Siemens SIMATIC ET 200AL, System Manual

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Connection resources
12.1 Connection resources of a station
Communication
Function Manual, 05/2021, A5E03735815-AJ
393
Number of connection resources of a station
Table 12- 1 Maximum number of connection resources supported for some CPU types
Connection resources of a
station
1511
1511C
1512C
1513
1515 1516 1517 1518
Maximum connection re-
sources of the station
96 128 192 256 320 384
of which reserved 10
of which dynamic 86 118 182 246 310 374
Connection resources of the
CPU
64 88 108 128 288 320
Max. additionally usable
connection resources by
plugging in CMs/CPs
32 40 84 128 32 64
Additional connection re-
sources CM 1542-1
64
Additional connection re-
sources CP 1543-1
118
Additional connection re-
sources CM 1542-5
40
Additional connection re-
sources CP 1542-5
16
The number of connection resources that a CPU or a communication module supports is
specified in the device manuals in the Technical Specifications.
Example
You have configured a CPU 1516-3 PN/DP with a CM 1542-1 communication module and a CP
1542-5 communication processor.
•
Maximum connection resources of the station: 256
• Available connection resources:
– CPU 1516-3 PN/DP: 128
– CM 1542-1: 64
– CP 1542-5: 16
– Total: 208
The setup provides 208 connection resources. By adding further communication modules,
the station can support a maximum of 48 additional connection resources.