Modbus/Tcp - Communication Profiles; Contents Of This Chapter; Communication Profiles - ABB FMBT-21 User Manual

Modbus/TCP – Communication profiles 39
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Modbus/TCP – Communication profiles

Contents of this chapter

This chapter describes the communication profiles used in the communication between
the Modbus/TCP client, the adapter module and the drive.

Communication profiles

Communication profiles are ways of conveying control commands (Control word,
Status word, references and actual values) between the Modbus client and the drive.
With the FMBT-21 adapter module, the Modbus/TCP network may employ either the
ABB Drives profile or one of two Transparent modes for 16-bit and 32-bit words
respectively. For the ABB Drives profile, data is converted by the adapter module into
the native profile (eg, DCU or FBA). For the Transparent modes, no data conversion
takes place.