Mitsubishi Electric FX3G User Manual page 413

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD-PTW-ADP (4-channel Platinum Resistance Thermometer Data Input)
3U
2.4 A/D Conversion Time
This section describes the A/D conversion time.
2.4.1 When connected to a FX
1. A/D conversion and special data register update timing
A/D conversion is performed at every scan time of the PLC.
During execution of END instruction, the PLC performs A/D conversion, reads out the A/D converted data,
and then writes the data in the special data registers.
FX
2. A/D conversion during PLC stop
Even if the PLC is stopped, A/D conversion will be performed and the special data registers will be updated.
3. A/D conversion speed (data update time)
During execution of the END instruction, the A/D converted data of all 4 channels will be read out in 250 μs,
and the data read out will be written to the special data registers.
END instruction execution time will be 250 μs
PLC User's Manual - Analog Control Edition
PLC
3S
-4AD-PTW-ADP
3U
A/D conversion start
command
A/D
conversion
Digital value reading
250 s/4ch
FX Series PLC
3S
Sequence
program
END instruction
2 Specifications
2.4 A/D Conversion Time
A
B
C
D
E
F
G
H
J
J-9
I