Modbus comm. between DCS ABB freelance and Yaskawa VSD

A

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andy

sorry if i am asking a simple question to y'all. im a new eng and currently working on this.

i need to monitoring the VSD by yaskawa from my ABB Freelance Dcs and connect using RS-485, i've got transmit n receive value in the dcs but there are have big differential plus i've got a wrong value that appear in the VSD display. when i try to stimulate using Modsim to my DCS i'e got the actual value that key-in from modsim.

i do not what to do since this yaskawa vendor is not willing to help plus i have to search all the parameter required by myself with looking into their manual.
 
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