modbus_write_bit.md 598 B
modbus_write_bit
Name
modbus_write_bit - write a single bit
Synopsis
int modbus_write_bit(modbus_t *ctx, int addr, int status);
Description
The modbus_write_bit() function shall write the status of status at the
address addr of the remote device. The value must be set to TRUE or FALSE.
The function uses the Modbus function code 0x05 (force single coil).
Return value
The function shall return 1 if successful. Otherwise it shall return -1 and set errno.