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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
21 Real Time Clock Control – FNC160 to FNC169
21.2 FNC161 – TZCP / RTC Data Zone Compare
Cautions
1) Number of occupied devices
Three devices are occupied respectively by , , , and .
Make sure that these devices are not used in other controls for the machine.
2) When utilizing the time (hour, minute, and second) of the real time clock built in a PLC
Read the values of special data registers by TRD (FNC166) instruction, and then specify those word devices as
the operands.
Program example
S
1
S
2
S
3
D
Turns ON in the case of " ".
Turns ON in the case of " ".
Turns ON in the case of " ".
The setting range of "hour" is from 0 to 23.
The setting range of "minute" is from 0 to 59.
The setting range of "second" is from 0 to 59.
S
1
: Specify the lower limit of the comparison time zone in "hour", "minute" and "second.
S
1
+1 and +2S
1
,
S
2
S
2
+1 and
S
2
+2
, : Specify the upper limit of the comparison time zone in "hour", "minute" and "second.
S
S
+1 and +2S
, : Specify the time data in "hour", "minute" and "second.
+1 and +2D
D
D
, : Turn ON or OFF according to the comparison result.
X000
FNC161
TZCP
D 20 D 30 D 0 M 3
S
1
S
2
S
D
M3
>
M4
M5
↑
Even if X000 is OFF and TZCP instruction is not executed, M0
to M2 hold the status before X000 turned OFF.
D1 (minute)
D0 (hour)
D2 (second)
D21(minute)
D20 (hour)
D22 (second)
D 31 (minute)
D 30 (hour)
D 32 (second)
≤≤
>
D21(minute)
D20 (hour)
D22 (second)
D1 (minute)
D0 (hour)
D2 (second)
D1 (minute)
D0 (hour)
D2 (second)
D 31 (minute)
D 30 (hour)
D 32 (second)