Node-red nodes to convert values to and from buffer/array. Supports Big/Little Endian, BCD, byte swapping and much more
Beckhoff TwinCAT ADS client library for Node.js (unofficial). Connect to a Beckhoff TwinCAT automation system using the ADS protocol from a Node.js app.
highlight.js syntax definition for Structured Text IEC 61131-3 language
A javascript library to communicate with Siemens S7 PLCs
A Node-RED node to interact with Siemens S7 PLCs