Figure 6-13 Dragging And Dropping The Micromaster 4 Profile; Figure 6-14 Selecting The Profibus Address - Siemens COMBIMASTER 411 Operating Instructions Manual

CONFIGURATION FOR S7 PLC
21. Select MICROMASTER 4 and drag and drop it onto the PROFIBUS in the
Hardware Diagram (see Figure 6-13 below).
Figure 6-13
A window for selecting the bus address now appears (see Figure 6-14).
Figure 6-14
22. Select the appropriate bus address from the scroll-down list.
23. Choose the appropriate data format; PPO3 or PPO1, or one of the custom
options for MICROMASTER 4.
PPO3 allows two process data words (PZD) corresponding to the control word and
frequency reference (outputs from the PLC to the inverter) and the status word and
actual frequency (inputs to the PLC from the inverter). PPO1 has four additional
data words that allow the inverter parameters to be read and changed. Other
formats allow additional PZD data to be sent and received, for example, if you want
to be able to read the motor current directly.
For non PPO formats word consistency is recommended. If whole consistency is
required the PLC program has to use the standard function blocks SFC14/SFC15
to read data from the inverter. The S7 commands L PIW, T PQW etc, are only
allowed with word consistency.
54
Dragging and Dropping the MICROMASTER 4 Profile
Selecting the PROFIBUS Address
PROFIBUS Communication Module
Issue 03/02
Operating instructions
6SE6400-5AV00-0BP0