DCS800 or DCS550 with MODBUS TCP

Used drive Communication Module: RETA-01

Question: How many values should be exchanged?

• status word, actual value1 (speed), actual value2 (torque), control word, reference1 (speed) and reference value2 (torque):

  • communication Function Block in AC500 program: Use ACS_COM_MOD_TCP ACS_COM_MOD_TCP Communication for ACS / DCS Drives via MODBUS TCP, if PLC firmware is less than V2.4, else use ACS_COM_MOD_TCPx ACS_COM_MOD_TCPx Communication for ACS / DCS Drives via MODBUS TCP

  • control Function Block in AC500 program: DCS_DRIVES_CTRL_STANDARD ACS_DRIVES_CTRL_STANDARD Control of ACS Drives with ABB-Drives Profile

  • to exchange more than above mentioned values use additionally the following blocks:

    ACS_MOD_READ_N_PRM ACS_MOD_READ_N_PRM Read N Parameters from an ACS Drive via MODBUS RTU

    ACS_MOD_WRITE_N_PRM ACS_MOD_WRITE_N_PRM Write N Parameters to an ACS/DCS Drive via MODBUS RTU