50
Table22 – LEDsThe LEDson the RTU--MPshow the status of certain functions
Ifthis LE D 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
IfRun LED shows... AndError LED shows... Statusis...
2flashes p er second Off Normal
2flashes p er second 2flashes,
alternatingwith Run LED
Five minute auto---restartdelay after sys-
tem 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
havethesameARC156networkaddress
2flashes p er second On Exec halted after frequent system errors
orcontrol progra 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 7flashes p er second, alternating with
Run LED
Tensecond recovery period after brown-
out
14flashes per second 14flashes per second,
alternatingwith Run LED Brownou t
On On
Failure.Try the following solutions:
STurnthe RTU---MP off, then on.
SFor m at the RT U ---M P.
SDownloadmemory to the RTU---MP.
SReplacethe RTU---MP.
48TC