IDEC MICROSmart FC6A Series User Manual page 441

(5) Sampling Time
Analog values are converted to digital values at the interval of the sampling time. Depending on the analog I/O module, you may
be able to change the sampling time setting.
Type
FC6A-J2C1
FC6A-J4A1
FC6A-J8A1
FC6A-J4CN1
FC6A-J4CH1Y
FC6A-J8CU1
FC6A-L06A1
FC6A-L03CN1
*1 When the sampling time is set to 30 ms, the modules may be more easily affected by commercial power supply noise (50/60 Hz noise)
and fluctuations in input values may become larger. If there are large fluctuations in input values, change the sampling time to 120 ms.
(6) Thermistor settings
When NTC thermistor is selected for the FC6A-J8CU1 signal type, the following parameters must be set.
Parameter
R0
T0
B
*1 Information are described in the instruction sheet for the thermistor to use.
The characteristic of NTC thermistor is that the resistance decreases as the temperature rises. The analog modules measure the
resistance of the thermistor and calculate the temperature based on above three parameters.
The measurable range of the resistance of NTC thermistor is 100 Ω to 200,000 Ω. The range of temperature that can be calculated
is -90°C to 150°C. Select NTC thermistor that functions within those ranges.
Signal Type
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
Expansion 0 to 20 mA
Expansion 4 to 20 mA
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
Thermocouple
Resistance thermometer
Thermocouple
Thermocouple
NTC/PTC thermistor
PTC thermistor (threshold)
Resistance measurement
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
0 to 10 V
-10 to +10 V
0 to 20 mA
4 to 20 mA
Thermocouple
Resistance thermometer
Description
The thermistor resistance in "T0"°C (Ω)
*1
Temperature (°C)
*1
Thermistor B constant
FC6A S MICROS
ERIES
1 ms
1 ms
1 ms
1 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
100 ms/10 ms
100 ms/10 ms
100 ms/10 ms
100 ms/10 ms
104 ms
104 ms
*1
120 ms/30 ms
104 ms
104 ms
104 ms
104 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
1 ms/10 ms
100 ms/10 ms
100 ms/10 ms
100 ms/10 ms
100 ms/10 ms
104 ms
104 ms
*1
U ' M FC9Y-B1722
MART SER S ANUAL
9: A I/O M
NALOG
Sample Time
Range
0 to 65,535
-32,768 to 32,767
-32,768 to 32,767
ODULES
9-7