Distribution Of The S7 Connections - Siemens SIMATIC ET 200S Manual

Functions of the IM 151-7 CPU

Distribution of the S7 connections

The distribution of the S7 connections of the CPUs are shown in the table below:
Table 8-12 Distribution of the S7 connections
Communication utility
PD communication
OP communication
S7 basic communication
S7 communication
Other communication
connections (e.g. via
CP 343-1 with data
lengths u 240 byte)
Routing of PD functions
(only for IM 151-7 CPU
with DP master module)
Global data
communication
8-32
So that the assignment of the S7 connections does not
depend solely on the sequence in which the various
communication utilities arise, S7 connections can be reserved
for these utilities.
For the PD and OP communication, at least one S7
connection is reserved for each as a preassignment.
The table below and the technical data show the S7
connections that can be adjusted and the presettings for the
IM 151-7 CPU. A "redistribution" of the S7 connections is set
up in STEP 7 when the CPU is parameterized.
The available S7 connections that have not been reserved for
a specific utility (PD/OP communication, S7 basis
communication) are assigned for this purpose.
The CPUs make available 4 connections for routing from PD
functions. These connections are additional to the S7
connections.
This communication utility does not use S7 connections.
Distribution
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04