FB_MTP_DIntServParam

The function block FB_MTP_DIntServParam is an object for integer parameter value specifications from different sources: internal PLC logic and manual operation (e.g. via OPC UA). The values are managed via the state machine Service Mode.

The output value VOut corresponds to the current value specification limited to limit values and can be used within a service (see ParameterElements).

Applying values

Each parameter follows the same procedure when applying values. The values are applied in two steps:

Preparing the value
Applying of the value

The preparation of the value begins with the value specification via the variables VOp, VInt, VExt. Depending on the state of the Service Mode, a value is selected and limited via the value limit. The resulting requested value is displayed via the variable VReq.

To apply the value, the enabling is signaled on the PLC side via the variable ApplyEn = TRUE. The application can then be confirmed via variables ApplyOp, ApplyInt or ApplyExt, depending on the state of Service Mode. After successful application, the value of the variable VOut corresponds to the value of VReq.

Values can also be applied at service level using the same procedure. See the Parameters section at FB_MTP_ServiceControl.

Operation mode synchronization with higher-level service

The Service Mode of the parameter can be synchronized with the higher-level service via the variable Sync. The input variables for controlling the state machine are ignored and the state machine of the parameter automatically assumes the state of the Service Mode of the service.

Further characteristics

Inputs

Name	Type	Description	OPC UA access
TagName	STRING	Name of the interface	-
TagDescription	STRING	Description of the interface	-
WQC	BYTE	Worst Quality Code	Read
OSLevel	BYTE	Level must be defined for system. Value 0 is reserved for local operation.	Read/write
State* Src*		See Service Mode
ApplyEn	BOOL	Enable Apply parameter: 1: Parameters can be applied. 0: Parameters cannot be applied.	Read
Applylnt	BOOL	`Internal` switching request to apply requested parameters (relevant if `StateAutAct = TRUE` and `SrcIntAct = TRUE`): 1: Apply value. 0: Do not apply value	Read
sync	BOOL	Operation mode synchronization: 1: Synchronize with service. 0: Independent operation	Read/write
VInt	DINT	`Internal` value specification (relevant if `StateAutAct = TRUE` and `SrcIntAct = TRUE`)	Read
VUnit	INT	Unit of value	Read
VMin	DINT	Upper limit of the value specification	Read
VMax	DINT	Lower limit of the value specification	Read
VFbk	DINT	Feedback value	Read
VSclMin	DINT	Scale start for value display	Read
VSclMax	DINT	Scale end for value display	Read

Outputs

Name

Type

Description

OPC UA access

State*

Src*

See Service Mode

Vout

DINT

Current parameter value

Read

External variables

Name	Type	Description	OPC UA access
State* Src*		See Service Mode
ApplyOp	BOOL	`Operator` switching request to apply currently requested parameters (relevant if `StateOpAct = TRUE`): 1: Apply value. 0: Do not apply value	Read/write
ApplyExt	BOOL	`External` switching request to apply currently requested parameters (relevant if `SrcExtAct = TRUE` and `StateAutAct = TRUE`): 1: Apply value. 0: Do not apply value	Read/write
VOp	DINT	`Operator` value specification (relevant if `StateOpAct = TRUE`)	Read/write
VExt	DINT	`External` value specification (relevant if `SrcExtAct = TRUE` and `StateAutAct = TRUE`)	Read/write