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Analog Input Functions Section 7-9
7-9-5 Applicable Instructions
With END Refreshing Read the analog input PV (A550) using an instruction such as the MOV
instruction.
With Immediate
Refreshing
The data is acquired immediately with the PRV(881) instruction.
7-9-6 A/D Conversion Value
When a signal is input that exceeds the allowed ranges indicated below, the
conversion value will be processed as it is. However, inputting out-of-range
signals may result in hardware failure or system malfunction, so do not input
out-of-range signals.
Note If a voltage exceeding the input voltage limits is input, the conversion value
will be either the upper or lower limit value.
Signal Range: −10 to
10 V
Signal Range: 0 to 10 V
(@) PRV
P P: Output port (#0003: Analog input)
C C: Control specification (#0000: Present value read)
D D: Present value storage first word
E0C0
DDA0
0.0 V
+10.0 V
+11.0 V
0000
1F40
2260
Analog input (V)
−10.0 V
−11.0 V
Stored value
(4-digit Hexadecimal)
Resolution of 1/16,000
20D0
0000
FE70
+10.0 V
+10.5 V
1F40
Analog input (V)
−0.0 V
−0.5 V
Stored value
(4-digit Hexadecimal)
Resolution of 1/8,000