Page 2 - PC Link; System Manual
Page 3 - DANGER; WARNING; Caution; OMRON Product References
! ! ! v Notice: OMRON products are manufactured for use according to proper procedures by a qualified operatorand only for the purposes described in this manual. The following conventions are used to indicate and classify precautions in this manual. Always heedthe information provided with them. Fai...
Page 4 - TABLE OF CONTENTS; vii
TABLE OF CONTENTS vii PRECAUTIONS xi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Intended Audience xii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 General Precautions xii . . . . . . . . . . . . . . ....
Page 5 - ix
ix About this Manual: A PC Link System enables use of the LR (Link Relay) data area as a common data area shared by all PCsin 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...
Page 6 - xi; PRECAUTIONS
xi 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 readthis section and understand the information contained before a...
Page 7 - xii; Intended Audience; Personnel in charge of installing FA systems.; General Precautions; Safety Precautions
! ! ! ! 3 Safety Precautions xii 1 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. • P...
Page 8 - xiii; Operating Environment Precautions; Application Precautions
! ! ! ! ! 5 Application Precautions xiii 4 Operating Environment Precautions Caution Do not operate the control system in the following locations: • Locations subject to direct sunlight. • Locations subject to temperatures or humidity outside the range specified inthe specifications. • Locations sub...
Page 9 - xiv; Wire correctly. Incorrect wiring may result in burning.
5 Safety Precautions xiv • Always use the power supply voltages specified in this manual. An incorrectvoltage may result in malfunction or burning. • Take appropriate measures to ensure that the specified power with the ratedvoltage and frequency is supplied. Be particularly careful in places where ...
Page 10 - PC Link Systems
1 SECTION 1 Introduction 1-1 PC Link Systems 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Operating Levels and Polling 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 11 - Compared with I/O Links; LK003-E PC Link Units; Operating Levels and Polling
2 1-1 PC Link Systems A PC Link System is established to interconnect two or more C-series PCsthrough 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, creatingdifferent levels of operation. Each PC in the PC Link Sys...
Page 13 - System Configuration
5 SECTION 2 System Design 2-1 System Configuration 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Using Link Adaptors 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 14 - Multilink Systems
6 2-1 System Configuration 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 andfrom the other PC Link Units connected to it. The C500-LK009-V1 can beused with C500, C1000H, and C2000H PCs, but not with a C2...
Page 15 - Examples
7 Note that a Link Adapter is not used in Subsystem 3. As explained above, itdoes not require any because it contains only two PCs. CPU Rack CPU Rack PC Link Unit PC Link Unit CPU Link Adapter PC Link Unit PC Link Unit CPU CPU Rack PC Link Unit CPU CPU Rack PC Link Unit CPU CPU Rack PC Link Unit CPU...
Page 17 - System Limitations
9 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 numberof levels, the specific PCs employed, and the mode settings on the PC LinkUnits. A PC Link Unit must be assigned a number no greater than one less than th...
Page 18 - Using Link Adaptors
10 2-2 Using Link Adaptors In a PC Link System, Link Adapters are used whenever more than two PCLink Units are connected in any one PC Link Subsystem. They are also usedto enable optical links between PC Link Units to provide greater transmissiondistance and greater noise resistance. When using Link...
Page 19 - LR Area Data
11 SECTION 3 Data Exchange and Operations 3-1 LR Area Data 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 LR Area Allocations 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 21 - LR Area Allocations
13 3-2 LR Area Allocations 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 howmany LR words are allocated to each PC are determined by switch settings,which are described in 4-2-2 Switch Settings. This ...
Page 22 - Note
14 are assigned the word shaded below them which they write and can be writ-ten by the other PCs. PC Link Unit 1 PC Link Unit 3 C2000H CPU Rack C500 CPU Rack C500 CPU Rack C200H CPU Rack PC Link Unit 2 PC Link Unit 0 LR 08 to LR 15 C2000H CPUUnit 0 C500 CPUUnit 1 C500 CPUUnit 2 C200H CPUUnit 3 LR 00...
