L9P_AOUT: Analog Output
(Original Document)
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Naming
Name in LL984 Editor
Function Block Name
name of legacy 984 instruction
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Function Description
The L9P_AOUT DFB is an interface for calculated signals for output modules. It converts the signal to a value in the range 0...4096.
Formula
Formula of the L9P_AOUT DFB:
The meaning of the elements:
Element
Meaning
HEU
high engineering unit
ENABLE
input
LEU
low engineering unit
OUT
output
scale
scale
Representation
Parameters
Input Pin
Name
Data Type
Address Range
Meaning
Top
ENABLE
BOOL
–
ON = enables process control function
Node
Node Type
Name
Data Type
Address Range
Meaning
Middle
IN/OUT
PAR
ARRAY[1...9] OF UINT
%MW
see Parameter PAR below
Bottom
IN
LEN
UINT
9
length of parameter block (can not be changed)
Outpt Pin
Name
Data Type
Address Range
Meaning
Top
OUT
BOOL
–
ON = operation successful
Bottom
ERR
BOOL
–
ON = operation not successful
Parameter PAR
The data type of the parameter block is ARRAY[1...9] of UINT
Word
Content
Format
1, 2
input in engineering units
REAL (Floating Point)
3
output status
UINT
4
input status
UINT
5, 6
high engineering units
REAL (Floating Point)
7, 8
low engineering units
REAL (Floating Point)
9
output
UINT
Output Status
Control Expert-IEC bits
Function
0...4
standard output bits (flags)
5
1 = invalid H/L limits
6
not used
7
1 = clamped high
8
1 = clamped low
9...15
not used
Input Status
Control Expert-IEC bits
Function
0...11
not used
12...15
standard input bits (flags)