WALL IE, Industrial Ethernet Bridge and Firewall | Version 1 | 15.05.2017
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9.1
Solution in Step 7
Step 7 offers the possibility to access a CPU and to use an IP address other than that set in the project.
However, in order that the responses from the CPU can also be redirected back to the engineering
station in the WAN via the WALL IE, the WALL IE must be entered as the router for the CPU in the
project.
In order to be able to reach a CPU via an
alternative IP address, this can be entered in the
menu "PLC" in the dialog "Access address."
This address remains active until it is deleted in
the same dialog through "Reset".
This solution can only be used in the Basic NAT operating mode. In the case of NAPT with port
forwarding, only one CPU can be reached, as the Simatic Manager always accesses the CPU with the
non-adjustable port 102.
The search via the Siemens function "Accessible nodes" doesn't function through the WALL IE firewall.