Page 25 - LR Area Division Tables
17 LR 00 & LR 01 LR 14 & LR 15 LR 02 & LR 03 C500 PC Unit 7, level 1Unit 0, level 0 LR 30 & LR 31 LR 32 & LR 33 LR 18 & LR 19 LR 00 & LR 01 LR 00 & LR 01 LR 02 & LR 03 LR 30 & LR 31 LR 32 to LR 63 LR 02 & LR 03 LR 30 & LR 31 LR 32 to LR 63 LR 00 & ...
Page 27 - Multilevel Systems; Level 0
19 If the LK003-E is used or LK-009-E(-V1) is used in LK003 mode, the right-most three columns of the following table can be applied. No. of PC Link Units 5 to 8 5 to 8 3 or 4 2 LR Wd LR bits/Unit 32 64 128 256 0 and 1 Unit #0 Unit #0 Unit #0 Unit #0 2 and 3 Unit #1 4 and 5 Unit #2 Unit #1 6 and 7 U...
Page 28 - Level 1
20 No. of PC Link Units 9 to 16 5 to 8 3 or 4 2 LR Wd LR bits/Unit 32 64 128 256 32 and 33 Unit #0 Unit #0 Unit #0 Unit #0 34 and 35 Unit #1 36 and 37 Unit #2 Unit #1 38 and 39 Unit #3 40 and 41 Unit #4 Unit #2 Unit #1 42 and 43 Unit #5 44 and 45 Unit #6 Unit #3 46 and 47 Unit #7 48 and 49 Unit #8 U...
Page 29 - Total polling time = T; x number of PC Link Units + 10 ms; Maximum transmission time =; transmission time per PC Link Unit x number of PC Link Units + 10 ms; Minimum transmission time =; transmission time for one PC Link Unit + 10 ms; Transmission Time per PC Link Unit; Induction Sequence; Data Exchange
21 3-4 Data Exchange System control in a PC Link System is decentralized; the polling unit merelyhandles 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. ...
Page 30 - PC Data Areas
22 PC Link Units utilize data areas in the PCs for both communication and op-eration monitoring. These data areas are enumerated in the table below. C2000H, C1000H, C200H,C200HS, or C200HX/HG/HE(-Z) C500 LR Area LR 0000 to LR 6315 (1,024 bits) LR 0000 to LR 3115 (512 bits) Error flags 24708 to 24715...
Page 31 - Switch Settings
23 SECTION 4 Unit Components and Switch Settings 4-1 C200H PC Link Units 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-1 Nomenclature, Switches, and Indicators 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-2 ...
Page 32 - The LEDs indicate the following :; Front Panel
24 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. Display Indicates operational status. Switches 1 through 4Used to set the PC Link Unit unit number,the Special I/O Unit unit number, and thenumber of LR b...
Page 33 - Back Panel
25 ConnectorUsed to connect the PCLink Unit to the Rack. DIP switch (SW7)Adjusted to select Single/Multilevel System, operatinglevel, mode, and number ofI/O refresh words. 4-1-2 Switch Settings Switch settings determine how the PC Link Units will work together and howthe LR area will be allocated to...
Page 37 - Display Patterns; The LED’s indicate the following for either display pattern:
29 LK009-V1 LK009-V1 Unit 0 Unit 2 Unit 4 Unit 6 Unit 1 Unit 3 Unit 5 Unit 7 Unit 0 This PC Link Unit Display Pattern A Display Pattern B Another PC LinkUnit in System Display Patterns The LED’s indicate the following for either display pattern: LED status Meaning Lit The specified PC Link Unit is o...
Page 40 - Pin 2: Display Pattern
32 To operate properly, the PC Link Unit at each end of the main line of eachSubsystem must have the termination resistance switch turned ON, and allPC Link Units that branch off the main line must be turned OFF. An exampleis provided below. Each large box represents one or two PC Link Unitsmounted ...
