Siemens SIMATIC ET 200iSP User Manual

4.9 Direct data exchange via PROFIBUS DP
Requirements
The ET 200iSP can be used as a sender (publisher) for direct data exchange (direct
communication). No con󹪝guration is required for this.
Of course the DP master used must support direct data exchange. Additional information can be
found in the description of the DP master.
Operating principle
Direct data exchange is also characterized by the fact that PROFIBUS DP devices "listen in" to
which data a DP device sends back to its DP master. By this mechanism the "listener" (receiver)
can directly access changes of input data of remote DP devices.
When con󹪝guring in STEP 7 you de󹪝ne, via the respective I/O input addresses, to which address
range of the receiver the desired data of the sender is to be read.
Example
The 󹪝gure below shows an example of which direct data exchange "relations" you can con󹪝gure
with a ET 200iSP as sender and which devices can "listen in" as possible receivers.
&38[[DV'3
PDVWHU
'3PDVWHUV\VWHP'3PDVWHUV\VWHP
&38[[DV'3
PDVWHU
)LHOGEXV
56,6FRXSOHU
352),%8656,6
'3GHYLFH
&38[DV
'3GHYLFH
(7L63(7L63(7L63
666
352),%86'3
Figure 4-5 Example of direct data exchange
Con󹪝gurations (principle)
4.9 Direct data exchange via PROFIBUS DP
ET 200iSP
76 Operating Instructions, 11/2022, A5E00247483-AK

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English