Analog Voltage Input - IDEC MICROSmart FC6A Series User Manual

5: F S
UNCTIONS AND ETTINGS

Analog Voltage Input

The section describes the analog input built into the FC6A Series MICROSmart.
Function Description
The FC6A Series MICROSmart is equipped with a built-in analog voltage input function. This function acquires 0 to 10V DC voltage
analog input by converting it to a digital value. The converted analog signal is stored in a special data register. Only one analog
input can be used.
External Device
(Voltage Input)
Analog input value storage location
The converted analog signal is stored in a special data register (D8058: read-only) as a digital value. This digital value is updated with
each scan. The range of the value that is stored in the special data register (D8058: read-only) can be specified with the data type.
Analog input status (D8060)
The analog input status code is stored in special data register D8060 (analog input status).
Status code
0
1
2
5
3, 4, 6 to 65,535
Analog Input Filter
The analog input data is averaged by the specified filter count. This can reduce rapid fluctuations in analog input.
The larger this value is set, the slower the tracking of the change in analog input becomes.
Count
1 to 255
When filtering, the input value is calculated with the equation below.
Analog input value after filtering =
Analog input data types
The range of analog values that can be handled with the specified data types are as follows.
Data type
Binary data
Optional range
5-44
Analog Input
+ (Red)
– (Black)
Normal operation
Converting data
(occurs only once during the initial conversion when the power is turned on)
Initializing
Wiring fault (out of maximum range)
When the analog input value exceeds 11 V
Reserved
The input value is set as the average value of n samples of analog input data. (n: Count)
Total analog input values for filter count (n) worth of scans
All-in-One CPU Module
0 to 1,000
Minimum to maximum
(The minimum and maximum in a range between 0 to
1,000 where minimum ≤ maximum)
FC6A S MICROS
ERIES
Details
Details
Filter count n
Details
0 to 4,000
Minimum to maximum
(The minimum and maximum in a range between -32,768
to 32,767 where minimum ≤ maximum)
U ' M FC9Y-B1722
MART SER S ANUAL
Analog Input Value
Current analog input value
Undefined
0
Upper limit value
—
Plus CPU Module