Page 41 - Front-panel DIP Switch; Switch Setting Example
33 4-3 Switch Setting Example Switch settings for the following System are given below for level 0. The set-tings for all PC Link Units in level 1 would be the same, except for the levelsetting (pins 3 and 4 on the back-panel DIP switches). These are the normalsettings, but not the only ones possibl...
Page 45 - Mounting and Connections
37 SECTION 5 System Installation 5-1 Mounting and Connections 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1-1 Mounting Location 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1-2 Connecti...
Page 46 - Mounting Location; Electrical Cable Only
38 5-1 Mounting and Connections 5-1-1 Mounting Location The PC Link Unit may be mounted to any of the slots on the C2000H CPURack. 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. On C500-BC082 or C500-BC052 Rac...
Page 48 - Connector Pin Numbers
40 Pin connections for Systems using optical links are shown below. Twist SDBwith SDA; RDA with RDB. The shield wire is connected only at one end ofeach cable to prevent current flow. For cables connecting a PC Link Unit to aLink Adapter, connect the shield wire to FG at the PC Link Unit connector(e...
Page 49 - Wiring Cables
41 Use the following procedure to wire connectors. Refer to the following diagrams as necessary. 1. Cut the cable to the required length. 2. Being careful not to damage the braiding underneath, use a razor bladeto cut away 25 mm of sheath. 3. Using scissors, cut away all but 10 mm of the exposed shi...
Page 50 - Soldering; Dimensions
42 Observe the following when soldering wires onto the connector. 1. Place heat-shrinking tubes onto all wires far enough from the end so asto 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 theconnect...
Page 52 - Response Times
45 SECTION 6 Programming Considerations 6-1 Response Times 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Reducing Response Time (C200H, C200HS, C200HX/HG/HE(-Z)) 51 . . . . . . . . . . . . . . . . . 6-3 Programming Examples...
Page 54 - Maximum Response Time
47 The equation for minimum I/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 + output ONdelay Inserting the following values into this equation produces a minimum I/O re-sponse time of 99 ms. Inpu...
Page 55 - Minimum Response Time
48 The equation for maximum I/O response time is as follows: Response time = input ON delay + (scan time of PC of Unit 0 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 ...
Page 59 - Programming Examples
52 6-3 Programming Examples This example explains the programming required to start the entire ControlSystem shown below only after all “preparation-completed flags” are turnedON for both Subsystems. Using the following programming, any PC that isnot in RUN mode will be ignored and operations will c...
Page 60 - Program
53 LR Area Allocations Unit 0 LR 00 & LR 01 Unit 1 LR 02 & LR 03 Unit 2 LR 04 & LR 05 Unit 3 LR 06 & LR 07 Unit 4 LR 08 & LR 09 Unit 5 LR 10 & LR 11 Unit 6 LR 12 & LR 13 Unit 7 LR 14 & LR 15 Work bits LR 16 & LR 31 Unit 0 LR 32 & LR 33 Unit 1 LR 34 & LR 35...
Page 62 - All words below are shown with the Unit that writes to them.; System Configuration 2
55 This example is for a System with three Subsystems consisting of a C1000HPC, 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. Unit 7 ...
Page 63 - Programming Example 1
56 Using the above System, the following programming, which is started byturning 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 rightwhen PC (D) sends a START signal is sent to PC (B). This signal is trans-fer...
Page 64 - Programming Example 2
57 Using the above System, the following programming, which is started by startinput 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. LR 3200 LR 0000 LR 4900 LR 0000 CMP(20) LR 14 LR 48 LR 1500 00000 MOV(21) LR 14 LR 48 LR 1500...
Page 65 - SR Area Flags
59 SECTION 7 Error Processing The PC Link Units provide various means of monitoring systems operation and resolving errors when they occur. Theseinclude LED indications, PC RUN and Error Flags, and, for C200H, C200HS, and C200HX/HG/HE(-Z) systems, SpecialI/O Unit Error Flags and Restart Bits. 7-1 SR...
