F&F LE-03MQ Modbus energy counter

[admin]

Erwin, full documenation is not finished, but here are the most important functions:

Code:

mb:setslave(slaveid)  Sets slave id to read/write data from/to mb:readcoils(start, count) [01] mb:readdiscreteinputs(start, count) [02] mb:readregisters(start, count) [03] mb:readinputregisters(start, count) [04]  Reads one or many registers/coils from the start address  Returns all values on success and nil, error description on error mb:writebits(start, v1, [v2, [v3, ...]]) [05] mb:writemultiplebits(start, v1, [v2, [v3, ...]]) [15] mb:writeregisters(start, v1, [v2, [v3, ...]]) [06] mb:writemultipleregisters(start, v1, [v2, [v3, ...]]) [16]  Writes values to registers/coils from the start address  Single write will be used when only one value is supplied, multiple write otherwise  Returns all of values written on success and nil, error description on error  Use writeregisters/writemultipleregisters to force writing using multiple  coil/register write function even when writing to a single coil or register mb:readregistervalue(address, datatype, [swap]) [03] mb:readinputregistervalue(address, datatype, [swap]) [04]  Reads encoded register(s) value based on the specified datatype:    "int16" - signed 2-byte (1 register) integer    "uint16" - usigned 2-byte (1 register) integer    "float16" - 2-byte floating point (KNX format, used in some HVAC units)    "int32" - signed 4-byte (2 registers) integer    "uint32" - unsigned 4-byte (2 registers) integer    "float32" - 4-byte (2 registers) floating point (IEEE 754)    "int64" - signed 8-byte (4 registers) integer    "uint64" - unsigned 8-byte (4 registers) integer    "float64" - 8-byte (4 registers) floating point (IEEE 754)  Optionally, it`s possible to swap register/byte order  Default value is word (2-byte) swap  Possible string values: n (no swap), w (word swap), b (byte swap), bw (byte and word swap)   Returns value on success and nil, error description on error mb:writeregistervalue(address, value, datatype, [swap]) [06/16]  Writes encoded value to register(s) based on the specified datatype:    "int16" - signed 2-byte (1 register) integer    "uint16" - usigned 2-byte (1 register) integer    "int16m" - signed 2-byte (1 register) integer, force multiple write    "uint16m" - usigned 2-byte (1 register) integer, force multiple write    "float16" - 2-byte floating point (KNX format, used in some HVAC units)    "int32" - signed 4-byte (2 registers) integer    "uint32" - unsigned 4-byte (2 registers) integer    "float32" - 4-byte (2 registers) floating point (IEEE 754)    "int64" - signed 8-byte (4 registers) integer    "uint64" - unsigned 8-byte (4 registers) integer    "float64" - 8-byte (4 registers) floating point (IEEE 754)  Optionally, it`s possible to swap register/byte order  Default value is word (2-byte) swap  Possible string values: n (no swap), w (word swap), b (byte swap), bw (byte and word swap)   Returns number of values written on success and nil, error description on error mb:reportslaveid()  Reads slave internal data  Returns values on success and nil, error description on error