Requests the board to switch to the backup signaling state. This request can only be issued to a board in the primary or starting state.
DWORD hmiBackup ( CTAHD ctahd)
|
Argument |
Description |
|
ctahd |
Natural Access handle from a previous successful call to ctaOpenServices. |
|
Return value |
Description |
|
SUCCESS |
|
|
HMI_ERR_BADCMD |
Request failed. An event handle was passed to the Health Management service command. |
|
HMI_ERR_CLOSED |
Request failed. Connection closed by HMI. |
|
HMI_ERR_INTERROR |
Request failed. Unknown I/O error occurred. |
|
HMI_ERR_INVHANDLE |
Handle is not valid. |
|
HMI_ERR_NOMEM |
No memory available. |
|
HMI_ERR_REFUSED |
Request failed because the board is in a halted or standalone state. |
|
HMI_ERR_TIMEOUT |
Request failed. No response from HMI. |