I am new using Micrologix 1100 with modbus RTU. I have two ML1100 and two cables 1763-NC01. I want to know if is possible communicate the two ML1100, one like Modbus master and the other like modbus slave. And both using MSG instructions.

Regards

email: edels79 [at] hotmail.com

 

Hi Edel,

Yes, it is possible for you to communicate 2 of AB ML1100 which is connected each other using 1764-NC01 using modbus RTU protocol.

Step for slave:

Step 1: From Contoller, Select channel configuration

Step 2: Select Channel 0 tab

Step 3: Choose "Modbus RTU Slave" driver and assign driver characteristics (select No handshaking).

Step 4: Enter Modbus data table file number for required Modbus function

Step 5: Enter data table size and type for each required file.

The data table file will be created automatically.

For Master:

Step 1: From Controller, Select channel configuration

Step 2: Select Channel 0 tab

Step 3: Choose "Modbus RTU Master" driver and assign driver characteristics. (select No handshaking).

Step 4: Create MSG instruction