i ran into this r485 problem as well. My device is a v130 33t2, no extra cards.
My application needs only very few modbus rtu rs485 readings. After that i want to return to the normal communication with visilogic pc.
So I am wondering: Is it possible in ladder to "undo" the modbus initialisation? Or overwrite it somehow. I tried to do this with overwriting some SI and SB's, related to com1 status and settings.
An example of my effort: (disclaimer:-) i tried a lot, even if its not logical to do so..
doubts about the modbus vision 130 communication cable
in Vision & Samba PLC + HMI Controllers & VisiLogic Software
Posted
Hello,
i ran into this r485 problem as well. My device is a v130 33t2, no extra cards.
My application needs only very few modbus rtu rs485 readings. After that i want to return to the normal communication with visilogic pc.
So I am wondering: Is it possible in ladder to "undo" the modbus initialisation? Or overwrite it somehow. I tried to do this with overwriting some SI and SB's, related to com1 status and settings.
An example of my effort: (disclaimer:-) i tried a lot, even if its not logical to do so..