Siemens SIMATIC ET 200AL - Page 914

Connection resources
11.1 Connection resources of a station
Communication
228 Function Manual, 12/2017, A5E03735815-AF
Number of connection resources of a station
Table 11- 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 88 108 128 160 192
Max. additionally usable
connection resources by
plugging in CMs/CPs
32 40 84 128 160 192
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 1518-4PN/DP with a communications module CM 1542-1 and a
communications processor CP 1542-5.
● Maximum connection resources of the station:
384
● Available connection resources:
– CPU 1518-4 PN/DP: 192
– CM 1542-1: 64
– CP 1542-5: 16
– Total:
272
The setup provides 272 connection resources. By adding additional communications
modules, the station can support a maximum of 112 additional connection resources.