README.asciidoc

libs7comm

A simplistic (attempt at an) implementation of the S7 communications protocol, used to communicate with Siemens PLCs.

This work is inspired by the existing libnodave code, which is a little hard to follow.

Objectives

To be able to read and write variables from/to a Siemens S7-300.

Target audience
---------------
Me. Just me. Don't use this, it'll turn your hair purple.

Build requirements
-------------------
 * libpcap-dev
 * libcpputest-dev
 * gcc, g++, make

References

• http://snap7.sourceforge.net

• https://plc4x.incubator.apache.org/protocols/s7/s7comm.html

• http://gmiru.com/article/s7comm/

• https://www.promotic.eu/en/pmdoc/Subsystems/Comm/PLC/LOGO.htm

• Wireshark epan/dissectors/packet-s7comm.c