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Omron C200H-LK401 User's Manual

1. Error Flags OFF for Units 2 and 5 out any changes in this example Error Tables C500 C1000H and C2000H PCs Unit 0 Unit 0 PC CPU error At startup Unit 0 down line broken or watchdog timer error Link not established Unit 1 cable problem missing or broken Unit 0 cable problem missing or broken Unit n cable problem missing or broken PCs operative for all Units Error Flag OFF for Unit 0 Error Flag ON for Unit 1 Error in data reception from Unit n Unit n down line broken or watchdog timer error Note The C200H could be replaced by the C200HS and C200HX HG HE Z with During op eration PC RUN All LEDs Flag OFF not lit link for Unit 40 broken All Error Flags OFF but that 0 LEDs LINK flashing for All but 0 Error Flags for Unit n ON LED for Unit n flashing link with Unit n broken PC RUN Flag for Unit n OFF pre vious data retained Units oth er than 0 and n At startup Link not established During op eration PC RUN Flag OFF for Unit 0 Error Flags for Unit 0 ON LED for Unit 0 flashing link broken Error Flags for Unit n ON LED for Unit n flashing previous data re tained for Unit n Error Flags for this Unit ON THIS LINK LED flashing previous data re tained for Unit n Error Flags for Un
2. jo jojon mjco nm o The following Restart Bits are turned on and then back off again to restart Special I O Units It is not necessary to turn off Unit power when its Restart Bit is used Unit number ojoon OD oO BA O N O 67 SECTION 8 Inspection and Maintenance 69 Inspection and Maintenance Section 8 PC Link Units should be inspected regularly at the same time as the PCs to which they are attached The following three areas should be given special attention Item Description Ambient conditions Temperature 0 to 55 C Humidity 3596 to 8596 Dust free Proper attachment PC Link Unit attached firmly Connectors and cables firm No breaking cables If Link Adapters are used is power supply stable and within appropriate limits If optical fiber cable is used is it kinked limit 15 mm radius bends If there is a problem follow the following steps 1 2 3 1 Always turn the power off before attaching or removing a PC Link Unit 2 If there is a poor connection dip a soft clean cotton cloth in indus trial grade alcohol and wipe the connectors with it Then remove any threads left by the cloth and reattach the PC Link Unit 3 Itis best to keep an extra PC Link Unit on hand to use as a replacement if one stops operating 4 lf aPC Link Unit does not operate properly replace it with a new one and test the new o
3. Transfer data B DB Frame ground FG o O O1 O5 I Transfer date A DA Transfer data B DB Frame ground FG oO o o o co mi Transfer date A DA Electrical and Optical Fiber Cable Frame ground FG Frame ground FG Optical fiber cable is extremely effective in eliminating malfunctions caused by noise sources near the connecting cables or by differences in the PC ground impedances It also increases the total cable length allowable in the System When optical fiber cable is used together with electrical cables wir ing is 4 conductor simplex Wire cable sections should be kept as short as possible preferably less than 10 meters each PC Link Unit LK009 V1 Link Adapter ALOO2 P Link Adapter ALOO4 P Link Adapter ALOO4 P SHON lt p INSTT lt IA e E PC Link Unit LK009 V1 Optical fiber Vd Z cable Link Adapter ALOO4 P PC Link Unit LK009 V1 39 Mounting and Connections Section 5 1 Pin connections for Systems using optical links are shown below Twist SDB with SDA RDA with RDB The shield wire is connected only at one end of each cable to prevent current flow For cables connecting a PC Link Unit to a Link Adapter connect the shield wire to FG at the PC Link Unit connector
4. Error Flag for Special I O Unit 0 Error Flag for Special I O Unit 1 Error Flag for Special I O Unit 2 Error Flag for Special I O Unit 3 Error Flag for Special I O Unit 4 Error Flag for Special I O Unit 5 Error Flag for Special I O Unit 6 Error Flag for Special I O Unit 7 CO J O OI AO IN o Error Flag for Special I O Unit 8 o o Error Flag for Special I O Unit 9 Restart Bit for Special I O Unit 0 Restart Bit for Special I O Unit 1 Restart Bit for Special I O Unit 2 Restart Bit for Special I O Unit 3 Restart Bit for Special I O Unit 4 Restart Bit for Special I O Unit 5 Restart Bit for Special I O Unit 6 Restart Bit for Special I O Unit 7 INIA AI IN o Restart Bit for Special I O Unit 8 o o Restart Bit for Special I O Unit 9 61 Error Examples Section 7 2 7 2 Error Examples Error conditions are indicated by the LEDs as described below Note Some errors in switch settings e g setting the same unit number for more than on PC Link Unit will not result in an error display but will cause LR area data to be in error MEANING ET RUN 9 8 THIS Indicates all PC Link Units in this operating level are LINKO MEN Nen exchanging data normally ERROR Indicates data exchange is not occurring with any other PC Link Unit TS RUN MEN THIS Only possible on the polling unit indi
5. Preparation completed flag for Unit 6 level 0 Preparation completed flag for Unit 7 level 0 Preparation completed flag for Unit 1 level 1 Preparation completed flag for Unit 2 level 1 Preparation completed flag for Unit 3 level 1 Preparation completed flag for Unit 4 level 1 Preparation completed flag for Unit 5 level 1 Preparation completed flag for Unit 6 level 1 Preparation completed flag for Unit 7 level 1 Programming Examples Section 6 3 LR Area Allocations C1000H PC Level 0 C500 PCs UnitOLROO amp LRO1 Unit 0 LR 00 amp LR 01 Unit 1 LR 02 amp LR 03 Unit 1 LR 02 amp LR 03 Unit 2 LR 04 amp LR 05 Unit 2 LR 04 amp LR 05 Level 0 Work bits LR 16 amp LR 31 Work bits LR 16 amp LR 31 Level 1 C500 PCs Work bits LR 00 amp LR 15 Unit O LR 16 amp LR 17 Level 1 Unit 1 LR 18 amp LR 19 Unit 2 LR 20 amp LR 21 Program PC RUN flags 24800 through 24807 and 25000 through 25007 are used in programming the PC with Units 0 They are ON when the PC is operational Units 0 Levels 0 and 1 Preparations completed flag LR 0001 LR0201 LR 0401 LR 1401 LR 3401 LR 3601 LR 4601 shinee 25001 25002 LR 0000 Unit 0 operations m started 53 Programming Examples Section 6 3 Unit 1 Level 0 Preparations completed flag ee LR 0000
6. LR Wd LR bits Unit 32 64 128 16 and 17 Unit 40 18 and 19 Unit 1 Unit 40 20 and 21 Unit 42 22 and 23 Unit 43 Unit 1 Unit 40 24 and 25 Unit 4 26 and 27 Unit 5 Unit 42 28 and 29 Unit 46 30 and 31 Unit 7 Unit 3 Unit 1 Unit 1 Data Exchange Section 3 4 3 4 Data Exchange Maximum and Minimum Polling Time Induction Sequence System control in a PC Link System is decentralized the polling unit merely handles communications among the PC Link Units A link is established be tween the polling unit and a polled unit when the polled unit confirms a sec tion of the LR area allocated to it as a write area The polling unit polls each PC Link Unit in the System or Subsystem in turn sending the most recent LR data for the other PCs in the System and receiv ing the most recent LR data from the PC Link Unit being polled Data is held in a PC Link Unit in a buffer that is updated by the PC during the PC Link servicing portion of the PC s scan When Units are polled the RUN and Error flag statuses for each Unit in the System are also updated In the following diagram T is the transmission time per PC see below Polling unit Unit 1 Unit2 hb eee ee Sees Unit n Polled unit Polled unit Polled unit Total polling time T x number of PC Link Units 10 ms If an error occ
7. Front panel DIP Switch Unit Number 30 Each PC Link Unit must be given a unit number This number will determine the LR words allocated to it The Unit assigned number 0 is the polling unit All other Units are polled units Do not use the same unit number more than once in any one Subsystem Do not set a number higher than one less than the maximum number of PC Link Units allowed in the System Remove the DIP switch cover with a screwdriver and adjust the DIP switch according to the following tables Confirm that all switches have been properly set and that the PC power is off before mounting the PC Link Unit to the PC Exam ple DIP switch settings are presented at the end of this section BBBBBBBB 123 45 67 8 Number of LR bits See page 31 zZ Z zZ Z2 2 2 2 2 2 2 Z z oloj ololojolololojlolololololojo ojojoJo 0 0 10 O Z Z Z2 2 2 2 2 zZz Z2 2 2Z C500 PC Link Units Section 4 2 Number of LR Bits The following setting is necessary only on the polling unit Unit 0 This set ting determines the number of LR bits that will be transferred via the LR area for each PC Link Unit MBBBBBBB 123 45 67 8 Ld On C1000H or C2000H PC On C500 PC Number of LR Bits Maximum PC Link Units per Subsystem Single level Multilevel LK003 mod
8. LR 00 to LR 31 LR 32 to LR 39 LR 40 to LR 47 LR 00 to LR 31 A pl LR 48 to LR 55 LR 48 to LR 55 Useable LR 56 to LR 63 as work LR 56 to LR 63 bits Note The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example Useable as work bits 15 LR Area Allocations Section 3 2 System with Three Subsystems The following example combines a C2000H PC fourteen C500 PCs and fifteen C200H PCs in a Multilevel System with three Subsystems Not all PCs are shown below missing Units are indicated by dotted lines The PC Link Unit farthest to the left in each Subsystem has been designated as the poll ing unit The C500 PCs providing the smallest LR area in their Subsystems limit the number of bits that can be transferred via the PC Link Units The LR word allocations for each PC Link Unit are given below it The shaded area is the section s of the LR area written to by the PC Link Unit s In this example data written to LR 03 by the PC with PC Link Unit 1 of the leftmost Subsystem level 0 is automatically transmitted to LR 03 in the other PCs of that Subsystem To make the data available to the middle Sub system level 1 it is necessary for the transfer PC to transfer the data from LR 03 to LR 32 or LR 33 the level 1 write words for that PC To do this the PC must be programmed with MOV LR 03 to LR 32 or LR 33 The data is then automatically transmitted to LR
9. PC Link m mt La EE d Era Notice OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual The following conventions are used to indicate and classify precautions in this manual Always heed the information provided with them Failure to heed precautions can result in injury to people or dam age to property N DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury N WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Z N Caution Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury or property damage OMRON Product References All OMRON products are capitalized in this manual The word Unit is also capitalized when it refers to an OMRON product regardless of whether or not it appears in the proper name of the product The abbreviation Ch which appears in some displays and on some OMRON products often means word and is abbreviated Wa in documentation in this sense The abbreviation PC means Programmable Controller and is not used as an abbreviation for any thing else Visual Aids The following headings appear in the left column of the manual to help you locate different types of information Note Indicates information
10. Unit 1 operations started Unit 1 Level 1 Preparations completed flag LR 1801 LR 1600 Unit 1 operations started Unit 7 Level 0 Preparations completed flag a LR 0000 Unit 7 operations started Unit 7 Level 1 Preparations completed flag Emn LR 1600 Unit 7 operations started 54 Programming Examples Section 6 3 System Configuration 2 This example is for a System with three Subsystems consisting of a C1000H PC a C2000H PC thirteen C500 PCs and a C200H PC as shown below Programming on the following pages shows the necessary steps for transfer ring data through the transfer PCs Not all PCs in the System are described A C500 PC C500 PC C500 PC C1000H PC B C2000H PC C500 PC C500 PC C500 PC C200H PC Unit 7 Unit 6 Unit 1 Unit 0 Unit O Unit 1 Unit O Unit 1 Unit 2 Unit 6 Unit 7 55 Level 0 Level 1 Level 0 95 LR Area Allocations All words below are shown with the Unit that writes to them C500 PC C500 PC C500 PC C1000H PC C2000H PC C500 PC C500 PC C500 PC C200H PC Unit 7 _ Unit 6 Uniti Uniti _ Unit2 Unit Unit7 LR 00 amp
11. msi nz Switches 5 and 6 O Used to set the type of transmission line and termination resistance RS485 e RS 485 connector Used to connect the PC Link Unit to another PC Link Unit or to a Link Adapter Display This PC Link Unit Another PC Link Unit in the System RUN Unit 0 Error indicator The LEDs indicate the following LED Function Meaning RUN Lit when PC Link Units are operating LINK 0 Lit when PC Link Unit 0 polling unit is operating properly Not lit when an error has occurred THIS Lit when this PC Link Unit is operating properly Not lit when an error has occurred OTHER Lit when other PC Link Units are operating properly Not lit when an error has occurred ERROR Light when a unit number is set incorrectly flashes when an error has occurred on the links between 0 or others and this PC Link Unit Not lit during normal operation All LEDs not lit All LEDs will go out when an error occurs in the PC 24 C200H PC Link Units Section 4 1 Back Panel DIP switch SW7 Adjusted to select Single Multilevel System operating level mode and number of 1 O refresh words Connector Used to connect the PC Link Unit to the Rack 4 1 2 Switch Settings Note Front panel Switches Switches 1 and 2 PC Link Unit Number Switch 3 Special I O Unit Number Switch settings determine how the PC Link Units will work together and how the LR area will be alloca
12. LR 00 amp UnifO LR O1 Unit O LR 01 LR 02 amp level 0 level 0 LR 02 amp LR 03 LR 03 LR 04 amp LR 05 LR 12 amp LR 12 amp LR 13 LR 13 LR 14 amp LR 14 amp LR 15 A z z LR 15 ME O Fe LR 47 Unit O level 1 SOS LR 48 to LR 63 Unit 1 level 1 Note The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example 55 Programming Examples Section 6 3 Programming Example 1 PC C Programming MOV 21 DM 0100 LR 14 Contents of DM 0100 is transferred to LR 14 and the Completed flag LR 1500 defined by the program mer is turned ON when LR 0100 written by PC A turns ON Using the above System the following programming which is started by turning ON input 0000 in PC D will move the contents of DM 0100 from PC C to DM 0000 in PC D In the table below the process starts at the right when PC D sends a START signal is sent to PC B This signal is trans ferred across the PCs to PC C at the extreme left in the table below and then the transfer of data is instigated from PC C to PC D right to left in the table below PC A Programming LR 5000 LR 0100 LR 1500 MOV 21 LR 14 LR 35 A START signal is sent to PC C when LR 5000 written by PC B turns ON When transfer of DM 0100 data has been completed at PC C the contents of LR 14 is transferred to LR 35 and the Completed flag LR 3600
