[opcsrv]

General settings for the OPC DA server.

[opcsrv] cnsShowSystemNameForLocalViews

Type
bool
Default
0
Range
0|1
Determines if the local system name is used in the OPC address space. This entry is only valid for server configuration using CNS View.

[opcsrv] cnsShowViewInPI

Type
bool
Default
1
Range
0|1
Determines if the CNS View name is used in the OPC address space. This entry is only valid for server configuration using CNS View. If this entry is set to 0 and the server uses more than one view of a system, item name conflicts might appear.

[opcsrv] CompareOldNew

Type
int
Default
0
Range
0|1
Activates an old/new comparison in the WinCC OA OPC server. Data from the periphery, that do not change, are not sent to WinCC OA.

[opcsrv] itemIdType

Type
int
Default
0
Range
0-2
With this entry one can define if data point names or alias shall be uses as OPC item identifiers. The following values are possible.
  • 0 -> use data point names
  • 1 -> use alias and ignore DPE if no alias is defined
  • 2 -> use alis and fall back to data point name if no alias exists

[opcsrv] pollCount

Type
unsigned integer
Default
32
Range
>0

Defines the number of data points that can be polled at once. If several polling requests are queued they will be processed in the next driver cycle.

[opcsrv] rootNode

Type
string
Default
WinCC_OA
Range
-

Allows to set the root node of the OPC server.

Please note, that this setting is is only applied to DPGroups and not for Plantmodel (CNS) configurations.

[opcsrv] server

Type
string
Default
OPCDAPvssServer
Specifies the server name for the internal datapoint (without leading "_").

[opcsrv] showDPTs

Type
bool
Default
0
Range
0|1
Allows to define if data point types are mapped to the address space (value 1) or not (value 0).