Fieldbus control143Setting up communication through the Standard Modbus LinkAn RMBA-01 Modbus Adapter installed in slot 1 or 2 of the drive forms an interfacecalled the Standard Modbus Link. The Standard Modbus Link can be used forexternal control of the drive by a Modbus controller (RTU protocol only).Before configuring the drive for Modbus control, the adapter module must bemechanically and electrically installed according to the instructions given in thehardware manual of the drive, and the module manual.The following table lists the parameters, which need to be defined when setting upcommunication through the standard Modbus link.After the communication parameters in group 52 have been set, the drive controlparameters (section The fieldbus control interface on page 147) must be checkedand adjusted where necessary.Parameter AlternativeSettingsSetting forControl throughStandardModbus LinkFunction/InformationCOMMUNICATION INITIALISATION98.02 NOFIELDBUSADVANTSTD MODBUSSTD MODBUS Initializes communication between drive(Standard Modbus Link) and Modbus-protocol controller. Activatescommunication parameters in group 52.COMMUNICATION PARAMETERS52.01 1…247 – Specifies the station number of the driveon the Standard Modbus Link.52.02 600120024004800960019200– Defines the communication speed for theStandard Modbus Link.52.03 ODDEVENNONE1STOPBITNONE2STOPBIT– Selects the parity setting for the StandardModbus Link.
