Hi, I tried to query a U64 Modbus value for the first time. But no matter how I configure the buffer parser, there is always only one error. What am I missing? [grafik] [grafik] [grafik] [grafik]

[image] Becker: better Yes. [image] [{"id":"3d6370f2.5997e","type":"inject","z":"64ce1d00.d049e4","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":540,"y":580,"wires":[["e0e5a…

Can you show us what you get from this (its a small flow built from your modbus data... [image] [{"id":"744c02e3.3e785c","type":"inject","z":"f0c54878.b7be68","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"",…

TypeError: Cannot read property 'bind' of undefined :nauseated_face: :roll_eyes: whats wrong with my NR - I see, its working at your NR the OS is old, 9 (Stretch) :woozy_face:

hmmmm :thinking: Can you add a catch and link it to a debug node set to show complete message and paste the content of that msg in a reply please?

[image] [{"id":"87dc0eac.9baeb","type":"catch","z":"f0c54878.b7be68","name":"","scope":null,"uncaught":false,"x":1090,"y":360,"wires":[["62ec60f.62ed9a"]]},{"id":"62ec60f.62ed9a","type":"debug","z":"f0c54878.b7be68","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete…

In this thread Nick mentions that reading 64bit ints from buffer was added in Node 12 [image] ModBus TCP Read 64-bit registers Industrial what version of nodejs are you using? at a command line terminal, enter node -v

It might be a factor but MDN says otherwise

maybe this ? v12 and v10.20 [image] Buffer | Node.js v15.3.0 Documentation

Not sure what you mean @UnborN If you select the V10 dropdown on the nodejs docs & look at API for node buffer it does support the bigint functions

got it: {"topic":"bc57293c.b45d5","messageId":"5fcd1a9b7eae09b6296c0167","payload":[0,0,0,53199,0,0,0,46520],"queueLengthByUnitId":{"unitId":3,"queueLength":0},"queueUnitId":3,"unitId":3,"modbusRequest":{"value":{"T3":28.8},"unitid":"3","fc":4,"address":"31397","quantity":"8","messageId":"5fcd1a9b7…

Node-RED

Node-RED Forum

Bufferparser with U64 Modbus

General

UnborN 6 December 2020 18:35 16

In this thread Nick mentions that reading 64bit ints from buffer was added in Node 12

Topic		Replies	Views
[UPDATED] node-red-contrib-buffer-parser - V3.1.2 Share Your Nodes	63	8069	10 July 2024
Using push into a for loop Industrial	17	1096	2 April 2021
ModBus TCP Read 64-bit registers Industrial	35	3528	23 June 2020
General support for newbie General	17	276	7 February 2025
Node-red-contrib-modbus, problem with modbus serie General	24	639	6 December 2023

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Bufferparser with U64 Modbus

Related topics