Specifications

HYDROLOGICAL SERVICES
DL3 100-024 IMP
Issue 2: 15/11/2005
4.1.8 Dump Log (DUR, CLR, DURV, CLRV, LOG)
The loggers rain and river log data is stored in a compressed format in the on-board flash memory.
The dump rainfall command (DUR) unloads the historical rainfall record from the start of the record
to the most recent event stored. On completion of successful data retrieval, the memory remains
intact until cleared by the clear rain log user command (CLR). When the memory becomes full, with
Memory Wrap off, the logger stops logging and tacks a "MemFull" message onto the end of an event
message. The rainfall log may be dumped in ascii or hex format. The ascii format is readable (as
shown in section 4.2.1.) and the hex format must be interpreted by separate software which converts
it to ascii format. The hex format has the advantage that the data is still compressed and will
download faster. The dump command also allows for searching through the log and starting at a
specific location instead of dumping the complete log. See the On-line help below for syntax and see
section 4.2.1. for an example of the dumped rainfall record.
Anew command, MemoryWrap (MW), enables or disables the wrapping of memory. When memory
wrap is on, and the historical log becomes full, then the first data stored will be erased one block at
a time. (A block of Flash memory is equivalent to approximately 8100 rain events, or 8100
quadrature river events or 4050 4-20mA river events.) In this mode memory never becomes full, and
the most recent data is always available. It is advisable that when changing the state of the Memory
Wrap flag, the existing logged data be erased so that logging can start afresh.
On-line Help
DUR?
Dump Rainfall Log: Dumps historical data from the start to the most recent
event stored. NOTE: Time/Date referenced to H/W clock
Syntax: DUR/format/No of days/Time/Date<CR>
Format=A(ascii) or H(hex) No of days=1-99
Time=hh:mm Date=mm/dd/yy
Parameters from L to R are opt - See manual for details
Eg. DUR<CR> Dump all rainfall data in ascii
DUR/H<CR> Dump all rainfall data in hex
DUR/A/12/10:45/12/2/96<CR> Dump 12 days of ascii data starting at
10:45 on the 2nd of Dec 1996
More Eg. DUR/A<CR>Dump all rainfall data in ascii
DUR/A/2<CR> Dump 2 full days of ascii data starting 2 days
back from the current date, at 00:00 hours
DUR/A/1/13:40<CR> Dump 1 day of ascii data starting at 13:40 today
DUR/A/2/10:30/3<CR> Dump 2 days of ascii data starting at 10:30 on
the 3rd of the current month & year
DUR/H/15/10:30/2/12<CR> Dump 15 days of hex data starting at 10:30 on
the 12th of Feb this year