13. PC with Unit 7 Input MN Minimum transmission time Program executed E L I Scan time Output 46 Response Times Section 6 1 Maximum Response Time The equation for minimum I O response time is thus as follows Response time input ON delay scan time of PC of Unit O minimum transmission time scan time of PC of Unit 7 output ON delay Inserting the following values into this equation produces a minimum I O re sponse time of 99 ms Input ON delay Output ON delay Scan time of PC of Unit O Scan time of PC of Unit 7 Minimum transmission time 1 5 ms 15 ms 20 ms 50 ms 12 5 ms for 8 Units transferring 64 bits each The following diagram illustrates the data flow that will produce the maximum response time Delays occur because signals or data is received just after they would be processed because processing cannot be finished at one time or because data is sent during processing In all cases processing must wait until the next scan polling cycle First output to the buffer in the polling unit is delayed because all of the data could not be loaded into the buffer at once The polling delay is the result of the LR data in its PC being updated immediately after the previous data was sent to the buffer in the PC Link Unit causing a delay until the next polling cycle One more polling cycle is then required before the data rea
14. To enable data transfer between PCs in an PC Link System part of the LR area is allocated as the write area for each PC in the System Which and how many LR words are allocated to each PC are determined by switch settings which are described in 4 2 2 Switch Settings This section describes the method for allocating words assuming that each PC is allocated the maxi mum number of words possible If a System contains PCs that have different sizes of LR areas only the words that are common to both areas are used in actual PC Link communi cations In the following example the LR areas of each PC are illustrated below it Words labeled work words are not used by the PC Link System and are available for use in programming if required As shown the rest of the LR area is divided with the smaller LR area of the other PC to form the write words for each C1000H CPU Rack C500 CPU Rack T A C1000H CPU C500 CPU LR 00 to LR 15 eA LR 00 to LR 15 LR 16 to LR 31 LR 16 to LR 31 LR 32 to LR 63 Work words The following example combines one C2000H PC two C500 PCs and a C200H PC in a Single level System using 128 LR bits per PC The PC Link Unit on the C2000H PC at the left end of the System has been designated as the polling unit The C500 PCs providing the smallest LR areas limit the number of bits that can be transferred via the PC Link Units Because the C500 PC has only 32 words only words 00 through 31 may be used i
15. either the connector hood if it is metal or pin 7 can be used Connector pin numbers and connector assembly are described in following subsections See Section 2 Link Adapters for information on optical fiber cables PC Link Unit connector ALOO4 P Link Adapter Pin no Signal name Pin no Signal name Transfer data B RDB Shielded twisted pair cable Receive data B RDB Send data B SDB Send data B SDB Receive data A RDA Receive data A RDA Frame ground FG Frame ground FG o Oo O1 O5 I Send date A SDA o o O1 i CG5 I o o oa Connector Pin Numbers Cable Lengths 40 Frame ground FG an o o o Frame ground FG Connector pin numbers and cable connector layout are shown below Con nector assembly is described in a following subsection Connector XM2A 0901 Housing XM2S 0911 Maker OMRON Connectors Pin no o c DS o Pin no o o 5 o So 1 is so gt 92 S a 37 30 0 g 3 2 O 4 L 9M o Toce Ue Cable shielded twisted pair cable recommended Keep the length of the connecting cable between a Link Adapter and a branched PC Link Unit to within 10 m In Systems employing optical fiber ca ble between L
16. 16 or LR 17 in the other PCs of the mid dle Subsystem To make the data available to the rightmost Subsystem level 0 itis necessary for the transfer PC to transfer the data from LR 16 or LR 17 to LR 00 or LR 01 Again the MOV instruction is utilized Because this is a Multilevel System only half of the available LR words may be used by each Subsystem the first half by the level O Subsystems the second half by the level 1 Subsystem The unused LR words in each PC may be used as work bits in programming C2000H PC Unit O level 0 C200H PC C500 PC Unit 1 Unit 1 level 0 level 1 C1000H PC Unit 1 level 0 C1000H PC Unit 7 level 0 S9 KN AN x C200H PC C500 PC Unit 15 Unit 7 level 0 level 1 Unit O Unit O level 1 level 0 Note The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example 16 LR Area Division Tables Section 3 3 C2000H PC C200H PC C200HPC Useable C500 PC Unit O Unit 1 Unit 15 levelO as worl Unit 1 level 0 level 0 Unit O level 1 bits level 1 oo LR 00 amp LR 01 LR 00 amp LR 01 LR 00 amp LR 01 Unit O LR 02 amp LR 03 LR 02 amp LR 03 LR 02 amp LR 03 level 1 1 i 1 1 LR 00 to LR 15 D
17. C2000H C500 or C500F Transmission time 35 ms max for 128 bits with 8 PC Link Units Diagnostic functions CPU watchdog timer CRC transmission error check Interface RS 485 Cable used Shielded twisted pair CO HC ESV 3P x 7 0 2 C500 LK009 V1 C200H LK401 Current consumption 0 9 A max at 5 VDC 0 25 A max at 5 VDC Weight 800 g max 400 g max 73 Backplane basic Link System branch line Branching Link Adapter buffer building block PC combined Link System common data areas Control System controlled system Converting Link Adapter CPU CPU Backplane CPU Rack Glossary A base to which Units are mounted to form a Rack Backplanes provide a series of connectors for these Units along with wiring to connect them to the CPU Backplanes also provide connectors used to connect them to other Backplanes In some Systems different Backplanes are used for different Racks in other Systems Racks differ only by the Units mounted to them A control system that includes only one of the following systems Remote I O System PC Link System Host Link System or Net Link System A communications line leading from a Link Adapter to any but the terminators in a Link System A Link Adapter used to branch connections to Units in a Link System Used either to prevent the entire System from shutting down for an interruption at only one point in the
18. DIP switches are set as follows Front panel DIP Switch BBBBEBBB Swi 6 7 8 12345 l Setting not necessary 35 Switch Setting Example Section 4 3 Back panel DIP Switch REBR SW3 12 3 4 L Multilevel System level 1 Display pattern A Termination resistance OFF Unit 2 Level 1 The transmission line selector is set to the bottom position no optical links C500 LK009 V1 The DIP switches are set as follows Front panel DIP Switch BMBBEBBBB SW1 67 8 123 45 l 64 transfer LR bits Unit 2 Back panel DIP Switch REBR SW3 12 3 4 pe Multilevel System level 1 Display pattern A Termination resistance OFF Switches 1 and 2 Unit 3 Level 1 Switch 3 is set to any number not used by another Special I O Unit Switch 4 C200H LK401 does not need to be set Switch 5 is set to the right to designate no optical links in the System Switch 6 the termination resistance is turned ON to the left The other switches are set as shown below SWi swe D S ol Isti d Unit 3 DIP Switch BEBBHEHBE Swi 123 45 67 8 l tu Normal Allocation 64 1 0 Not used turn OFF refresh bits Multilevel level 1 36 5 1 5 2 SECTION 5 System Installation Mounting and Connections ooooooooo eee eens 5 1 1 Mounting Location ese
19. Link Units Section 4 2 Display Patterns Back Panel Display Pattern A Display Pattern B LK009 V1 Unito Unit 1 m Unit2 Unit 3 r Unit4 Unit5 Unit6 Unit 7 LK009 V1 Unito This PC Link Unit r Another PC Link Unit in System The LED s indicate the following for either display pattern LED status Meaning Lit The specified PC Link Unit is operating properly Blinking An error has occurred in the specified PC Link Unit after its link to the System is established Unlit Transmission line selector SW2 Adjusted to select electrical cables or a combination of electrical and optical fiber cables 4 2 2 Switch Settings Switch settings determine how the PC Link Units will work together and how the LR area will be allocated to data communications All switches should be set before mounting a PC Link Unit to the PC Note The specified PC Link Unit is not linked to the System Y Connector Used to connect the PC Link Unit to the Rack DIP switch SW3 Adjusted to select Single Multilevel System operating level display pat tern and termina tion resistance Errors in switch settings which are not always detected by the System can cause incorrect data communications Set and check all switch settings care fully 29 C500 PC Link Units Section 4 2
20. broken Error Flags for Unit zn ON OTH ER LED not lit ER ROR LED flashing Error Flags for this Unit ON THIS LINK LED not lit ER ROR LED Error Flags for Unit zin ON OTHER LED not lit ERROR LED flashing flashing link this broken with Unit Unit Zn Atstartup Link not established During op eration LED flashing General Errors 66 Error Error Flags for Unit 40 ON LINK 0 and OTHER LEDs not lit ERROR Error Flags for Unit Zn ON LINK 0 LED not lit ERROR LED flash ing Possible cause All not lit LEDs RUN LED not lit link with Unit Zn broken Correction LED does not light PC power OFF Turn power ON PC Link Unit loose Tighten mounting screws Unit no number of transfer points settings not matched properly Reset Unit no and or number of transfer points LED does not light properly PC Link Unit display pattern set ting wrong Readjust display pattern setting Poor cable connections Check cables screws and con nectors Data not being trans ferred properly Mode selector not adjusted prop erly Check mode selector setting Same unit no set for two differ ent Units Check unit no settings Error Tables Section 7 3 Error List for Special I O Units C200H C200HS C200HX HG HE Z Error Because the C200H LK4
21. of particular interest for efficient and convenient operation of the product 1 2 3 1 Indicates lists of one sort or another such as procedures checklists etc O OMRON 1990 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means mechanical electronic photocopying recording or otherwise without the prior written permis sion of OMRON No patent liability is assumed with respect to the use of the information contained herein Moreover because OMRON is constantly striving to improve its high quality products the information contained in this manual is subject to change without notice Every precaution has been taken in the preparation of this manual Nevertheless OMRON assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the informa tion contained in this publication TABLE OF CONTENTS PRECAUTION Scoop dida 1 Intended Audience scsi ii EE REA ade 2 General Precautions cecilia a rd ds 3 Safety Precautions cecus ele vies E Es A pi 4 Operating Environment Precautions 0 0 0 eee e 5 Application Precautions 03 deeper Renee a ai a ee redu SECTION 1 Introduction 0 009 0 00 9 000 090 009 0000 00009 00090909 900909 6 6 o6 o6 I PClLmkSystems 000 tordos roles arias REG epe eg 1 2 Operating Levels and Polling ll
22. set on switch 4 If pin 8 is set for double allocation do not use the next larger number for any other PC Link Unit 27 C500 PC Link Units Section 4 2 4 2 4 2 1 28 Note LR area data will not be accurate if the next larger unit number is set on an other PC Link Unit and no error indication will be made When a PC Link Unit is set for double allocation the RUN and Error Flags for both the assigned unit number and those for the next larger unit number will operate according to the status of the PC Link Unit Pin 8 SW7 Allocation Normal ON Double LR Area for Unit n Only these words allocated normally e Unit Words for Unit n 1 C500 PC Link Units Nomenclature Switches and Indicators Words for both Unit n and Unit n 1 allocated when pin 8 is turned on The basic names and functions of PC Link Unit components are given below DIP switch cover Remove with a regular screwdriver to access the DIP switch used to set the unit number on all PC Link Units and to set the number of LR bits in the Subsystem on Unit 0 LK009 V1 RS 485 connector L Display Employed in either of two ways depending on the DIP switch setting on the back of the PC Link Unit see below E O 9000 CEO Used to connect the PC Link Unit to another PC Link Unit or to a Link Adapter C500 PC
23. the Polling Unit 77 Glossary polling polling unit printed circuit board Programmable Controller programming device Rack read word relay based control series Single level PC Link System Single link PC Link System slot Special I O Unit switching capacity system configuration 78 A method in which one element in a system monitors changes in the con tents of certain data words to maintain accurate records of the contents In a PC Link System polling is performed by the polling unit to maintain common data areas among PCs The PC Link Unit in a PC Link System that handles data transmissions to maintain common data areas within the PCs In a PC Link System the poll ing unit always shares common data areas with the polled units A board onto which electrical circuits are printed for mounting into a comput er or electrical device A computerized device that can accept inputs from external devices and gen erate outputs to external devices according to a program held in memory Programmable Controllers are used to automate control of external devices Although single unit Programmable Controllers are available building block Programmable Controllers are constructed from separate components Such Programmable Controllers are formed only when enough of these separate components are assembled to form a functional assembly i e there is no one individual Unit called a PC A peripheral device used t
24. the following values into this equation and again using the minimum transmission time produces a maximum I O re sponse time of 336 5 ms Response Times Section 6 1 PC Link polling time 30 ms Induction sequence processing time 120 ms In a Multilevel PC Link System the time required for the output may be delayed one more scan at both Unit 0 and Unit 7 This is because PC Link servicing is split into two parts in the PC scan only one of which may be serviced during any one scan depending on the time required for program execution Refer to the C1000H C2000H Operation Manual for details C200H C200HS and C200HX HG HE Z PCs Minimum Response Time The following illustrates the data flow that will produce the minimum re sponse time i e the time that results when all signals and data transmis sions are processed as soon as they occur Scan time Program executed 1 0 refresh PC with uo Y Buffer in Unit O Minimum transmission time PC Link Unit trans EZ missions Buffer in Unit 7 Program 1 O refresh y executed l PC with Unit 7 Scan time Input Output The equation for minimum l O response time is thus as follows Response time input ON delay scan time of PC of Unit 0 minimum transmission time scan time of PC of Unit 7 x 2 output ON delay Inserting the following values into t
25. unit number assigned to each PC Link Unit These numbers in turn determine which PC Link Units are polling units and which are polled units When PC Link Unit O is set for the total number of LR bits used and each of the PC Link Units is assigned a unit number the LR area is divided and as signed to each PC Link Unit automatically In a Multilevel System all PCs have their LR areas divided in half with one half being assigned to each of two Subsystems This is true regardless of whether or not the PC is actually in two Subsystems i e if only one PC Link Unit is mounted to a PC in a Multilevel System one have of the LR area is not used by the PC Link System Each PC in two Subsystems i e with two PC Link Units mounted to it thus contains all the LR area data from both Subsystems and has a write data area in assigned to each Any PC with only one PC Link Unit contains only the LR area data for the Subsystem it is in The LR area of any PC with two PC Link Units i e the data transfer PCs can thus be used to transfer data between two Subsystems by programming the data transfer PC to move data between its section of the first half and its section of the last half of its LR area See Section 6 Application Examples for specific LR area allocation ex amples for both Single level and Multilevel Systems 12 LR Area Allocations Section 3 2 3 2 LR Area Allocations LR Area Allocation in Mixed PC Systems Single level System
