NI PXI-2565 Counter module

This parameter specifies that a presetting other than the default value “0” is required for maintained and interconnectable data types (see Table 6.1). ’vno’ is the index number of the data element (with the required default value) from a basic quantity of standard data elements.It is only possible to perform limited correction in data definition. When defining element instructions EL,1... EL,2... etc, only the last EL instruction to have been entered can be re– entered (completety replaced). Changes to element instructions previously entered are limited to element name and attributes. If an S16 character string has been defined as last data element (highest element number), it assumes the significance of the process– related name.Proper standard parameterization requires the following sequence of data elements: – Outputs – Inputs and parameters – Separating element – Internal parameters – Status word – S16 string

Correcting data elements 

The last data element defined using EL, elno, elna,... can be replaced completely; only element name and attributes (exceptions “Q” and “X=vno”) of all previously defined elements can be changed. This correction is only possible if no blocks of this type have been defined, i.e. only the ORPA exists.  The system subroutine SYSTEM.SUBR (see Chap. 2.3.7) can be used for changing the C and B code without deleting existing blocks. Element name and attributes of the SYST.WART function block can be modified by operator input.

Element instruction for separating internal parameters

 Internal elements cannot be configured. They must be defined according to inputs and outputs and separated by a delimiter.Consecutive number of the data element to be corrected (element number). The correction is selected by specifying :K. elna: New element name to be entered (see definition of data elements) C, B, N: Data element attributes; all attributes must be re–specified, except A and X=vno which cannot be corrected (for meaning see definition of data elements)

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