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Injecting many payloads at once (node-red)
Node-red - writing conditional functionConcurrent access to msg/payload on split flows in node-red?Get value from msg.payload return from a mysql query Node-REDNode-Red: Parsing JSON data and converting it into binary.update a file in node-red through context-storageNode Red Wemo Lookup JSON parsing error msg.payload : undefinedGetting individual data from node-red Object?Error “TypeError: Cannot read property 'ODP' of undefined” on node-rednode-red Schedex nodeNode-Red Function Wait for 2 Inputs
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I have a problem. I'm new to node red, I want to inject many payloads with different topics at once. I wanted to do it with function like in first node. It's function looks like so:
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String"
msg.payload=global.get("nazwa")
return msg
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String"
msg.payload=global.get("nazwa2")
return msg
...
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String"
msg.payload=global.get("nazwa9")
return msg
However it doesn't work. The 2nd node is working but in total I would have like 150+ blocks connected to OPC UA Client block. So my question is: does anyone know if there's a way to inject multiple payloads with different topics, favorabily with function, instead of doing it one by one with inject blocks?
node.js node-red
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
add a comment |
I have a problem. I'm new to node red, I want to inject many payloads with different topics at once. I wanted to do it with function like in first node. It's function looks like so:
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String"
msg.payload=global.get("nazwa")
return msg
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String"
msg.payload=global.get("nazwa2")
return msg
...
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String"
msg.payload=global.get("nazwa9")
return msg
However it doesn't work. The 2nd node is working but in total I would have like 150+ blocks connected to OPC UA Client block. So my question is: does anyone know if there's a way to inject multiple payloads with different topics, favorabily with function, instead of doing it one by one with inject blocks?
node.js node-red
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
add a comment |
I have a problem. I'm new to node red, I want to inject many payloads with different topics at once. I wanted to do it with function like in first node. It's function looks like so:
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String"
msg.payload=global.get("nazwa")
return msg
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String"
msg.payload=global.get("nazwa2")
return msg
...
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String"
msg.payload=global.get("nazwa9")
return msg
However it doesn't work. The 2nd node is working but in total I would have like 150+ blocks connected to OPC UA Client block. So my question is: does anyone know if there's a way to inject multiple payloads with different topics, favorabily with function, instead of doing it one by one with inject blocks?
node.js node-red
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
I have a problem. I'm new to node red, I want to inject many payloads with different topics at once. I wanted to do it with function like in first node. It's function looks like so:
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String"
msg.payload=global.get("nazwa")
return msg
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String"
msg.payload=global.get("nazwa2")
return msg
...
msg.topic="ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String"
msg.payload=global.get("nazwa9")
return msg
However it doesn't work. The 2nd node is working but in total I would have like 150+ blocks connected to OPC UA Client block. So my question is: does anyone know if there's a way to inject multiple payloads with different topics, favorabily with function, instead of doing it one by one with inject blocks?
node.js node-red
node.js node-red
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
asked Mar 25 at 21:26
adammoadammo
237 bronze badges
237 bronze badges
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The documentation explains how to send multiple messages from a status node.
With the code you have currently, as soon as it reaches the first return statement, the Function node stops processing any further so only one message is sent.
To send multiple messages from a Function node you have two options.
- return an array of message objects to send.
- call
node.send(msg);for each message you want to send.
For example:
return [
[
topic: "ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String", payload: global.get("nazwa"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String", payload: global.get("nazwa2"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String", payload: global.get("nazwa9")
]
]
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The documentation explains how to send multiple messages from a status node.
With the code you have currently, as soon as it reaches the first return statement, the Function node stops processing any further so only one message is sent.
To send multiple messages from a Function node you have two options.
- return an array of message objects to send.
- call
node.send(msg);for each message you want to send.
For example:
return [
[
topic: "ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String", payload: global.get("nazwa"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String", payload: global.get("nazwa2"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String", payload: global.get("nazwa9")
]
]
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
add a comment |
The documentation explains how to send multiple messages from a status node.
With the code you have currently, as soon as it reaches the first return statement, the Function node stops processing any further so only one message is sent.
To send multiple messages from a Function node you have two options.
- return an array of message objects to send.
- call
node.send(msg);for each message you want to send.
For example:
return [
[
topic: "ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String", payload: global.get("nazwa"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String", payload: global.get("nazwa2"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String", payload: global.get("nazwa9")
]
]
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
add a comment |
The documentation explains how to send multiple messages from a status node.
With the code you have currently, as soon as it reaches the first return statement, the Function node stops processing any further so only one message is sent.
To send multiple messages from a Function node you have two options.
- return an array of message objects to send.
- call
node.send(msg);for each message you want to send.
For example:
return [
[
topic: "ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String", payload: global.get("nazwa"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String", payload: global.get("nazwa2"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String", payload: global.get("nazwa9")
]
]
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
The documentation explains how to send multiple messages from a status node.
With the code you have currently, as soon as it reaches the first return statement, the Function node stops processing any further so only one message is sent.
To send multiple messages from a Function node you have two options.
- return an array of message objects to send.
- call
node.send(msg);for each message you want to send.
For example:
return [
[
topic: "ns=2;s=Target01.Nazwa.Nazwa[0];datatype=String", payload: global.get("nazwa"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[1];datatype=String", payload: global.get("nazwa2"),
topic: "ns=2;s=Target01.Nazwa.Nazwa[9];datatype=String", payload: global.get("nazwa9")
]
]
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
answered Mar 25 at 21:37
knollearyknolleary
7,2781 gold badge16 silver badges28 bronze badges
7,2781 gold badge16 silver badges28 bronze badges
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
add a comment |
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
Thanks, worked like a charm
– adammo
Mar 25 at 22:08
add a comment |
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