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Bit Assignment of the System Data Words
System data words
RS 96 to RS 99
RS 96
8 - 32
Real-time clock
The current date and time of day are kept in system data areas RS 96
to RS 99 and can if necessary be read out from these locations.
15
RS 96
Seconds
RS 97
Hours
RS 98
Day
RS 99
Year
The clock is updated by a 10 msec. pulse.
Seconds and 1/100 seconds (address: E F060H):
Table 8-13
Structure of RS 96 (real-time clock: seconds, 1/100 seconds)
Bit no.
Assignment
15
Seconds, tens,
14
permitted: 00H to 05H
13
12
11
Seconds, units,
10
permitted: 00H to 09H
9
8
7
1/10 second,
6
permitted: 00H to 09H
5
4
3
1/100 second,
2
permitted: 00H to 09H
1
0
1/10, 1/100 seconds E F060H
Minutes
Day of the week
Month
High byte
Low byte
CPU 948 Programming Guide
C79000-G8576-C848-04
0
E F061H
E F062H
E F063H
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