B Series 90 30 Genius Communications Module User s Manual August 19
51. r is less desirable spiral wound foil is least desirable 6 An outer jacket that provides appropriate protection such as water oil or chemical resistance While PVC materials can be used in many installations Teflon polyethelene or polypropylene are usually more durable 7 Electrical characteristics cable manufacturers information about pulse rise time and NRZ data rate is useful for comparing cable types The Genius bit consists of three AC pulses the equivalent NRZ bit rate is about three times as great For assistance in selecting a cable type please consult your local GE Fanuc application engineer Bus Length The maximum bus length for shielded twisted pair cable is 7500 feet Some cable types are restricted to shorter bus lengths If the application requires greater bus length fiber optics cable and modems can be used For more information see the Genius I O System and Communications Manual Baud Rate Selection The bus length determines which baud rate may be selected A Genius bus can operate at one of four baud rates 153 6 Kbaud standard 153 6 Kbaud extended 76 8 Kbaud or 38 4 Kbaud The baud rate selected should be indicated on all devices especially if different busses in the facility use different baud rates The baud rate must be configured using a Hand held Programmer or the system configuration software Note that in noisy environments 153 6 Kbaud extended provides improved noise immunity with little eff
52. r s application program is responsible for transferring Global Data between its CPU and the PCIM or OBIM I O blocks controlled by another host can be present on the bus Their operation will not interfere with Global Data transfer If a block were assigned a Device Number from 16 23 and the Genius Communications Module were configured to receive from that Device Number an amount of data equal to the number of inputs from the block the Series 90 30 PLC could monitor the input data However it could not send any outputs back to the block It is possible to use inputs only blocks on a bus with a Series 90 30 PLC monitoring input data and no other host or the Series 90 30 PLC sending outputs However a block s I O Enabled LED which reflects the presence of communications from the host would never light because the block would not receive such communications from the Series 90 30 PLC A Genius Hand held Monitor can be used to display bus status information and to display the Global Data address of the Series 90 30 PLC HHM version IC660HHM501C or later is required GFK 0412B Timing Considerations Communications on the bus occur by a method called token passing In this method the devices on the bus pass an implicit token which rotates among the devices in sequence from device 0 to device 31 Unused Device Numbers are passed with very slight delays This sequence is called a bus scan After device 31 has had its turn the scan res
53. s Each character is 11 bits long comprising a start bit always 0 next a control bit followed by 8 bits of data sent LSB first The last bit is a stop bit always 1 Successive characters are sent with no time space between them The control bit is used to signal the type of character being sent A 1 indicates a control character and 0 a data character A minimum transmission is comprised of a start character one or more data characters and a stop character The Start character data contains the address and whether the transmission is directed to a specific address or a broadcast to all The End character contains the CRC 6 checksum More complex transmissions may have additional start and end of block characters to break up the message into blocks of data not to be confused with Genius I O Blocks For example a Bus Controller can send device specific messages blocks of data to all devices on the bus during one transmission cycle Series 90 30 Genius Communications Module User s Manual August 1997 GFK 0412B Bus Access Alldevices must receive the current SBA and the stop character even though the data is irrelevant locally After the stop control character is received each device on the bus starts a timer The time delay is equal to a skip time times the difference between the device Serial Bus Address SBA and the last SBA received The device will transmit after the time delay if no other start bits are det
54. systems GE Fanuc Automation assumes no obligation of notice to holders of this document with respect to changes subsequently made GE Fanuc Automation makes no representation or warranty expressed implied or statutory with respect to and assumes no responsibility for the accuracy completeness sufficiency or usefulness of the information contained herein No warranties of merchantability or fitness for purpose shall apply The following are trademarks of GE Fanuc Automation North America Inc Alarm Master Field Control Modelmaster Series One CIMPLICITY GEnet PowerMotion SeriesSix CIMPLICITY Control Genius ProLoop Series Three CIMPLICITY PowerTRAC Genius PowerTRAC PROMACRO VuMaster CIMPLICITY 90 ADS Helpmate Series Five Workmaster CIMSTAR Logicmaster Series 90 Copyright 1990 97 GE Fanuc Automation North America Inc All Rights Reserved Preface This book describes the features installation and operation of the Series 90 30 Genius Communications Module Contents of this Manual This book contains the following chapters Chapter 1 Introduction describes the capabilities and appearance of the Genius Communications Module and lists its specifications Chapter 2 Hardware Installations explains how to install or remove a Genius Communications Module and how to remove and replace the module s Terminal Assembly This chapter also explains how to choose and install the bus cable and how to install an optional connector fo
