I am trying to use an Scadapack 350 to control an ABB ACS550 VFD through the modbus RTU but have limited knowledge of Scadapack. I am ok with the VFD and its wiring and modbus registers. I have the telepace software and get it communicating with my computer but have only program an Allen Bradley plc before. What i need is to be able to read and write to the VFD register to control and read infomation from it. Anyone one here familar with Scadapack?