Chapter 6: Testing Your Module
6-3
User’s Manual Pub. 0300266-04 Rev. A
Table 4-1 LED Definition
Use the following table to interpret LED indications:
If the module status
LED is…
And the channel status LED
is…
Then...
On
On
The channel is enabled.
Blinking
One of the following channel errors occurred:
•
Circuit open or no wiring is connected.
•
Signal is near or beyond end of range
•
Channel configured incorrectly
Refer to Troubleshooting.
Off
Either your module is powering up or the
channel is disabled.
Off
Off
Either the power is off, the module is powering
up, or a module fault occurred. Cycle power. If
the condition persists, call your local distributor
or Spectrum Controls for assistance.
Section 6.5
Interpreting
I/O Error Codes
I/O error codes appear in word S:6 of the SLC processor status file. The first two
digits of the error code identify the slot (in hexadecimal) with the error. The last
two digits identify the I/O error code (in hexadecimal).
The error codes that apply to your module include (in hexadecimal):
•
50–5E
•
71 (watchdog error)
•
90–94
For a description of the error codes, refer to the
Allen-Bradley Advanced
Programming Software (APS) Reference Manual
, Allen-Bradley publication
1746-6.11.
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