When Connected To A Fx /Fx 3Uc Plc - Mitsubishi Electric MELSEC-FX3S Series Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD-ADP (4-channel Analog Input)
3U
2.4.3 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 -4AD-ADP
3U
n'th
A/D
conversion
200 s/4ch
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. If two or more analog special adapters are connected
During execution of the END instruction, data will be read out from all the connected adapters (in the order of
1st adapter → 2nd adapter... 4th adapter).
4. 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 200 μs,
and the data read out will be written to the special data registers.
END instruction execution time will be "200 μs × number of connected analog adapters."
PLC User's Manual - Analog Control Edition
/FX PLC
3U 3UC
FX -4AD-ADP
3U
1st
A/D conversion start
A/D
conversion
Digital value reading
200 s/4ch
A/D conversion start
Digital value reading
FX /FX Series PLC
3U 3UC
Sequence
program
command
END instruction
command
2 Specifications
2.4 A/D Conversion Time
C-11
A
B
C
D
E
F
G
H
I
J