s7

Golang implementation of Siemens S7 communication protocol

Functions

AG:

• Read/Write Data Block (DB)
• Read/Write Merkers(MB)
• Read/Write IPI (EB)
• Read/Write IPU (AB)
• Read/Write Timer (TM)
• Read/Write Counter (CT)
• Get Block Info

PG:

• Hot start/Cold start / Stop PLC
• Get CPU of PLC status
• List available blocks in PLC
• Set/Clear password for session
• Get CPU protection and CPU Order code
• Get CPU/CP Information
• Read/Write clock for the PLC

Supported communication

• TCP
• Serial (PPI, MPI) (under construction)

References

• libnodave http://libnodave.sourceforge.net/
• snap7 http://snap7.sourceforge.net/
• tarm serial library https://github.com/tarm/serial
• Simatic Open TCP/IP Communication via Industrial Ethernet from Siemens(doku)
• SIMATIC NET FDL-Programmierschnittstelle (doku)

Original implementation

https://github.com/robinson/gos7