Instruction manual

SECTION 5. STG MODULE: SMS - STORAGE MODULE SOFTWARE
5-6 PC208W, Version 3.0, Instruction Manual
SM192/SM716
The SM192/716 ADVANCED STATUS screen
is similar to the CSM1 screen, but has
additional configuration facilities. These are
listed below.
Print Enable Mode
Data from 21X and CR7 dataloggers with older
PROMs, and data from non-datalogger devices
are stored in the Storage Module using the
“Print Enable” mode. Full details of this storage
method can be found in the SM192/716
Instruction Manual.
Baud Rate – Print Enable Mode
This is the printer baud rate when data are
collected by the Printer Enable (PE) method.
For this method of collection you must ensure
that the baud rate of the Storage Module and
the datalogger are matched. Most Campbell
Scientific dataloggers have selectable baud
rates. You can select the baud rate using the
Baud Rate setting box in the Print Enable Mode
section. The SM192/716 Instruction Manual
gives further details.
NOTE: The 76,800/9600 setting is the
default after an SM reset. In this setting the
SM can automatically change from
capturing data at 76,800 baud to capturing
data at 9600 baud. Baud rate errors (baud
rate mismatches between SM and
datalogger) cause the SM to increment its
error counter and enter a low power
standby state.
Encoding
These checkboxes allow you to select how data are
encoded in the Print Enable method of data storage:
Encode ASCII is the normal default setting. The
Storage Module will encode incoming Printer
Enable Method printable ASCII data and store it
as Campbell Scientific Final Storage Format
(binary) data.
No Encoding enables incoming data to be
stored “as is”, regardless of its format. This
permits storage of raw ASCII data.
NOTE: Raw ASCII data will take up much
more storage space than encoded data,
and so it is generally recommended that
data are always stored as binary.
Module Address
This shows the physical address of the Storage
Module. Changing the physical address will
not
change the selected target address.
See Target Address for further details.
Display Pointer
This has exactly the same function as the
Display Pointer for the CSM1/MCR1 (see
above).
Storage Mode
Two methods of memory allocation for storage
of data are provided – Ring Mode and Fill and
Stop, as explained below.
Ring Mode: When the storage module is
set to Ring Mode, data are stored
sequentially. When all memory locations
become full the ring memory “wraps
around” and new data are then written over
the oldest data stored in memory. To avoid
data loss, retrieve all data from the storage
module before this occurs.
Fill and Stop: When the storage module is
set to Fill and Stop, data are stored
sequentially, but, when all memory locations
become full, no more data are stored.
When multiple storage modules are used,
each should be assigned its own address
and set to Fill and Stop. When one module
is filled, data will then be stored in the next
module in the chain.
Test Battery (Unloaded)
The value shown under “Test Battery” is for the
state of the battery when compared to a 2.5V
DC reference without any load on the battery.
Test Battery (Loaded)
The battery can be checked when a 100 ohm
load is connected for 1 second. This test
shortens the overall battery life by
approximately 3 minutes, but it is a much better
test of the battery’s integrity. It is particularly
important to carry out a Loaded Battery Test if
the battery is more than four years old and you
are intending to leave the Storage Module
unattended to collect data for several months or