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E70 Series Connection Manual
2.5 Operation Panel I/O Unit
35
(13) LED
Name Function At fault Conditions
3VON 3VDC input check Not lit (1) Disconnection between control unit and operation panel I/O unit
5VON 5VDC input check Not lit
(1) Disconnection between control unit and operation panel I/O unit
(2) Short circuit of manual pulse generator cable
PACKETNG
RIO communication
status check
Lit (Red)
(1) Partial disconnection between control unit and operation panel I/O unit
(2) Miswiring of extended I/O unit to RIO3
RIO1
RIO communication
status check
Not lit
12VON
For manual pulse
generator
Not lit Short circuit of manual pulse generator cable
DOCOM 24VDC input check Not lit
(1) Disconnection of 24V input
(2) Disconnection of protection fuse on the operation panel I/O unit