C200Hx/Hg/He And Cqm1H-Series Controller Link Units - Omron C200HW-CLK21 Operation Manual

Troubleshooting Using Indicators
9-1-2

C200HX/HG/HE and CQM1H-series Controller Link Units

Troubleshooting with RUN, ERC, ERH and INS Indicators
Configuring a Network with 32 Nodes or Less
Problem
The node is not
present in the net-
work.
(ERC indicator: ON
RUN indicator: OFF
INS indicator: OFF)
The maximum num-
ber of nodes in the
network is set to 62.
The data link status
is showing statuses
for 62 nodes.
The network partici-
pation status is
showing statuses for
62 nodes.
C200HX/HG/HE Unit
CLK21
RUN
ERC
INS
SD
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 ---
Status
The node with the Reset the node address between 1 and
ERC indicator ON is 32, then turn the power OFF and ON
set to a node again.
address of 33 or
higher.
A CS1W-CLK21-V1 The Wired Network 62 Node Enable Bit
or CJ1W-CLK21-V1 in the DM Parameters Area of the
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 corresponding
supply OFF and ON again.
node is a CS1W-
CLK21-V1 or CJ1W-
CLK21-V1.
TER
ERH
M/A
RD LNK
RUN: Operating
ERC: Communications error
INS: Network participation
LNK: Data link
M/A: Data link mode
TER: Terminating resistance set
Probable cause
INS
Unit operating normally;
Network participation nor-
mal.
--- Controller Link Unit faulty.
Section 9-1
Cause and Remedy
CQM1H-series Unit
CLK21
RUN TER
ERC ERH
INS M/A
SD RD LNK
Probable remedy
---
If the ERC indicators still
lights when the Unit is
mounted on another PLC,
replace the Controller Link
Unit.
283