I/O Conversion Characteristics - Mitsubishi MELSEC-Q series User Manual

3
SPECIFICATIONS
Remark
3.1.2
I/O conversion characteristics are used for converting the digital value written from the pro-
grammable controller CPU to an analog output value (voltage or current output), and rep-
resented by inclined straight lines when offset and gain values are included.
Offset value
The offset value is the analog output value (voltage or current) when the digital input value
set from the programmable controller CPU is 0.
Gain value
The gain value is the analog output value (voltage or current) when the digital input value
set from the programmable controller CPU is
4000 (in normal resolution mode)
12000 (when 1 to 5V, 0 to 5V, 4 to 20 mA, 0 to 20 mA or the user range setting1 to 3 is
16000 (when -10 to 10V is selected in high resolution mode).
3
- 2 3.1 Performance Specifications

3.1.2 I/O conversion characteristics

*1: Accuracy of offset/gain setting at ambient temperature
Q66DA-G needs to be powered on 30 minutes prior to operation for compliance to the specification
(accuracy).
*2: Accuracy per temperature change of 1 °C
Example: Accuracy when temperature changes from 25 to 30 °C
0.1% (Reference accuracy) + 0.008%/ °C (temperature coefficient)
change difference) = 0.14%
*3: The following indicates the external load resistance when output current is 20mA or more.
22mA
20mA
Output
current
See the user's manual for the CPU module being used for the general specifica-
tions for the Q66DA-G.
I/O conversion characteristics
selected in high resolution mode),
500 600
External load resistance
5 °C (temperature