homebridge-plc
Homebridge plugin for SIEMENS Step7 and compatible PLCs. (https://github.com/homebridge)
s7client
Hi level API for node-snap7 to communication with Siemens S7 PLCs
node-snap7js
A pure JavaScript implementation of Snap7 client for communicating with Siemens S7 PLCs. This node is a port of Sharp7, a Siemens S7 protocol driver, originally based on Snap7.