A/D Conversion Time - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -2AD-BD (2-channel Analog Input)
3G
2.3

A/D Conversion Time

This section describes the A/D conversion time.
2.3.1 For FX Series PLC
3S
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.
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 END instruction, the A/D converted data of all 2 channels will be read out in 180 μs, and
the data read out will be written to the special data registers.
END instruction execution time will be 180 μs.
PLC User's Manual - Analog Control Edition
FX
3S
Sequence Program
END instruction
A/D conversion
start command
FX
Series PLC
Digital value
reading
A/D
conversion
180 s
/2ch
-2AD-BD
3G
2 Specifications
2.3 A/D Conversion Time
D-9
A
B
C
D
E
F
G
H
I
J