KEYENCE Visual KV Series - Manual (Page 344)

8.4 Programming KV-300 Series Only
KV
-300
KV-10/80
Chapter 8 KV-AN6 Analog I/O Module
1-320
8
8.4 Programming
8.4.1 Input Characteristics (A/D)
On the KV-AN6, the analog input function converts analog signals from an external
unit to digital signals. The converted data is written into the assigned data memory
addresses at every scan time.
An external analog input signal can be set according to the input range, as shown in
the following table.
The selection switches in the above table are located on the right side of the KV-
AN6 (
➮ Refer to page 1-319).
Voltage input
Current input
Through the A/D converter, analog input signals are written as binary data (16 bits)
into the assigned data memory addresses by channel (
➮ Refer to page 1-324). The
effective bits are the 12 bits starting from the most significant digit.
When a signal beyond the setting range is input, it is converted to 7FFFH at positive
voltage and 8000H at negative voltage. For example, if +10 V is input when input
range is set to ±5 V, it is digitally converted to 7FFFH.
2 0 4 6 8 10
-6400
-12800
-19200
-25600
(8300H) -32000
(7D00H) +32000
+25600
+19200
+12800
+6400
(mA) 12 14 16 18 20
(Digital-converted value)
(0 to 20 mA range)
(Analog input value)
(Digital-converted value)
+2 0 +4 +6 +8 +10 -2 -4 -6 -8
-6400
-12800
-19200
-25600
-32000 (8300H)
(7D00H) +32000
+25600
+19200
+12800
+6400
-5 +5
(V) -10
(±5 V range)
(±10 V range)
(Analog input value)
Selection Description Range
switch
Voltage input -5 to +5 V
-10 to +10 V
Current input 0 to 20 mA
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