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Man Pages
MODBUS_WRITE_BIT(3) libmodbus Manual MODBUS_WRITE_BIT(3)

modbus_write_bit - write a single bit

int modbus_write_bit(modbus_t *ctx, int addr, int status);

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).

The function shall return 1 if successful. Otherwise it shall return -1 and set errno.

modbus_read_bits(3) modbus_write_bits(3)

The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>
04/09/2022 libmodbus v3.1.6

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