Page 66 - PC RUN and Error Flags
60 7-1 SR Area Flags PC RUN Flags can be read to determine the operational status of each PC towhich a PC Link Unit is mounted. All PCs are operational when their PC RUNFlag is ON. If there is a transfer error or a power failure for any PC Link Unit, the ErrorFlag for that Unit will turn ON, and an ...
Page 68 - Error conditions are indicated by the LEDs as described below.; Error Examples
62 7-2 Error Examples Error conditions are indicated by the LEDs as described below. Some errors in switch settings (e.g., setting the same unit number for morethan on PC Link Unit) will not result in an error display, but will cause LR areadata to be in error. LK009 LK401 MEANING Only possible on t...
Page 70 - Break at Point B
64 Because Unit 0 receives no response from Unit 1 only, it indicates an errorfor it, and normal conditions for Units 2 and 3. Since Unit 1 receives no poll-ing signal from Unit 0, it indicates an error for Unit 0. Units 2, 3, and 5 receivesignals from each other and indicate normal conditions other...
Page 71 - Error Tables
65 Units 3 and 5 (C200H PC) 1 1 0 0 1 1 1 1 0 0 0 0 0 0 1 0 Bit 15 Bit 0 Word 250 Error Flags OFFfor Units 2 and 5. Error Flag OFFfor Unit 0. PCs operativefor all Units. Error Flag ON forUnit 1. Allocated to Unit 3. The C200H could be replaced by the C200HS and C200HX/HG/HE(-Z) with-out any changes ...
Page 72 - General Errors
66 C200H, C200HS, and C200HX/HG/HE(-Z) PCs Error Condition Unit #0 PC CPU error Unit #0 Special I/O Unit error Unit #1 cable problem (missing or broken) Unit #0 cable problem (missing or broken) Unit #n cable problem (missing or broken) Error in data reception from Unit #n Unit #n PC CPU error Unit ...
Page 75 - If there is a problem, follow the following steps.; Inspection and Maintenance; Section 8
70 PC Link Units should be inspected regularly at the same time as the PCs towhich they are attached. The following three areas should be given specialattention. Item Description Ambient conditions Temperature: 0 ° to 55 ° C Humidity: 35% to 85% Dust-free Proper attachment PC Link Unit attached firm...
Page 76 - Appendix A; Standard Models; Cables and Connectors
71 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 C500-LK009-V1 C2000H PCs. Multilevel System possible. Includes one RS485 con...
Page 78 - Appendix B; Specifications
73 Appendix B Specifications Item 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 optica...
Page 79 - Glossary; A temporary storage space for data in a computerized device.
75 Glossary A base to which Units are mounted to form a Rack. Backplanes provide aseries of connectors for these Units along with wiring to connect them to theCPU. Backplanes also provide connectors used to connect them to otherBackplanes. In some Systems, different Backplanes are used for different...
Page 80 - A Backplane used to create an Expansion I/O Rack.
Glossary 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., c...
Page 81 - A PC Link System in which more than two PCs share a common data area.
Glossary 77 A slot on either a CPU or Expansion I/O Backplane to which a Link Unit canbe mounted. Backplanes differ in the slots to which Link Units can bemounted. A system that includes one or more of the following systems: Remote I/OSystem, PC Link System, Host Link System, or Net Link System. Any...
Page 82 - A PC Link System that connects only two PCs to each other.
Glossary 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 aPC Link System, polling is performed by the polling unit to maintain commondata areas among PCs. The PC Link Unit in a PC Link System that h...
Page 83 - The distance that a signal can be transmitted.
Glossary 79 A PC that belongs to two PC Link Subsystems (i.e., has two PC Link Unitsmounted to it). A transfer PC can be used to transfer data between the twoPC Link Subsystems to which it belongs. The distance that a signal can be transmitted. In OMRON PC terminology, the word Unit is capitalized t...
Page 84 - Index; Numbers
81 Index Numbers 3G2A5–LK009–E, 2 A-B application examples, 51 applications, 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 layo...
Page 86 - Revision History; Revision code
83 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 theprevious version of the manual. Revision...
