4: A
NALOG
I/O C
ONTROL
4-17
Example: Analog I/O
The following example demonstrates a program of analog I/O control using an NTC thermistor. Two analog I/O modules
are mounted in the slots shown below.
System Setup
Operation
In this example, the input value from the NTC thermistor is calibrated. When the temperature reaches the preset value, the
output is turned off. The thermistor temperature is monitored on an analog meter.
Slot No.:
1
2
3
Slim Type
CPU Module
FC4A-D40S3
Analog Input Module
(Thermistor)
FC4A-J8AT1
Output Module
(Tr. Source)
FC4A-T08S1
Thermistor
External
Device
Analog Meter
Calibrated voltage
Analog Output Module
FC4A-K1A1
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