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The LEDs on the RTU Open control board show the status of certain functions
If this LED is on...
Power
Rx
Tx
DO#
If Run LED shows...
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
5 flashes per second
5 flashes per second
7 flashes per second
14 flashes per second
On
Access Port
J12
Cable
Fig. 60 - - BACview
Table 8 – LEDs
Status is...
RTU Open has power
RTU Open is receiving data from the network segment
RTU Open is transmitting data over the network segment
The digital output is active
The Run and Error LEDs indicate control module and network status
And Error LED shows...
Off
2 flashes,
alternating with Run LED
3 flashes,
then off
4 flashes,
then pause
On
On
Off
7 flashes per second, alternating with
Run LED
14 flashes per second,
alternating with Run LED
On
P1
P1
P5
P5
BACview
6
Handheld Connections
Status is...
Normal
Five minute auto---restart delay after system error
Control module has just been formatted
Two or more devices on this network have the
same ARC156 network address
Exec halted after frequent system errors or
control programs halted
Exec start---up aborted, Boot is running
Firmware transfer in progress, Boot is running
Ten second recovery period after brownout
Brownout
Failure. Try the following solutions:
Turn the off, then on.
S
Format RTU Open.
S
Download memory to RTU Open.
S
Replace RTU Open.
S
33
Protocol Selector
RTU Open
6
Local Access Cable
C10812
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