Hi all,

I am working with citect 6.0. can anybody explain in detail how driver works? for example if i am taking modbus data from slave address 3, how citect understand that it has to send query to modbus slave address no 3 and it has to read op register (where address 40001 goes that i write in tag editor?)

i have opened MODBUS.DBF file in which following Column are available. what is meaning of that?

TEMPLATE, UNIT_TYPE, RAW_TYPE, BIT_WIDTH, LOW, HIGH, COMMENT

Thanks in Advance
Bhargav Purohit

 

Hi Bhargav,

First thing I'd suggest is creating a free login at MyCitect, going to DriverWeb and downloading the latest version of the driver. The installer will put a Modbus.chm help file in the BIN directory which will answer most of your questions.

The short version is:

The Modbus address goes in the IODevices Form of project editor, in the address field.

The Tag address goes on in the Tag Form of the project editor, in the address field.

Never edit the .DBF files in the BIN directory!

If you know what you're doing you may edit some of the .DBF files in the project directory.