Rockwell Automation 1738-485ASCM12 ArmorPoint I/O RS-485 ASCII Module, Series A - Manual (Page 9)

Publication 1738-IN010A-EN-E - June 2004
ArmorPoint I/O RS-485 ASCII Module, Series A 9
Flashing Red One or more I/O connections in timed-out state.
Red Critical link failure - failed communication device. Device
detected error that prevents it from communicating on the
network.
Flashing Red/Green Communication faulted device - the device has detected a
network access error and is in communication faulted state.
Device has received and accepted an Identity Communication
Faulted Request - long protocol message.
Indication Probable Cause
Transmit/Receive Status
Flashing Transmit/Receive Check wiring, ground, and Rx connection. User
parameter object to view record numbers.
Flashing Receive/ Off Transmit Check wiring. Watch the Tx light. If is does not flash,
check to ensure that you are properly initiating the
transmission. Use the EDS parameter object to try
transmitting and watch the light. If it flashes, you are
not properly initiating transmission via I/O messaging. If
it does flash, check the remote device.
Off Transmit/Green Receive Check connections as you may have wired the device
backwards.
Indication Probable Cause