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FX Series Programmable Controllers Assigning System Devices 9
9-8
9.4.1 Setting the real time clock
The RTC can be set usin
g
the special data re
g
isters and control fla
g
s as follows:
Device
Number
Function Range
Device
Number
Comments
D8013 Seconds 0 to 59
M8015
Time
settin
g
Set ON to stop the clock.
When the clock is stopped the
time values can be reset.
The clock restarts when the fla
g
is reset to OFF.
D8014 Minutes 0 to 59
D8015 Hours 0 to 23
D8016 Date
1 to 31 (correct for
current Month)
M8016
Re
g
ister
Hold
The clock data in the data re
g
is-
ters is held. The clock still runs.
Use this to pause the data to
read the current time.
D8017 Month 1 to 12
D8018 Year
00 to 99 (1980 to
2079)
M8017
Minute
Roundin
g
When on rounds the time up or
down to the nearest minute.
D8019
Da
y
of
Week
0 to 6 (Sunda
y
to Sat-
urda
y
M8018
Clock
Available
Automaticall
y
set to indicate the
RTC is available.
M8019
Settin
g
Error
ON when the values for the RTC
are out of ran
g
e.
X00
M8015
M0
K30
D8013
MOV
K20
D8014
MOV
K10
D8015
MOV
K25
D8016
MOV
K4
D8017
MOV
K96
D8018
MOV
K4
D8019
MOV
M8017
X1
M0
PLF
The clock stops when X0 is ON.
The new values are set when X0 turns OFF.
X1 is used to reset the clock
to the nearest minute.
These devices are used as shown in the pro
g
ram on
the ri
g
ht.
Note:
The FX
2N(C)
has special instructions that
simplif
y
the settin
g
and use of the RTC.
See section 5.14 for more details.