6F3B0253
7. Instructions
FUN 056
MAVE
Moving average
Expression
Input − [ A MAVE (n) B → C ]− Output
Function
When the input is ON, this instruction calculates the average value of the latest n scan’s register A data, and stores it in C. The allowable range of n is 1 to 64.
This instruction is useful for filtering the analog input signal.
The latest n scan’s data of A are stored in n registers starting with B, and C+1 are used as pointer.
Execution condition
Input |
| Operation | Output |
OFF | No execution |
| OFF |
ON | Execution |
| ON |
Operand
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| Constant | Index | ||
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| X | Y | R | S | T. | C. | XW | YW | RW | SW | T | C | D | I | J | K |
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A | Input data |
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| √ | √ | √ |
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| √ | √ | √ | √ | √ | √ | √ |
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n | Data size |
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| 1 - 64 |
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B | Start of table |
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C | Output data |
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| √ | √ | √ | √ | √ | √ |
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Example
The latest 5 scan’s data of XW04 is stored in D0900 to D0904 (5 registers), and the average value of them is calculated and stored in D0010.
D0011 is used as internal work data.
| XW04 | D0010 |
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1st scan | 1000 | 200 | = (1000) / 5 |
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2nd scan | 1005 | 401 | = (1000 + 1005) / 5 |
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3rd scan | 1009 | 603 | = (1000 + 1005 + 1009) / 5 |
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4th scan | 1012 | 805 | = (1000 + 1005 + 1009 | + 1012) / 5 | ||
5th scan | 1007 | 1006 | = (1000 | + 1005 + 1009 | + 1012 | + 1007) / 5 |
6th scan | 1004 | 1007 | = (1005 | + 1009 + 1012 | + 1007 | + 1004) / 5 |
7th scan | 998 | 1006 | = (1009 | + 1012 + 1007 | + 1004 | + 998) / 5 |
8th scan | 994 | 1003 | = (1012 | + 1007 + 1004 | + 998 + 994) / 5 | |
Basic Hardware and Function 159
