Omron CS1W-CLK21-V1 Troubleshooting Using Indicators, 1 CS/CJ-series Controller Link Units

Troubleshooting Using Indicators Section 9-1

9-1 Troubleshooting Using Indicators

This section describes the errors indicated by the Controller Link Unit indica- tors and possible remedies.

9-1-1 CS/CJ-series Controller Link Units

CS-series Unit

CLK21-V1
RUN
ERC	ERH
INS	M/A
SD	LNK
RD	TER

CJ-series Unit

CLK21-V1

RUN	ERC		INS	SD
TER	ERH	M/A	LNK	RD

RUN:	Operating
ERC:	Communications error
ERH:	PLC error
INS:	Network participation
LNK:	Data link
M/A:	Data link mode
TER:	Terminating resistance

Troubleshooting with RUN, ERC, ERH and INS Indicators

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			Probable cause	Probable remedy
RUN	ERC	ERH	INS
Lit	Not lit	Not lit	Lit	Unit operating normally;	---
				Network participation nor-
				mal.
Not lit	Lit	---	---	Node address is set out of	Set the node addresses to
				range.	between 1 and 32.
				Controller Link Unit faulty.	If the ERC indicators still
					lights when the Unit is
					mounted on another PLC,
					replace the Controller Link
					Unit.
				Wired Network 62 Node	Turn ON the Wired Net-
				Enable Bit is set incor-	work 62 Node Enable Bit
				rectly.	and turn the power supply
					OFF and ON.

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