matrikon opc server for allen-bradley User Manual
Matrikon OPC Server for Allen Bradley
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More log levels are available for both types of logging which record more detailed information.
Contact Matrikon Technical Support for further instructions on how to enable the higher log
levels.
Contact Matrikon Technical Support for further instructions on how to enable the higher log
levels.
The Matrikon OPC Delegator is a useful tool for logging OPC client/server communication. It
enhances the server Interface Activity Logging by loading up in the client application and
recording the client-side transactions. It can also be used with other OPC servers. Contact the
Matrikon Sales department for further information about this product.
enhances the server Interface Activity Logging by loading up in the client application and
recording the client-side transactions. It can also be used with other OPC servers. Contact the
Matrikon Sales department for further information about this product.
3.9.3 A
DVANCED
The Advanced tab contains some special timing parameters sometimes used to improve the
performance of certain OPC servers. It is not usually a good idea to alter these settings unless
asked to do so by support staff. They have very little effect on device communication.
performance of certain OPC servers. It is not usually a good idea to alter these settings unless
asked to do so by support staff. They have very little effect on device communication.
The first edit box specifies the minimum update rate that the server will allow for any OPC
group. This prevents client applications from requesting update rates that are impossible to
achieve or that cause heavy CPU loads. The default value is 100ms.
group. This prevents client applications from requesting update rates that are impossible to
achieve or that cause heavy CPU loads. The default value is 100ms.
The second and third edit boxes work in conjunction to break up the scanning of items in large
groups with slow update rates in order to reduce CPU load. For every “OPC Items per Group
Scan (maximum)” number of items scanned, the scanning thread will pause for “O PC Group
Scan Pause (maximum)” number of milliseconds. The default values are zero, indicating that no
pause occurs in the scan loop.
groups with slow update rates in order to reduce CPU load. For every “OPC Items per Group
Scan (maximum)” number of items scanned, the scanning thread will pause for “O PC Group
Scan Pause (maximum)” number of milliseconds. The default values are zero, indicating that no
pause occurs in the scan loop.
3.10 S
HUTTING
D
OWN
Click “shutdown” from the control panel, pop-up menu, or Shutdown Server from the File menu
to shut down the server if it runs as a local executable. A warning will appear if clients are
currently attached to the server. The shutdown command is not available for the server if it runs
as an NT service. Services can only be shut down from the Service Control Manager applet (in
the Windows NT Control Panel).
to shut down the server if it runs as a local executable. A warning will appear if clients are
currently attached to the server. The shutdown command is not available for the server if it runs
as an NT service. Services can only be shut down from the Service Control Manager applet (in
the Windows NT Control Panel).