Multi-state Configuration Value object (MCnfVal)

The Multi-state Configuration Value (MCnfVal) defines the entities and structures by representing multi-state configuration values as virtual variables. MCnfVal object properties are:

✳ Indicates a Siemens proprietary property.

Present value

 

 

'Present value' indicates the present value of the virtual variable.

Property ID: 85

State flag ✳

 

 

"State flag" represents four boolean flags ("Out of service", "Overridden", "Fault", "In-Alarm") that indicate the general status of an object.

Reliability

 

 

'Reliability' indicates whether the property value 'Present value' is reliable. If the 'Present value' is not reliable, the property 'Reliability' indicates the cause of the fault and the bit "Fault" of the state indication is set to 'True'. In a normal case, the property 'Reliability' is set to "No fault".

Property ID: 103

State text

 

 

'State text' specifies the enumeration of the multistate value. Preconfigured enumerations can be selected or set to a project-specific enumeration.

Property ID: 110

Object access level ✳

 

 

"Object access level" defines the instance-specific object access level. "Object access level" is used for generic filtering and processing an object by a client application.

  • "Object access level" is a configuration property which can only be set up offline (ABT, application configuration).
  • "Object access level" is evaluated by client applications such as Technical Operator, DB-Import, and APOGEE Point Team mapping.

Access level

Name

Description

7

Basic operation

Access to BACnet objects and properties for a room user e.g. data points visible on a room unit.

6

Standard operation

Access to BACnet objects and properties for standard operation and monitoring (daily business), .e.g. room and plant information on a management station.

5

Extended operation

Access to BACnet objects and properties for extended operation and monitoring such as network and device objects. All I/Os are visible

4

Administrator

Not used by HQ solutions yet.

3

Basic service

Access to BACnet objects and properties used for commissioning, e.g. configuration value extensions, I/O extensions, etc.

2

Extended service

Not used by HQ solutions yet.

1

Internal

Access to all BACnet objects and properties for very specialized actions e.g. during development.

Object usage ✳

 

 

"Object usage" indicates whether the object is used or unused. The "Object usage" property can hide or display respective objects and their functionality in a client. For example, room functionality can be marked for flexible room arrangements as used/unused. An object that is marked as unused behaves as if the object does not exist.

Property ID: 4930

Description

 

 

"Description" is a string of printable characters whose content is not restricted.

Object name

 

 

"Object name" represents a name for the object that is unique internetwork-wide. The minimum length of the string is one character. The set of characters used in the "Object name" are restricted to printable characters.

Comment

 

 

A string of printable characters whose content is not restricted.