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I have 3 different VFD brands I would like to control using Modbus RTU. I have a Prosoft MVI46-MCM card in a SLC 5/04 rack. I have successfully tested this card using the sample program, but am having difficulty understanding how to configure the Modbus commands for drive control.
The drives I am using are Reliance MD60, AC Tech MC1000, and Hitachi WJ200.
I have set up the drives using 9600 baud, No parity, 8 bits, 2 stop bits due to requirements of the Ac Tech drive.
The drive parameters are OK, I believe that the MVI46-MCM setup is OK, Port1 settings are OK, but I am having trouble setting up the Command list.
If anyone has used this card and is willing, I could use some help or sample code for a similar application. It seems like I am missing something very basic.
Thanks.
The drives I am using are Reliance MD60, AC Tech MC1000, and Hitachi WJ200.
I have set up the drives using 9600 baud, No parity, 8 bits, 2 stop bits due to requirements of the Ac Tech drive.
The drive parameters are OK, I believe that the MVI46-MCM setup is OK, Port1 settings are OK, but I am having trouble setting up the Command list.
If anyone has used this card and is willing, I could use some help or sample code for a similar application. It seems like I am missing something very basic.
Thanks.