Campbell Scientific CR7 Measurement and Control System - Manual (Page 55)

SECTION 4. EXTERNAL STORAGE PERIPHERALS
4-3
aborted until the next time the *9 Mode is entered.
If the End of Dump location (window 2) is changed
while in the *9 Mode, the TPTR will be set to its
previous value when the *9 Mode is exited.
Changing the program and compiling moves the
PPTR to the current DSP location.
NOTE: A printer dump is aborted by
keying #.
TABLE 4.2-2. *9 Mode Entries
Display
Key ID:DATA Description
*9 09:00 Output Code
1X Printable ASCII
2X Final Storage Format
30 SM192/716 Storage
Module
31 Send File Mark to
SM192/716 than
send data
x = Baud Rate Code
0 300
1 1200
2 9600
3 76800
A 01:XXXXX Start of Dump location,
initially the PPTR
location, a different
location may be keyed in
if desired. To dump all
data in Final Storage,
enter into window #1 a
number 1 greater than
the End of Dump
location.
A 02:XXXXX End of Dump location,
initially the DSP location,
a different location may
be keyed in if desired.
A 03:00 Ready to Dump, to
initiate dump, key any
number then A. While
dumping, "09:" will be
displayed in the ID field
and the location number
in the Data field. The
location number will stop
incrementing when the
dump is complete.
4.3 STORAGE MODULE
The Storage Module stores data in battery
backed RAM. Backup is provided by an internal
lithium battery. The RAM is internal on the
SM192/716 and on a PCMCIA card on the
CSM1. Operating power is supplied by the CR7
over pin 1 of the CS I/O connector. When
power is applied to the Storage Module, a File
Mark is placed in the data (if a File Mark is not
the last data point already in storage).
The File Mark separates data. For example, if
you retrieve data from one CR7, disconnect the
Storage Module and connect it to a second
CR7; a File Mark is placed in the data. This
mark follows the data from the first CR7, but
precedes the data from the second.
The SM192 has 192K bytes of RAM storage;
the SM716 has 716K bytes. Both can be
configured as either ring or fill and stop
memory. The size of memory in the CSM1
depends on the PC card used. The CSM1 is
always fill and stop.
4.3.1 USE OF TWO STORAGE MODULES
It is possible to connect two Storage Modules to
the CR7 for on-line storage. One module must
be configured as fill and stop and the other as
ring memory (see Storage Module operator's
manual for configuring information). Data is
written to both modules simultaneously. The
module configured as fill and stop quits
accepting data once it is full while that with the
ring memory continues to store new data over
old. The Storage Modules must be retrieved
before the module configured as ring memory
wraps around memory a second time.
4.3.2 STORAGE MODULE USE WITH
INSTRUCTION 96
When output to the Storage Module is enabled
with Instruction 96, the Storage Module(s) may
be either left with the CR7 for on-line data
transfer and periodically exchanged, or brought
to the site for data transfer.
USE OF STORAGE MODULE TO PICK UP
DATA
The CR7 can tell when the Storage Module is
connected. Each time Instruction 96 is
executed and there is data to output, the CR7
checks for the presence of the Storage Module.