![background image](http://html.mh-extra.com/html/omron/c200hw-clk21/c200hw-clk21_operation-manual_742483074.webp)
49
Component Names and Functions
Section 3-1
Wired Unit Indicators
Note
Even when the local node does not participate in the data link, the M/
A indicator will be lit if there are manually set data links active on the
network.
For details, refer to
9-1 Troubleshooting Using Indicators
Name
Color
Status
Meaning
RUN
(operating)
Green
Lit
Unit operating normally.
Not lit
Unit error.
TER
(terminating resis-
tance)
Yellow
Lit
Terminating resistance switch is ON.
Not lit
Terminating resistance switch is OFF.
ERC (communica-
tions error)
Red
Lit
Communications error, node address
setting error (same address set twice), or
hardware error.
Not lit
Normal operation
ERH
(PLC error)
Red
Lit
PLC error, PLC interface error, EEPROM
error, unit number error, or I/O table not
set
Not lit
No error.
INS
(network participa-
tion)
Yellow
Lit
Unit is participating (inserted) in the net-
work.
Not lit
Unit is not participating (inserted) in the
network.
SD
(send)
Yellow
Lit
Data transmission.
Not lit
No data transmission.
RD
(receive)
Yellow
Lit
Data reception.
Not lit
No data reception.
M/A
(data link mode)
Yellow
Lit
Manual
(see note)
Note:
M/A is always not lit
when data links are not
active in the network.
Not lit
Automatic
LNK
(data link)
Yellow
Lit
Data links participating.
Flashing
Error in data link table.
Not lit
Not in a data link or data link inactive.
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 ...