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Communication between multicode reader O2I1xx and Siemens Simatic S7
4
Ethernet connection via TCP protocol
3
Principles
3.1
The data of the TCP connection is transmitted as a data flow, i�e� there is no
defined start or end character on the protocol level�
The returned data is received byte for byte and stored in the receive buffer�
For communication via Ethernet, all TCP protocol compatible Ethernet CPs can be
used�
However, the different selection of the Siemens communication blocks when using
controllers of the 300 or 400 series is to be taken into account�
The communication was tested with a CPU 414-2DP and a CP 443-1�
Set-up of the multicode reader
3.2
Select Global device settings → Process interface → Selection of the process
►
interface → TCP/IP.