Campbell Scientific SM192/SM716 Storage Modules - Manual (Page 12)

SECTION 2. STORING DATA FROM CR10, 21X, AND CR7
2-3
2.1.2 USE OF TWO STORAGE MODULES WITH
21X OR CR7
For large volumes of data, two SMs can be
connected to the 21X or CR7. Use SMCOM to
set one SM as Fill and Stop, and the other as
Ring Memory.
2.2 *8 AND *9 MODE -- KEYBOARD
INITIATED DATA TRANSFER
2.2.1 *8 MODE - CR10
The *8 Mode is used to manually initiate a Final
Storage Data transfer from the CR10 to an
external peripheral. Data transfer rate is 9600
baud. Refer to the discussion of the *8 Mode
(Section 4.2) in the CR10 Operator's Manual for
full details.
2.2.2 *9 MODE - 21X OR CR7
The F*9 Mode in the 21X and CR7 dataloggers
is used to transfer a specified block of data from
Final Storage to the Storage Module. Consult
the appropriate datalogger manual for details.
This function is different from the *9 Mode in the
CR10.
2.3 STORING BURST MEASUREMENT
DATA FROM THE CR10 OR 21X
The BURST Measurement is a special
datalogger instruction used to make high rate
analog voltage measurements. Two options
are available for data retrieval with this
instruction: 1) Data are stored in datalogger
Input Storage Locations or 2) Raw data are sent
out the datalogger serial port. In the second
case, the Storage Module can capture the data
at 76,800 baud.
BURST data is output by the datalogger in a
unique format which includes calibration
measurements at the beginning and end of the
series of measurements. SPLIT will translate
this BURST data. (Section 4.3.1 in the PC208
manual.)
2.3.1 BURST DATA WITH CR10
The CR10 requires a special PROM to use the
BURST Measurement Instruction (23). Keying
a "3" in the second digit from the right in
Parameter 04 of Instruction 23 selects the
Storage Module as the destination of the
BURST data. All SM's connected should be set
to Fill and Stop and have consecutive
addresses. The BURST data will be sent to the
first available (lowest addressed) Storage
Module, followed by the next lowest addressed,
and so on.
2.3.2 BURST DATA WITH 21X
To send BURST Measurement (Instruction 23)
data to the Storage Module from the 21X, set
the Destination option (Parameter 04) to 2 for
Serial port output at 76,800 baud.