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S5-115U Manual
DB2 STL
0:
KH = 0003;
1:
KH = 1402;
2:
KH = 8908;
3:
KH = 0000;
4:
KH = 0103;
5:
KH = 1402;
6:
KH = 8908;
7:
KH = 0000;
8:
KH = 0003;
9:
KH = 1402;
10:
KH = 0009;
11:
KH = 0000;
12:
KH = 0000;
13:
KH = 0001;
14:
KH = 0000;
15:
KH = 0000;
16:
KH = 0012;
17:
KH = 0000;
18:
KH = 0000;
19:
KH = 0000;
20:
KH = 0000;
21:
KH = 0000;
22:
Correction Value
To compensate for clock inaccuracy due to the effect of temperature, you can enter a correction
value in system data word (SD) 12 (EA18
The correction value (in seconds) is based on an operating time of 30 days, i.e. if you see that the
clock of the CPU 943/944 has lost, say, 20 seconds in 30 days, the correction value is +20.
Internally, the operating system corrects the clock every hour by a value smaller than one second.
This ensures that the clock does not "jump" a second (the correction value is read and checked
only once per hour). This compensation is unaffected by the mode selected, i.e. it functions in
both STOP and RUN mode.
Correction value range:
You must specify the correction value in "KF" format.
Following an OVERALL RESET, the default value "0" is in SD 12.
If a nonvalid correction value is used, the operating system sets bit No.15 in SD11; in this case, the
correction value is "0".
The time is not corrected on POWER OFF. On POWER-UP, the time correction is updated if the CPU
had battery backup during this time. This correction update is implemented only if the powered-
down state does not last longer than six months. If the CPU remains off for more than six months,
the operating system sets bit 15 in SD11 on POWER-UP and does not correct the time.
EWA 4NEB 811 6130-02b
--,WEEKDAY
DAY, MONTH
YEAR, HOUR + AM/PM BIT
MINUTE, SECOND
LEAP YEAR, WEEKDAY //SETTING
DAY, MONTH
YEAR, HOUR + AM/PM BIT
MINUTE, SECOND
--,WEEKDAY
DAY, MONTH
--,HOUR + AM/PM BIT
MINUTE,SECOND
--,SECONDS //CURRENT HOURS OF OPERATION
MINUTES, HOURS
HOURS X 100, HOURS X 10000
--,SECONDS
MINUTES, HOURS
HOURS X 100, HOURS X 10000
--,WEEKDAY // CLOCK AFTER STP/RUN
DAY,MONTH
YEAR,HOUR
MINUTE, SECOND
).
H
- 400 to 0 to+400 (no correction at "0").
Integral Real-Time Clock
Description
//CURRENT TIME
//PROMPT TIME (SETTING)
//SETTING HOURS OF OPERATION
13-5
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