5
Features and Functions Section 1-1
Mean Value Function The mean value function can be used to remove erroneous values that occur
due to factors such as noise that is included in analog inputs. The operating
mean is taken without affecting the data refresh cycle. For details, refer to 2-6-
3 or 6-6-2 Mean Value Processing.
Ratio Conversion
Function
The CS1W-MAD44 and CJ1W-MAD42 Analog I/O Unit can output in analog
format the results of analog inputs calculated for ratio and bias. For details,
refer to 6-8 Ratio Conversion Function.
Offset and Gain
Adjustment Function
The A/D and D/A converter offset deviation and gain deviation can be
adjusted for each input and output. The offset and gain adjustments are made
with the Unit set for the adjustment mode, and the adjustment values are
stored in the Unit’s built-in EEPROM. For details, refer to 2-7, 4-7 or 6-9
Adjusting Offset and Gain.
Scaling Function With CS1W-AD161 Analog Input Units, CJ1W-DA08V/08C Analog Output
Units (See note 1.), and CJ1W-MAD42 Analog I/O Units, input analog values
and output analog set values can be automatically converted into user-speci-
fied units. This scaling function eliminates the previous need to provide pro-
grams (e.g., scaling using the SCL instruction) for numeric conversion to
different units.
When upper and lower limits have been preset in 16-bit binary data in the
CPU Unit’s DM Area, within a decimal range of
−32,000 to +32,000, input
analog values and output analog set values can be automatically converted
Analog Input Unit CPU Unit
Mean value
of "n" his-
tory buffers
Ratio and bias setting device
Ratio and biasA x + B
Analog Input Function
(Input signal range: 0 to 10 V)
Analog Output Function
(Output signal range: 0 to 10 V)
Analo
in
ut
10 V
Offset ad
ustment Offset ad
ustment
10 V
Adjustable range Adjustable range
0FA0/(1F40)
Gain
adjustment
Analog
output
Gain
adjustment
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