Troubleshooting Using Indicators; Cs/Cj-Series Controller Link Units - Omron C200HW-CLK21 Operation Manual

Troubleshooting Using Indicators

9-1 Troubleshooting Using Indicators
9-1-1

CS/CJ-series Controller Link Units

Troubleshooting with RUN, ERC, ERH and INS Indicators
276
This section describes the errors indicated by the Controller Link Unit indica-
tors and possible remedies.
CS-series Unit
CLK21-V1
RUN
ERC
INS
SD
RD
RUN:
ERC:
ERH:
INS:
LNK:
M/A:
TER:
The RUN, ERC, ERH, and INS indicators can be used to check whether Con-
troller Link Unit startup and Network participation are operating normally.
Note Be sure to turn off the power to the PLC before performing any of the follow-
ing.
• Disconnecting the Unit or connectors.
• Securing Units or connectors.
• Setting hardware switches.
Indicators
RUN ERC ERH
Lit Not lit Not lit Lit
Not lit Lit ---
ERH
M/A
LNK
TER
Operating
Communications error
PLC error
Network participation
Data link
Data link mode
Terminating resistance
Probable cause
INS
Unit operating normally;
Network participation nor-
mal.
--- Node address is set out of
range.
Controller Link Unit faulty.
Wired Network 62 Node
Enable Bit is set incor-
rectly.
Section 9-1
CJ-series Unit
CLK21-V1
RUN ERC INS SD
TER ERH M/A LNK RD
Probable remedy
---
Set the node addresses to
between 1 and 32.
If the ERC indicators still
lights when the Unit is
mounted on another PLC,
replace the Controller Link
Unit.
Turn ON the Wired Net-
work 62 Node Enable Bit
and turn the power supply
OFF and ON.