Allen-Bradley LOGIX 5000 Reference Manual page 287

Drives
value so that all counts or "pulses" are ultimately accounted for and no data is lost
in the system. The output of the block, Out always yields a whole number in a
floating point data type.
Function Block
Assuming Initial_Position = 0 and Multiplier = 2500 => (25,000/100,000)
Scan Position_Feedback
n 0
n + 1 1
n + 2 2
n + 3 3
n + 4 4
n + 5 5
Structured Text
MUL_02.In := Position_feedback;
PMUL_02.Initalize := Initialize_Position;
PMUL_02.WordSize := 12;
PMUL_02.Multiplier := 25000;
PMUL(PMUL_02);
UPDN_02.Initialize := Initialize_Position;
UPDN_02.InPlus := PMUL_02.Out;
UPDN(UPDN_02);
Total_Position := UPDN_02.Out;
Example 2
In this electronic line shaft application, motor A's feedback acts as a master
reference which motor B needs to follow. Motor A's feedback is aliased to
"Position_feedback." Motor B's feedback is aliased to "Follower_Position." Due to
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
PMUL_02.Out Total_Position
0 0
0 0
0 0
0 0
1 1
0 1
Chapter 2
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