REG_REAL, REG_DINT, REG_DWORD Functions

REG_REAL (file, element)

REG_DINT (file, element)

REG_DWORD (file, element)

Represents the register at the specified IEC address %MDfile.element.

Parameters

File(DINT)
The file portion of the address.

Element(DINT)
The element portion of the address.

Returns

Represents the register at the specified IEC address %MDfile.element. The function determines the returned data type:

REG_REAL: REAL

REG_DINT: DINT

REG_DWORD: DWORD

Remarks

This function is not intended for common use. All RMC registers can be addressed directly, making this function unnecessary in most applications. This function is intended for the rare cases in which it is necessary to calculate an address mathematically or address a register regardless of the data type or tag name.

The data type of the specified IEC address will be the external data type as specified in the RMC register map. This data type need not match the returned data type. The bits of the register will be preserved. That is, the data will not be converted.

Examples

MyReal := REG_REAL(num1 + 10,num2 + 8);

REG_REAL(10,8) := 20.0;

Accessing the axis' Scale parameter on an RMC75, given the axis number:

REG_REAL(12+MyAxis, 0) := 0.003;