Omron CVM1 Series, Operation Manual

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SECTION 3
Replacing an Existing PC Link System
This section provides step-by-step procedures to follow when replacing earlier PC Link Units with the C500-LK009-V1
and CVM1-LK401 PC Link Units.
3-1 Replacing an Existing PC Link System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3-2 PC Link Unit Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3-3 CVM1-LK401 Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3-3-1 Setting the Unit Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3-3-2 Setting the Node Address in the PC Link. . . . . . . . . . . . . . . . . . . . . 35
3-3-3 Setting the Number of LR Bits (Max. Number of PC Link Units). . 36
3-3-4 Setting the Level/Link Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3-3-5 Setting the Transmission Line and Terminating Resistance . . . . . . . 38
3-4 Ladder Programming Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3-4-1 LR Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3-4-2 PC Link Status Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3-4-3 Level Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3-4-4 CPU Bus Unit Status Flags. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3-5 PLC Operation Mode (Synchronous/Asynchronous Mode) . . . . . . . . . . . . . . 44
3-6 Replacement Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3-6-1 Pattern A: Mixed Mid-sized and Large PLCs . . . . . . . . . . . . . . . . . 50
3-6-2 Pattern B: C500 PLCs in Single-level LK003 Mode Only. . . . . . . . 52
3-6-3 Pattern C: Large PLCs in Multi-level or Single-level LK009 Mode 58