Omron SYSMAC CVM1 Series Operation Manual page 21

System Configuration
Setting the Link Number
Setting the Number of
Link Relay Bits
6
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.
Link CVM1/CV Series or
number CS Series
#0 Data link words:
CIO 1000 to CIO 1031
#1 Data link words:
CIO 1032 to CIO 1063
• The operating level (link number) settings must match in all of the PC Link
Units in the same operating level.
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.
Number of LR bits per PLC
32 bits (2 words)
64 bits (4 words)
128 bits (8 words)
256 bits (16 words)
C Series
C1000H/C2000H,
C200H/C200HS, or
C200HX/HG/HE
LR words: LR words:
LR 00 to LR 31 LR 00 to LR 15
LR words: LR words:
LR 32 to LR 63 LR 16 to LR 31
Max. number of PLCs in PC Link
16
8
4
2
Section 1-2
C500