ACS800 with MODBUS RTU

Used drive Communication Module: RMBA-01

Question: How many values should be exchanged?

• READ / WRITE variables: status word, actual value1 (speed), actual value2 (torque), control word, reference1 (speed), reference value2 (torque)
  • communication profile in drive parameters: ABB Drives classic
  • communication Function Block in AC500 program: ACS_COM_MOD_RTU ACS_COM_MOD_RTU Communication for ACS / DCS Drives via MODBUS RTU
  • control Function Block in AC500 program: ACS_DRIVES_CTRL_STANDARD ACS_DRIVES_CTRL_STANDARD Control of ACS Drives with ABB-Drives Profile
  • scaling: ACS_REF_SCALING (optional) ACS_REF_SCALING Scaling for ACS / DCS Reference and Actual Values
• 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