VisualHMI Simple Database: easydb_* and Custom Mode for Data Record Controls
The simple database (exclusive for…
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LUA script
Organization of LUA script-related VisualHMI development documentation
VisualHMI Free UART Protocol (Active): UART_recv/calc_crc16 mapped to XGUS
The Free UART Protocol (Active) is…
Read moreVisualHMI Free UART Protocol (Passive): on_uart_recv Custom Frame Parsing
Custom Protocol (Passive): VisualH…
Read moreVisualHMI text color control: on_wgt_text_color batch theme switching
Text color control (exclusive for …
Read moreVisualHMI OTA upgrade: ota_init/ota_write and automatic upgrade via SD card
OTA Upgrade API: The upgrade logic…
Read moreVisualHMI video playback: play_video/on_video_notify and format requirements
The HMI series supports MP4 video …
Read moreVisualHMI audio playback: play_sound series and automatic continuous playback of MP3
Audio Playback API: Plays music fi…
Read moreVisualHMI 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 LUA Modbus implementation with one master and multiple slaves: practical examples and pitfalls of start_read/select_slave
Previously, we discussed configuri…
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