26. 0 m w connector 30 m w connector 40 m w connector 50 m w connector Operating temperature 10 to 70 C 3G5A2 OF011 3G5A2 OF 101 3G5A2 OF201 3G5A2 OF301 3G5A2 OF501 3G5A2 OF111 3G5A2 OF 211 3G5A2 0F311 3G5A2 0F411 3G5A2 OF511 Optical fiber cable indoor outdoor 10 to 500 m w connector order in multiples of 1 m Operating temperature 10 to 70 C 510 to 800 m w connector order in multiples of 1 m Operating temperature 0 to 55 C Do not expose to direct sunlight 3G5A2 OF002 Note Because optical fiber cable cannot be spliced as easily as ordinary cables when cut or extended be sure to order an adequate length The cable length does not include connectors 72 Item Appendix B Specifications Specification Communication method 2 conductor half duplex or 4 conductor half duplex if optical links are included Sync HDLC Transmission speed 128 kbps Transmission method Broad scanning Transmission distance 500 m total cable length in System without optical links including branch lines Possible no of PC Link Units per System PC of polling unit Single level Multilevel C200H C200HS C200HX HG HE Z C1000H or C2000H C500 or C500F Transmission LR bits No of PC Link Units PC of polling unit C200H C200HS C200HX HG HE Z C1000H or
27. 000H PCs AR bit 2411 will be ON if a level 1 PC Link Unit in a Multilevel System is mounted to the PC AR bit 2412 will be ON if a level O PC Link Unit in a Multilevel System or a PC Link Unit in a Single level System is mounted to the PC SR Area Flags Section 7 1 Special I O Unit Restart Bits Because the C200H LK401 is treated as a Special I O Unit Special I O Unit Restart Bits and Error Flags are effective for it An Error Flag turns ON when the same Special I O Unit unit number is assigned to more than one Unit or when an error has occurred in the refresh cycle between the PC and the Special I O Unit with the designated unit number This unit number is dif ferent than and set independently from the PC Link Unit s unit number When an error occurs in any Special I O Unit SR bit 25415 will also turn ON Restart Bits can be used to restart a Special I O Unit to clear an error or to change switch settings by turning the flag bit OFF and then back ON either through programming or through the Programming Console The restart op eration starts the PC Link Unit from the same initial step as if the power were just turned on and will turn ON the Error Flag for that Unit at the PC of other Special I O Units If the PC Link Unit still does not function properly turn off the power to the PC then turn it on again Error Flags and Restart Bit are refreshed every PC scan and Error Flags C200H C200HS C200HX HG HE Z w eet Function
28. 01 is treated as a Special I O Unit the following er rors Error Flags and Restart Bits are used with it Causes and status Correction Waiting for Special I O Unit start up Special I O Unit has a hardware mal function PC will not begin operation Replace the abnormal Special I O Unit with a new Unit Abnormal Unit displays only s when I O table is read Too many Special I O Units Same unit number has been assigned to more than one Special I O Unit PC will not begin operation SR bit 25415 is ON Set unit numbers so that each is used only once Unit numbers can be accessed by read ing the I O table Error in Special I O Unit Error Flags C200H C200HS C200HX HG HE Z Restart Bits C200H C200HS C200HX HG HE Z Refreshing was not normally executed between CPU and the Special I O Unit Only the abnormal Unit will stop operation SR bit 25415 is ON Obtain abnormal unit number by reading AR 0000 to AR 0009 remove the cause of the error and then restart by turning on and then off the appropriate Restart Bit AR 0100 to AR 0109 If the Unit does not recover normal operation after restarting replace it with a new one The following Error Flags will turn ON when the same unit number is as signed to more than one Special I O Unit or when the refreshing operation between the PC and the Special I O Unit is not normally executed Unit number
29. 01000 Alarm output PC B Programming LR 3200 LR 0000 LR 1500 MOV 21 LR 14 LR 48 PC D Programming MOV 21 DM 0200 LR 14 Input 0000 ON Y LR 0000 ON LR 0000 ON Y Y DM 0200 LR 14 LR 3200 ON LR 3200 ON Y l LR 0000 ON LR 0000 ON y DM 0200 LR 14 Y LR 1500 ON LR 1500 ON Y LR 14 LR 48 Y LR 1500 ON LR 1500 LR 49007 ON LR 4900 ON LR 144LR 48 Alarm output 01000 ON 97 SECTION 7 Error Processing The PC Link Units provide various means of monitoring systems operation and resolving errors when they occur These include LED indications PC RUN and Error Flags and for C200H C200HS and C200HX HG HE Z systems Special I O Unit Error Flags and Restart Bits Vel SR Area Flagss eb nee re EP e e ARD Pe PR A ache E 60 7 2 Error ExampleS sse Paws tienen torta Ra RARE PE UNODEUI PE MU OL SOY ES ERES 62 7 3 Error Tables ect n REESE IE Ce OR EH ede m 65 59 SR Area Flags Section 7 1 7 1 SR Area Flags PC RUN and Error Flags PC RUN Flags can be read to determine the operational status of each PC to which a PC Link Unit is mounted All PCs are operational when their PC RUN Flag is ON If there is a transfer error or a power failure for any PC Link Unit the Erro
30. 19 Unit 9 Unit 4 20 and 21 Unit 10 22 and 23 Unit 411 Unit 5 Unit 42 24 and 25 Unit 12 26 and 27 Unit 13 Unit 46 28 and 29 Unit 14 30 and 31 Unit 15 Unit 7 Unit 3 Unit 1 19 LR Area Division Tables Section 3 3 Level 1 C500 PCs Level 0 Level 1 20 No of PC Link Units 9to 16 5 to 8 3or4 2 LR Wd LR bits Unit 32 64 128 256 32 and 33 Unit 40 34 and 35 Unit 1 Unit 40 36 and 37 Unit 42 38 and 39 Unit 43 Unit 1 Unit 40 40 and 41 Unit 4 42 and 43 Unit 5 Unit 42 44 and 45 Unit 46 46 and 47 Unit 7 Unit 43 Unit 1 Unit 40 48 and 49 Unit 48 50 and 51 Unit 49 Unit 4 52 and 53 Unit 10 54 and 55 Unit 411 Unit 5 Unit 42 56 and 57 Unit 12 58 and 59 Unit 13 Unit 6 60 and 61 Unit 14 62 and 63 No of PC Link Units Unit 15 5108 Unit 7 3or4 Unit 43 2 LR Wd LR bits Unit 32 64 128 0 and 1 Unit 40 2 and 3 Unit 1 Unit 40 4 and 5 Unit 42 6 and 7 Unit 43 Unit 1 Unit 40 8 and 9 Unit 4 10 and 11 Unit 5 Unit 42 12 and 13 Unit 46 14 and 15 No of PC Link Units Unit 7 5108 Unit 3 3or4 Unit 1 2
31. 47 IORF 97 is executed during every PC scan for the PC Link Units The basic equation for the maximum l O response time is as fol lows Response time input ON delay scan time of PC of Unit O x number of LR transfer bits number of I O refresh bits 2 alpha PC Link scan time invitation sequence processing time scan time of PC of Unit 7 x number of LR transfer bits number of I O refresh bits 2 x 2 1 beta output ON delay If scan time of PC of Unit O gt PC Link scan time alpha scan time of PC of Unit O If scan time of PC of Unit O lt PC Link scan time alpha PC Link scan time If scan time of PC of Unit 7 gt PC Link scan time beta scan time of PC of Unit 7 If scan time of PC of Unit 7 PC Link scan time beta PC Link scan time The required data from the example System configuration is as follows Input ON delay 1 5 ms Output ON delay 15 ms Scan time of PC of Unit 0 20 ms 5 7 ms 2 25 7 required for IORF execution Scan time of PC of Unit 7 50 ms 5 7 ms 55 7 required for IORF execution Number of PC Link Units 8 Number of LR bits 1 024 Number of refresh bits for Unit O 256 Number of refresh bits for Unit 7 256 PC Link scan time 32 4 ms Invitation sequence processing time 0 ms Placing these values into the equation produces a maximum l O response time of 466 9 ms approximately 200 ms shorter than that obtained for the same l O example in 6 1 Response Times 51
32. C Link Units C200H C200HS C200HX HG HE Z C1000H or C2000H PCs No of PC Link Units 17 to 32 9 to 16 5 to 8 3or4 2 LR Wd LR bits Unit 32 64 128 256 512 0 and 1 Unit 40 2 and 3 Unit 1 Unit 0 Unit 40 4 and 5 Unit 42 6 and 7 Unit 43 Unit 1 Unit 40 8 and 9 Unit 44 10 and 11 Unit 5 Unit 2 12 and 13 Unit 46 14 and 15 Unit 47 Unit 3 Unit 40 16 and 17 Unit 48 18 and 19 Unit 49 Unit 4 Unit 2 20 and 21 Unit 10 22 and 23 Unit 411 Unit 5 Unit 1 24 and 25 Unit 12 26 and 27 Unit 13 Unit 46 Unit 43 28 and 29 Unit 14 Unit 7 17 LR Area Division Tables 18 30 and 31 Unit 15 Section 3 3 32 and 33 Unit 16 34 and 35 Unit 17 Unit 8 36 and 37 Unit 18 38 and 39 Unit 19 Unit 9 Unit 4 40 and 41 Unit 20 42 and 43 Unit 21 Unit 10 44 and 45 Unit 22 46 and 47 Unit 23 Unit 11 Unit 5 Unit 2 Unit 1 48 and 49 Unit 24 50 and 51 Unit 25 Unit 12 52 and 53 Unit 26 54 and 55 Unit 27 Unit 13 Unit 6 56 and 57 Unit 28 58 and 59 Unit 29 Unit 14 60 and 61 Unit 30 62 and 63 Unit 31 Unit 15 Unit 7 Unit 3 LR Area
33. Division Tables Section 3 3 C500 PCs Multilevel Systems If the LKO03 E is used or LK 009 E V1 is used in LKO03 mode the right most three columns of the following table can be applied No of PC Link Units 5108 5108 3or4 2 LR Wd LR bits Unit 32 64 128 256 0 and 1 Unit 40 2 and 3 Unit 1 Unit 40 4 and 5 Unit 42 6 and 7 Unit 43 Unit 1 Unit 40 8 and 9 Unit 4 10 and 11 Unit 5 Unit 42 12 and 13 Unit 46 14 and 15 Unit 7 Unit 43 Unit 1 Unit 40 16 and 17 18 and 19 20 and 21 22 and 23 24 and 25 26 and 27 28 and 29 30 and 31 Usable as work bits Unit 4 Unit 5 Unit 42 Unit 46 Unit 7 Unit 3 Unit 1 In a System with more than two Subsystems the same data applies to any Subsystems designated level 0 and those Subsystems designated level 1 C200H C200HS C200HX HG HE Z C1000H or C2000H PCs Level 0 No of PC Link Units 9 to 16 5108 3or4 2 LR Wd LR bits Unit 32 64 128 256 0 and 1 Unit 40 2 and 3 Unit 1 Unit 40 4 and 5 Unit 42 6 and 7 Unit 43 Unit 1 Unit 40 8 and 9 Unit 4 10 and 11 Unit 5 Unit 42 12 and 13 Unit 46 14 and 15 Unit 7 Unit 43 Unit 1 Unit 40 16 and 17 Unit 48 18 and
34. H C200HS C200HX HG HE Z o ooooooooo 51 6 3 Programming Examples gt nnes sss x get Re RR eA RC S e a RR e 52 45 Response Times Section 6 1 6 1 C500 PCs Note Minimum Response Time Scan time Program executed Response Times The processing that determines and the methods for calculating maximum and minimum response times from input to output are provided in this sub section The following System and l O program steps will be used in all ex amples below This System contains eight PC Link Units Although more precise equations are possible if required equations used for the following calculations do not consider fractions of a scan In looking at the following timing charts it is important to remember the se quence processing occurs during the PC scan particular that inputs will not produce programmed actions until the program has been execution unito EPA an s P Output on PC Input B Uno S LRbit Gn Output ae en ee ae Input LR XXXX LR XXXX Output Ii O II a Noise may increase l O delays The following illustrates the data flow that will produce the minimum re sponse time e the time that results when all signals and data transmis sions are processed as soon as they occur 1 0 refresh PC Link Unit servicing PC with Unit O iE Buffer in Unit O PC Link Unit transmissions Buffer in Unit 7
35. H PC Polled units LK009 V1 or C2000H LK401 on C200H C200HS or C200HX HG HE Z on C1000H LK009 V1 on C500 Max total Multilevel 16 16 16 Single level 32 32 32 Polling Unit C500 LK009 V1 PC Link Unit on C500 PC Polled units LKO009 V1 on C1000H or C2000H LK401 on C200H C200HS or C200HX HG HE Z LK009 V1 on C500 LKOOS E on C500 Max total Multilevel 8 Not possible 8 Single level 8 Not possible 8 LK003 E mode Not possible 8 Not possible Polling Unit 3G2A5 LK003 E PC Link Unit on C500 PC Polled units mode LK009 V1 on C500 in LK003 E LK003 E on C500 Max total Single level 8 8 8 Using Link Adaptors Section 2 2 2 2 Using Link Adaptors Optical Cable in PC Link Systems Handling Optical Fiber Cable 10 PC Link Unit C series PC In a PC Link System Link Adapters are used whenever more than two PC Link Units are connected in any one PC Link Subsystem They are also used to enable optical links between PC Link Units to provide greater transmission distance and greater noise resistance When using Link Adaptors refer to the Link Adaptor Installation Guide A PC Link System can be set up to take advantage of optical communica tions by using combinations of Branching and Converting Link Adapters As shown below each PC Link Unit is connected to a Converting Lin
36. ON Resistance ON Resistance OFF AS E i E 5 Resistance OFF If eight PC Link Units or fewer are employed in one Subsystem adjust the display selector for pattern A by setting this switch OFF If more than eight PC Link Units are employed in one level adjust the display selector for pat tern B by setting this switch to ON When mounting two PC Link Units to the same PC in a Multilevel System set one PC Link Unit for operating level O and the other for operating level 1 Set all other PC Link Units in each Subsystem to the same operating level In a Single level System i e a System that has no PC with two PC Link Units mounted to it designate the mode Pin combinations are as shown below Setting Single level LK009 mode Single level LK003 mode Multilevel level 1 Multilevel level O Set this selector to the top position if optical fiber cable is used to connect Link Adapters Set it to the bottom position if only electrical cable is used in the System Switch Setting Example Section 4 3 4 3 Switch Setting Example Unit 0 Level 0 C500 LK009 V1 Note Switch settings for the following System are given below for level O The set tings for all PC Link Units in level 1 would be the same except for the level setting pins 3 and 4 on the back panel DIP switches These are the normal settings but not the only ones possible The System is multilevel with two Subsystems contains eight PC Li
37. Programming Examples 6 3 Programming Examples Section 6 3 This example explains the programming required to start the entire Control System shown below only after all preparation completed flags are turned ON for both Subsystems Using the following programming any PC that is not in RUN mode will be ignored and operations will continue for the other PCs The program is designed to start the System only if none of the PCs is already running The Control System consists of 15 PCs and 16 C500 LK009 V1 PC Link Units using 32 transfer bits each Both polling units are mounted to a C1000H PC All other PC Link Units are mounted to C500 PCs in two Subsystems each consisting of seven PC Link Units C1000H PCs C500 PCs Unit O Unit O Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Level 0 C500 PCs Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Level 1 C1000H Write Bits C500 Write Bits 52 Level 0 START command bit Level 1 START command bit Preparation completed flag for Units 0 level O and level 1 Preparation completed flag for Unit 1 level 0 Preparation completed flag for Unit 2 level 0 Preparation completed flag for Unit 3 level 0 Preparation completed flag for Unit 4 level 0 Preparation completed flag for Unit 5 level 0
