TDS: RS485 7-Segment LED display

TDS module from the TQS product line is a four digit 7-segment LED display with two universal indicators. TDS communicates over RS485 line via a simple protocol. Display Features 7-segment LED dis...more information
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Order CodeTDSWarranty36 monthsCustoms Code85312020Weight104 gCountry of originCZMakerPapouch.com

TDS module from the TQS product line is a four digit 7-segment LED display with two universal indicators. TDS communicates over RS485 line via a simple protocol.

Display Features

  • 7-segment LED display for four digits
  • 2 indicators
  • RS485 communication
  • Spinel or MODBUS RTU communication protocol (user selectable)
  • The display can show the values measured by the Wix software
  • Hardware communication indication (LED)
  • Compact
  • Ingress Protection Rating: IP64
  • Low consumption, integrated voltage stabiliser (unstabilised power supply can be used)

Example: Time display using Modbus RTU and Node-RED

With the Node-RED automation system, you can easily display your own values on the display. The following figure and source code of the example are a basic example of how to display the current time in the format hh:mm.

Time display using Modbus RTU and Node-RED

Flow from this example writes the current time to the display using Modbus RTU (node-red-contrib-modbus). The value on the display is updated once a minute.

[{"id":"b7c936b3.915378","type":"modbus-write","z":"9c7afede.59e65","name":"","showStatusActivities":false,"showErrors":false,"unitid":"49","dataType":"MHoldingRegisters","adr":"100","quantity":"5","server":"6984e91f.37d4f","emptyMsgOnFail":false,"keepMsgProperties":false,"x":560,"y":460,"wires":[["2ac28b3.c6ef6f4"],[]]},{"id":"2ac28b3.c6ef6f4","type":"debug","z":"9c7afede.59e65","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":780,"y":460,"wires":[]},{"id":"63dbbf45.0151b","type":"function","z":"9c7afede.59e65","name":"Show TDS","func":"let dte = new Date();\nlet mm = dte.getMinutes().toString().padStart(2, '0');\nlet hh = dte.getHours().toString().padStart(2, ' ');\nlet str = hh + '.' + mm;\n\nlet arr = [];\n[...str].forEach(chr => arr.push(chr.charCodeAt(0)));\n\nmsg.payload = arr;\nreturn msg;","outputs":1,"noerr":0,"x":370,"y":460,"wires":[["b7c936b3.915378"]]},{"id":"fbf4342d.42faa8","type":"inject","z":"9c7afede.59e65","name":"","topic":"","payload":"","payloadType":"date","repeat":"60","crontab":"","once":true,"onceDelay":0.1,"x":210,"y":460,"wires":[["63dbbf45.0151b"]]},{"id":"6984e91f.37d4f","type":"modbus-client","z":"","name":"","clienttype":"serial","bufferCommands":false,"stateLogEnabled":false,"tcpHost":"127.0.0.1","tcpPort":"502","tcpType":"DEFAULT","serialPort":"/dev/ttyAMA0","serialType":"RTU-BUFFERD","serialBaudrate":"9600","serialDatabits":"8","serialStopbits":"1","serialParity":"none","serialConnectionDelay":"1000","unit_id":"","commandDelay":1,"clientTimeout":1000,"reconnectTimeout":3000}]
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tds-datasheet.pdfDatasheet

Complete documentation of TDS display module (with Spinel protocol documentation).

File size: 589 kB

Date: 30.05.2011

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tds-communication-protocol-modbus-rtu.pdfMODBUS RTU Protocol description

Communication Protocol MODBUS RTU used in TDS display.

File size: 0.5 MB

Date: 30.06.2022

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wix-free.zipsw-wix-free.zip

Wix - Free version of measurement software, version 1.8.9.3
Software for measurement, storing values, controlling and viewing measured-out values from Papouch s.r.o. devices (or others if integrated with for example MODBUS).
(Restrictions in the free version can be removed by purchasing a license.)
Go to Wix main page...

File size: 3.1 MB

Date: 08-31-2018

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spinel-comm-setup.zipspinel-comm-setup.zip

Simple utility to set-up address and communication speed of your devices with Spinel protocol. Version 2.0 with added features and functions

File size: 339 kB

Date: 06-22-2017

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tqs-scanner.ziptqs-scanner.zip

Searching utility. This will search your RS485 line and find all devices with Spinel protocol you have connected. It can also switch TQS3 to TQS1 mode and vice versa.

File size: 506 kB

Date: 03-11-2011

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