@wago-gmbh/cc100-canbus
v1.0.2
Published
Node RED module for basic functions with the CAN intferface of the cc100
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Readme
cc100-canbus
This repository contains a Node-RED module with nodes to initialize the CAN interface on a CC100 and send CANOpen NMT protocols.
Compatibility
This Node-RED package works with alpine based docker containers using the apk package manager. It has been tested the following docker images:
Usage
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-redTo install the module in Node-RED use the palette or npm i @wago-gmbh/cc100-canbus.
Nodes
All nodes use the interface can0 as default. To use a different interface change the name of the interface in the node properties.
canbus-initalize
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
canbus-opperational
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.
canbus-stopped
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.
canbus-pre-opperational
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.
canbus-reset
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.
canbus-reset-communication
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.
CAN communictaion
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.
Node-RED flow
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"
]
]
}
]