This repository contains a Node-RED module with nodes to initialize the CAN interface on a CC100 and send CANOpen NMT protocols.
This Node-RED package works with alpine based docker containers using the apk package manager.
It has been tested the following docker images:
To use the CAN interface of the cc100 the flag --network=host has to be used in the docker run command, which makes the port forwarding obsolete.
docker run -d \
--name node-red \
--restart always \
--privileged=true \
--user=root \
--network=host \
-v node_red_user_data:/data \
nodered/node-red
To install the module in Node-RED use the palette or npm i @wago-gmbh/cc100-canbus.
All nodes use the interface can0 as default. To use a different interface change the name of the interface in the node properties.
Initializes the CAN interface on the device with the given bitrate.
Input: Bitrate of the can network as integer
Output: Command executed by the node as string
Forces the addressed device to transit to the opertaional state. Flow has to be deployed after each initialization of the CAN interface.
Input: Address of the device to be addressed as integer.
Forces the addressed device to transit to the stopped state. Flow has to be deployed after each initialization of the CAN interface.
Input: Address of the device to be addressed as integer.
Forces the addressed device to transit to the pre-opertaional state. Flow has to be deployed after each initialization of the CAN interface.
Input: Address of the device to be addressed as integer.
Forces the addressed device to transit to reset. Flow has to be deployed after each initialization of the CAN interface.
Input: Address of the device to be addressed as integer.
Forces the addressed device to transit to reset communications. Flow has to be deployed after each initialization of the CAN interface.
Input: Address of the device to be addressed as integer.
To address all devices on a network instead of a specific device use 0 as address.
The CAN interface needs to be initialized, before the other nodes are deployed.
When the CAN interfaced is initialized again after a reboot of the device, the flow has to be deployed again.
The can-initialize node can only be used once to set up the CAN interface. To change the bitrate the device has to be rebooted.
For recieving and sending CAN messages node-red-contrib-socketcan can be used. The name of the interface on the cc100 ist can0. The enabling of the interface is done by the canbus-initialize node.
An example flow using 500000 as a bitrate and addressing device 10 with the NMT commands.
[
{
"id": "f6f2187d.f17ca8",
"type": "tab",
"label": "Flow 1",
"disabled": false,
"info": ""
},
{
"id": "58540408bfda88c1",
"type": "canbus-initialize",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 380,
"y": 100,
"wires": [
[
"c426c59f83e55fbc"
]
]
},
{
"id": "5c4fdeb911b1908c",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "500000",
"payloadType": "num",
"x": 170,
"y": 100,
"wires": [
[
"58540408bfda88c1"
]
]
},
{
"id": "c426c59f83e55fbc",
"type": "debug",
"z": "f6f2187d.f17ca8",
"name": "debug 1",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "false",
"statusVal": "",
"statusType": "auto",
"x": 600,
"y": 100,
"wires": []
},
{
"id": "d69aa36bf15f1ffe",
"type": "canbus-pre-opperational",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 410,
"y": 220,
"wires": []
},
{
"id": "36dd2a984bed6bd6",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "10",
"payloadType": "num",
"x": 170,
"y": 220,
"wires": [
[
"d69aa36bf15f1ffe"
]
]
},
{
"id": "b193cb290857ddc4",
"type": "canbus-opperational",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 400,
"y": 160,
"wires": []
},
{
"id": "35384ffb4ce24eae",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "10",
"payloadType": "num",
"x": 170,
"y": 160,
"wires": [
[
"b193cb290857ddc4"
]
]
},
{
"id": "d9f1b5aa4e5e1add",
"type": "canbus-stopped",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 380,
"y": 280,
"wires": []
},
{
"id": "8e539c1d7089b6a0",
"type": "canbus-reset",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 370,
"y": 340,
"wires": []
},
{
"id": "b8917ce1338684c3",
"type": "canbus-reset-commmunications",
"z": "f6f2187d.f17ca8",
"name": "",
"interface": "can0",
"x": 430,
"y": 400,
"wires": []
},
{
"id": "0a3a052a9978e769",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "10",
"payloadType": "num",
"x": 170,
"y": 280,
"wires": [
[
"d9f1b5aa4e5e1add"
]
]
},
{
"id": "3a33c7577deda244",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "10",
"payloadType": "num",
"x": 170,
"y": 340,
"wires": [
[
"8e539c1d7089b6a0"
]
]
},
{
"id": "dc3bf31a92bda73a",
"type": "inject",
"z": "f6f2187d.f17ca8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "10",
"payloadType": "num",
"x": 170,
"y": 400,
"wires": [
[
"b8917ce1338684c3"
]
]
}
]