iDect FC6A series, User Manual

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5: F
UNCTIONS AND
S
ETTINGS
5-40 FC6A S
ERIES
M
ICRO
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MART
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ANUAL
FC9Y-B1722
Analog Volume
This section describes the analog volume that changes the analog value used in the user program without the use of an external
device.
Function Description
The analog volume has a minimum value of 0 and a maximum value of 1,000. An analog value of 0 to 1,000 is acquired according
to the position of the analog volume and without the use of any special external devices, and that value is stored in a special data
register.
Analog volume value storage location
The analog volume value is stored in a special data register (D8057: read-only) as a value between 0 and 1,000. This value is
updated with each scan.
Analog volume status (D8059)
The analog volume status code is stored in special data register D8059 (analog volume status).
Analog Volume Filter
The analog volume data is averaged by the specified filter count. This can reduce rapid fluctuations in the analog volume.
The larger this value is set, the slower the tracking of the change in analog volume becomes.
When filtering, the input value is calculated with the equation below.
Analog volume data types
The range of analog volume values that can be handled with the specified data types are as follows.
Status code Details Analog Volume Value
0 Normal operation Current analog volume value
1
Converting data (occurs only once during the initial conversion when the power is
turned on)
Undefined
2 Initializing 0
3 to 65,535 Reserved —
Count Details
0 No filtering
1 to 255 The input value is set as the average value of n samples of analog volume data. (n: Count)
Data type Details
Binary data 0 to 1,000
Optional range
Minimum to maximum
(The minimum and maximum in a range between 0 to 1,000 where minimum
≤ maximum)
Analog Volume
Analog volume value after filtering =
Total analog volume values for filter count (n) worth of scans
Filter count n