Function Description
The function block UA_ConnectionGetStatus is used to get the connection status of a specified connection. Its also provides the Server State and also the Service Level
Representation in FBD
Parameter Description
Name |
Type |
Comment |
|---|---|---|
EXECUTE |
BOOL |
On rising edge connection is terminated. |
CONNECTIONHDL |
DWORD |
Connection handle of connection to be closed. |
TIMEOUT |
TIME |
Maximum time to close the connection. |
Name |
Type |
Comment |
|---|---|---|
DONE |
BOOL |
FB has successfully completed its task. |
BUSY |
BOOL |
The FB is not finished and new output values are to be expected. |
ERROR |
BOOL |
Signals that an error has occurred within the FB. |
ERRORID |
DWORD |
|
CONNECTIONSTATUS |
UINT |
See UAConnectionStatus. The outputs ServerSate and ServerLevel are only valid if the ConnectionStatus is UAConnectionStatus_Connected |
SERVERSTATE |
UINT |
See UAServerState. The Server State is UAServerState_UNKOWN if the ConnectionStatus is not UAConnectionStatus_Connected |
SERVERLEVEL |
BYTE |
ServiceLevel describes the ability of the Server to provide its data to the client. The value range is from 0 to 255, where 0 indicates the worst and 255 indicates the best. The intent is to provide the clients an indication of availability among redundant Servers. This Value is server dependent. |
Runtime Error
Refer to the Appendix for a list of OPC UA detected error codes.