node-red-contrib-yotta-gpio 1.0.1

Yotta GPIO API nodes for Node-RED

npm install node-red-contrib-yotta-gpio

Introduction

This Node-RED module provides a collection of custom nodes for communicating with distributed controllers and communication modules produced by Yottacontrol Co.. These nodes allow you to easily read from and write to various digital and analog inputs/outputs over Modbus using Node-RED.

Features

• Read Nodes: Read data from Digital Input (DI), Digital Output (DO), Analog Input (AI), and Analog Output (AO) pins.
• Write Nodes: Write data to DO and AO pins.
• Works with Modbus-compatible YottaControl modules.
• Designed to work in conjunction with the Modbus-Flex-Getter and Modbus-Flex-Write nodes provided by node-red-contrib-modbus

Installation

Run the following command in your Node-RED user directory (typically ~/.node-red):

npm install node-red-contrib-yottacontrol

Nodes Included

Read Nodes

• Read_DI
• Read_DO
• Read_AI
• Read_AO

These nodes are used to read data from YottaControl modules. The output is passed in msg.payload. When reading more than one point, msg.payload should be an array.

Write Nodes

• Write_DI
• Write_DO
• Write_AI
• Write_AO

These nodes send data to YottaControl modules. You need to configure:

• Model type (e.g., Yotta I/O module model)
• Output pin
• Modbus ID
• Quantity

Read Mode

DI/DO

 { value: msg.payload, 'fc': 1, 'unitid': 1, 'address': 0 , 'quantity': 1 } 

AI/AO

 { value: msg.payload, 'fc': 3, 'unitid': 1, 'address': 0 , 'quantity': 1 } 

Write node

DO

{value: msg.payload, 'fc': 5, 'unitid': 1, 'address': 0 , 'quantity': 1}

AO

{value: msg.payload, 'fc': 6, 'unitid': 1, 'address': 0 , 'quantity': 1}

Usage Tips

• Ensure all required fields are filled; otherwise, message construction may fail.
• When reading multiple channels, make sure msg.payload is in array format.
• Make sure Modbus ID and address correspond correctly with your hardware.