Communication
11.2 PROFINET
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
913
Note
Note that DONE, NDR, and ERROR are set for one execution only.
Restricted TSAPs and port numbers for passive ISO and TCP communication
If you use the "TCON" instruction to set up and establish a passive communications
connection, the following port addresses are restricted and should not be used:
● ISO TSAP (passive):
– 01.00, 01.01, 02.00, 02.01, 03.00, 03.01
– 10.00, 10.01, 11.00, 11.01, ... BF.00, BF.01
● TCP port (passive): 5001, 102, 123, 20, 21, 25, 34962, 34963, 34964, 80
● UDP port (passive): 161, 34962, 34963, 34964
Communication with a programming device
A CPU can communicate with a STEP 7 pr
o-
gramming device on a network.
Consider the following when setting up communications between a CPU and a programming
device:
● Configuration/Setup: Hardware configuration is required.
● No Ethernet switch is required for one-to-one communications; an Ethernet switch is
required for more than two devices in a network.
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