38. System or to enable connecting more than two Units in one System when each Unit supports only one connector A temporary storage space for data in a computerized device A PC that is constructed from individual components or building blocks With building block PCs there is no one Unit that is independently identifi able as a PC The PC is rather a functional assembly of components A control system that includes more than one of the following systems Re mote I O System PC Link System Host Link System or Net Link System LR data areas in separate PCs whose contents are kept the same Each PC writes data to certain LR area words and then transfers this data to the same LR area words in the other PCs that have a PC Link Unit connected in series with it Common data areas are created in PC Link Systems All of the hardware and software components used to control other devices A Control System includes the PC System the PC programs and all I O de vices that are used to control or obtain feedback from the controlled system The devices that are being controlled by a PC System A Link Adapter used to convert between different types of optical fiber cable different types of wire cable or between optical fiber cable and wire cable Such conversion is necessary to connect Units that use different forms of communication An acronym for central processing unit In a PC System the CPU executes the program processes l O signals comm
39. Unit Link Unit Link Adapter Link Adapter Polled PC Link Unit C series PC Polled PC Link Unit C series PC Example 3 Three level System Polled PC Link Unit C series PC Polling PC Link Unit Polling PC Link Unit C series PC lli System Configuration System Limitations Section 2 1 The maximum number of PCs that may be used in a PC Link System is lim ited by the number of LR words available This is determined by the number of levels the specific PCs employed and the mode settings on the PC Link Units A PC Link Unit must be assigned a number no greater than one less than the maximum number of allowable PCs to be acknowledge as part of the Sys tem A PC Link Unit assigned a number greater than this limit will not be ac knowledged The maximum number of Units available in a specific PC Link System is described in the following tables Only the PC Link Unit combinations shown below are possible Note particu larly that the LIKOOS3 E or LKO09 V1 in LKO03 E mode can only be used with other LKO03 E PC Link Units or LKO09 V1 in LK003 E mode Polling Unit C200H LK401 PC Link Unit on C200H C200HS or C200HX HG HE Z PC Polled units LK401 on C200H C200HS or C200HX HG HE Z LK009 V1 on C1000H LK009 V1 on C500 or C2000H Max total Multilevel 16 16 16 Single level 32 32 32 Polling Unit C500 LK009 V1 PC Link Unit on C1000H or C2000
40. abide by the following precautions could lead to serious or possibly fatal injury e Always ground the system to 100 Q or less when installing the Units Not con necting to a ground of 100 O or less may result in electric shock Always turn OFF the power supply to the PC before attempting any of the fol lowing Not turning OFF the power supply may result in malfunction or electric shock e Mounting or dismounting I O Units CPU Units Memory Units or any other Units Assembling the Units e Setting DIP switches or rotary switches e Connecting cables or wiring the system Connecting or disconnecting the connectors Failure to abide by the following precautions could lead to faulty operation of the PC or the system or could damage the PC or PC Units Always heed these pre cautions e Fail safe measures must be taken by the customer to ensure safety in the event of incorrect missing or abnormal signals caused by broken signal lines momentary power interruptions or other causes xiii Safety Precautions 5 e Always use the power supply voltages specified in this manual An incorrect voltage may result in malfunction or burning e Take appropriate measures to ensure that the specified power with the rated voltage and frequency is supplied Be particularly careful in places where the power supply is unstable An incorrect power supply may result in malfunction e Install external breakers and take other safety me
41. ach section in its entirety and be sure you understand the information provided in the section and related sections before attempting any of the procedures or operations given ix PRECAUTIONS This section provides general precautions for using the Programmable Controller PC and related devices The information contained in this section is important for the safe and reliable application of the PC You must read this section and understand the information contained before attempting to set up or operate a PC system 1 Intended Audience ooo xii 2 General Precautions 20 toi oi ea elas xii 3 Safety Precautions onsec I Wer AS E E a E M EVI S E e ETE xii 4 Operating Environment Precautions 0 0 0 eee I xiii xiii 5 Application Precautions Safety Precautions 1 2 3 xii Intended Audience This manual is intended for the following personnel who must also have knowl edge of electrical systems an electrical engineer or the equivalent Personnel in charge of installing FA systems Personnel in charge of designing FA systems Personnel in charge of managing FA systems and facilities General Precautions N WARNING The user must operate the product according to the performance specifications described in the operation manuals Before using the product under conditions which are not described in the manual or applying the product to nuclear control systems railroad systems aviation syst
42. ada Seas eee OR QUEE RE Ed WON tia aia Woes are ee Red carat ee Ged ec we ew a Revision History i603 04 obs see ek ve es s XI xii xii xii xiii xiii NN u 71 73 75 81 83 vii About this Manual A PC Link System enables use of the LR Link Relay data area as a common data area shared by all PCs in the PC Link System thus simplifying programming settings and data exchange between PCs and per mitting effective use of inputs and outputs This manual has been written to provide the information necessary to design and install a single level or multilevel PC Link System using PC Link Units with C500 C500F C1000H C2000 C2000H C200H C200HS and or C200HX HG HE Z PCs Before attempting to design install or operate a PC Link Sys tem be sure to thoroughly familiarize yourself with the information contained herein During operation refer to the relevant PC Programming Manuals for programming and control system details Section 1 introduces PC Link Systems and describes their advantages and characteristics It also describes the improvements made in the most recent version Section 2 describes the elements that go together to construct a PC Link System and the factors re quired to design a System Section 3 describes the LR area used in data transfer between the PCs the method used to allocate it to the PCs and the polling process used to actually transfer data Section 4 provides details on PC Link Units the main U
43. apters Switch 6 Termination Resistance Set switch 6 to the left to connect turn ON termination resistance 220 Q and to the right to disconnect turn OFF termination resistance The termina tion resistance must be turned ON in the first and last PC Link Units in each Subsystem Switch 7 Back panel DIP Switch Pins 5 through 7 are not used and must be set to OFF The rest of the pins are set as described below Pins 1 and 2 l O Refresh Bits This setting determines the number of LR bits refreshed during each PC scan The number set here must be equal to or greater than the number of LR bits transferred per PC set on switch 4 Reducing the number of bits refreshed will shorten the PC scan time but it will increase the transmission time in the PC Link System These relation ships are shown in the following tables along with pin settings No of refresh bits Increase in scan time 512 8 9 ms 256 5 7 ms 128 3 6 ms 64 2 8 ms 26 C200H PC Link Units Section 4 1 Note Pins 3 and 4 Levels Note Pins 8 Double Allocation Setting The following table shows the number of scans of delay in communication produced by various numbers of refresh bits and LR bits The delays given are for Single level Systems Delays in Multilevel Systems would be half of those shown below No of re fresh bits The IORF 97 instruction can be used in programming to ref
44. asures against short circuit ing in external wiring Insufficient safety measures against short circuiting may result in burning Do not apply voltages to the Input Units in excess of the rated input voltage Excess voltages may result in burning Do not apply voltages or connect loads to the Output Units in excess of the maximum switching capacity Excess voltage or loads may result in burning Disconnect the functional ground terminal when performing withstand voltage tests Not disconnecting the functional ground terminal may result in burning e Be sure that all the mounting screws terminal screws and cable connector screws are tightened to the torque specified in this manual Incorrect tighten ing torque may result in malfunction e Leave the label attached to the Unit when wiring Removing the label may re sult in malfunction if foreign matter enters the Unit e Remove the label after the completion of wiring to ensure proper heat dissipa tion Leaving the label attached may result in malfunction Double check all wiring and switch settings before turning ON the power sup ply Incorrect wiring may result in burning Wire correctly Incorrect wiring may result in burning Mount Units only after checking terminal blocks and connectors completely Be sure that the terminal blocks Memory Units expansion cables and other items with locking devices are properly locked into place Improper locking may result in ma
45. cable or a combination of electrical and optical fiber cable Connectors are provided with the PC Link Units and the Link Adapters All cable must be purchases separately Shielded twisted pair cable is recom mended Note that RS 485 interfaces connectors are used for the PC Link Units but RS 422 interfaces connectors are used for Link Adapters Electrical Cable Only When only electrical cables are used wiring is 2 conductor half duplex and should be shielded twisted pair cable PC Link Unit PC Link Unit LKOO9 V1 LK009 V1 Link Adapter AL001 E PC link Unit LK009 V1 38 Mounting and Connections Section 5 1 Pin connections for Systems not using optical links are shown below Twist DB and DA together The shield wire is connected only at one end of each cable to prevent current flow For cables connecting a PC Link Unit to a Link Adapter connect the shield wire to FG at the PC Link Unit connector either the connector hood if it is metal or pin 7 can be used For cables connect ing two Link Adapters connect the shield wire to pin 7 at either Link Adapter connector but not at both Connector pin numbers and connector assembly are described in following subsections PC Link Unit connector or ALO001 Link Adapter Pin no Signal name Shielded twisted pair cable ALO001 Link Adapter Pin no Signal name
46. cal links C500 LK009 V1 The DIP switches are set as follows Front panel DIP Switch BBBEBBBB swi 1234567 8 l 64 transfer LR bits Unit 2 Back panel DIP Switch BABE SW3 123 4 d Multilevel System level O Display pattern A Termination resistance OFF Switches 1 and 2 34 Switch Setting Example Section 4 3 Unit 3 Level 0 Switch 3 is set to any number not used by another Special I O Unit Switch 4 C200H LK401 does not need to be set Switch 5 is set to the right to designate no optical links in the System Switch 6 the termination resistance is turned ON to the left The other switches are set as shown below Swi SW2 0 3 Unit 3 DIP Switch BBHEBEBB swt 1234567 8 LI Normal Allocation 64 VO Not used turn OFF refresh bits Multilevel level 0 Unit 0 Level 1 The transmission line selector is set to the bottom position no optical links C500 LK009 V1 The DIP switches are set as follows Front panel DIP Switch ial Swi 6 7 8 12345 l 64 transfer LR bits Unit 0 Back panel DIP Switch SW3 12 3 4 L Multilevel System level 1 Display pattern A Termination resistance ON Unit 1 Level 1 The transmission line selector is set to the bottom position no optical links C500 LK009 V1 The
47. cates that none of LINKO 9 OTHER the PC Link Units are capable of data exchange ERROR ET RUN THIS Indicates an error exists in another PC Link Unit that is LINKO OTHER not the polling unit P ERROR Lkaor RUN THIS Indicates an error exists between this Unit and the polling LINK O OTHER unit P ERROR THIS Indicates setting of PC Link Unit numbers is wrong OTHER ERROR Note Open circles indicate lit LEDs Half back circles indicate flashing LEDs 62 Error Examples Section 7 2 System Configuration This example will describe error indications on all PC Link Units using the following System configuration Transmission line breaks will be described at two different points A and B Unit 3 has been set for double allocation and thus is allocated the LR bits and flags from both Unit 3 and Unit 4 Double allocation C2000H PC C500 PC C500 PC C200H PC C200H PC Unit O Unit 1 Unit 2 Unit 3 Unit 5 polling unit r B A Note Break at Point A Unit 0 C2000H PC Display pattern A Units 1 and 2 C500 PC Display pattern A Units 3 and 5 C200H PC The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example Because Unit O receives no response from Units 1 2 3 and 5 it indicates an error for all of them Becaus
48. ch it belongs Although all the PCs in the same Subsystem automatically have data written into their LR areas from the PCs in the same Subsystem this is not the case with PCs in different Subsystems A PC that belongs to two Subsystems can however transfer data between Subsystems by reading it from any part of the LR words it shares with one of the Subsystems and writing the data to the words allocated it in the other Subsystem This transfer operation is pro grammed by the user in the normal user program The total length of wire cable e g RS 485 or RS 422 must not exceed 500 m Individual branch lines from Link Adapters to PC Link Units must not ex ceed 10 m Greater transmission distances can be achieved by using optical links between PC Link Units see Section 2 Link Adapters The following examples demonstrate some of the ways that PCs can be con nected in PC Link Systems Example 3 also provides the appearance two of the CPU Racks in the System An example of a PC Link System designed using optical links is provided in 2 2 Using Link Adapters System Configuration Section 2 1 Example 1 Single level System C series PC Polled PC Link Unit Polled PC Link Unit Polled PC Link Unit Polling PC Link Unit Link Adaptor Polled PC Link Unit C series PC Polled PC Link Unit C series PC Example 2 Two level System C series PC C series PC Polled PC Polling PC Link
49. ches the buffer in PC Link Unit 7 Output to buffer not completed 1 0 refresh Scan time PC Link Unit servicing PC with Unit 0 D Buffer in PC Link polling time Unit 0 Polling delay r i i Induction sequence PC Link processing time Unit trans missions 2 Maximum 1 O refresh Transmis i PC Link Buffer in alerta C Link Unit servicing Unit 7 PC with A Unit 7 Xx Scan time Input Output 47 Response Times Section 6 1 C1000H and C2000H PCs Minimum Response Time Maximum Response Time PC with Unit O Buffer in Unit 0 PC Link Unit trans missions Buffer in Unit 7 PC with Unit 7 Input Output 48 The equation for maximum I O response time is as follows Response time input ON delay scan time of PC of Unit O x 3 PC Link polling time x 2 induction sequence processing time scan time of PC of Unit 7 x 2 output ON delay Inserting the same values plus the following values into this equation pro duces a maximum l O response time of 236 5 ms PC Link polling time 30 ms Induction sequence processing time 0 ms Although the scan for C1000H and C2000H PCs is slightly different from that for the C500 PC the data flow that produces the minimum response time between input and output and the equation for computing it are the same as t
