Omron CS1W-LC001 Operation Manual page 80

Names and Functions of Parts
Indication
RUN
ERH
ERC
SD
RD
LED Indicators
LC001
RUN
ERC
SD
RD
Name Color State
CPU Unit Green Out
running
Lit
CPU Unit Red Out
error
Lit
Loop Red Out
Control
Lit
Unit error
Blinking Battery error (only when pin 2 of DIP switch is OFF)
 Â
Not used
 Â
Not used
Battery
When the battery compartment cover is opened, you can access the battery
mounted as shown below.
The battery is used for backing up the following data in the Loop Control Unit:
Á
Function block data
Á
Error log data
If pin 2 of the DIP switch is OFF and the battery voltage drops or a battery is
not mounted, the ERC LED on the front panel blinks. At the same time, bit 05
of the leading n words of the allocated relay area and ITEM095 of the System
Common block (Block Model 000) become 1 (ON), and the error log code
(0330 for battery error and 0331 for function block database error) is stored
on the Loop Control Unit.
Note If pin 2 of the DIP switch is ON, flash memory contents will be automatically
transferred to RAM at startup, bit 5 of word n will be ON, and ITEM 095 of the
CS
ERH
Á
System stopped
A probable cause is one of the following:
Á
Initialization of unit in progress
Á
Unit hardware trouble
Á
No power supply from power supply unit
Á
Unit WDT error
Á
Operation of Loop Control Unit stopped
(A probable cause is one of the following:)
- Regular operation stopped
- CPU Unit operation stop error
- CPU Unit in standby mode
- Load rate exceeded at operation cycle of 2 s
(Operation Cycle Automatic Switching
Generation flag ON)
Á
Loop Control Unit running
Á
No CPU Unit error
Á
CPU Unit error
No error
Error
Battery
Section
Description
Â
Â
2-1
61