User manual

Table Of Contents
IMPORTANT
McLane recommends that the RTC be set during the power-up sequence. When the MMP is
powered on, the clock defaults to January 1,1970, 00:00:00. The operator can set the clock to
any date and time in the allowed range and the count will continue from the new value.
[EXIT] RTC
WDC
synchronized
Enter correct time[12/30/2004 11:31:58]? 12 30 04 11 33 00
Clock reads 12/30/2004 11:33:00
Change time & date (Yes/No) [N] ? y
Setting watchdog clock . . . done.
Type ‘1’
[ENTER]
Type date, time
[ENTER] to sets
RTC
Selection ? 1
Clock reads 12/30/2004 11:31:58
Enter date as MM DD YY HH MM SS
Enter year 2001 as 1, 01, 101, or 2001
Figure G-3: Power Up Sequence
Diagnostics is a scrolling display of system status information that includes the RTC, the
WDC, the battery voltage and the motor current (mA). The nominal voltage of the lithium
battery pack is 10.8 V. A new battery generates approximately 11.6 V but drops to the nominal
value after some use and stabilizes for most of the battery’s usable life.
The accuracy of the RTC is approximately 1 minute per month. There are variations
from one unit to the next and there is some dependence on temperature. A working estimate of
temperature dependent clock error is 2.5 seconds per day at 25°C, 0.0 seconds per day at 20°C,
and 2.7 seconds per day at 0°C.
<2> Diagnostics
G-6