281
Troubleshooting Using Indicators
Section 9-1
Configuring a Network with 32 Nodes or Less
9-1-2
C200HX/HG/HE and CQM1H-series Controller Link Units
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.
Problem
Status
Cause and Remedy
The node is not
present in the net-
work.
(ERC indicator: ON
RUN indicator: OFF
INS indicator: OFF)
The node with the
ERC indicator ON is
set to a node
address of 33 or
higher.
Reset the node address between 1 and
32, then turn the power OFF and ON
again.
The maximum num-
ber of nodes in the
network is set to 62.
A CS1W-CLK21-V1,
CS1W-CLK23,
CJ1W-CLK21-V1, or
CJ1W-CLK23 is
present in the net-
work.
The Wired Network 62 Node Enable Bit
in the DM Parameters Area of the
CS1W-CLK21-V1, CS1W-CLK23,
CJ1W-CLK21-V1, or CJ1W-CLK23 is
ON. Turn OFF the Wired Network 62
Node Enable Bit, then turn the power
supply OFF and ON again.
The data link status
is showing statuses
for 62 nodes.
The corresponding
node is a CS1W-
CLK21-V1, CS1W-
CLK23, CJ1W-
CLK21-V1, or CJ1W-
CLK23.
The network partici-
pation status is
showing statuses for
62 nodes.
RUN: Operating
ERC: Communications
error
INS: Network
participation
LNK: Data
link
M/A: Data
link
mode
TER:
Terminating resistance set
RUN
ERC
INS
SD
RD
M/A
LNK
TER
ERH
CLK21
CQM1H-series Unit
C200HX/HG/HE Unit
RUN
ERC
INS
SD
RD
M/A
LNK
TER
ERH
CLK21
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.
Summary of Contents for C200HW-CLK21
Page 3: ...iv ...
Page 9: ...x ...
Page 12: ...xiii TABLE OF CONTENTS Index 367 Revision History 373 ...
Page 13: ...xiv ...
Page 19: ...xx ...
Page 57: ...32 Application Precautions Section 1 5 Example CX Programmer Response Timeout Setting ...
Page 69: ...44 Message Service Procedure Section 2 2 ...
Page 111: ...86 Constructing Networks with Repeater Units Section 3 4 ...
Page 154: ...129 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 261: ...236 Response Codes Section 6 7 ...
Page 297: ...272 Message Delay Times Section 8 4 ...
Page 353: ...328 Handling Precautions Section 9 6 ...
Page 364: ...339 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 365: ...340 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 369: ...344 Standard Models Appendix A ...
Page 391: ...366 Using the Relay Terminal Block Appendix C ...
Page 397: ...372 Index ...
Page 401: ...376 Revision History ...