S
YSTEM
P
ARAMETERIZATION AND
O
PERATION
6842 GPS Slim Line System - V09.01
41 / 98
hopf
Elektronik GmbH
Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
4.1.2.10 Error Byte
Erroneous functions or modules are displayed in the Error Byte for faster fault analysis. Logic
"0" indicates that the function or module is operating perfectly. Logic "1" indicates that there
is a fault condition.
Selection frame:
S H O W E R R O R -
B Y T E Y / N _
Display frame:
B I T 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 _
At present the following bits are allocated in the Error Byte:
Bit 7 = Free
Bit 6 = Free
Bit 5 = Free
Bit 4 = Free
Bit 3 = Free
Bit 2 = Error in the quartz frequency adjustment
Bit 1 = Error in GPS week counter
Bit 0 = Error in the local time to UTC time offset calculation
Error Bit 2 = 1
There is an error in the internal adjustment of the quartz frequency. The specified system
accuracy and freewheel stability can't be guaranteed. According to the error the system
stays in status '
C
' (crystal).
Error Bit 1 = 1
The GPS receiver is unable to detect the correct time frame due to erroneous base
initialization.
It is necessary to re-enter the time and date, the time offset and the changeover points of
time for summer / winter time (if used).
Error Bit 0 = 1
The base initialization of the System is missing in order to calculate the relation between
UTC time and local time.
It is necessary to re-enter the time offset and the changeover points of time for summer /
winter time (if used).
For further error analysis see
Chapter 7 System Indicators / Fault Analysis /
Troubleshooting
.
4.1.3 S.CLOCK Menu - Back-up Clock Control with Function Board 7406
After selecting the main menu by pressing the
ENTER
key the figure
3
is entered. The
following selection frame appears:
Selection frame:
S L A V E C L O C K N O .
1 - 4 > _
Further information and an explanation of the parameters can be found in the description of
the Function Board 7406.
