Mitsubishi Electric MELSEC FX3U Programming Manual page 607

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. 32-bit operation
Command
input
FNC169
DHOUR
[ +1, ] : Time after which
S S
[ +1, ] : Current value in units of hour
D D
1 1
+2
D
1
D
2
• Specify a latched (battery backed) type data register as
continuously used even after the PLC turns OFF.
If a general data type register is used, the current value data is cleared when the power of the PLC is
turned OFF or when the PLC mode switches from STOP to RUN.
• Even after the alarm output
• When the current value [
stopped.
For continuing the measurement, clear the current value stored in
Caution
Number of occupied devices
Two (16-bit operation) or three (32-bit operation) devices are occupied by
Make sure that these devices are not used in other controls for the machine.
Program example
In the program example shown below, when the accumulated X000 ON time exceeds 300 hours, Y005 turns
ON.
The current value less than one hour is stored in D201 in units of second.
X000
FNC169
HOUR
: Time after which
S
Specify a value in units of hour.
: Current value in units of hour
D
1
+1 : Current value less than one hour (unit: second)
D
1
: Alarm output destination
D
2
It turns ON when the current value
(In this example, it turns ON when the current value becomes 300 hours 1 second.)
S D D
1 2
is set to ON
D
2
Specify the high-order side in
The high-order side is stored in
: Current value less than one hour (unit: second)
: Alarm output destination
It turns ON when the current value [
turns ON, the measurement is continued.
D
2
+1, ] reaches the maximum value of 32-bit data, the measurement is
D D
1 1
S D D
1 2
K300 D 200 Y005
is set to ON
D
2
21 Real Time Clock Control – FNC160 to FNC169
21.9 FNC169 – HOUR / Hour Meter
+1, and the low-order side in
S
1
+1, and the low-order side is stored in
D
1
+1, ] exceeds the time specified in
D D
1 1
so that the current value data can be
D
1
to
D
1
D
exceeds the time specified in
D
1
.
S
1
.
D
1
S
+2.
D
1
.
1
.
S
605
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