Omron SYSMAC CVM1 Series Operation Manual page 18

Features of the PC Link System
Up to 32 Link Units in a
Single-level System
Multi-level Systems
PC Link Units connected in a single operating level can exchange data
between a minimum of 2 and maximum of 32 PLCs. The size of the LR Area
is fixed at 64 words (1,024 points), so allocating more Link Relay bits to each
Unit will reduce the number of Units that can be connected in the PC Link.
Node 0
PC Link Units can be connected in a level configuration with up to 4 operating
levels. The operating level structure allows more complex distributed control.
Node 0
Node 0
(Level 2)
(Level 1)
Node 0 Node 1
(Level 3)
(Level 2)
Node 0
Node 1
(Level 4) (Level 3)
Node 1
32 Units max.
Node 1
Link Adapter
Node 1
Operating level 1
Node 2
Operating level 2
Node 2
Operating level 3
Node 2
Operating level 4
Section 1-1
Node 31
Node 30
Link Adapter
Node 14
Node 15
Node 14
Node 15
Node 15
Node 14
Node 14
Node 15
Link Adapter
3