modbus_write_bits3
Write many bits
Usage
int modbus_write_bits(modbus_t *ctx, int addr, int nb, const uint8_t *src);
Overview
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 function shall return the number of written bits if successful. Otherwise it shall return -1 and set errno.
Errors
EMBMDATA
Writing too many bits
Releases
6 releases since Debian 7 (Wheezy); the text changed 5 times.