OPC Interface Service (OPCIS) Security
Security for the OPCIS is administered by the Access Control Service (ACS). As with other CygNet services, security is set on an application and event basis. The application name of the OPCIS is defined in the service configuration file using the keyword ACS_APPLICATION. The default is “OPCIS .” The security events are listed in the OPCIS Events table below.
The following tables provide details about OPCIS security settings. See also Security.
| Service Application Name | Main Security Event | Component-Level Security | Subject to Application Override |
|---|---|---|---|
|
OPCIS (name defined in service configuration file) |
CONTROL (name defined in service code) |
No |
Yes, OPCIS is a target service. |
OPCIS Events
| Event | Event Description | Authorization | Tasks |
|---|---|---|---|
|
CONTROL |
Modify a point’s current value |
0-None |
None |
|
1-Read |
None |
||
|
2-Update |
None |
||
|
3-Add |
None |
||
|
4-Delete |
None |
||
|
5-Admin |
Modify a point’s current value using a setpoint command Full permission for all service Events (except ODBC) regardless of the authorization for those Events or Application Override |
||
|
ODBC |
Access service records from an ODBC-compliant application |
0-None |
None |
|
1-Read |
View records in the service |
||
|
2-Update |
Edit existing records |
||
|
3-Add |
Add records |
||
|
4-Delete |
Delete records |
||
|
5-Admin |
Inclusive |
||
|
RTACCESS |
View point records |
0-None |
None |
|
1-Read |
View the list of points in the service |
||
|
2-Update |
Modify a point’s current value using a setpoint command |
||
|
3-Add |
Inclusive |
||
|
4-Delete |
Inclusive |
||
|
5-Admin |
Inclusive |
||
|
SVCINFO |
Miscellaneous GenServe security management Note: The SVCINFO event allows changes to log settings and use of the GlobalFunctions method SetGenserveInfo without requiring higher privileges on other actions. Other tasks are listed at right. |
5-Admin |
Permission level required to perform the following tasks:
|
