Emerson FB3000 Instruction Manual page 92

FB3000 RTU Instruction Manual
D301851X012
November 2023
LED
Termination
Board Status
USB
COM1, COM2,
COM3, COM4
ISO+T
V+
Special Diagnostic LED Sequence
A repeating sequence of: Module Status GREEN then OFF, Communication Status RED then
OFF, USB GREEN, then OFF indicates a hardware failure: return the CPU module to factory
for repair.
78
Color/State
GREEN
RED
Flashing GREEN
Flashing GREEN with Module
Status LED alternating RED
and ORANGE and
Communication Status LED
also flashing RED.
GREEN
RED
ORANGE
Off
GREEN
GREEN
Meaning
Personality module OK
Personality module missing or
mismatched type.
Flashes at 5-second interval when
CPU SRAM battery power low.
Flashes at 1-second interval when
CPU SRAM battery power is low and
personality module is invalid.
USB receive or transmit in progress.
CPU module is in wrong slot (must be
in slot 1). If this sequence occurs at a
rate faster than approximately every
half-second, indicates a hardware
failure. Return CPU to factory for
repair.
Receive on this port in progress.
Transmission on this port in
progress.
Receive and transmit in progress.
No transmissions active
RS-485 communications enabled on
COM3 or COM4
Power applied to personality module.
Service and Troubleshooting