Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 220)

Troubleshooting
Chapter 10
10Ć8
Figure 10.5
Troubleshooting Flowchart
START
Processor
RUN
indicator
?
I/O
adapter ACTIVE
indicator
?
PC
communications
fault
indicator
Expander
communication
fault indicator
?
Processor
RUN
indicator
?
1771-M3
controller
ACTIVE indicator
on constant
1771-ES
expander
ACTIVE indicator
on?
1771-ES
Expander
Diagnostic indicator
on ?
?
?
Consult Assembly
and Installation
PC Manual
1. Data blocks overlap
processor or program
memory
2. Invalid block transfer
starting addresses
3. Replace 1771-M3
controller
References in reverse type are to the
notes in section titled "Monitoring the
Status Block".
Flashing
?
1. Switch settings.
2. Power down
reseat 1771ĆES
expander.
3. Replace 1771ĆES
expander.
1. 1771ĆES expander
switch settings.
2. Replace 1771ĆM3
controller
3. Replace 1771ĆES
expander(s).
1. Power down.
reseat 1771ĆES expander.
2. Cycle power at I/O chassis
3. Replace 1771ĆES
expander.
1. Cycle power at I/O chassis
2. Replace 1771ĆES
expander.
3. Replace 1771ĆM3 controller
1. Check I/O chassis
power supply.
2. Power down,
reseat 1771ĆM3
controller
3. Replace 1771ĆM3
controller.
Consult PC
installation
manual
OFF
ON
ON
OFF
OFF
YES
YES
NO
ON
OFF
ON
NO NO
YES
YES
NO
A
11068 OS
1
2
3
2
2
2
1
1
1
4
2
2
2
2
2