VisualHMI audio playback: play_sound series and automatic continuous playback of MP3
Audio Playback API: Plays music fi…
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serial port screen/HMI development
The development materials for the configuration of VisualHMI serial port screens in Guangzhou Dacai cover practical content such as Modbus master-slave communication, LUA scripting, and configuration controls
VisualHMI File IO: LUA Read and Write SD Card/U-Disk/Flash and Directory Listing
Complete set of file read-write AP…
Read moreVisualHMI warning filtering: on_filter_warning multi-device warning distribution
Alarm Filtering Callbackon_filter_…
Read moreVisualHMI Warning Selection: on_select_warning displays disposal suggestions
Alarm selection callbackon_select_…
Read moreVisualHMI alarm parameter (Lua): on_parse_warning concatenates p0~p3 dynamic text
Alarm parameter callbackon_get_war…
Read moreVisualHMI warning parameter: {#0:num1.num2} placeholder and on_get_warning_param
The alarm parameter allows the ala…
Read moreVisualHMI LUA alarm centralized management: batch triggering of warning_set and parsing by 8 slaves
Alarm centralized management:warni…
Read moreVisualHMI drawing: on_draw/redraw/drawing API and layered drawing
Complete LUA graphics API: lines, …
Read moreVisualHMI data recording control: record_* API numerical/string table operations
Data recording control + record_* …
Read moreVisualHMI Timer: Complete case study on start_timer/on_timer and countdown
VisualHMI supports32 software time…
Read moreVisualHMI Modbus one master and multiple slaves: start_read polling, cycle scheduling, and read/write slaves
Modbus One Master Multiple Slaves:…
Read moreVisualHMI Lua API Complete Guide: Quick Reference Table for Callback, Communication, and Register Read/Write Functions
This is the complete API manualfor…
Read moreVisualHMI register operation: detailed explanation of the full range of get/set APIs and caching mechanism
The register operation API is the …
Read moreVisualHMI system callback functions: a comprehensive explanation of on_init/on_run/on_press/on_update
System callbacks areevent interfac…
Read moreVisualHMI RW power-down storage area: Flash lifespan, sector landing sequence, and secure initialization
The RW area is thepower-down save …
Read moreVisualHMI on LUA: main.lua structure, data type declaration, error checking, and modularization
LUA is the scripting language for …
Read moreVisualHMI operation record: Audit user operations, page turning, and export/clear
Operation Record Control recordsus…
Read moreVisualHMI alarm record: trigger conditions, level filtering, buzzer and backlight linkage
The alarm system supportscustom tr…
Read moreVisualHMI data recording: 1000-channel table, timestamp positioning, and string concatenation
The data recording control combine…
Read moreVisualHMI Historical Curve: 16-channel Trend, Page Turning, Zooming, and Data/Continuous Sampling
Historical curve recording tracks …
Read moreVisualHMI data sampling: timed/triggered sampling, power-down storage and export (record function foundation)
Data sampling is the foundation of…
Read moreVisualHMI video playback: H264/MP4 format requirements, startup video, and controlled playback
M series serial port screens suppo…
Read moreVisualHMI Camera Controls: CVBS/DVP/UVC Camera Access, Controlled Playback, and Color Filtering
Camera controls allow the HMI to d…
Read moreVisualHMI embedded interface: content browsing across multiple screens, 10000x10000 logical canvas
The embedded screen is asuper-scre…
Read moreVisualHMI sliding interface: fixed/dynamic/arbitrary three sliding ranges and navigation points
The sliding screen is acontainer-t…
Read moreVisualHMI time control: RTC display/editing, 12/24-hour format and clock
The time control supports two form…
Read moreVisualHMI Art Word: Special Effects Digital Display, 0123456789-
Artistic text display with special…
Read moreVisualHMI dynamic drawing: continuous register drawing commands, LUA set_array, and enclosed filling
The dynamic drawing control allows…
Read moreVisualHMI QR Code Control: Dynamically Generated QR Code, Error Correction Level, and Content Register
The QR Code control dynamically ge…
Read moreVisualHMI Flow Block: Simulating pipeline fluid flow and dynamic speed control
The flow block is used tosimulate …
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