Getting Started with Modbus RTU for Inverter Drives SMV, SCF, MC drives

Contained herein is the basic information for setting up Lenze AC Tech Inverter (SMV, SCF, MC) and PositionServo drives for Modbus RTU communication.

For detailed information on the Modbus option module, refer to the product's Modbus Communication Reference Guide (SMV: CMVMB401, PositionServo: P94MOD01, SCF: RG-SFMOD, MC: RG-MCMOD, MCH: RG-MHMOD).

Topics discussed in this application note include RS232, RS485, cabling, number of masters and slaves, termination, function codes and register numbering.