120
13
Options
120
Op
tio
n
s
Chapter
13
Current output signals extraction method
Connect an external device (input resistance
500
Ω
or less) to CUR. and GND of the F325
before using.
D/A zero/gain setting
D/A converter of the F325 sets an indicated
value outputting 4mA (D/A zero setting value)
and an indicated value outputting 20mA
(D/A full scale setting value) respectively to
obtain analog output. Input of each setting value
is performed in D/A zero/full scale setting.
●
Setting sample
D/A output mode............................ 0 (linked with indicated values)
D/A zero setting ............................. 00500
D/A full scale setting ..................... 02500
Caution
●
D/A converter current output is optional.
●
Do not apply voltage from outside. This will cause damage.
Also, connecting capacity load may cause oscillation.
External device
Input resistance
500
Ω
or less
Inside Outside
F325
SIG
CUR.
GND
+
-
FG
D/A zero
20
Current (mA)
Resolution
Indicated value
4
D/A full scale
1/10000
setting value
setting value
Indicated
value
Current
(mA)
480
3.84
zero ->
500
4.00
1000
8.00
1500
12.00
Full scale setting ->
2500
20.00
2520
20.16
D/A zero
20
Current (mA)
Resolution
Indicated value
4
D/A full scale
1/10000
500
2500
setting value
setting value