S7 Dynamic Node for Node-RED

This is a dynamic Node-RED node designed for communication with Siemens S7 PLCs using the node-snap7 library. It allows you to read and write data from various addresses (inputs, outputs, memory), dynamically handle connection parameters (IP, rack, slot), and more.

Features

- Dynamic Connection: Supports dynamic connection to Siemens S7 PLCs by specifying IP, rack, and slot.
- Input Reading: Reads inputs based on specified addresses.
- Memory Read/Write: Reads and writes to memory addresses in the PLC.
- Output Writing: Supports writing to outputs by dynamically setting boolean values (true/false or 1/0).
- Custom Address Parsing: Handles custom address formats such as M0.1 for memory addresses.

Requirements

- Node-RED environment.
- Node.js (>= 12.x recommended).
- Siemens S7 PLC or compatible device.
- node-snap7 library.

Installation

To use this node, you must install the Node-RED contribution from the Node-RED palette or manually add it to your package.json:

`bash
npm install node-red-contrib-s7-dynamic.

$3

`json
{
"payload": {
"type": "input",
"ip": "192.168.0.1",
"rack": 0,
"slot": 1,
"addresses": [I1, I2, I3]
}
}
`

$3

`json
{
"payload": {
"type": "output",
"ip": "192.168.0.1",
"rack": 0,
"slot": 1,
"addresses": {
"Q0": true,
"Q1": false
}
}
}
`

$3

`json
{
"payload": {
"type": "memory",
"ip": "192.168.0.1",
"rack": 0,
"slot": 1,
"addresses": ["M0.1", "M10.0"]
}
}
``

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

Feel free to fork this repository, contribute to the code, and open pull requests with new features or bug fixes.

Authors

Eberson M. - Creator - EbersonM

Acknowledgements

Thanks to the developers of node-snap7 for the core library to interface with Siemens S7 PLCs.
Node-RED community for providing the platform for creating powerful IoT applications.