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Paglikha ng isang Node-RED na lalagyan
Sinasaklaw ng gabay na ito ang pag-install ng isang Node-RED container sa Pixsys WebPanel “WP” and TouchController “TC” series.
Displaying the Node-RED dashboard on the screen is possible only on WP – WebPanel devices and on TC – TouchController panels with the “WebVisu” license only. On TouchController – TC panels with a “TargetVisu” or “TargetVisu + WebVisu” license, it is not possible to display the Node-RED dashboard.
Mag-login
Access the device in configuration mode by holding down the STOP button that appears at startup.
I-access ang configuration console sa pamamagitan ng paglalagay ng mga sumusunod na kredensyal:
Username: gumagamit
Password: 123456
If the device IP is known, it is also possible, and recommended, to access the configuration console from a browser on the user’s PC by accessing the address: https://device-IP-.9443/ at gamit ang mga kredensyal sa itaas.
Paglikha ng folder para sa Node-RED
Ang container na ia-activate ay nangangailangan ng espasyo para mag-imbak ng data ng user.
For this purpose, in the devices, there is a folder /data/user.
Using WinScp or another sFTP access software, create a folder node-red within the path /data/user, following the steps below:
- Open WinSCP, connect to the device using the IP and credentials already used to access the configuration console, and choose /data/user
- From the Menu “New” select the option “Directory…”.
- Create the folder node-red, enabling all “R/W/X” permits:
The same process is also possible by SSH access and using the following prompts:
mkdir -p /data/user/node-red
chmod a+rwx /data/user/node-red
Download of the container
I-access ang “Podman containers” sa Menu bar:
Select the option“Download new image” in the menu to the right with the three-dot icon
Select the search area “docker.io“
Type “node-red” in “Maghanap para sa”
Select official image “docker.io/nodered/node-red”:
Then press “Download” and the download of the image will start.
This is a several hundred Mb file; depending on the internet connection, it may take several minutes.
Kapag kumpleto na ang pag-download, magiging posible na view ang larawan sa device:
Paggawa ng lalagyan
In the “Containers” Tab, press the “Create container” button. A menu will open to configure the container you want to create.
Fill in the “Name” field with a name of your choice, replacing the automatically generated random one.
Tab Details:
From the “Image” box, choose the downloaded image as described in the previous chapter:
Configure “Memory limit” to 128 or 256 MB.
“Restart Policy” set to “Always” sets the container to start automatically and be restarted even in the event of a user-commanded shutdown.
Tab Integration:
Configure port mapping to expose port 1880 in both TCP and UDP, and map the Container Path /data, visible from node-red, in Host Path /data/user/node-red
Tab Health check:
This Tab defines the control checks on the correct operation of the container and how it will behave in case of an error.
The image below shows the default parameters:
Sa stage, press “Create and run” and wait for the creation of the container.
Pagsubok sa lalagyan
When the container creation procedure is finished, the “Containers” list will display the new running container (State: Running):
Open a browser on PC and go to the page: http://device-IP.1880
Paggawa ng dashboard
Binibigyang-daan ng Dashboard ang Node-RED na magpakita/mag-publish ng dynamic web pahina.
Install “node-red-dashboard”, opening the Menu Manage palette:
Maghanap para sa node-red-dashboard within the tab Install
Wait for the installation to be completed, and then log in to the console and import the Flow entered at the end of the guide from the menu Import:
**Ito si example code with no real purpose.
NB for the use of Node-RED and the Dashboard, please refer to the documentation available online.
Kapag na-import na ang code, magbibigay ito ng proyekto tulad ng sumusunod:
Pindutin 
upang i-compile at simulan ang proyekto.
Opening page http://device-IP.1880/ui, the result will look like the following:
Pag-configure ng panel upang ipakita ang dashboard
At this point, for panels that allow it, access the menu WP Settings, then Main application settings, and enter URL http://localhost.1880/ui
Use the term localhost or IP 127.0.0.1 to make the browser access the device itself, regardless of its actual IP.
Upon reboot, the device will show the full-screen Node-RED Dashboard.
