L9E_PI: Load the Floating Point Value of "Pi"
(Original Document)
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Naming
Name in LL984 Editor
Function Block Name
name of legacy 984 instruction
name in other tools and editors like:
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Function Description
The L9E_PI DFB loads the floating point value of π to PIVAL.
Representation
Parameters
Input Pin
Name
Data Type
Address Range
Meaning
Top
ENABLE
BOOL
–
ON = loads floating point value of π to PIVAL
Node
Node Type
Name
Data Type
Address Range
Meaning
Top
IN
VALUE1
ARRAY[1..2]OF UINT
%MW
VALUE1 is not used but allocation is required.
Middle
IN/OUT
PIVAL
ARRAY[1...4] OF UINT
%MW
floating point value of π
The floating point value of π is posted in word 3 and 4.
Word 1 and 2 are not used but allocation is required.
Note: To preserve space, you can make the %MW reference numbers assigned to word 1 and 2 equal to VALUE1, since word 1 and 2 are not used.
Output Pin
Name
Data Type
Address Range
Meaning
Top
OUT
BOOL
–
ON = operation successful