Ip Access Protection With Programmed Communication Connections - Siemens SIMATIC S7-CPs Manual

8 Further Notes on Operation
Points to note / restriction
Notice
S
No use of FB55 when using a CP with fault−tolerant S7 connections
If you configure fault−tolerant S7 connections via the CP, you cannot use FB55
for IP configuration of the CP.
You will find more detailed information on special features and use in fault−tolerant
systems in the section "FBs for programmed connections and IP configuration in"
in /10/.
8.12.3 IP access protection with programmed communication
connections
In principle, it is possible to set up communication connections using FB55 by
programming and at the same time by configuring IP access protection. Please
note the following point:
Notice
When configuring specified connections in STEP 7 / NCM S7, the IP addresses of
the partners are entered automatically in the IP-ACL (IP Access Control List).
The IP addresses of partners with unspecified connections (passive end points)
and of partners on programmed communication paths are not entered in the
IP-ACL. This means that communication with unspecified nodes is not possible if
IP access protection is activated.
How to configure IP access protection is described in the general part of this
manual, Part A.
B−48
CP 443-1 for Industrial Ethernet / Manual Part B
C79000-G8976-C223−06
Release 07/2010