Application and functions
1.7 Configuration limits and performance data
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03
17
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For secure transmission of network analysis information safe from eavesdropping
For information on configuring the security functions, refer to the section Security
configuration(CP 1543SP-1) (Page 86).
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 /4/ (Page 120).
Configuration limits and performance data
Number of CPs per station
In each ET 200SP station, up to three special modules can be plugged in and configured;
this allows a maximum of two CP 154xSP-1 modules.
For details of the permitted special modules and the slot rules, refer to section Installing the
CP (Page 32).
Number of connections via Industrial Ethernet in total maximum of 32,
of which:
● S7: Max. 16
● TCP/IP: Max. 32
● ISO-on-TCP: Max. 32
● UDP: Max. 32
● Online connections of the engineering station (STEP 7): Max. 2
● TCP connections for HTTP
For HTTP access upp to 12 TCP connection resources are available that are used by one
or more Web browsers to display data of the CP.
● PG/OP connections (HMI): In total maximum of 16,
of which:
– Connection resources for PG connections: Max. 16
– Connection resources for OP connections: Max. 16
Frame memory (send buffer)
Only CP 1542SP-1 IRC
The CP has a frame memory (send buffer) for the values of data points configured as an
event.
The volume of the send buffer is divided equally among all configured communications
partners.
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