leo.karpenko 发表于 2023-8-27 18:00:34

[Question]Dynamic curve from Modbus slave register data

Hello.
Need to draw historical / dynamic graph on DWIN display from data of it's Modbus slave register.
I can load data into DWIN display's Modbus reg. from master device. But can't understand how to draw history graph (1 hour history is needed with about 30-60 dots: every 1-2 mins)
Can someone please advise how make this? (didn't find corresponding demo)

P.S. Can't write dynamic graphs data via DWIN proprietary protocol because master device can communicate only over Modbus.

integer_32 发表于 2023-8-28 10:18:34

What model of DWIN display are you using?

leo.karpenko 发表于 2023-8-28 16:26:49

DMG80480C070_15WTR

integer_32 发表于 2023-8-28 16:48:09

This device currently does not have a demo of the historical curve. You can save the historical curve data on the lower computer, and the screen reads the historical curve data from the lower computer through the modbus protocol to display on the screen
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