D/A Conversion Time - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4DA-ADP (4-channel Analog Output)
3U
2.4

D/A Conversion Time

This section describes the D/A conversion time.
2.4.1 When connected to a FX
1. D/A conversion and special data register update timing
D/A conversion is performed at every scan time of the PLC.
During execution of the END instruction, the PLC writes the output setting data of the special data registers,
performs D/A conversion of the data, and updates the analog output data.
2. D/A conversion during PLC stop
If the output holding function cancellation setting is enabled by the special device, the offset value will be
output.
If the output holding function cancellation setting is disabled, the output at switching from RUN to STOP will
be latched.
Just after power-on, however, the offset value will be output until operation begins.
3. D/A conversion speed (data update time)
During execution of END instruction, the output setting digital data per of 4 channel will be subject to D/A
conversion which takes 250 μs, after which the analog data will be output.
END instruction execution time will be 250 μs.
PLC User's Manual - Analog Control Edition
PLC
3S
FX -4DA-ADP
3U
Digital value
D/A
writing
conversion
D/A conversion
250 s
start command
/4ch
FX Series PLC
3S
Sequence
program
END instruction
2 Specifications
2.4 D/A Conversion Time
F-9
A
B
C
D
E
F
G
H
I
J