Application and functions
1.7 Performance data and configuration limits
CP 1243-8 IRC
22 Operating Instructions, 02/2018, C79000-G8976-C385-03
You will find further information on the functionality and configuration of the security functions
in the information system of STEP 7 and in the manual /11/ (Page 227).
Performance data and configuration limits
Number of CMs/CPs per station
In each S7-1200 station, up to three CMs/CPs can be plugged in and configured, of which a
maximum of one CP 1243-8 IRC.
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The CP can establish connections to up to 4 communications partners.
The partners can be linked redundantly.
When using the ST7 protocol, in addition to this, inter-station communication with up to 4
S7 stations can be operated via the master station.
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The CP can establish connections to up to 4 communications partners (S7 stations).
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1 connection resource is reserved for online functions.
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8 connection resources for S7 connections (BSEND/BRCV)
These connections are used for SINAUT ST7 communication.
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Max. 4 connections at the same time
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– 2 connection resources for PG connections
– 1 connection resource for OP connections
Number of data points for the data point configuration
The maximum number of configurable data points is 200.
Frame memory (send buffer)
The CP has a frame memory (send buffer) for the values of data points configured as an
event.
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