55. tarts at device 0 a43393 RITTE IDPMIIIIIM TOKEN PATH Each device on the bus can listen to messages at all times not just when it has the token A Genius Communications Module listens to all broadcast messages These are messages that are sent to all devices on the bus Global Data is a type of broadcast message While each device holds the token it can send messages To end its turn the transmitting device sends one specific broadcast message which acts as a sign off message and the token passes to the next device Bus Scan Time depends on the baud rate the devices on the bus and the use of programmed communications and redundancy However although the presence of other devices and communications determines the speed with which the communications token advances from device to device it does not affect the actual transmission time of an individual message Estimating Bus Scan Time GFK 0412B The minimum amount of time required for the token to make a complete bus scan rotation is 3mS This minimum time limit is imposed by the Genius Communications Module and other types of bus interface modules The maximum possible bus scan time is 400mS but this will never be reached under normal circumstances If the bus includes other types of controllers or Genius I O blocks bus scan time can be estimated as described in the Genius I O System User s Manual If the bus includes only Series 90 30 PLCs with GCM modules bus scan
56. the waveform due to dispersion and resembles a frequency shift The digital input filter essentially is a band pass filter which looks at the half cycle timing Tp 2 and the duration above the thresholds Tw The limits are m Tp 2 0 6 Tp normal maximum m Tw 0 188 Tp normal minimum These measurements can be taken when evaluating the maximum length of an unspecified cable Dispersion is much less of a problem with fiber optic links since the media is much wider bandwidth and therefore has less distortion Propagation Delay The propagation delay is caused by travel time of the signal down the cable Typical signal velocity in data grade cables is around 65 78 of the speed of light This requires about 3 microseconds to travel a 2000 foot long bus This is about half a bit time at 153 6 Kb This skew could affect the bus access sequence since only one bit of quiet bus skip time is usually allocated between transmission of adjacent addresses Refer to Bus Access Time section below The signal must reach all devices on the bus within the period of one bit Propagation delay causes the ultimate limitation in bus length even with ideal media Propagation speed through fiber optic is not significantly different than wire and delays through the interfaces must be accounted for Serial Data Format A 6 The Genius protocol is designed to produce maximum throughput of data by using a minimum overhead of control and synchronizing character
57. uppressors 2 9 Z Terminal Assembly 1 2 Terminal Assembly Removal and Installa tion 2 3 Terminating the bus 2 5 V Vibration and Shock Specifications 1 3 Voltage attenuation A 5 W Wiring Errors 1 2 Wiring guidelines 2 9 GFK 0412B
58. ystem wiring installation and protect against lightning surges install a separate Genius Hand held Monitor connector on the bus Module Installation and Removal The Genius Communications Module may be installed and removed in the same manner as all other Series 90 30 modules Power must be OFF when installing or removing the module Module Installation To install the Genius Communications Module in the Series 90 30 PLC backplate 1 Grasp the module with the terminal board toward you and the rear hook facing away from you 2 Alignthe module with the desired base slot and connector Tilt the module upward so that the top rear hook on the module engages the slot on the baseplate 3 Swing the module downward until the connectors mate and the locking lever on the bottom of the module snaps into place engaging the baseplate notch a43055 Note the slot number this number must be entered when the module is configured GFK 0412B 2 1 Module Removal 2 2 The module can be removed without powering down the communications bus provided the incoming and outgoing Serial 1 wires have been connected to one terminal and the Serial 2 wires have been connected to one terminal If this has been done do not disconnect the bus cable or any terminating resistor Remove the Terminal Assembly from the front of the Genius Communications Module carefully Avoid contact with exposed cable wiring Place the Terminal Assembly with the bus wiri
Download Pdf Manuals
Related Search