Omron CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1 2 C200HX/HG/HE and CQM1H-series Controller Link Units

Troubleshooting Using Indicators			Section 9-1
	Configuring a Network with 32 Nodes or Less
	Problem	Status	Cause and Remedy
	The node is not	The node with the	Reset the node address between 1 and
	present in the net-	ERC indicator ON is	32, then turn the power OFF and ON
	work.	set to a node	again.
	(ERC indicator: ON	address of 33 or
	RUN indicator: OFF	higher.
	INS indicator: OFF)
	The maximum num-	A CS1W-CLK21-V1	The Wired Network 62 Node Enable Bit
	ber of nodes in the	or CJ1W-CLK21-V1	in the DM Parameters Area of the
	network is set to 62.	is present in the net-	CS1W-CLK21-V1 or CJ1W-CLK-V1 is
		work.	ON. Turn OFF the Wired Network 62
			Node Enable Bit, then turn the power
	The data link status	The corresponding
			supply OFF and ON again.
	is showing statuses	node is a CS1W-
	for 62 nodes.	CLK21-V1 or CJ1W-
		CLK21-V1.
	The network partici-
	pation status is
	showing statuses for
	62 nodes.
9-1-2 C200HX/HG/HE and CQM1H-series Controller Link Units
	C200HX/HG/HE Unit		CQM1H-series Unit

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

CLK21

RUN TER

ERC ERH

INSM/A

SD RD LNK

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

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	---	---	Controller Link Unit faulty.	If the ERC indicators still
					lights when the Unit is
					mounted on another PLC,
					replace the Controller Link
					Unit.

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