50. cial I O Unit Restart Bits and Error Flags 60 specifications 70 standard Omron products for PC Link Systems 71 Subsystems PC Link 2 3 switch settings 10 example 27 LK009 25 29 LK401 32 switches 24 28 system configuration 6 T termination resistance LKO009 31 setting on LK401 26 transfer PC 7 transferring data 12 transfer PCs in PC Link System 7 transmission delay LK401 26 transmission distance 7 Transmission line selector LK009 29 transmission line selector setting LK009 32 LK401 26 transmission time 21 troubleshooting 59 U unit number word allocation in PC Link System 13 14 unit numbers determining 9 setting LK009 28 W wiring See connections 38 work words PC Link System 14 Revision History A manual revision code appears as a suffix to the catalog number on the front cover of the manual Cat No W135 E1 3 Revision code The following table outlines the changes made to the manual during each revision Page references are to the previous version of the manual Revision code Date Revised content 1 Les Original production 2 July 1990 Complete reorganization and rewrite Correction to switch 5 setting on p 24 Connector model added to Appendix A July 1994 Address change May 1996 Section of precautions added before section 1 and adjustments made to signal words for precautions Page ix Introduction to About th
51. connector AGF 2 connectors Cables and Connectors Cable to connect PC Link Units to each other or to Link Adapters must be purchased by the user OMRON does not supply it The following cable is recommended The Connector is produced by OMRON Cable CO HC ESV 3P x 7 0 2 Connector XM2A 0901 Housing XM2S 0911 Maker OMRON All Plastic Optical Fiber Cable Model numbers with the suffix P can be connected to up to 20 m of APF cable Product 3G2A9 AL006 E Specifications Model number Plastic optical fiber cable Cable only w o connector B500 PF002 Order in multiples of 5 m from 5 to 100 m or in lengths of 200 m or 500 m Optical connector A W 2 optical connectors brown 3G5A2 CO001 For plastic optical fiber cable 10 m long or shorter Optical connector B W 2 optical connectors black 3G5A2 CO002 For plastic optical fiber cable 8 to 20 m long Plastic optical fiber set 1 m cable with connector A attached to both ends 3G5A2 PF101 Optical connector puller Purchase separately 71 Standard Models Appendix A Plastic clad Optical Fiber Cable Model numbers with the suffix P can be connected to up to 200 m of PCF cable Product Description Model number Optical fiber cable indoor 1 m w connector 1 m w connector 2 m w connector 3 m w connector 5 m w connector 10 m w connector 2
52. d to the CPU Rack in certain PCs to monitor and control I O points on Expansion I O Units The devices to which terminals on I O Units Special I O Units or Intelligent I O Units are connected I O devices may be either part of the Control Sys tem if they function to help control other devices or they may be part of the controlled system A Unit mounted to an Expansion I O Rack in certain PCs to interface the Ex pansion I O Rack to the CPU Rack The place at which an input signal enters the PC System or an output signal leaves the PC System In physical terms an I O point corresponds to termi nals or connector pins on a Unit in terms of programming an I O point corre sponds to an I O bit in the IR area The most basic type of Unit mounted to a backplane to create a Rack I O Units include Input Units and Output Units each of which is available in a range of specifications I O Units do not include Special I O Units Link Units etc An interface is the conceptual boundary between systems or devices and usually involves changes in the way the communicated data is represented Interface devices such a NSBs in Net Link Systems perform operations such as changing the coding format or speed of the data A Unit used to connect communications lines either to branch the lines or to convert between different types of cable There are two types of Link Adapter Branching Link Adapters and Converting Link Adapters A hardware or softwa
53. e Single level Multilevel 32 32 32 16 256 2 32 8 64 16 64 8 128 4 64 8 128 8 128 4 64 8 128 4 256 4 256 2 256 2 512 2 Setting unavailable Setting unavailable Back panel DIP Switch The back panel DIP switch is a 4 pin switch as shown below Set each of the pins as described BEBE 12 3 4 31 C500 PC Link Units Section 4 2 Pin 1 Termination Resistance Pin 2 Display Pattern Pins 3 and 4 Levels and Modes Switch 2 Transmission Line Selector 32 To operate properly the PC Link Unit at each end of the main line of each Subsystem must have the termination resistance switch turned ON and all PC Link Units that branch off the main line must be turned OFF An example is provided below Each large box represents one or two PC Link Units mounted to a C series PC each small box a Link Adapter The different lines represent different Subsystems Resistance ON Resistance OFF Resistance ON 55 Resistance OFF r Resistance ON gom Resistance ON Resistance OFF NDS TERRE g ERA Resistance OFF r Resistance ON Resistance ON Resistance OFF l Ss J Resistance OFF Resistance
54. e Optical System can handle only one or two words Third I O Links use programmed input and output operations to trans fer data whereas PC Link Systems use an automatic polling method PC Link Systems access only the LR area of the PC for data exchange and do not require the use of any of the PCs I O points Settings on the PC Link Units allow for data exchange little or no program ming required Two PC Link Subsystems operating at different levels can exchange data via the LR area of a PC operating in both Subsystems The C500 LK009 V1 differs from the 3G2A5 LK009 in insulation of the trans mission section from the internal circuits to improve anti noise performance This increased performance reduces noise interfere originating in ground dif ferences cable inductance etc The C500 LK009 V1 can also be used to gether with the C200H LK401 This is not possible with the 3G2A5 LK009 Although not covered in detail in this manual the LKO03 E PC Link Unit can be used in PC Link Systems together with the LK009 V1 PC Link Unit If the LK003 E is used the PC Link System must be single level and all LKO09 V1 PC Link Units in the System must be set to LK003 E mode The LKOOS E or an LK009 V1 in LKOO3 E mode can be used only on C500 PCs and cannot be used in the same PC Link System as a C200H LK401 PC Link Unit 1 2 Operating Levels and Polling All PC Link Units are assigned unit numbers which determine what part of the LR area each i
55. e Units 1 2 3 and 5 receive no polling signal from Unit 0 they each indicate an error for it LED indications are shown be low as well as the conditions of the PC RUN and Error Flags in the SR area Display pattern B LINKO THIS LINK OTHER X O RUN ERROR Display pattern B LINKO X THIS LINK OTHER O RUN ERROR Allocated to Unit 3 JU LA Bit 15 Word 250 0 0 1 Error Flags ON for Units 1 to 5 PCs operative for all Units Error Flag OFF for Unit O Allocated to Unit 3 Bit 15 J Bit 0 Word62 0 0 0 00 OJO 1 0JO 1 1 1 1 1 1 It Error Flags OFF for Units 1 to 5 Ju LA PCs operative for all Units Error Flag ON for Unit 0 SA LA THIS Allocated to Unit 3 Bit 15 J Bit 0 Word 250 0 0 0 0 000 1 0 0 111 1 1 1 OTHER Y ERROR T Error Flags OFF for Units 1 to 5 PCs operative for all Units Error Flag ON for Unit 0 63 Error Examples Section 7 2 Break at Point B Unit 0 C2000H PC Display pattern A Unit 1 C500 PC Display pattern A Unit 2 C500 PC Display pattern A 64 Because Unit O receives no response from Unit 1 only it indicates an error for it and normal conditions for Units 2 and 3 Si
56. eeeeee cece eee 3 1 2 CoDDeCtUOnDS s vu desks ux esee ime cst apt cea cones box Wee e cte Rs Dimensions 38 38 38 42 37 Mounting and Connections Section 5 1 5 1 Mounting and Connections 5 1 1 Mounting Location C2000H Simplex System The PC Link Unit may be mounted to any of the slots on the C2000H CPU Rack C2000H Duplex System The PC Link Unit may be mounted to any of the six slots on the Power Sup ply side right side of the I O Rack connected to the CPU Rack C500 or C1000H System On C500 BC082 or C500 BC052 Racks the PC Link Unit may be mounted to any of the five slots on the CPU side right side of the CPU Rack On C500 BC081 or C500 BC051 Racks the PC Link Unit may be mounted to any of the three slots on the CPU side right side of the CPU Rack C200H C200HS or The PC Link Unit can be mounted to any slot on the CPU Rack or an Expan C200HX HG HE Z System sion I O Rack connected under the CPU Rack except for the two rightmost slots on the CPU Rack those closest to the CPU The PC Link Unit cannot be mounted to a Slave Rack a Rack that contains a Remote I O Slave Unit or to an Expansion l O Rack controlled through a Slave Rack 5 1 2 Connections Although connections made directly to the PC Link Units are generally shielded twisted pair cable the PC Link System can also contain optical links between the Link Adapters see 2 2 Using Link Adapters for details The System is thus either all electrical
57. ems vehicles combustion systems medical equipment amusement machines safety equipment and other systems machines and equipment that may have a serious influence on lives and property if used improperly consult your OMRON representative Make sure that the ratings and performance characteristics of the product are sufficient for the systems machines and equipment and be sure to provide the systems machines and equipment with double safety mechanisms This manual provides information for programming and operating OMRON PCs Be sure to read this manual before attempting to use the software and keep this manual close at hand for reference during operation It is extreme important that a PC and all PC Units be used for the specified purpose and under the specified conditions especially in applications that can directly or indirectly affect human life You must consult with your OMRON representative before applying a PC System to the abovementioned applications Safety Precautions N WARNING N WARNING N WARNING Do not attempt to take any Unit apart while the power is being supplied Doing so may result in electric shock Do not touch any of the terminals or terminal blocks while the power is being supplied Doing so may result in electric shock Do not attempt to disassemble repair or modify any Units Any attempt to do so may result in malfunction fire or electric shock Application Precautions 4 Operatin
58. erting Link Adapters Specified because the System otherwise uses wire communi cations A communications method in which signals are sent over optical fiber cable to prevent noise interference and increase transmission distance Cable made from light conducting filaments used to transmit signals An acronym for Programmable Controller All of the PCs that share the same part of the LR are in a PC Link System PC Link Subsystems exist within a PC Link System when one or more of the PCs in the System has two PC Link Units mounted to it If Subsystems exist the System is considered a Multilevel PC Link System A System in which PCs are connected through PC Link Units to enable them to share common data areas i e each of the PCs writes to certain words in the LR area and receives the data of the words written by all other PC Link Units connected in series with it The Unit used to connect PCs in a PC Link System With building block PCs all of the Racks and independent Units connected directly to them up to but not including the I O devices The limits of the PC System on the upper end is the PC and the program in its CPU and on the lower end I O Units Special I O Units Optical I O Units Remote Terminals etc Devices connected to a PC System to aid in system operation Peripheral devices include printers programming devices external storage media etc Any of the Units in a PC Lin system that share common data areas except for
59. g Environment Precautions N Caution N Caution N Caution Do not operate the control system in the following locations e Locations subject to direct sunlight e Locations subject to temperatures or humidity outside the range specified in the specifications e Locations subject to condensation as the result of severe changes in tempera ture e Locations subject to corrosive or flammable gases e Locations subject to dust especially iron dust or salts e Locations subject to exposure to water oil or chemicals e Locations subject to shock or vibration Take appropriate and sufficient countermeasures when installing systems in the following locations Locations subject to static electricity or other forms of noise e Locations subject to strong electromagnetic fields Locations subject to possible exposure to radioactivity Locations close to power supplies The operating environment of the PC system can have a large effect on the lon gevity and reliability of the system Improper operating environments can lead to malfunction failure and other unforeseeable problems with the PC system Be sure that the operating environment is within the specified conditions at installa tion and remains within the specified conditions during the life of the system 5 Application Precautions N WARNING N Caution Observe the following precautions when using the PC system Always heed these precautions Failure to
60. his equation produces a minimum I O re sponse time of 149 3 ms Input ON delay 1 5 ms Output ON delay 15 ms Scan time for PC of Unit 0 20 ms Scan time for PC of Unit 7 50 ms 49 Section 6 1 Response Times Maximum Response Time Scan time The following diagram illustrates the data flow that will produce the maximum response time Delays occur because signals or data is received just after they would be processed or because data is sent during processing In either case processing must wait until the next scan polling cycle First output to the buffer in the polling unit is delayed by the setting of the number of LR bits to be refreshed each scan A similar delay is present when the LR data reaches Unit 7 The polling delay is the result of the LR data in its PC being updated immediately after the previous was sent to the buffer in the PC Link Unit cause a delay until the next polling cycle One more polling cycle is then required before the data reaches the buffer in PC Link Unit 7 1 O refresh PC with Unit 0 Buffer in Unit O PC Link Unit transmissions Buffer in Unit 7 Jm PC Link polling time Polling delay Induction sequence j S processing time Al Maximum transmission NE n PC with Unit 7 Scan time Input Output 50 The equatio
