debian man page for modbus_read_input_bits

Query: modbus_read_input_bits

OS: debian

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

MODBUS_READ_INPUT_BI(3) 					 Libmodbus Manual					   MODBUS_READ_INPUT_BI(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 modbus_read_input_status() 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
modbus_read_input_registers(3)
AUTHORS
The libmodbus documentation was written by Stephane Raimbault <stephane.raimbault@gmail.com[1]>
NOTES
1. stephane.raimbault@gmail.com mailto:stephane.raimbault@gmail.com libmodbus 3.0.3 05/26/2012 MODBUS_READ_INPUT_BI(3)
Related Man Pages
modbus_read_registers(3) - debian
modbus_new_rtu(3) - debian
modbus_reply_exception(3) - debian
modbus_reply(3) - debian
modbus_write_and_read_registers(3) - debian
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