Omron SYSMAC CS Series Operation Manual page 76

CS1-H CPU Unit Ver. 2.0 Upgrades
Connection pattern
From a computer through a
direct network connection
From another PLC in the
network
Operation
38
Diagram (example)
Computer
CMND
PLC #1
Network
With the CX-Programmer, open the PLC Setup's FINS Protection Tab and
select the Use FINS Write Protection Option. When this option is selected, it
will not be possible to execute write operations for that CPU Unit with FINS
commands sent through a network. To permit write operations from particular
nodes, enter network addresses and node addresses for the node under Pro-
tection Releasing Addresses. (Up to 32 nodes can be excluded from FINS
Write Protection).
The CPU Unit in PLC #2
can be write-protected.
PLC #1
Network
If the CMND instruction is used to send
a FINS command (requesting a write
operation) to the CPU Unit of PLC #2,
the operation is not performed.
The CPU Unit in PLC #2
can be write-protected.
PLC #2
Section 1-6
Write
protection
Can be
applied.
PLC #2
Can be
applied.