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198
Math Instructions
SCP Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 82.
Parameter
Input (x)
•
•
•
Input Min. (x
)
•
•
0
Input Max. (x
)
•
•
1
Scaled Min. (y
)
•
•
0
Scaled Max. (y
)
•
•
1
Output (y)
•
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•
(1) PTO and PWM files are only for use with MicroLogix 1100 BBB unit.
(2) See Important note about indirect addressing.
Publication 1763-RM001C-EN-P - October 2009
Data Files
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You cannot use indirect addressing with: S, ST, MG, PD,
IMPORTANT
RTC, HSC, PTO, PWM, STI, EII, BHI, MMI, CS, IOS, and
DLS files.
Do not use the High Speed Counter Accumulator
IMPORTANT
(HSC.ACC) for the Scaled Output parameter in the SCP
instruction.
Special Considerations when Using Floating Point Parameters
If any of the parameters (except Output) are NAN (not a number),
Infinity, or De-normalized; then the result is -NAN.
If y
- y
or x
- x
1
0
1
Other Considerations
If y
- y
= 0, the Result becomes the Scaled Start value
1
0
If x
- x
= 0 and x = x
1
0
If x
- x
= 0 and x does not equal x
1
0
overflow (for integer values) or a negative NAN (for floating point values)
(1)
Function Files
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result in an overflow, then the result is -NAN
0
, the Result becomes the Scaled Start value
0
, The Result becomes a negative
0
Address
Address Level
(2)
Mode
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