Spectrum Controls 1746sc-INI4vi - Manual (Page 49)

Chapter 6: Testing Your Module 45
Interpreting The LED
Indicators
Your module has five LEDs: four channel status LEDs (numbered 0–3
for channels 0–3, respectively) and one module status LED.
Figure 17. LED block
Module Status
Channel
Status
Isolated Analog
0
1 2
3
INPUT
Use the following table to interpret the LEDs:
Table 16. LED definition
If the module And the channel
status LED is… 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 the following section,
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.
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.