| cyg_modbus_get_uid | ||
|---|---|---|
 | 111.2. Backend API |  |
Name
cyg_modbus_get_uid — Read “Unit ID” of request
Synopsis
#include <cyg/modbus.h>
Cyg_ErrNo cyg_modbus_get_uid(cyg_handle_t ctx, cyg_uint8 *uid);
Description
This function provides access to the underlying
“Unit ID” value for the
passed ctx request handle parameter. The
passed uid parameter references the location
to be written with the relevant identifier value.
Return value
On success ENOERR is returned, and if
non-NULL then the
referenced uid location is updated with the
“Unit ID”. If the underlying transport does not
provide access to a suitable identifier value then
the ENOENT error code is returned.
| |  | |
| cyg_modbus_response_exception |  | cyg_modbus_acm_add |
| 2025-10-02 | eCosPro Non-Commercial Public License |