Modbus communication can not be selected for this version AND modbus does not appear
As far as I am aware there are no modbus nodes that come pre-installed in the standard version of Node-RED.
Where are you running Node-RED are you sure the node you are looking for isnāt one you installed yourself? https://flows.nodered.org/?term=modbus&num_pages=1
I setup raspbian in raspberry pi rasbian has already node red but modbus does not appear
If it is the pre-installed version of Node-RED you are using an old version.
You need to flow the instructions here https://nodered.org/docs/hardware/raspberrypi
The version latest version v0.18.7
OK so you have the latest version of Node-RED.
No Modbus nodes are installed by default you need to install them.
If it fails to install what does it say in the logs?
pi@raspberrypi:~ node -v
v10.4.1
pi@raspberrypi:~ npm -v
6.1.0
pi@
@Hasan what steps have you taken to install the modbus nodes? They are not part of the default install of Node-RED - you have to install them yourself.
how?
ı setup just raspberry pi 3.
node red is already inside rasbian
please help following roots for node red
Node-RED does not come with anything related to modbus pre-installed.
If you want to do something with modbus you need to install some modbus nodes into Node-RED.
The first step is to identify what nodes you want to install. If you search the Flow Library for modbus youāll find a few different sets of nodes available: https://flows.nodered.org/?term=modbus&num_pages=1
For example: https://flows.nodered.org/node/node-red-contrib-modbus
To install that, you can either use the āManage Paletteā option in the node-red editor, or run the command npm install node-red-contrib-modbus
in the directory /home/pi/.node-red
and then restart Node-RED.
Also, the version of node red in raspbian is out of date. Update to the latest using the technique in
https://nodered.org/docs/hardware/raspberrypi