Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
modbus_write_bits()					   modbus_write_bits()

Name
       modbus_write_bits - write many bits

Synopsis
       int modbus_write_bits(modbus_t *ctx, int	addr, int nb, const uint8_t *src);

Description
       The  modbus_write_bits()	function shall write the status	of the nb bits
       (coils) from src	at the address addr of the remote device. The src  ar-
       ray must	contains bytes set to TRUE or FALSE.

       The function uses the Modbus function code 0x0F (force multiple coils).

Return value
       The  function  shall  return  the number	of written bits	if successful.
       Otherwise it shall return -1 and	set errno.

Errors
       • EMBMDATA, writing too many bits.

See also
       • modbus_read_bits <modbus_read_bits.md>

       • modbus_write_bit <modbus_write_bit.md>

							   modbus_write_bits()

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=modbus_write_bits&sektion=3&manpath=FreeBSD+Ports+15.0>

home | help