48TC

 

 

Table 22 – LEDs

 

The LEDs on the RTU-MP show the status of certain functions

 

 

 

If this LED is on...

 

Status is...

Power

 

The RTU MP has power

Rx

 

The RTU MP is receiving data from the network segment

Tx

 

The RTU MP is transmitting data over the network segment

DO#

 

The digital output is active

The Run and Error LEDs indicate control module and network status

If Run LED shows...

And Error LED shows...

Status is...

2 flashes per second

Off

Normal

2 flashes per second

2 flashes,

Five minute auto---restart delay after sys-

alternating with Run LED

tem error

 

2 flashes per second

3 flashes,

Control module has just been

then off

formatted

 

2 flashes per second

4 flashes,

Two or more devices on this network

then pause

have the same ARC156 network address

 

2 flashes per second

On

Exec halted after frequent system errors

or control programs halted

 

 

5 flashes per second

On

Exec start---up aborted, Boot is running

5 flashes per second

Off

Firmware transfer in progress, Boot is

running

 

 

7 flashes per second

7 flashes per second, alternating with

Ten second recovery period after brown-

Run LED

out

 

14 flashes per second

14 flashes per second,

Brownout

alternating with Run LED

 

 

 

 

Failure. Try the following solutions:

 

 

S Turn the RTU---MP off, then on.

On

On

S Format the RTU---MP.

 

 

S Download memory to the RTU---MP.

 

 

S Replace the RTU---MP.

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Carrier 48TCA04---A12 appendix LEDs on the RTU-MP show the status of certain functions

48TCA04---A12 specifications

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