Siemens SINAMICS G120C DP

5 Functional Mechanisms of this Application
5.1 Functionality of process data exchange
SINAMICS G120 DP at S7-1200
Entry-ID: 70155469, V1.4, 07/2018
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5.1.5 FB 11 “Process_Data”
This FB shows the access to the process data with the use of the “DPRD_DAT” /
“DPWR_DAT” instructions. It is called up cyclically in OB1.
Figure 5-5: FB “Process_Data”
Table 5-1: Interface of the “Process_Data” FB
Parameter
Data type
Start
value
Description
Input parameters
RD_HW-ID
HW_SUBMODULE
-
Decisive hardware identifier for reading
data from a DP standard slave /PROFINET
IO device.
When selecting the frame type in the
properties of the SINAMICS drive in the
TIA Portal, STEP 7 creates a system
constant which corresponds to this
identifier. Enter this system constant here.
It is symbolically displayed to you in the
dropdown list when entering the
parameters.
WR_HW-ID
HW_SUBMODULE
-
Decisive hardware identifier for writing data
to a DP standard slave /PROFINET IO
device.
When selecting the frame type in the
properties of the SINAMICS drive in the
TIA Portal, STEP 7 creates a system
constant which corresponds to this
identifier. Enter this system constant here.
It is symbolically displayed to you in the
dropdown list when entering the
parameters.
control_word
Word
16#047E
Control word of SINAMICS G120