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PAC320 with Modbus: What Addresses for Tags?

PAC320 with Modbus: What Addresses for Tags?

Modbus slave outputs (read only) automatically start at address 30001.

Modbus slave inputs (read/write) automatically start at address 40001.

Bit can then be .0 through .15

tag_address_4316-20240521-001101.jpg

 

The above Modbus Master is a Parker Interact Xpress HMI and shows the Interact Xpress Manager tag setup. The PAC is the Modbus slave.

In the PAC software:

pac_tag_names_4317-20240521-001101.jpg

 

Note the memory address  (ie %IE23) offset can be ignored. These are automatically mapped to 30001 and 40001 per Modbus.

 

keywords: variables, ModbusTCP

 

4/16/14jh