Siemens Simatic S7-1500 - Internal Communication between Linux and CPU

Commissioning in STEP 7
5.4 Communication between Linux and CPU
CPU 1505SP (F) Ready4Linux Version 2.7
48 Operating Instructions, 05/2019, A5E46864285-AA
5.4.1 Internal communication between Linux and CPU
Introduction
The S7-1500 Software Controller supports open communication (OUC) via the assigned
PROFINET interfaces in the full scope of an S7-1500 hardware CPU.
In addition, the S7-1500 Software Controller supports open communication with Linux
applications, and with communication partners via the runtime communication interfaces with
the following protocols:
● TCP
● ISO-on-TCP
● UDP
The usual program blocks for open communication can be used for this purpose:
● TSEND_C, TRECV_C
● TMAIL
● TRESET
● TCON/TDISCON/TSEND/TRCV
Note
T_CONFIG instruction
Do not use an all
-zero address for calls over NTP. Calls with all-zero addresses result in
error "C080_D200".
Utilized interface
The CPU uses the runtime communication interfaces (HW_ID 140 or HW_ID 0) to configure
OUC connections. For this purpose, enter the system constant <PC Communication
Interface> in the relevant location in the data block for the connection data.