modbus_close - Man Page

void modbus_close(modbus_t *ctx);

The modbus_close() function shall close the connection established with the backend set in the context.

There is no return value.

modbus_t *ctx;

ctx = modbus_new_tcp("127.0.0.1", 502);
if (modbus_connect(ctx) == -1) {
    fprintf(stderr, "Connection failed: %s\n", modbus_strerror(errno));
    modbus_free(ctx);
    return -1;
}

modbus_close(ctx);
modbus_free(ctx);

modbus_connect(3)

The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>

libmodbus(7), modbus_connect(3).