Rockwell Automation 1746-NO8V SLC 500 8-Point Analog Output Module/ User Manual - Manual (Page 57)

Publication 1746-UM026A-EN-P - September 2003
Module Diagnostics and Troubleshooting 6-5
Troubleshooting Figure 6.2 Problem Resolution Flowchart
Check that module
is properly seated
in chassis.
Cycle power.
Module
fault
condition.
Module
Status
LED off. Module
Status
LED flashing. Module
Status
LED on.
1
Flash
2
Flashes
3
Flashes
4
Flashes
5
Flashes
6
Flashes
7
Flashes
24V Power Failure
Check external supply or
jumper settings (if used).
Configuration Error
Check module and channel
configuration settings.
EEPROM Fault
RAM Fault
Input Access Error
Output Access Error
ROM CRC Failure
Is problem
corrected? Yes
No
Is problem
corrected? Yes
No
End
End
End
Contact RA Technical
Support or your
Allen-Bradley
distributor.
Contact RA Technical
Support or your
Allen-Bradley
distributor.
Check LEDs
on module.
Channel
Status LED(s)
flashing.
Channel
Status LED(s)
off.
Channel
Status LED(s)
on solid.
Channel is
enabled, but
not working.
Channel is
not enabled.
Fault
condition.
Check channel
status word
bits 12 to 15.
Enable channel.
Set configuration
word, bit 0 = 1.
Retry.
Check channel
status word 1
bits 12 to 15.
Bit 15
set (1)
Bit 15
set (1)
Bit 14
set (1)
Bit 13
set (1)
Bit 12
set (1)
Fatal channel error. Reset
the processor or cycle
power to the module.
The processor or module
is resetting. Check SLC
processor status.
Current loop for this
channel is open.
24V Power Failure.
Check external supply.
Check channel
status word 2
bit 15.
Channel configuration
error. Check channel
configuration.