Siemens Simantic Net NCM for Industrial Ethernet S7 - Manual (Page 113)

Configuring Communication Connections
113
SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06
4.5.2 Specifying ISO-on-TCP Addresses
Address parameter
A connection is specified by the local and remote connection endpoint.
S
Local addresses:
Local IP address and local TSAP
(Transport Service Access Point)
S
Remote addresses:
Remote IP address and remote TSAP
ISO-on-TCP
connection
MAC
address A
Ethernet station B Ethernet station A
IP address
B
Remote
TSAP
Local
TSAP
Local
TSAP
Remote
TSAP
Figure 4-13 Sending and Receiving on One ISO-on-TCP Connection
The address parameters are configured with NCM S7 and saved in the CP
database. Modifications and extensions to the Industrial Ethernet network topology
do not therefore have any effect on the CPU user program.
Notice
When you configure the Ethernet CP and the Ethernet destination station, the
TSAPs of an ISO-on-TCP connection must cross match:
Remote TSAP (in Ethernet CP) = local TSAP (in destination station)
Local TSAP (in Ethernet CP) = remote TSAP (in destination station)