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 isn’t 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
pi@raspberrypi:~ npm -v
@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.
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 you’ll find a few different sets of nodes available: https://flows.nodered.org/?term=modbus&num_pages=1
To install that, you can either use the ‘Manage Palette’ 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.