DPMS XPQ, User Manual, Page: 83 / 134

81
POWER INSTRUMENTS
address parameter range
1540H First group: alarming status 0~65536
1541H First group: parameter number 0~246
1542H First group: over range or reset value Related with parameters
1543H~1549H First group: occur time: yyyy mm:dd:hh:
mm:ss:ms
time
Table 4-3 alarming status of the 1st record
“alarming status” indicates information of the current status. It is a 16-bit
unsigned integer. Serial number is stored in the high 8 bits. Bit1 indicates logical
and.
Bit1=1,yes; Bit1=0,no. Bit0 indicates alarming is to setup or to recover.
Bit0=1, setup; Bit0=0, recover. Undefined bits are 0.
“Serial number” indicates which parameter is recorded.
“Value” indicates alarming limit value.
“Time” indicates the time with accuracy of ms.
Alarming event will set bit2 of “system status” to 1. At the same time,
corresponding flags will be set to 1 to indicate new data. It should be cleared
after the controller has read the data, then bit2 of the system parameter will be
set to 0.
Note: alarming records will not be lost during power off. The pointer will
point to the 1st record after it is powered on again.
Here is an example: