ModBus Master control script commands

ModBus tutorial

ModBus script commands are stored as table entries in NVEM page 0. In the following pages, each command consists of a 1-byte numeric command code followed by 0 to several parameters. 16 bit parameters have '16' as part of their name. Other parameters are 8-bit.

Command codes less than 128 map to the same-numbered ModBus function. Codes 128 and over provide internal functions.