IM 04L20A01-01E
1-3
1
Explanation of Functions
1.2 Functions of the Input Section
Number of Measurement Channels/Scan Interval
The number of measurement channels and scan intervals for different models are listed
in the table below.
Model Number of Measurement Channels Scan Interval
FX103 3 channels 250 ms
FX106 6 channels 1 s or 2 s
FX112 12 channels 1 s or 2 s
Input Type and Computation
You can select the input type of a measurement channel from the table below. In
addition, difference computation, square-root computation, and scaling can be performed
on the measured data and display or save the computed result as measured data.
Input type Description
DC voltage Measures a DC voltage in the range of ±20 mV to ±50 V.
DC current The current signal is converted to a voltage signal by a shunt resistor
attached to the input terminal and measured. The measurable range is
the range equivalent to the “DC voltage” range indicated above after
converting the current to the voltage signal.
Thermocouple Measures temperatures corresponding to the temperature range of
each thermocouple type such as R, S, B, K, E, J, T, N, W, L, U, and
WRe3-25.
Resistance temperature Measures temperatures corresponding to the appropriate range for
detector Pt100, JPt100, or Pt1000.
*1
ON/OFF input Displays the contact input or voltage input signals by correlating them to
0% or 100% of the display range.
Contact input: Closed contact is ON (1).
Open contact is OFF (0).
Voltage input: Less than 2.4 V is OFF (0).
Greater than or equal to 2.4 V is ON (1)
Pulse input For the description, see page 1-7.
*1 Pt1000 is optional (/N3 option).
Note
For converting a current signal to a voltage signal, three shunt resistors are provided (see
“
Optional Accessories (Sold Separately)
” on
page v
. A 250 W shunt resistor, for example, is
used to convert a 4 to 20 mA to a 1 to 5 V.
Measurable Range and Measurement Span
You can specify an arbitrary range for a measurement span within the measurable
range and display the measured data.
0.0°C
300.0°C
(Lower limit of the measurement span)
1760.0°C
1500.0°C
(Upper limit of the measurement span)
Measurement span
Measurable range
(Example: TC Type R)
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