Omron CVM1 Series, Operation Manual

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6
System Configuration Section 1-2
Setting the Link Number In a multi-level system, the LR Area is divided into two parts (link #0 and link
#1), so there are 512 Link Relay bits (32 words) available for each operating
level.
For example, when the first level is #0 and the second level is #1, the third
level would be #0 and the LR Areas used by each level will not overlap.
• The operating level (link number) settings must match in all of the PC Link
Units in the same operating level.
Setting the Number of
Link Relay Bits The number of Link Relay bits is set in the Unit with node address 0 (polling
node) in each operating level. The settings in the other Units (polled nodes)
are ignored.
• The following table shows the maximum number of PLCs that can be con-
nected for a given number of LR bits per PLC.
Link
number
CVM1/CV Series or
CS Series
C Series
C1000H/C2000H,
C200H/C200HS, or
C200HX/HG/HE
C500
#0 Data link words:
CIO 1000 to CIO 1031
LR words:
LR 00 to LR 31
LR words:
LR 00 to LR 15
#1 Data link words:
CIO 1032 to CIO 1063
LR words:
LR 32 to LR 63
LR words:
LR 16 to LR 31
Number of LR bits per PLC Max. number of PLCs in PC Link
32 bits (2 words) 16
64 bits (4 words) 8
128 bits (8 words) 4
256 bits (16 words) 2