Exampang daloy
The following code is the text to be imported as a Flow in Node-RED:
[{
“id”: “1e6b97b5.687fd8”,
“type”: “tab”,
“label”: “Dashboard”,
“disabled”: false,
“info”: “”
},
{
“id”: “ 7c8 f 99d9.196b98”,
“type”: “ui_text”,
“z”: “1e6b97b5.687fd8”,
“group”: “dd4567b9.6a4c18”,
“order”: 1,
“width”: “12”,
“height”: “1”,
“name”: “Title”,
“label”: “Dashboard – Random Data Display”,
“format”: “{{msg.payload}}”,
“layout”: “col-center”,
“x”: 330,
“y”: 120,
“wires”: [] },
{
“id”: “2e4a56f8.cfa23a”,
“type”: “ui_gauge”,
“z”: “1e6b97b5.687fd8”,
“name”: “Random Gauge”,
“group”: “dd4567b9.6a4c18”,
“order”: 2,
“width”: “6”,
“height”: “6”,
“gtype”: “gage”,
“title”: “Random Value”,
“label”: “ %”,
“format”: “{{value}}”,
"min": "0",
"max": "100",
“colors”: [“#00b500”,”#e6e600”,”#ca3838”],
“seg1”: “30”,
“seg2”: “70”,
“x”: 320,
“y”: 240,
“wires”: [] },
{
“id”: “3b9ddefd.32b9d”,
“type”: “ui_chart”,
“z”: “1e6b97b5.687fd8”,
“name”: “Time-based Chart”,
“group”: “dd4567b9.6a4c18”,
“order”: 3,
“width”: “6”,
“height”: “6”,
“label”: “Random Time Chart”,
“char tType”: “line”,
“legend”: “false”,
“xformat”: “HH:mm: ss”,
“interpolate”: “linear”,
“nodata”: “”,
“ymin”: “0”,
“ymax”: “100”,
“removeOlder”: 1,
“removeOlderPoints”: “”,
“removeOlderUnit”: “3600”,
“cutout”: 0,
“useOneColor”: false,
“colors”: [“#00b500”,”#e6e600”,”#ca3838”],
“outputs”: 1,
“useDifferentColor”: false,
“x”: 600,
“y”: 240,
“wires”: [] },
{
“id”: “ 74b1ae f 8.e7e0d8”,
“type”: “function”,
“z”: “1e6b97b5.687fd8”,
“name”: “Generate Random Data”,
“func”: “msg.payload = Math.floor(Math.random() * 100);\nreturn msg;”,
“outputs”: 1,
“noerr”: 0,
“initialize”: “”,
“finalize”: “”,
“libs”: [],
“x”: 130,
“y”: 240,
“wires”: [
[
“2e4a56f8.cfa23a”,
“3b9ddefd.32b9d”
] ] },
{
“id”: “e0e9bd3c.a8ae2”,
“type”: “inject”,
“z”: “1e6b97b5.687fd8”,
“name”: “”,
“props”: [
{
“p”: “payload”
}
],
“repeat”: “1”,
“crontab”: “”,
“once”: true,
“onceDelay”: 0.1,
“topic”: “”,
“payloadType”: “date”,
“x”: 130,
“y”: 160,
“wires”: [
[
“74b1ae f 8.e7e0d8”
] ] },
{
“id”: “dd4567b9.6a4c18”,
“type”: “ui_group”,
“z”: “”,
“name”: “Random Data”,
“tab”: “fe9b4293.8df8e”,
“order”: 1,
“disp”: true,
“width”: “12”,
“collapse”: false
},
{
“id”: “fe9b4293.8df8e”,
“type”: “ui_tab”,
“z”: “”,
“name”: “Main Dashboard”,
“icon”: “dashboard”,
“order”: 1,
“disabled”: false,
“hidden”: false
}
]
Mga Tala / Update
PIXSYS srl
www.pixsys.net
sales@pixsys.net – support@pixsys.net
online na tulong: http://forum.pixsys.net
via Po, 16 I-30030
Mellaredo di Pianiga, VENEZIA (IT)
Tel +39 041 5190518
200525
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