61. hose shown for C500 PCs Using the minimum transmission time of 12 5 ms in the equation produces a minimum l O response time of 99 ms The following diagram illustrates the data flow that will produce the maximum response time for a Single level PC Link System Delays occur because sig nals or data is received just after they would be processed or because data is sent during processing In either case processing must wait until the next scan polling cycle The polling delay is the result of the LR data in its PC being updated immedi ately after the previous was sent to the buffer in the PC Link Unit cause a delay until the next polling cycle One more polling cycle is then required be fore the data reaches the buffer in PC Link Unit 7 Output refresh Scan time Al Link Unit servicing y Polling PC Link delay polling time Input re FTF induct freshed F nduction sequence processing time Program Maximum Output refresh executed transmission PC Link Unit time i y servicing E M E E A Program executed Scan time The equation for maximum l O response time is thus as follows Response time input ON delay scan time of PC of Unit 0 x 2 PC Link polling time x 2 induction sequence processing time scan time of PC of Unit 7 x 2 output ON delay Inserting the same values plus
62. ing 0 cee III 2 Operating Levels and Polling Section 1 2 1 1 PC Link Systems Compared with I O Links Effective I O Utilization Simplified System Setup Subsystem Data Exchange LK009 V1 Improvements LK003 E PC Link Units A PC Link System is established to interconnect two or more C series PCs through PC Link Units to allow data transfer through the LR area of each PC PC Link Subsystems can be established within the PC Link System creating different levels of operation Each PC in the PC Link System automatically exchanges data with all the PCs in the same Subsystem Any PC in two Sub systems i e any PC to which two PC Link Units are mounted can be used as a transfer PC to transfer data between two PC Link Subsystems The data communications provided by PC Link Systems allow use of the in puts and outputs on all of the PCs in the System in the program of any PC PC Link Systems do not establish hierarchies of control between PCs i e all control actions must be written in the programs of individual PCs PC Link Systems exchange data differently to 1 O Links in Optical Remote l O Systems in three main ways First an I O Link requires the use of I O points reducing the number of I O points available to connect to I O devices Sec ond the number of bits transferred between PCs in a PC Link System is lim ited only by the size of the LR area and the number of PCs in the PC Link System an l O Link in a Remot
63. ink Adapter the lengths of electrical cable should be made as short as possible to take full advantage of the properties of the optical links If only electrical cable is used the total length of all the cables on both main and branch lines must not exceed 500 m Mounting and Connections Wiring Cables Preparing to Connect Shield Wire to FG 1 2 3 Preparing for No Shield Wire Connection to FG 1 2 3 Section 5 1 Use the following procedure to wire connectors Refer to the following diagrams as necessary Cut the cable to the required length Being careful not to damage the braiding underneath use a razor blade to cut away 25 mm of sheath Using scissors cut away all but 10 mm of the exposed shield wire braid ing Using wire strippers remove the covering from the last 5 mm of all wires Fold the braiding back over the end of the sheath Wrap aluminum foil tape 1 1 2 turns over top of the braiding on top of the sheath Aluminum foil tape Refer to the following diagrams as necessary Cut the cable to the required length Being careful not to damage the braiding underneath use a razor blade to cut away 25 mm of sheath Using scissors cut away all of the exposed shield wire braiding Using wire strippers remove the covering from the last 5 mm of all wires Wrap electrician s tape over top of the end of the cut sheath Electrician s tape 41 Dimensi
64. is turned ON PC B Programming LR 1400 LR 5000 LR 3600 MOV 21 LR 35 LR 01 A START signal is sent to PC A when LR 1400 written by PC D turns ON When transfer of LR 14 data to LR 35 has been completed at PC A the contents of LR 35 is transferred to LR 01 and the Completed flag LR 0015 is turned ON PC D Programming Start input 0000 LR 1400 LR 0015 MOV 21 LR 01 DM 0000 A START signal is sent to PC B when input 0000 turns ON When transfer of LR 35 data to LR 01 has been com pleted at PC B the contents of LR 01 is transferred to DM 0000 0000 ON LR 1400 ON LR 1400 ON y LR 5000 ON LR 5000 ON LR 0100 ON LR 0100 ON Y DM 0100 gt LR 14 Y LR 1500 ON LR 1500 ON 56 Y LR 14 LR 35 Y LR 3600 ON LR 3600 ON y LR 35 LR 01 Y LR 0015 ON LR 0015 ON LR 01 DM 000 Programming Examples Programming Example 2 PC C Programming MOV 21 DM 0200 LR 14 Section 6 3 Using the above System the following programming which is started by start input 0000 in PC A will compare the contents of DM 0200 in PCs C and D and output an alarm signal if the contents differ PC A Programming Start input 00000 LR 0000 LR 1500 LR 4900 Equal flags 25506 4
65. is Manual rewritten Page 42 Connector Pin Numbers section rewritten Page 71 Cables and Connectors table corrected March 2000 Restart Flag globally corrected to Restart Bit C200HS and C200HX HG HE Z PCs added 83
66. it Zn ON LED for Unit Zn flashing previous data re tained for Unit n PC RUN Flag for Unit n OFF pre vious data retained Unit Zn At startup Link not established During op eration PC RUN Flag OFF for Unit 0 previous data re tained for Unit 0 Error Flags for Unit 0 ON LED for Unit 0 flashing link broken Error Flags for Unit 0 ON LED for Unit 0 flashing previous data re tained for Unit 0 All not lit LEDs 65 Error Tables Section 7 3 C200H C200HS and C200HX HG HE Z PCs Unit 0 Unit 0 PC CPU error At startup Unit 0 Special 1 O Unit error Unit 1 cable problem missing or broken Link not established Unit 0 cable problem missing or broken Unit n cable problem missing or broken Error in data reception from Unit iin Unit Zn PC CPU error Unit Zn Special 1 O Unit error During op eration All LEDs not lit link broken SR bit 25415 ON RUN LED not lit link broken All Error Flags OFF but that for 0 OTH ER LED not lit ER ROR LED flashing error for all polled Units Error Flags for Unit n ON OTHER LED not lit ER ROR LED flashing link with Unit n broken Units oth er than 0 and n At startup Link not established During op eration Error Flags for Unit 0 ON LED not lit ERROR LED flashing link
67. j D D t j t t E i i i i LR 16 amp LR 17 i i LR 188 LR 19 1 1 1 1 P 1 T T D D 1 t 1 1 1 1 p 1 t j t t t D 1 1 1 1 ds 1 UnitiS Asoatna1 LR308 amp LR31 R30 amp LR31 LRSOE LASA level 0 d Ws LR32 amp LR33 4 1 t LR34 amp LR35 E hn i j LR 32 to LR 32 to LEAD LR t LR 63 LR 63 LR 48 to LR 63 Useable as work bits 3 3 Single level Systems LR Area Division Tables Unit 0 level 0 Unit 1 level O Unit 7 level O C500 PC C1000H PC C1000H PC Unit 7 level 1 Unit 1 Unit 7 Unit 0 level 0 level 0 level 0 LR 00 amp LR 01 LR 00 amp LR 01 LR 00 amp LR 01 LR 02 amp LR 03 LR 02 amp LR 03 LR 02 amp LR 03 i i i t 1 1 I 1 i 1 i 1 D D I 1 LR 148 LR 15 LR 148 LR 15 LR 14 amp LR 15 LR 16 amp LR 17 T i LR ieatR 19 i LR 16 to LR 16 to i LR 31 LR 31 LR 30 amp LR 31 LR 2 to LR 2 to LR 63 LR 63 Useable as work bits The PC Link Unit has the ability to transfer from 2 to 32 words 32 to 512 bits of data between PCs The LR area is divided according to the number of PC Link Units and the number of Subsystems in the System Refer to the appropriate table for your System Any unused portion of the LR area may be used as work bits The number of LR bits transferred per Unit and Single le vel Multilevel designation are made on switches on the P
68. k Adapter that converts to optical communications Optical fiber cable is then used to form the main line and branch lines that connect each PC Link Unit Convert ing Link Adapter pair The straight lines in the following diagram represent wire cables those with zig zags in them optical fiber cable In the following example any of the PC Link Units may be set as the polling unit AL004 Link AL002 Link AL002 Link ALO04 Link Adapter Adapter Adapter Adapter PC Link Unit Optical fiber AL004 Link Adapter AL004 Link Adapter PC Link Unit PC Link Unit C series PC Although special characteristics of optical fibers call for care in connecting optical devices laying optical fiber cable basically does not differ from laying wire cable All OMRON PCF and the 3G5A2 PF101 APF length 1 m cable come with connectors attached Connectors for all other APF cables must be assembled by the customer As using Optical Fiber cable requires the use of Link Adaptors refer to the Link Adaptor Installation Guide for more detailed information 3 1 3 2 3 3 3 4 LR Area Data LR Area Allocations LR Area Division Tables Data Exchange SECTION 3 Data Exchange and Operations 12 13 17 21 11 LR Area Data Section 3 1 3 1 LR Area Data PC Link Systems employ the LR area in the exchange of data The content of the LR areas in all PCs in the same PC Link Subsystem or Single level System is ke
69. labeled not used may be used as work words in programming to manipulate data within the CPU 14 LR Area Allocations Section 3 2 ria 0 le continued below In the example below the C2000H PC would be a transfer PC and could be used to transfer data between the two Subsystems e g to write to LR word12 by the C200H PC in operating level 0 to LR word 32 one of its write words in operating level 1 Any PC in level 1 could then access this data directly from LR word 32 in its own LR area C2000H CPU Rack C500 CPU Rack C500CPURack ss S E li F Link Unit O Loon i C200H CPU Rack f m ww 5 AEST E TU ERES N x E L PC Link Unit 2 l a PC Link Unit 1 PC Link Unit 3 ic M 4 O Sr 0 PC Link Unit 0 ED La o D ss ae TAT iing Rack 1 PC Link Unit 2 a PC Link Unit 1 I a Operating AAA O BE x C2000H CPU C500 CPU C500 CPU C200H CPU Unit 3 level O LR 00 to LR 03 Unit 1 level O Unit 2 level O LR 00 to LR 03 LR 00 to LR 03 PS s rec LR 08 to LR 11 i LR 08 to LR 11 LR 12 to LR 15 LR 12 to LR 15 LR 08 to LR 11 LR 12 to LR 15 Useable sopane Useable as work LR 16 to LR 31 ood LR 16 to LR 31 as work LR 16 to LR 31 bits level 1 bits Useable as work LR 32 to LR 63 C1000H CPU C200H CPU bits Unit 1 level 1 Unit 2 level 1 level 1 Useable as work bits level 0
70. lfunction e Check the user program for proper execution before actually running it on the Unit Not checking the program may result in an unexpected operation e Confirm that no adverse effect will occur in the system before attempting any of the following Not doing so may result in an unexpected operation e Changing the operating mode of the PC e Force setting force resetting any bit in memory e Changing the present value of any word or any set value in memory e Resume operation only after transferring to the new CPU Unit the contents of the DM Area HR Area and other data required for resuming operation Not doing so may result in an unexpected operation Do not pull on the cables or bend the cables beyond their natural limit Doing either of these may break the cables Do not place objects on top of the cables or other wiring lines Doing so may break the cables Use crimp terminals for wiring Do not connect bare stranded wires directly to terminals Connection of bare stranded wires may result in burning When replacing parts be sure to confirm that the rating of a new part is correct Not doing so may result in malfunction or burning e Before touching a Unit be sure to first touch a grounded metallic object in order to discharge any static built up Not doing so may result in malfunction or dam age xiv SECTION 1 Introduction FI PCIamkSystems 002 e A e eek bp DiY erede 2 1 2 Operating Levels and Poll
71. n for maximum l O response time is thus as follows Response time input ON delay scan time of PC of Unit O x number of LR transfer bits I O refresh bits alpha PC Link poll ing time induction sequence processing time scan time of PC of Unit 7 x number of LR transfer bits I O refresh bits x 2 1 beta output ON delay If scan time of PC of Unit 0 gt PC Link polling time alpha scan time of PC of Unit O If scan time of PC of Unit O lt PC Link polling time alpha PC Link polling time If scan time of PC of Unit 7 gt PC Link polling time beta scan time of PC of Unit 7 If scan time of PC of Unit 7 lt PC Link polling time beta PC Link polling time Inserting the following values into this equation produces a maximum I O re sponse time of 661 3 ms I O refresh bits for Unit O 256 I O refresh bits for Unit 7 256 Reducing Response Time C200H C200HS C200HX HG HE Z Section 6 2 6 2 Reducing Response Time C200H C200HS C200HX HG HE Z IORF 97 can be used in programming to shorten the I O response time greater than is possible by setting a high number of refresh bits Remember increasing the number of refresh bits set on the back panel LED shortens response time but increases the scan time of the PC The following calcula tions for the maximum scan time use the same example System configura tion as that used in 6 7 Response Times In programming the PCs for PC Link Units 0 and
72. n the C2000H PCs Units 0 and 2 The C2000H and C200H LR words that are not used 32 to 63 may be used as work bits in programming The LR word allocations for each PC Link Unit are given below it The shaded area is the section of the LR area written to by the PC Link Unit The arrows indicate data flow In this example data written to words LR 8 through 15 by the PC to which PC Link Unit 2 is mounted is automatically transmitted to words LR 8 through 15 in the other PCs While the PCs for PC Link Units 0 1 and 3 are able to read this data freely they cannot write in this area All of the other PCs also 13 LR Area Allocations Section 3 2 are assigned the word shaded below them which they write and can be writ ten by the other PCs C500 CPU Rack C500 CPU Rack i Il a C2000H CPU C500 CPU C500 CPU C200H CPU Unit O Unit 1 Unit 2 Unit 3 uestes je unies e veste M iones eese uses e inen E seen P pene je inn Useable Useable as work as work LR 32 to LR 63 bits bits Note The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example LR 32 to LR 63 LR Area Allocations in In a Multilevel PC Link System only half of the LR area in each PC is used Multilevel Systems for communications in any one PC Link Subsystem The first half of the words from word 00 is used by the Subsystem assigned operating level 0 the second half by
73. nations of the 3G2A9 AL004 and 3G2A9 AL002 Link Adapters are used to convert to and from optical fiber cable Refer to the Link Adapter Installation Guide for Link Adapter specifica tions and details Each PC Link Unit has only one connector making it impossible to connect more than two PC Link Units directly Many more PCs can become part of the same PC Link System however if Branching Link Adapters are used to connect through A PC Link System including six PCs is illustrated below to show this This arrangement also protects PC Link communications from shutting down completely for failures in the line i e if communications are broken off on a branch line data transfer will continue to PCs still connected though PC Link Units to the polling unit PC with PC PC with PC PC with PC PC with PC Link Unit Link Unit Link Unit Link Unit Link Adapters PC with PC PC with PC Link Unit Link Unit Up to two PC Link Units can be mounted to one PC Any PC with two PC Link Units mounted to it or any PC part of a PC Link System that contains such a PC is in a Multilevel PC Link System If any one PC in the PC Link System has two PC Link Units mounted to it the entire System is multilevel Each group of PCs connected by PC Link Units and sharing parts of the LR area are part of the same PC Link Subsystem If a PC has two PC Link Units mounted to it it is part of two PC Link Subsystems with each Subsys tem extending from a PC with t
