Automation and Drives - SCE
T I A Training Document Page 134 of 147 Module
H01
Issued: 02/2008 Frequency Converter SINAMICS G120 on PROFIBUS DP and PROFINET
Preface Notes Startup with PROFIBUS Startup with PROFINET Program Example
6. CONTROL PROGRAM 'BUCKET ELEVATOR’ ON THE PROFIBUS DP/PROFINET
6.1 Assigning the Process Data for the SINAMICS G120
With the process data, the control words and the setpoints (PLC -> SINAMICS)
or the status words and the actual values (SINAMICS – PLC) can be transferred.
The structure of the process data (PZD) area is the same in the sequence of its elements (words)
for the two indicated interfaces by means of PROFIBUS DP and PROFINET.
Process Data 1 Process Data 2
Request message
(SPS -> SINAMICS)
Control word
(STW)
Main setpoint
(HSW)
Response message
(SINAMICS -> SPS)
Status word
(ZSW)
Main actual value
(HIW)
6.1.1 The Control Word (STW)