6 Process data channel
The process data channel is used for real-time communication. This channel is divided into two
telegram sections:
PZD1: Control word (STW) /Status word (ZSW) – instrument control
The control word and the status word are used to control the amplifier and monitor the
amplifier's status.
PZD2-6: Setpoint / actual values depending on the operating mode.
Setpoints and actual values such as position, velocity and current are exchanged in
this section.
The availability of a process data channel is determined in the PROFIDRIVE drive profile. The
data that can be transferred is defined according to the operating modes (➜ # 27, PNU 930:
Selection Switch for Operating Modes),. The process data that are used are determined in such a
way that the real-time capability of this channel is optimally used.
In this chapter the instrument control is described first, and then the functions and details of each
operating mode.
S300-S400-S600-S700 PROFIBUS | 6 Process data channel
Kollmorgen | kdn.kollmorgen.com | December 2019 37
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