Protocol libraries

go-s7comm

Siemens S7 client: read and write DBs, inputs, outputs and markers, discovery and SZL diagnostics.

Install

go get github.com/otfabric/go-s7comm

Siemens S7: Classic S7 communication with Siemens PLCs, for reading and writing data blocks, inputs, outputs and markers.

The README on GitHub has the full feature list, examples and changelog.

Siemens S7 command-line client for ISO-on-TCP (port 102).

COTP TP0 transport service over RFC 1006, plus a full X.224 TPDU codec.

go get github.com/otfabric/go-cotp

TPKT framing for RFC 1006 and RFC 2126 transport profiles.

go get github.com/otfabric/go-tpkt

Fixture-driven Snap7 servers (native and pure Python) for testing S7 clients.