MCV_ActivateParamChg

Activate modified parameters from the work list

As a result of this activation, the modified parameters stored in the work list are accepted by the ISG-MCP and take effect in the controller. On the occasion of this activation, the parameter values are simultaneously checked for plausibility.

CAUTION
During activation of a parameter set, the axis must be at standstill and motion commands must not have been or must not be started for the axis. The axis may only be moved again after completed activation of all parameters ("Valid = TRUE).

CAUTION
The controller's behaviour may change on activation of a parameter with the work list. This may modify or deactivate functions critical to safety.

Block diagram

Parameters of the FB

VAR_IN_OUT
	Axis	AXIS_REF	Axis reference.
VAR_INPUT
	Execute	BOOL	Activation of the parameter at rising edge.
	NCListTypeIn	STRING	Identification of parameter or list type, e.g. ACHS_MDS.
	NCParamSetIDIn	UINT	Number of parameter set to be activated.
VAR_OUTPUT
	Valid	BOOL	Indicates if the activation has been successful.
	Busy	BOOL	Indicates if the function block is still busy.
	NCListTypeOut	STRING	Identification of parameter or list type, e.g. ACHS_MDS.
	NCParamSetIDOut	UINT	Number of parameter set in which the parameter value should have been activated or is activated.
	NCParamConsistent	BOOL	Indicates if all parameters has been successfully activated while changing the parameter set.
	NCWarning	BOOL	Indicates if a warning in the ISG-MCP has occurred.
	NCError	BOOL	Indicates if an error in the ISG-MCP has occurred.
	NCErrorCode	UDINT	Error identification of the error in the ISG-MCP.
	Error	BOOL	Indicates if an error has occurred. Activation of parameter set is not executed.
	ErrorID	WORD	Error identification.

Behavior of the FB

The FB is in an error state if "Error” = TRUE. The parameter set has not been updated correctly. An error has occurred either in the function block itself or in the ISG-MCP. The “NCError” output parameter indicates whether an error has occurred in the ISG-MCP.
If “NCError” = TRUE and “NCParamConsistent” = TRUE, the new parameter set has not been correctly interpreted. No new parameters have been read in from the work list and the old parameters remain unchanged in the controller.

CAUTION
If the function block assumes the error state when the parameter set is updated with the work list, i.e. "Error” = TRUE and at the same time·”NCError” = TRUE and·“NCParamConsistent” = FALSE,then the controller has inconsistent data. Either a new parameter set must be correctly read in or the controller must be restarted.

If the FB returns a warning (“NCWarning” = TRUE), it was not possible to accept at least one parameter and this parameter's value has been internally corrected by the controller.
Successful activation of the work list is the prerequisite for it to be written back as the original list with the MCV_SaveParamChg function block.
If the parameters of the work list could not be activated successfully, the work list can be deleted with the MCV_DiscardParamChg function block, thus discarding all parameter changes made.