536
edits
Changes
Modbus and Bluetooth data sending to Node-RED (view source)
Revision as of 09:42, 13 January 2023
, 09:42, 13 January 2023no edit summary
To test the configuration, '''deploy''' the nodes again and send the message by clicking on the '''inject''' node.
To test the configuration, '''deploy''' the nodes again and send the message by clicking on the '''inject''' node.
==Modbus Data to Server via MQTT protocol==
In this section, we are going to upload Modbus data to server on Node-RED. First of all, we are going to need Modbus data source, in this example we are using the same device as Modbus TCP Slave and Master
To start with, navigate to '''Services -> Modbus -> Modbus TCP slave'''. Press '''enable''' to enable the instance and you can leave everything else as '''default''':
[[File:Networking rutos manual modbus modbus tcp slave v2.png|border|800px|class=tlt-border]]
Next, navigate to '''Services -> Modbus -> Modbus TCP master'''. Adjust settings here accordingly:
*Enabled: on
*Name: Local_slave (input any preferred name)
*Slave ID: 1
*IP address: 127.0.0.1 (since we are using local TCP slave - input the IP address if you are using external device as Modbus Slave)
*Port: 502
Add new request and adjust settings according to your needs. For this example, we are going to pull device name from the registers, so our configuration looks like this:
*Name: test (input any preferred name)
*Data type: ASCII (to get a string of text)
*Function: Read holding registers (3)
*First register number: 72
*Register count/values: 3
*Brackets: use brackets
*Press enable to enable the Modbus request
[[File:Tcp master nodered.png|border|1000px|class=tlt-border]]