Mitsubishi Electric FX3G User Manual page 149

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD/FX -4AD (4-channel Analog Input)
3U 3UC
• For FX /FX
3G 3GC
Initial pulse
M8002
RUN monitor
M8000
T0
Clear data
history
X000
Temporarily stop
data history
X001
Temporarily stop
data history
X001
T0
*1. After setting the input mode, set the data writing time (waiting time) to 5 seconds or more for each
setting.
After this, if the same input mode is used, it is not necessary to set the input mode and waiting time
(T0 K50) again.
*2. The set input mode and the sampling time are retained in the 4AD EEPROM. Therefore, even if the
sequence program is deleted, the previously set functions will still be valid.
*3. If a large amount of history data is read out, the scan time of the PLC will be become longer. If the
scan time exceeds 200 ms, the CPU error indicator lamp will illuminate, and the PLC will stop.
Insert WDT instruction (watchdog timer refresh) between BMOV instructions.
PLC User's Manual - Analog Control Edition
/FX /FX Series PLCs
3U 3UC
FNC 79
K0 K0
TO P
T0
FNC 79
K0 K198
TO P
FNC 78
K0 K10
FROM P
FNC 79
K0 K199
TO P
FNC 79
K199
K0
TO P
FNC 79
K199
K0
TO P
FNC 79
K0 K200
TO
FNC 07
WDT
FNC 79
K0 K1900
TO
FNC 07
WDT
FNC 79
K0 K3600
TO
FNC 07
WDT
FNC 79
K0 K5300
TO
FNC 07
WDT
7 Examples of Practical Programs
7.3 Program That Uses Data History Function
Input modes of channels 1 to 4 will be
H3300 K1
specified.
K50 *1
K100 K1 The sampling time will be set to 100 ms.
The digital values set for channels 1
D0 K4
to 4 will be read out to D0 to D3.
Data history of all the channels will be
H000F K1
erased.
Data history of all the channels will be
H0F00 K1
temporarily stopped.
Temporary stoppage of data history will be
H0000 K1
canceled for all the channels.
Channel-1 history data (100 data samples)
D100 K100
will be read out to D100 to D199.
The watchdog timer will be refreshed.
Channel-2 history data (100 data samples)
D200 K100
will be read out to D200 to D299.
The watchdog timer will be refreshed.
Channel-3 history data (100 data samples)
D300 K100
will be read out to D300 to D399.
The watchdog timer will be refreshed.
Channel-4 history data (100 data samples)
D400 K100
will be read out to D400 to D499.
The watchdog timer will be refreshed.
*2
*3
*3
*3
*3
B-59
A
B
*2
C
D
E
F
G
H
I
J