Configuration Options
3-27
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
3.6
Direct data exchange on the PROFIBUS DP
Prerequisites
•
The ET 200S can be used as the sender (publisher) for direct communication.
•
The DP master being used must, of course, also support direct communication.
You will find information on this in the description of the DP master.
Principle
Direct communication is characterized by the fact that PROFIBUS DP nodes
monitor the data sent back by a DP slave to its DP master.
By means of this mechanism the monitoring node (recipient/subscriber) can
directly access changes to the input data of remote DP slaves.
During configuration in
STEP 7
you specify by means of the relevant I/O input
addresses the address area of the recipient in which the data of the sender is to be
placed.
Example
Figure 3-5 gives an example of the direct-communication relationships you can
configure with an ET 200S as the sender and which nodes as possible recipients
can monitor data sent back by DP slaves to the DP master.
PROFIBUS
CPU 31x-2 as
DP master 1
CPU 31x-2
DP slave
DP master
system 1
DP master
system 2
CPU 31x-2 as
DP master 2
CPU 31x
-
2
as
DP slave
ET 200S
ET 200S
ET 200S
Figure 3-5
Direct Communication with the IM151-1 HIGH FEATURE
Содержание SIMATIC ET 200S
Страница 42: ...Product Overview 1 16 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 64: ...Brief Instructions on Commissioning ET 200S 2 22 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 112: ...Configuration Options 3 48 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 232: ...Commissioning and Diagnostics 6 72 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 244: ...General Technical Specifications 7 12 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 274: ...Interface Modules 8 30 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 538: ...4 IQ SENSE 13 18 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 564: ...Address Space of the Input and Outputs of the ET 200S C 4 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 574: ...Response Times D 10 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 580: ...Special Measures for Interference Free Operation F 4 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 600: ...Product Information on the Use of subassemblies modules in a Zone 2 Hazardous Area 2 A5E00352937 02 ...