Campbell Scientific PC208 Datalogger Support Software - Manual (Page 46)

SECTION 3. GRAPHTERM
3-2
3.1.2 ASYNCHRONOUS COMMUNICATIONS
ADAPTER
Options: COM1
COM2
COM3
COM4
GraphTerm will allow you to use COM1, COM2,
COM3, or COM4 in communicating with a
station. Functions of the PC201 card are not
supported other than as a PC COM port.
GraphTerm addresses COM3 and COM4 as
3E8 and 2E8 respectively.
NOTE: If COM3 or COM4 is specified,
refer to Appendix B.
Different ports can be used for different
stations. The COM port must look like a
standard IBM Serial Asynchronous
Communications Adapter which will allow the
use of interrupts for receiving characters.
NOTE: GraphTerm leaves the COM Port
and its interrupt completely disabled. The
Port must be reinitialized before it is used
(e.g., if the Port is used for a printer, the
DOS MODE command must be issued
before the PRINT command will address
the COM Port).
3.1.3 COMMUNICATIONS BAUD RATE
Options: 300
[600]
1200
[2400]
[4800]
9600
[19200]
[38400]
Valid baud rates for the dataloggers are 300,
1200 and 9600. The baud rates shown in
brackets are "hidden" and will only be displayed
if "H" is pressed to scroll the options. Use 1200
baud if the DSP4 is selected.
The baud rate for the CR7 with the Model 700
Control Module is set by a hardware jumper in
the control module. The GraphTerm baud rate
must be set to that same baud rate.
3.1.4 DATA FILE FORMAT
Options: Comma Separated ASCII
As stored in datalogger
"Comma Separated ASCII" strips all IDs,
leading zeros, unnecessary decimal points and
trailing zeros, and plus signs. Values are
separated by commas. Arrays are separated by
Carriage Return Line Feed. Comma Separated
ASCII requires approximately 6 bytes per data
point.
Example:
1,234,1145,23.65,-12.26,625.9
1,234,1200,24.1,-10.98,650.3
"As Stored in Datalogger" stores data in the
file exactly as received from the datalogger.
This is in binary Final Storage Format. See the
datalogger operator's manual for a description
of the Final Storage format.
3.1.5 FINAL STORAGE COLLECTION AREA
The CR10(X) and CR500 dataloggers may be
programmed to have two Final Storage areas.
You must select Area 1 (default) or Area 2
(optional) Final Storage Area. If another
datalogger is selected, this parameter will
automatically be labeled "not applicable."
3.1.6 INTERFACE DEVICE
Options: End
SC32A
Hayes Modem
Number:
RF Modem
Path
MD9 Addr:
RAD Modem
SC95 Short Haul
Generic Modem
Number:
Up to three interfaces can be between the
computer and the datalogger. After the first
interface device is entered, GraphTerm will
prompt for Interface Device "#2:", etc.
Appendix A describes the Generic Modem
option.
The Hayes Modem TM requires a telephone
number. The number can be entered as a
continuous string (e.g., 18017532342) or with
dashes or spaces (e.g., 1-801-753-2342).