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Table4 – LEDs
The LEDson the RTU--MPshow the status of certain functions
Ifthis LED is on... Statusis...
Power The RTU MP has power
Rx TheR TU MP is receiving data from the networksegment
Tx The RTU MP is transmitting data over the network segment
DO# Thedigital outp ut is active
TheRun and Error LE Ds indicatecontrol module and network status
If Run LED shows... And Error LED shows... Statusis...
2flashes p er second Off Normal
2flashes p er second 2flashes,
alternatingwith Run LED Five m inuteauto ---restartdelay after system error
2flashes p er second 3flashes,
then off Controlmodule has just been formatted
2flashes p er second 4flashes,
then pause
Twoor more devices on thi s network have the
same ARC156 network address
2flashes p er second On Exec halted after frequent system errors or
controlprogra ms halted
5flashes p er second On Exec start---up aborted, Boot is running
5flashes p er second Off Firmware transfer in progress, Boot is running
7flashes p er second 7 flashes per second, alternating with
Run LED Tensecond recovery period after brownout
14flashes per second 14flashesper second,
alternatingwith Run LED Brownou t
On On
Failure.Try the following solutions:
STurnthe RTU ---MPoff, then on.
SFor m a t t h e R TU --- M P.
SDownloadmemory to the RTU---MP.
SReplacethe RTU---MP.
NOTE: Contact your Bryant applications engineer for
details on configuration of RTU--MP, operating sequences
and troubleshooting information, as well as details on
configuration and troubleshooting of connected networks.
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