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C07170
Fig. 64 -- BACview
6
Handheld Connections
RTU--MP Troubleshooting
Communicati on LEDs
The LEDs on the RTU--MP (see Fi g. 46) indicate if the
controller is speaking to the devices on the network. The
LEDs should reflect communication traffic based on the
baud rate set. The higher the baud rate the more solid the
LEDs will appear. See Table 16 for further information.
Table 16 – RTU--MP LEDs
The LED s on the RTU---MP show the status of certain functions
If th is LED is on...
Status is...
Power The RTU MP has power
Rx The RTU MP is receiving data f rom the network s egment
Tx The RTU M P is transmitting data over th e network segment
DO# The digital output is active
The Run and Error LEDs indicate control module and network status
If R un LED shows...
And Error LED shows... Status is...
2 flashes p er second Off Normal
2 flashes p er second
2flashes,
alternating with Run LED
Five minute auto---re start delay after
system error
2 flashes p er second
3flashes,
then off
Control module has just been
formatted
2 flashes p er second
4flashes,
then pause
Two or more devices on this network
havethesameARC156networkaddress
2 flashes p er second On
Exec halted after freq uent system errors
or co ntrol p ro grams halted
5 flashes p er second On Exec start---up aborted, Boot i s r unning
5 flashes p er second Off
Fir mware transfer i n progress, Boot i s
running
7 flashes p er second
7 flashes p er second, alternating w ith
Run LED
Ten second reco very period after
brownout
14 fl ashes per second
14 fl ashes per second,
alternating with Run LED
Browno ut
On On
Failure. Try the following solutions:
S Tu rn the RTU---MP off, then on.
S Format the RTU --- MP.
S Download memory to the RTU---MP.
S Replace the RTU---MP.
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