This function block can be used to control DCS drives with ABB Drives profile using Modbus communication block like “DrvModbusTcp” or “DrvModbusRtu”.
Status Word (SW) is read from drive through Modbus communication block using DriveData interface. ⮫ “Structure: DrvDataType”
Control Word (CW) will be built by the function block according to the ABB drives profile state machine. CW will be sent via DriveData and the used communication block to the drive. Function block provides standard start/stop signals to control the drive and standard diagnosis signals are read from the drive.
The function block should be used for DCS drives using ABB drive profile for Modbus protocol only. The data transfer to the DCS drive is realized via the “IN_OUT” variable DriveData, which must be connected to “DrvModbusTcp” or “DrvModbusRtu” function block.