Connection resources
11.3 Display of the connection resources
Communication
Function Manual, 12/2017, A5E03735815-AF
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The warning triangle in the column of the dynamic station resources is therefore displayed
because the sum of the maximum available connection resources of CPU, CP and CM (=
294 connection resources) exceeds the station limit of 256.
Note
Available connection resources exceeded
STEP
7 signals the exceeding of the station-specific connection resources with a warning.
To make full use of the connection resources from the CPU, CP and CM, either use a CPU
with a higher maximum number of available station
-specific connection resources or reduce
he number of communications connections.
② Module-specific connection resources
The columns of the module-specific connection resources provide information about the use
of resources on the CPUs, CPs and CMs of an automation system:
The display is per module and not per interface.
In the example, the CPU makes 128 connection resources available, of which 47 are already
in use and a further 81 still available.
The used resources are divided up as follows:
● 6 resources for HMI communication
● 2 resources for S7 communication
● 39 resources for Open User Communication
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