To switch the temperature unit from “_C” to “_F” for temperature unit, switch
the setting of the _C/_F selection” parameter to [ ] from [ ].
About the tempera-
ture unit
CHAPTER 3 BASIC OPERATI ON
E5EK
3--4
3.2 Setting Input Specifications
• Set the type No. (0 to 21) in the “input type” parameter. The factory
setting is “2: K1 (thermocouple).”
• For details on input types and setting ranges, see page 5-26.
• When the voltage input and current input are selected, scaling
matched to the control is required.
• The “scaling upper limit”, “scaling lower limit” and “decimal point”
parameters (setup mode) are use for scaling.
• The “scaling upper limit” p arameter sets the physical quantity to b e
expressed by the upper limit value of input, and the “scaling lower
limit” parameter sets the physical quantity to be expressed by the
lower limit value of input. The “decimal point” parameter sets the
number of digits past the decimal point.
• The following figure shows scaling example of 4 to 20 mA input. After
scaling, the humidity can be directly read. In this case, the “decimal
point” parameter is set to “1”.
100%FS
0
Readout (humidity)
Scaling upper limit
value (95.0%)
Scaling lower limit
value (10.0%)
Input (4 to 20 mA)
• When temperature input is selected, scaling is not required. This is
because input is treated as the “temperature” as it is matched to the
input type. However, note that the upper and lower limit values of the
sensor can be shifted. For example, if both the upper and lower limit
values are shifted by 1.2_C, the process value (before shift) is regarded
as 201.2_C after shift when input is 200_Cbeforeshift.
• To set input shift, set shift values in the “input shift upper limit” and
“input shift lower limit” parameters (level 2 mode).
0
100
Temperature
Upper limit value
Lower limit value
Input shift upper limit value
After shift
Before shift
Input shift lower
limit value
Input (%FS)
JInput type
JScaling
F Input shift
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