Observe the Status LEDs on the front of the expansion module. Table 1 provides LED status indicator information for troubleshooting the expansion module.
| LED label | LED color | Normal LED state | Description of LED states |
|---|---|---|---|
|
POWER |
Green |
On Steady |
Off Steady = No Supply Power or the expansion module’s polyswitch/resettable fuse is open. Check Output wiring for short circuits and cycle power to expansion module. On Steady = Power Connected |
|
FAULT |
Red |
Off Steady |
Off Steady = No Faults On Steady = Device Fault; no application loaded; Main Code download required, if expansion module is in Boot mode, or a firmware mismatch exists between the FX-PCX and the FX-ZFR1811 Wireless Field Bus Router. Blink - 2 Hz = Download or Startup in progress, not ready for normal operation |
|
SA/FC BUS |
Green |
Blink - 2 Hz |
Blink - 2 Hz = Data Transmission (normal communication) Off Steady = No Data Transmission (N/A - auto baud not supported) On Steady = Communication lost, waiting to join communication ring |
|
EOL |
Amber |
Off (Except on terminating devices) |
On Steady = EOL switch in ON position Off Steady = EOL switch in OFF position |