Siemens SIMATIC S5-95F Manual page 300

The Integral Real-Time Clock
When you set the clock, you have to transfer only the data needed to implement a particular
function. For example, if you want to change only the clock function data, you do not have to enter
data for the time prompt function or for the operating hours counter.
Table 10-1 provides you with information about where specific clock data is located within the clock
data area. The explanations for Table 10-1 follow the table.
Clock Data
Area
(Data Word)
Current clock
0
time/date
1
2
3
4
Settings for clock
time/date
5
6
7
8
Time prompt
9
10
11
12 Current operating
hours
13
14
15
Settings for
operating hours
16
counter
17
18
Clock time/date after
a switch from RUN
19
to STOP or POWER
OFF (only if bit 5 in
20
the status word = 1)
21
* Significant only in the 12-hour mode Bit 7=1 means PM, bit 7 =0 means AM
10-4
Table 10-1. Clock Data in the Clock Data Area
Meaning Left Flag Word
---
Day
Year
Minute
---
Day
Year
Minute
---
Day
---
Minute
---
Minutes
Hours · 100
---
Minutes
Hours · 100
---
Day
Year
Minute
S5-95F
Right Flag Word
Weekday
Month
AM/PM (Bit 7) , hour
*
Second
Weekday
Month
AM/PM (Bit 7) , hour
*
Second
Weekday
Month
AM/PM (Bit 7) , hour
*
Second
Seconds
Hours
Hours · 10,000
Seconds
Hours
Hours · 10,000
Weekday
Month
AM/PM (Bit 7) , hour
*
Second
EWA 4NEB 812 6210-02