Siemens S7-300 - Configuring ISO Transport Connection Properties; Specifying ISO Transport Addresses

Configuring communications connections
5.4 Configuring ISO transport connection properties
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
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5.4
Configuring ISO transport connection properties
5.4.1
Specifying ISO transport addresses
Address parameters
An ISO connection is specified by the local and remote connection endpoint.
● Local addresses:
Local MAC address and local TSAP
(Transport Service Access Point)
● Remote addresses:
Remote MAC address and remote TSAP
Note
The TSAPs of an ISO transport connection must match up as follows:
Remote
TSAP (on Ethernet CP) = local TSAP (in destination station);
Local TSAP (on Ethernet CP) = remote TSAP (in destination station);
Configuring addresses
STEP 7 displays proposed values for the relevant local and remote address information. If
necessary, you can set the TSAPs individually.
TSAP format
ISO transport connections have a TSAP length of 1 to 16 bytes. When you are entering
values, the current length is displayed automatically (visible display: 16 ASCII characters).
Local and remote TSAPs can be entered as hexadecimal values or as an ASCII string.
● If you enter the TSAP as an ASCII string, the characters are also displayed in
hexadecimal format.