Chapter 4 Names of Parts
4 -1
Chapter 4. Names of Parts

4.1 Main Unit

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RS-485
No. Name Description
PWR LED
Indicates status of power supply to the system
y On : When the supplied power is normal
y Off : When the supplied power is abnormal
RUN LED
Indicates operating status of main unit
y On : Indicates local key switch or remote running mode
y Off : with the followings, LED turns off
- When the supplied power to the main unit is abnormal.
- While key switch is on stop mode
- Detecting an error which makes operation stop
①
CPU
Condition
LED
ERR LED
Indicates operating status of CPU
y Flickering : self-inspected error
y Off: CPU is working normal.
PAU/REM
STOP
RUN ON
BUILT_IN CNET
ROM MODE
OFF