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I am making a program to receive data from a 2D scanner that is sent through the data structure below.
I've done this same program in VBA but now that I migrate to the Node Red and I do not know how to get each data from the sensor data header on the Node Network.

Below is a photo of the sensor manual data header.

data header:

enter image description here

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So, basically your question is how to parse/unpack the binary data coming from the sensor to retrieve meaningful information. As it is normal in Node-RED there are two possible paths to follow: Do it by hand OR use some existing library to help you.

Doing it by hand would require things like: store the binary data into a buffer, using function nodes in Node-RED to slice the buffer into separate pieces (using the protocol structure as your map), eventually escaping characters (if required by the protocol), calculating check-sums, etc.. It is not possible to help you further given the scarce amount of information provided in your post. However you certainly will find a supportive community in Node-RED forum, so I encourage you to go there for help.

Another way is by taking advantage of existing libraries. This may slow you down as you need to research libraries, chose one and learn how to use it. I can try to help by providing some links for your reading:

1- Node-RED node has a node to handle binary data (node-red-contrib-binary). I never used it so I can not tell you if it will offer all the capabilities you need. In general using pre-existing nodes (from Node-RED library) is the faster and safer way to proceed.
https://flows.nodered.org/node/node-red-contrib-binary

2- Additional libraries that could eventually be considered:

https://github.com/bigeasy/packet

https://github.com/substack/node-binary

https://github.com/jDataView/jBinary

https://www.npmjs.com/package/binary-parser-encoder

https://www.npmjs.com/package/protobufjs

Edit: Let´s say you chose to use the npm module binary-parser-encoder. The core of your flow will be a single function node with this code (tested ok with random data):

var Packet = global.get('binary_parser');

var buf = msg.payload;



var typea = new Packet()

  .endianess("little")

  .uint16("magic")

  .uint16("packet_type")

  .uint32("packet_size")

  .uint16("header_size")

  .uint16("scan_number")

  .uint16("packet_number")

  .double("timestamp_raw")

  .double("timestamp_syncw")

  .uint32("status_flags")

  .uint32("scan_frequencye")

  .uint16("num_points_scan")

  .uint16("num_points_packet")

  .uint16("first_index")

  .uint32("first_angle")

  .uint32("angular_increment")

  .uint32("iq_input")

  .uint32("iq_overload")

  .double("iq_timestamp_raw")

  .double("iq_timestamp_sync")

  .uint8("header_padding");



msg.payload = typea.parse(buf);

return msg;