![background image](http://html1.mh-extra.com/html/omron/cvm1-series/cvm1-series_operation-manual_742102080.webp)
65
Checking the PC Link’s Operating Conditions
Section 4-2
4-2
Checking the PC Link’s Operating Conditions
LED Indicators
Turn ON the power supplies to all PLCs in the PC Link system and check the
status of the PC Link Units’ LED Indicators with the PLCs in PROGRAM
mode.
CVM1-LK401 Indicators
Meaning of the CVM1-LK401 LED Indicators
Name
Color
Status
Unit status
RUN
(Run)
Green Lit
The Unit is operating normally. (Lit after initial-
ization is completed.)
Not lit
Unit error
ERC
(Communications
error)
Red
Lit
A hardware error or node address setting
error occurred. (See note.)
Flashing
A link error occurred with the polling node
link, Local Unit link, or Other Unit link.
Not lit
The Unit is communicating normally.
ERH
(PLC error)
Red
Lit
An error occurred in the PLC, such as a CPU
Unit error, PLC interface error, EEPROM
error, unit number setting error, or I/O table
setting error.
Not lit
There are no errors in the CPU Unit.
LINK0
(Node 0/Polling
node link)
Yellow Lit
Normal status, link established with Node 0
(polling node)
Not lit
Error status, link not established with Node 0
(polling node)
THIS
(Local Unit link)
Yellow Lit
Normal status, link established with local Unit
Not lit
Error status, link not established with local
Unit
OTHER
(Other Unit link)
Yellow Lit
Normal status, link established with other Unit
Not lit
Error status, link not established with other
Unit
LK401
RUN
ERH
THIS
LINK0
ERC
OTHER
Summary of Contents for CVM1 Series
Page 1: ...Cat No W434 E1 01 SYSMAC CVM1 CV Series CVM1 LK401 PC Link Unit This manual is PDF file only...
Page 2: ...CVM1 LK401 PC Link Unit Operation Manual Produced July 2004...
Page 3: ...iv...
Page 5: ...vi...
Page 41: ...26 Differences from Earlier PC Link Units Section 2 6...
Page 77: ...62 Replacement Checklists Section 3 6...
Page 95: ...80 Link Adapter Specifications Appendix B...
Page 101: ...86 PC Link System I O Response Time Appendix C...
Page 103: ...88 PC Link Settings and Status Areas Appendix D...
Page 105: ...Revision History 90...