Electrical
Troubleshooting Guide
IRB6400 M94A
Page 2 - 20
Computer System
2.4.9
Remote I/O Board DSQC 239
Symptom Description
Source of Fault
A: 32 yellow LEDs indicate
Robot computer board,
the status for the first 16
rear plane, internal
inputs and 16 outputs.
fault in the unit, cabling,
or system parameters.
LEDs
RED
GREEN
F
ACTIVE (OK)
OFF
ON
Normal indication, Node Adapter
fully operational
ON
ON/OFF
Node adapter board not properly
initiated, probable cause:
- Board faulty
- Incorrect I/O-type parameter
ON/OFF OFF
No communication with host
processor, probable cause:
- Incorrect parameters for RIO-
board
- Incorrect wiring
- Host processor fault
ON/OFF BLINK
Bad Communication, probable
cause:
- Host Processor in Program
mode
- Reversed connections
The serial I/O interface, DSQC 239 (RIO), is intended
to be used for communication with Allen-Bradley PLC
equipment. The board is equipped with 32 yellow LEDs
(which indicate the status of the first 16 inputs and
outputs on the front panel), a red F-LED and a green
LED, "ACTIVE".
If the green LED is not lit and the red one goes OFF, the
board's special communication circuit is probably faulty.
If
replaced
, there are no adjustments or procedures
required.
DSQC
239
F OK
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2 SLOTS WIDE
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