hello,
I have written the Modbus Code for 2 different functions(Digital input & Digital Output) using RTU mode with RS485 in which both the card is working fine if they work individually but whn i tried to work both the card (of different functions)simultaneously then while switching from one function to another then slave can't able to recognize the query after getting certain no. of queries also but some times it respond instantly .
So,where is the problem whether hardware is taking certain time for initiating while moving from one function to another.
Thanx,
Pakhi