Lua Scripts

The communication format is determined by built-in Lua scripts on the mainboard. The corresponding script must be loaded and enabled on the development board before use.

Script List

Script	Data Format	Use Case
`checkConnectivity.lua`	Any string	Connectivity test; data goes to register 1 (test only)
`getString_reg.lua`	Simple format	Simple data exchange; register number identified by frame
`getString_json.lua`	Single JSON	Single register write, standardized format
`getString_multi_json.lua`	Multiple JSON	Recommended — write multiple registers in one frame, supports remote commands
`getOpMsg.lua`	Special character format	When data contains `{}` `"` `^` `%` etc.

Script Selection Guide

Requirement	Recommended Script
Connectivity test only	`checkConnectivity.lua`
Simple data transfer	`getString_reg.lua` or `getString_json.lua`
Multiple registers / remote control	`getString_multi_json.lua` (recommended)
Data with special characters	`getOpMsg.lua`

Data Flow

$$Host/Scale/PLC ──(Serial/Network)──> Lua script parses │ Writes to register │ Canvas object updates$$

Note: checkConnectivity.lua is for connectivity testing only — it does not support signal switching.