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Is there a way to find out what IP address the BOOTP server assigned to the NOC module?

To retrieve the IP address of the BMENOC without knowing in advance what it is, a READ_VAR request needs to be sent :

 

1- The configuration of the character string of the ADDMX should follow this rule : 'r.s.c{127.0.0.1}UnitID' , with :

  • r : rack number of the BMENOC
  • s: slot number of the BMENOC
  • c: channel to be used to communicate with BMENOC
  • UnitID : if UnitID is not 255, then you need to type in the number

In my example , my BMENOC is located in slot 3 of rack 0 , the string is '0.3.0{127.0.0.1}100'

Then the IP address used is the loopback IP address of the BMENOC module:127.0.0.1 .

2- Then send a modbus request to the BMENOC with the following parameters :

  • Enable : trigger
  • ADR : ADDM_TYPE with Unit ID =100
  • OBJ : '%MW'
  • NUM : 5
  • NB: 2
  • GEST : exchange management array of 4 INT, do not forget to define a timeout (3rd INT of the array)

The array RECP_NOC[1..2] contains the IP address of the BMENOC in hexadecimal format.

Schneider Electric Việt Nam

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