modbus_read_input_bits(3) ========================= NAME ---- modbus_read_input_bits - read many input bits SYNOPSIS -------- *int modbus_read_input_bits(modbus_t *'ctx', int 'addr', int 'nb', uint8_t *'dest');* DESCRIPTION ----------- The *modbus_read_input_bits()* function shall read the content of the _nb_ input bits to the address _addr_ of the remote device. The result of reading is stored in _dest_ array as unsigned bytes (8 bits) set to _TRUE_ or _FALSE_. You must take care to allocate enough memory to store the results in _dest_ (at least _nb_ * sizeof(uint8_t)). The function uses the Modbus function code 0x02 (read input status). RETURN VALUE ------------ The function shall return the number of read input status if successful. Otherwise it shall return -1 and set errno. ERRORS ------ *EMBMDATA*:: Too many discrete inputs requested SEE ALSO -------- linkmb:modbus_read_input_registers[3] AUTHORS ------- The libmodbus documentation was written by Stéphane Raimbault