74. nce Unit 1 receives no poll ing signal from Unit O it indicates an error for Unit 0 Units 2 3 and 5 receive signals from each other and indicate normal conditions other than an error for Unit 1 LED indications are shown below as well as the conditions of the PC RUN and Error Flags in the SR area Display pattern B LINK O y Y Allocated to Unit 3 THIS j A ETE S HTSTSTS ea LINK on OTHER X Error Flags OFF PCs operative m for Units 2 to 5 for all Units O RUN Error Flag OFF SD for Unit 0 ERROR Error Flag ON for Unit 1 Display pattern B LINK O Allocated to Unit 3 THIS MINI Bit 15 Bit O Word 62 0 0 0 0 0 0 0 1 0 0 1 11 1 1 1 OTHER T Error Flags OFF PCs operative for Units 1 to 5 for all Units Error Flag ON for Unit O Display pattern B LINK O Allocated to Unit 3 THIS Bit 15 J Bit O LINK Word62 0 0 0 0 0 0 1 0 0 0 1 1 1 1 1 1 L Error Flags OFF PCs operative for Units 2 to 5 Error Flag for all Units OFF for Unit 0 Error Flag ON for Unit 1 Error Tables Section 7 3 Units 3 and 5 C200H PC Allocated to Unit 3 7 3 O Bit 15 LI Bit O HD MED THIS Word 250 o ololo olo 1 olo ol 1141 4 3 4T4 LINKO 9 OTHER I ERROR
75. ne immediately 5 When returning an old PC Link Unit for repair include a description of the exact problems and symptoms 6 The PC Link Unit is designed so that parts replacement is unnecessary However it may be necessary to replace a fuse in a Link Adapter if used 8G2A9 AL002 E or 3G2A9 AL004 E The 3G2A9 AL002 E requires a 0 1 A 250 V fuse and the 3G2A9 AL004 E a 0 3 A 250 V fuse 70 Appendix A Standard Models This chart shows the standard models of the products that are available for use with PC Link Units Product Specifications Model number PC Link Unit For use with C500 C500F C1000H C2000 and C2000H PCs Multilevel System possible Includes one RS485 connector and connector cover C500 LK009 V1 For use with C200H C200HS and C200HX HG HE Z PCs Multilevel System possible Includes one RS485 connector and connector cover C200H LK401 Link Adapter Optical APF PCF 3 connectors 3G2A9 AL002 PE Optical APF PCF RS 422 RS 232C 1 connector each 3G2A9 AL001 PE 3G2A9 AL005 PE Optical APF PCF AGF 1 connector each Optical APF PCF 1 connector AGF 2 connectors 3G2A9 AL006 PE RS 422 3 connectors 3G2A9 AL001 Optical PCF 3 connectors 3G2A9 AL002 E Optical PCF RS 422 RS 232 1 connector each 3G2A9 AL001 E 3G2A9 AL005 E Optical PCF optical AGF 1 connector each Optical PCF 1
76. nits used to build PC Link Systems Parts of the Units switch setting and examples of switch settings are provided Section 5 provides details on mounting and wiring PC Link Units and provides Unit dimensions Section 6 offers details and examples of programming PCs to utilize PC Link Systems effectively Section 7 describes error indications and error processing Both indicator lights and dedicated error related flags are provided Section 8 describes basic maintenance and hardware troubleshooting procedures Appendix A provides basic specifications and complete model numbers for OMRON products used in PC Link Systems Appendix B provides general specifications for PC Link Units and PC Link Systems This manual is intended to be used in conjunction with the PC Operation Manual and or Installation Guides for the PCs in the System In most Systems the Link Adaptor Operation Guide will also be required The application of Link Adaptors to PC Link Systems is also described in this manual This manual is designed for the C500 LK009 V1 and C200H LK401 PC Link Units These are some times referred to as the LK009 V1 and LK401 The older 3G2A5 LK003 E and 3G2A5 LK009 E PC Link Units are mentioned only to allow combination with the newer models and are not discussed in detail NWARNING Failure to read and understand the information provided in this manual may result in personal injury or death damage to the product or product failure Please read e
77. nk Units in each Subsystem and combines C2000H C500 and C200H PCs C500 PC Unit 1 level 0 C500 PC Unit 2 level 0 C200H PC Unit 3 level 0 C2000H PC Link Link Unit 0 polling unit Adaptor Adaptor level 0 C500 PC Unit 1 level 1 C500 PC Unit 2 level 1 C200H PC Unit 3 level 1 Unit 0 polling unit level 1 Link Link Adaptor Adaptor The C200H could be replaced by the C200HS and C200HX HG HE Z with out any changes in this example The transmission line selector is set to the bottom position no optical links The DIP switches are set as follows Front panel DIP Switch BBBEBBBE Swi 123 45 67 8 64 transfer LR bits Unit O Back panel DIP Switch SW3 2088 123 4 L Multilevel System level 0 Display pattern A Termination resistance ON 33 Switch Setting Example Section 4 3 Unit 1 Level 0 The transmission line selector is set to the bottom position no optical links C500 LK009 V1 The DIP switches are set as follows Front panel DIP Switch BBBBEBBB swi 1234567 8 l J Setting not necessary Unit 1 Back panel DIP Switch ON s BABB 123 4 zc Multilevel System level 0 Display pattern A Termination resistance OFF Unit 2 Level 0 The transmission line selector is set to the bottom position no opti
78. numerated in the table below C2000H C1000H C200H C500 C200HS or C200HX HG HE Z LR Area LR 0000 to LR 6315 1 024 bits LR 0000 to LR 3115 512 bits Error flags 24708 to 24715 5808 to 5815 24808 to 24815 6208 to 6215 24908 to 24915 25008 to 25015 PC RUN flags 24700 to 24707 5800 to 5807 24800 to 24807 6200 to 6207 24900 to 24907 25000 to 25007 More detailed information about each of the areas is provided in Section 7 Error Processing 22 SECTION 4 Unit Components and Switch Settings 4 1 C200H PC Link Units 00 tt tios 24 4 1 1 Nomenclature Switches and Indicators ooooooooooooooooooo o 24 4 1 2 Switch settings corr si ges E EA EE BE i 25 4 2 ESOO PG Lank Units A A ONE RG AA 28 4 2 Nomenclature Switches and Indicators ooooooooooooooooooo o 28 4 222 SwitchiSet ngs ons oes epo RCRUM ete a valde 29 4 3 Switch Setting Example o ooo ooooocococor I 33 23 C200H PC Link Units Section 4 1 4 1 C200H PC Link Units 4 1 1 Nomenclature Switches and Indicators The basic names and functions of PC Link Unit components are given below Front Panel Cro Td RUN THIS LINKO A Display Indicates operational status r Switches 1 through 4 Used to set the PC Link Unit unit number the Special I O Unit unit number and the number of LR bits in the Subsystem
79. o input a program into a PC or to alter or monitor a program already held in the PC There are dedicated programming devices such as Programming Consoles and there are non dedicated devices such as a host computer An assembly of various Units on a Backplane that forms a functional unit in a building block PC System Racks include CPU Racks Expansion I O Racks I O Racks and Slave Racks A word in the LR area that contains data transferred from another PC in a PC Link System A read word cannot be written to by the PC The forerunner of PCs In relay based control groups of relays are wired to each other to form control circuits In a PC these are replaced by program mable circuits A wiring method in which Units are wired consecutively in a string In Link Systems wired through Link Adapters the Units are still functionally wired in series even though Units are placed on branch lines A PC Link System in which there is no PC with more than one PC Link Unit A PC Link System that connects only two PCs to each other A position on a Rack Backplane to which a Unit can be mounted A dedicated Unit that is designed for a specific purpose Special I O Units include Position Control Units High speed Counter Units Analog I O Units etc The voltage current that a relay can switch on and off The arrangement in which Units in a System are connected Glossary transfer PC transmission distance Unit unit number wi
80. ollowing sections for details on Sys tem design and Link Adapters The 3G2A5 LK003 E PC Link Unit cannot be used in Multilevel Systems PC Link Unit PC Link Unit PC Link Unit PC Link Unit PC PC PC PC PC Link Unit PC Link Unit PC Link Unit PC Link Unit PC Link Unit P P PC P PC Link Unit PC Link Unit PC Link Unit PC Link Unit PC Link Unit P P P PC SECTION 2 System Design 2 1 System Conhsurationves ile A ia 6 2 2 Using ink Adaptors evocar pis delega 10 System Configuration Section 2 1 2 1 System Configuration Multilink Systems Multilevel Systems PC Link Units are mounted to the PC Racks and connected to each other Each PC Link Unit contains a buffer through which data is transferred to and from the other PC Link Units connected to it The C500 LK009 V1 can be used with C500 C1000H and C2000H PCs but not with a C200H C200HS or C200HX HG HE Z PC The C200H LK401 can be used with C200H C200HS and C200HX HG HE Z PCs Link Adaptors are used in any System other than one containing only two PC Link Units connected with wire cable They serve as branching points to enable connecting more than two PC Link Units which provide only one con nector each allowing only two PC Link Units to be connected directly or they serve as conversion points to change between wire and optical fiber cables The 3G2A9 AL001 Link Adapter is used as the Branching Link Adapt er see Example 3 below and combi
81. ons precautions xiii Branching Link Adapter PC Link System 10 C C500 LK003 E PC Link Unit 2 cable connections procedure 40 cable lengths 40 connections 38 wiring connectors 41 connector hood assembly 41 connector layout 40 connector pin numbers 39 control actions in PC Link Systems 2 Converting Link Adapter PC Link System 10 D data area allocation Multilevel PC Link System 14 data configuration 42 data transfer PCs 12 dimensions 42 DIP switch LKO09 29 LK401 25 DIP switch cover LK009 28 Display LK009 28 LK401 24 display patterns 29 setting LK009 32 E Error Flag 60 error tables C200H C200HS and C200HX HG HE Z PCs 65 C500 C500H C1000H C2000 and C2000H PCs 65 Index errors example LED indications 61 62 general 66 processing 55 I O refresh bits LK401 26 indicators 24 28 inspection and maintenance 67 installation precautions xiii instructions IORF 97 51 L LED indications LKO09 29 LK401 24 Level Flag 60 limitations in number of PCs 9 Link Adapter PC Link System 10 Link Adapters 3 10 termination resistance 10 LR area allocation example for multilevel system 13 allocation in Multilevel PC Link System 14 allocation of different size areas in PC Link System 13 allocation tables for 22 use of 12 using unallocated bits in 12 M mode 32 models numbers 73 mounting location 33 Multilevel PC Link Sys
82. ons Section 5 2 Soldering Observe the following when soldering wires onto the connector 1 2 3 1 Place heat shrinking tubes onto all wires far enough from the end so as to not interfere with soldering 2 Presolder all wires and connector terminals 3 Solder all wires inserting 4 mm of the exposed 5 mm of wire into the connector terminal 4 Move the heat shrinking tubes onto the soldered area and shrink them into place Hood Assembly Assemble the connector hood as shown the following diagram See the con nection diagrams above to confirm whether one end is or is not to be con nected to the shield wire AHH Aluminum foil tape Hood FG connected Hood FG not medad to shield wire to shield wire 5 2 Dimensions C500 LK009 V1 Unit mm Y 7 7 A 7 250 7 Backplane 7 J A ut A E ftp 100 H 35 lt Approx 150 42 Dimensions Section 5 2 C500 LK401 117 o 130 Backplane e 1 n Loa Approx 160 PC Link Unit and Base Including RS 485 Connector SS k 43 SECTION 6 Programming Considerations 6 1 RESPONSE Times a3 ld Ro o M eH A IPS 46 6 2 Reducing Response Time C200
83. pt consistent To achieve this the LR area is divided among all of the PCs in the Subsystem according to switch settings and each PC writes data only to the part of the LR area allocated to it When a PC writes to its LR area the data is updated in the LR areas of all the other PCs in the PC Link Subsystem during the next polling cycle The other PCs can then read this data and use it to coordinate activities with the PC that has written the data Each PC thus writes data to its write words and reads data from the words written to by all of the other PC Link Units in the same Subsystem Any action that affects the contents of the LR area is reflected in the LR area in all PCs The data transfer is shown below in a Single level System Arrows indi cate data flow within the PC Link System Write area is the area written by that Unit Read area is an area read by that Unit i e written by another Unit All unused portions of the LR area may be used as work bits in programming Write Data Read Data Read Data Read area area area area Read Data Write Data Read Data Read area area area gt area Read Data Read Data Write Data Read area area area area N way WY WU wa way way WY YY u u YQ u u u u Read Data Read Data Read Data Write area area area area What determines what part of the LR area is allocated to which PC is the
84. r Flag for that Unit will turn ON and an error message will be sent When the error is removed the power comes on or transfer preparation is completed the Error Flag will go OFF An error in Unit O stops all data transfer but an error in another Unit only stops that Unit s communication LR bit status is maintained whenever communication stops for one or more Units Error Flags will not turn ON for FALS 07 instructions use the PC RUN Flags The following tables show the unit number for Single level Systems top line and the unit number followed by the level for Multilevel Systems bottom line C200H C200HS C200HX HG HE Z C1000H and C2000H PCs 30 14 1 28 12 1 27 26 29 28 27 11 1 10 1 13 1 12 1 11 1 22 6 1 20 4 1 19 18 21 420 419 439 2 1 5 1 4 1 3 1 14 14 0 12 12 0 11 10 13 12 1 341 0 10 0 13 0 12 0 1 0 6 6 0 4 4 0 3 2 5 4 3 3 0 2 0 5 0 4 0 3 0 Error Flags PC RUN Flags 4 1 3 1 gt 5 1 4 1 43 1 2 1 4 4 0 3 5 4 3 2 3 0 5 0 4 0 3 0 2 0 Level Flags 60 Error Flags PC RUN Flags AR area flags that indicate the type of System and level of the Subsystem of the PC Link Unit mounted to the PC are also provided for C200H C200HS C200HX HG HE Z C1000H and C2
85. re communications work word write word A PC that belongs to two PC Link Subsystems i e has two PC Link Units mounted to it A transfer PC can be used to transfer data between the two PC Link Subsystems to which it belongs The distance that a signal can be transmitted In OMRON PC terminology the word Unit is capitalized to indicate any prod uct sold for a PC System Though most of the names of these products end with the word Unit not all do e g a Remote Terminal is referred to in a col lective sense as a Unit Context generally makes any limitations of this word Clear A number assigned to some Link Units and Special I O Units to assign words and sometimes other operating parameters to it A communications method in which signals are sent over wire cable Al though noise resistance and transmission distance can sometimes be a problem with wire communications they are still the cheapest and the most common and perfectly adequate for many applications A word that can be used for data calculation or other manipulation in pro gramming e g LR words not used in a PC Link or Net Link System A word written in the LR area by a PC in a PC Link System The data of the write words is transferred to the rest of the PCs that share common data areas i e the write words for one PC are read words for the rest of the PCs in the PC Link System 79 Numbers 3G2A5 LK009 E 2 A B application examples 51 applicati
