Mul - Multiply; Div - Divide; Neg - Negate; Clr - Clear - Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

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194 Math Instructions

MUL - Multiply

DIV - Divide

MUL MUL
Multiply
Source A N7:0
0<
Source B N7:1
0<
Dest N7:2
0<
DIV DIV
Divide
Source A N7:0
0<
Source B N7:1
0<
Dest N7:2
0<

NEG - Negate

NEG NEG
Negate
Source N7:0
0<
Dest N7:1
0<

CLR - Clear

CLR CLR
Clear
Dest N7:0
0<
Publication 1763-RM001C-EN-P - October 2009
Instruction Type: output
Execution Time for the MUL and DIV Instructions
Controller Instruction
MicroLogix 1100 MUL
DIV
Use the MUL instruction to multiply one value by another value (Source A
x Source B) and place the result in the Destination.
Use the DIV instruction to divide one value by another value (Source A/
Source B) and place the result in the Destination. If the Sources are single
words and the Destination is directly addressed to S:13 (math register),
then the quotient is stored in S:14 and the remainder is stored in S:13. If
long words are used, then the results are rounded.
Instruction Type: output
Execution Time for the NEG Instruction
Controller Data Size
MicroLogix 1100 word
long word
Use the NEG instruction to change the sign of the Source and place the
result in the Destination.
Instruction Type: output
Execution Time for the CLR Instruction
Controller Data Size
MicroLogix 1100 word
long word
Use the CLR instruction to set the Destination to a value of zero.
Data Size When Rung Is:
True
20.59 μs
word
20.68 μs
long word
14.68 μs
word
14.96 μs
long word
When Rung Is:
True False
8.78 μs 0.87 μs
9.62 μs 0.87 μs
When Rung Is:
True False
0.87 μs
5.29μs
5.46 μs 0.87 μs
False
0.87 μs
0.87 μs
0.87 μs
0.87 μs