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Mitsubishi Electronics FX3S-MT/ESS Benutzerhandbuch

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11 Use of Built-in Analog
101
FX
3S
 Series Programmable Controllers
User's Manual - Hardware Edition
11
Bui
lt-
in Anal
og
12
O
utpu
t Wi
ring
13
Wiri
ng for
Va
rious U
ses
14
Te
st R
un,
M
ain
tenanc
e,
Troub
le
shooting
15
Oth
er Ex
tensi
on
U
nit
s and
Opti
ons
16
Displ
ay
 Modul
e 
(FX
3S
-5
D
M
)
17
Me
m
ory
C
ass
ette
A
Spec
ial D
evices 
(M
8000-,
 D8000-)
B
Instruc
tion Li
st
C
Di
sc
onti
nued
model
s
11.3 Built-in analog input function
11.3
Built-in analog input function
11.3.1 Outline of functions
The main unit has two built-in analog voltage inputs (shown in the figure below).
A/D conversion data will be automatically written to special data registers of the PLC.
11.3.2 Applicable PLC
The following models have built-in analog inputs.
11.3.3 Analog input performance specifications
Applicable PLC
FX3S-30MR/ES-2AD
FX3S-30MT/ES-2AD
FX3S-30MT/ESS-2AD
Item
Input specification
Analog input range
0 to 10 V DC (Input resistance: 115.7 kΩ)
Absolute maximum input
-0.5 V, +15 V
Digital output
10 bits, binary
Device allocation
D8270 (The digital value of CH1 is stored) 
D8271 (The digital value of CH2 is stored) 
Resolution
10 mV (10 V/1000)
Total accuracy
± 1.0 % (± 100 mV) for 10 V full scale 
(when ambient temperature is 25 °C ± 5 °C)
± 2.0 % (± 200 mV) for 10 V full scale 
(when ambient temperature is 0 °C to 55 °C)
A/D conversion time
180 μs
(The data will be updated at every scan time of the PLC.)
Input characteristics
Insulation method
No insulation between each channel or the PLC.
Occupied points
0 point 
(This number is not related to the maximum number of input/output points of the
PLC.)
Analog input
enlarged view
V-
V2+
V1+
Digital output
Analog input
0
10.2V
1020
1000
10V