Omron CQM1H-CLK21 - Manual (Page 352)

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Handling Precautions Section 9-6
previous status. If, however, the CPU Unit is replaced, the data link tables and
routing tables will need to be reset.
1,2,3... 1. Turn off all nodes in the Controller Link Network.
2. Detach the communications cables attached to the Controller Link Unit to
be replaced and remove the Unit.
3. Mount the new Controller Link Unit in the PLC and connect the communi-
cations cables. (Refer to SECTION 3.)
4. Set the unit number, node address, baud rate, and the terminating resis-
tance for the new Unit to the same settings as the previous Unit. (Refer to
SECTION 4.)
5. Turn on the power to the PLCs at all nodes in the Controller Link Network
other than those for which the Controller Link Unit was replaced.
6. Check that all the other nodes are active and then turn on the power to the
PLC with the Controller Link Unit that was replaced.
7. Using the Controller Link Support Software, read the network parameters
and make sure the Network is operating normally.
8. If the data links are not activated automatically, start the data links from the
data link startup node.
9. Check that the data links are operating normally by monitoring them from
the Controller Link Support Software.