Rockwell Automation 1203 Serial Communications Module PPG OPTOMUX - Manual (Page 24)

Chapter 4
Troubleshooting
4-2
Table 4.A
LED Troubleshooting Table
Indicator Color Description Recommended Action
Serial Sts Green (Blinking) Link OK, off-line Check configuration switch settings,
check for serial cable connection,
cycle communications module power
Green (Steady) Link OK, on-line None, system functioning properly
Red (Steady) Faulted Check configuration switch settings,
check for serial cable connection,
cycle power, replace module
SCANport Sts Green (Blinking) Link OK, not connected Check configuration switch settings,
check for serial cable connection,
cycle power
Green (Steady) Link OK, connected None
Red (Steady) Faulted Check configuration switch settings,
check for serial cable connection,
cycle power, replace module
TX Off No transmission occurring Send serial data again
Amber Transmission occurring None
RX Off No transmission received Check data device to verify it is sending
data
Amber Transmission being received None