modbus_close(3)

close a Modbus connection

Section 3 libmodbus-dev bookworm source

Description

MODBUS_CLOSE

NAME

modbus_close - close a Modbus connection

SYNOPSIS

void modbus_close(modbus_t *ctx);

DESCRIPTION

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

RETURN VALUE

There is no return value.

EXAMPLE

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);