3. TROUBLESHOOTING
3.1 List of Unit LEDs
– 19 –
(2) Base I/O unit, card-sized I/O
Base I/O unit
CF3
1
CF
32
CF3
3
CF
34
SKI
P
EN
C1
CF
10
SV
2
SV1
CS2
CS1
RIO1
CR31
DCIN
24IN
RAL1
5OUT
RAL2
RIO2
Card-sized I/O
5IN RAL
ＣＦ３
０
[Explanation of LED functions]
Status
Name Function Color
When normal During error
Correspondence for error
24IN During 24VDC input supply
Green
Lit
Not lit
5OUT During 5VDC circuit power output
Green
Lit
Not lit
RAL1
Onboard I/O No. 1 channel
communication alarm
Red
Not lit
Lit
RAL2
Onboard I/O No. 2 channel
communication alarm
Red
Not lit
Lit
Refer to section 3.2.2 (7)
5IN
During card-sized I/O 5VDC input
supply
Green
Lit Not
lit
5VDC
±
5% voltage supply
RAL
Card-sized I/O communication
alarm
Red
Not lit
Lit
Refer to section 3.2.2 (7)