86. re connection formed between two Units Link can refer either to a part of the physical connection between two Units e g opti cal links in Wired Remote I O Systems or a software connection created to data existing at another location Network Data Links linkable slot Link System Link Unit main line Multilevel PC Link System Multilink PC Link System noise interference optical cable link optical communications optical fiber cable PC PC Link Subsystem PC Link System PC Link Unit PC System peripheral device polled unit Glossary A slot on either a CPU or Expansion l O Backplane to which a Link Unit can be mounted Backplanes differ in the slots to which Link Units can be mounted A system that includes one or more of the following systems Remote l O System PC Link System Host Link System or Net Link System Any of the Units used to connect a PC to a Link System These are Remote I O Units I O Link Units PC Link Units Host Link Units and Net Link Units n a Link System connected through Branching Link Adapters the communi cations cable that runs from the Unit at each end of the System through the Link Adapters A PC Link System in which at least one PC has two PC Link Units mounted to it A PC Link System in which more than two PCs share a common data area Disturbances in signals caused by electrical noise In a Wired Remote I O System an optical cable connecting two Conv
87. resh LR bits at particular points in a programming if current LR data is required Refer to the Operation Manual for your CPU Unit for details When mounting two PC Link Units to the same PC in a Multilevel System set one PC Link Unit for operating level O and the other for operating level 1 Set all PC Link Units in each Subsystem to the same operating level If all PCs in the System have only one PC Link Unit mounted to them set all Units for a Single level System There is no difference in the first two settings Operating Level flags AR 2411 and AR 2412 can be used to check operating levels An error indication will not be made even if two PC Link Units with the same Subsystem are mounted to the same PC set and check the pins with care ON SW7 12345678 i Single level Single level Multilevel level 1 Multilevel level O Pin 8 on switch 7 can be turned on to allocate twice the normal number of words to any polled unit This is not possible for a polling unit which will be allocated the normal number of words regardless of the setting of pin 8 If pin 8 is left off the PC Link Unit will be allocated the number of words indi cated by setting of switch 4 The actual words will be determined by the unit number If pin 8 is turned on the PC Link Unit will be allocated the words both for its unit number and for the next larger unit number i e it will be allocated twice the number of words
88. s to be allocated Whenever two or more PCs are con nected in a PC Link System one of the PC Link Units must be set as the poll ing unit i e as Unit 0 and all other PC Link Units must be set as polled units i e as any Unit other than 0 The polling unit of each PC Link Sub system does not control the other PCs which are each controlled independ ently by their own CPUS Operating Levels and Polling Section 1 2 A maximum of two PC Link Units can be mounted to the same PC If two PC Link Units are mounted to one PC anywhere in the System the System is multilevel and all Units must be set for a Multilevel System see 4 2 2 Switch Settings In a Multilevel System operating levels must be set to create PC Link Subsystems Each Subsystem will have its own polling unit Up to four Subsystems are possible There will always be one more Subsys tem than there are PCs to which two PC Link Units are mounted Only oper ating levels 0 and 1 are set as it is necessary only to differentiate between two PC Link Units on the same PC All of the PC Link Unit in the same Sub system must be set to the same level A PC Link System with three Subsystems is shown below Any one of the PC Link Units in any Subsystem may be designated as the polling unit All other Units would be polled units The small boxes shown connecting the PC Link Units are Link Adapters which are used to connect PC Link Units when more than two are used in a Subsystem See f
89. sesseeeeeeeeee II SECTION 2 System Design criar arre 2 1 System Configuration sls epos qe CR RR edo dp e ROS ERU e ls 2 2 Using Link Adaptors i refer6x eo leer SECTION 3 Data Exchange and Operations 3 1 TER Area Data repe E RERO da nares 3 2 LR Area Allocations o ooooo Rh Rr hrs 3 3 LR Area Division Tables llleeeee I ras 3 4 Data Exchange cmo ers SECTION 4 Unit Components and Switch Settings 4 1 200H PC Tank UNIS A a e 4 2 C500 PC Dink Units isses e sd RR ER RR Ra RC AR Edo ens 4 3 Switch Setting Example l eeseeeeeeee ee eects SECTION 5 System Installation vir 5 1 Mounting and Connections 0 0 eect eens 25 2 DIMENSIONS seda Bae AAA BS A Biase is A SECTION 6 Programming Considerations 6 1 Response Innes eio p eae note RUPEE PET RUE HV ASI 6 2 Reducing Response Time C200H C200HS C200HX HG HE Z 6 3 Programming Examples 0 0 0 eee ee SECTION 7 Error Processing avisar au ieee ens T l SR Area Flags eror E E Bod Shee ER RAM eee Ge vp A T 7 2 Error Examples ier A Peete Vie Sh a PETS 132 Error Tables nc aia set ee eh aera a E Ede ees SECTION 8 Inspection and Maintenance eee Appendix A Standard Models 0 2 4085 cst id dies Eee dl sie decd Be Specifications iive te se bh actaysed Ge ected peo HEP et da eevee been Glossary us
90. st be assigned a unit number as such Set a number between 0 and 9 The unit number assigned to the PC Link Unit must not be used for any other Special I O Unit controlled by the same PC IR and DM words allocated to the unit number assigned are not used by the PC Link Unit and may therefore be used as work bits in pro gramming 25 C200H PC Link Units Section 4 1 Switch 4 Number of LR Bits This setting is necessary only on the polling unit Unit 0 This setting deter mines the number of LR bits that will be transferred via the LR area for each PC Link Unit No of LR bits Single level PC Link Units Single level No of LR bits Multilevel PC Link Units Multilevel 32 32 32 16 64 16 64 8 128 8 4 256 4 2 512 2 Setting unavailable ojoon I oala A WO PM oO As there is a maximum number of LR bits available for use in the LR area and since the number of available bits must be split equally among the PC Link Units of the System as the number of bits required by a particular Unit increases the maximum number of PC Link Units in the Subsystem must decrease As the number of Units required in the Subsystem increases the number of LR bits assigned to each PC Link Unit must decrease Switch 5 Set switch 5 to the right if only wire cable is used in the System and to the Transmission Line Selector left if optical links are used between Link Ad
91. ted to data communications All switches should be set before mounting a PC Link Unit to the PC Errors in switch settings which are not always detected by the System can cause incorrect data communications Set and check all switch settings care fully The switches on the front panel are numbered from 1 through 4 They are set using a regular screwdriver Turn the switch until the desired number appears in the window Be careful not to damage the slots on the switches Do not leave a switch mid way between settings Switches 1 and 2 determine the PC Link Unit number Switch 1 is the tens digit switch 2 the ones digit The number of the Unit thus can be read di rectly by considering the digits in the windows of switch 1 and switch 2 as a single number Each PC Link Unit in every Subsystem must be given its own unit number This number will determine the LR words allocated to the Unit The Unit assigned number 0 is the polling unit All other Units are polled units Do not use the same unit number more than once in any one Subsys tem Do not set a number higher than one less than the maximum number of PC Link Units allowed in the System see 2 1 System Configuration for spe cific limits Errors in setting unit number are sometimes not detected by the System leading to incorrect data in the LR area Set unit numbers carefully The C200H LK401 PC Link Unit is considered a Special I O Unit for the C200H C200HS or C200HX HG HE Z PC and mu
92. tem 6 multilevel system example 8 multilevel systems 3 example 8 N O operating environment precautions xiii operating level PC Link System 6 word allocation in PC Link System 14 Operating Level flags LK401 27 81 Index operating level setting LK009 32 LK401 26 operating levels 3 operation 17 optical fiber cable PC Link System 10 optical links 7 10 P PC Link Subsystem 6 PC Link System diagram Link Adapters 6 LR area allocation 12 13 14 Multilevel System 7 14 System using optical cable 10 Multilevel System 6 transferring data 7 PC RUN Flag 59 PCs applicable 6 system limitations for 9 Polling Unit Multilevel PC Link System 6 polling unit 2 precautions applications xiii general xi operating environment xiii safety xii programming examples simultaneous startup 16 transferring data between Subsystems 52 protection System PC Link System 6 R response time 21 response time calculations C1000H C2000 and C2000H PCs 46 C200H PCs 48 C500 PCs 46 RS 485 connector LKO09 28 LK401 24 RS 485 interfaces 38 S safety precautions See precautions scan time PC 26 82 shield wire connections 38 shutdown System preventing PC Link System 6 single level system example 8 Special I O Unit Error Flags 67 Special I O Unit error list 66 Special I O Unit number setting LK401 25 Special I O Unit Restart Bits 67 Spe
93. the Subsystem assigned operating level 1 This is true regardless of whether or not a PC is actually in two Subsystems In the ex ample on the next page the two C500s do not use LR words 16 through 31 because they are not in a Subsystem in operating level 1 If another PC Link Unit was later added to either PC these words would be available for use by it The number of words used by a Subsystem is thus half of the number of words provided by the PC with the smallest LR area Once the words used in a Subsystem are determined the process is the same as for any other PC Link System words common to all of the PCs in a Subsystem are divided evenly among the PC Link Units with unit numbers determining which words are allocated to which Unit Again the Unit assigned number 0 in each Subsystem is the polling unit for that Subsystem Below are provided the system configuration unit numbers operating levels and word allocations for each PC Link Unit in a Multilevel System The vertical bars represent the LR area in each PC Arrows indicate data flow from the words written to by each PC Write words for each PC have been shaded In the Subsystem assigned operating level 1 LR words 56 through 63 are not used for PC Link communications because switch settings are available only for 2 4 8 or 16 PC Link Units per Subsystem If a fourth PC was added to this Sub System it would be assigned these words Although not used by the PC Link System words
94. unicates with external devices etc A Backplane used to create a CPU Rack Part of a building block PC the CPU Rack contains the CPU a Power Sup ply and other Units With most PCs the CPU Rack is the only Rack that pro vides linkable slots 75 Glossary data area distributed control electrical noise Expansion l O Backplane Expansion I O Rack I O capacity 1 O Control Unit 1 O devices 1 O Interface Unit I O point O Unit interface Link Adapter link 76 An area in the PC s memory that is designed to hold a specific type of data e g the LR area is designed for to hold common data in a PC Link System A automation concept in which control of each portion of an automated sys tem is located near the devices actually being control i e control is decen tralized and distributed over the system Distributed control is a concept ba sic to PC Systems Electrical static that can disturb electronic communications The snow that can appear on a TV screen is an example of the effects of electrical noise A Backplane used to create an Expansion I O Rack Part of a building block PC an Expansion I O Rack is connected to either a CPU Rack or Slave Rack to increase the number of slots available for mount ing Units The number of inputs and outputs that a PC is able to handle This number ranges from around one hundred for smaller PCs to two thousand for the largest ones A Unit mounte
95. urs during transfer communication is broken either partially or completely see 7 7 SR Area Flags for details preventing LR data from be ing updated although the most recent data is normally preserved even for power failures The maximum time required per PC scan for PC Link Unit transmissions de pends on the number of PC Link Units in the System and the number of LR bits transferred per PC i e the maximum time is the time required to service all PCs and update all LR words in each The equation for this is given below The final 10 ms is required for processing at the end of transmission Maximum transmission time transmission time per PC Link Unit x number of PC Link Units 10 ms The minimum transmission time is the transmission time for one PC Link Unit plus the post transfer processing time Minimum transmission time transmission time for one PC Link Unit 10 ms Transmission Time per PC Link Unit Number of LR bits 32 64 128 256 512 Transmission time 2 2 ms 2 5 ms 2 8 ms 3 8 ms 5 8 ms After 256 cycles of PC Link Unit polling an induction sequence is executed if any PC Link Units have not been established in communications This se quence is executed for each non active PC Link Unit to established commu nications and requires 15 ms per PC Link Unit 21 Data Exchange Section 3 4 PC Data Areas PC Link Units utilize data areas in the PCs for both communication and op eration monitoring These data areas are e
96. wo PC Link Units to either the end PC or the next PC with two PC Link Units see diagram below Each Subsystem will have its own polling unit Each Subsystem is also as signed an operating level to differentiate the two Subsystems to which one PC belongs These operating levels do not imply a hierarchy or in anyway affect operation of the Subsystems except to determine which LR words are allocated to which Subsystem see next subsection for details The following example conceptually shows a Multilevel PC Link System with three Subsystems Although Subsystems 1 and 3 are assigned the same operating level they are not related in any special way System Configuration Subsystem 1 operating level 1 N Link Link Link PC Link Unit Adapter Adapter Adapter CPU Link Link o Adapter Adapter Subsystem 2 operating level 0 Transfer PCs Transmission Distance Examples Section 2 1 Note that a Link Adapter is not used in Subsystem 3 As explained above it does not require any because it contains only two PCs CPU Rack CPU Rack CPU Rack PC Link Unit PC Link Unit PC Link Unit CPU CPU CPU Subsystem 3 operating level 1 CPU Rack CPU Rack CPU Rack PC Link Unit PC Link Unit PC Link Unit PC Link Unit CPU A PC that has two PC Link Units mounted to it is called a transfer PC This is because it can be used to transfer data between the two PC Link Subsys tems to whi

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