MODBUS_WRITE_BITS(3) Libmodbus Manual MODBUS_WRITE_BITS(3)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
array must contains bytes set to TRUE or FALSE.
The function uses the Modbus function code 0x0F (force multiple coils).
RETURN VALUE
The modbus_write_bits() 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 ALSOmodbus_read_bits(3)modbus_write_bit(3)AUTHORS
The libmodbus documentation was written by Stéphane Raimbault
<stephane.raimbault@gmail.com[1]>
NOTES
1. stephane.raimbault@gmail.com
mailto:stephane.raimbault@gmail.com
libmodbus 3.1.0 10/06/2013 MODBUS_WRITE_BITS(3)