OPC EIE System UDCs
OPC EIE Group status points can be used to monitor statistics of the OPC server. Items that can be monitored include status of the OPC server, its start time, values received, number of active OPC groups, etc.
An OPC EIE Group status tag is just like any other tag in the PNT insomuch as it can be configured for alarms, notifications, and history. The properties that make an OPC EIE Group Status tag unique are its facility and its OPC-specific UDC. These UDCs are described below.
For general information about system UDCs, see System UDCs.
Group Status
The following UDCs provide system-level information. These points monitor statistics for the OPC EIE communication device.
Initial Value
When adding OPC EIE Group status points, one property to be aware of is the Initial Value property. This property determines if the tag has a value when the service starts.
Note: The recommendation is to use an Initial Value type of Restore or Specified Value. Restore will persist the value from the last shutdown, or if no value is available it will use the value in the Value box. Specified Value will always use the value in the Value box.
| UDC | UDC Name | Description | Point Type |
|---|---|---|---|
|
SYOPCGPCNT |
OPC Health Group Count |
The number of groups that the comm driver has active on the OPC server. |
Analog Input |
|
SYOPCHBAND |
OPC Server Bandwidth |
OPC server bandwidth (via health check). |
Analog Input |
|
SYOPCHBLD |
OPC Server Build Number |
OPC server build number (via health check). |
Analog Input |
|
SYOPCHCT |
OPC Healthcheck Time |
Time on OPC server when last health check was performed. |
String Input |
|
SYOPCHST |
OPC Server Start Time |
Time OPC server was started up (via health check). |
String Input |
|
SYOPCHSTAT |
OPC Server State |
OPC server state (via health check). Manually set to fail when connection is lost. |
Enum Input |
|
SYOPCHUPT |
OPC Health Last Upd Time |
Time on OPC server of last update time before healthcheck was performed |
tring Input |
|
SYOPCHVEND |
OPC Server Vendor Info |
OPC server vendor info (via health check). |
String Input |
|
SYOPCHVMAJ |
OPC Server Version Major |
OPC server major version (via health check). |
Analog Input |
|
SYOPCHVMIN |
OPC Server Version Minor |
OPC server minor version (via health check). |
Analog Input |
