Fluke Biomedical 05-450 - Manual (Page 20)

05-450
Users Manual
12
RS-232 Output
With the CAL MODE dipswitch in the left position, the Product dumps RS-232
data onto pin 4 of the 9-pin connector every 2 seconds.
An example program which shows how an IBM compatible PC can be used to
collect the data follows:
‘Demonstration Program
‘Model 05-450 communication program written for QuickBasic
‘This program causes the computer screen to display the data being dumped
from the Model 05-450.
‘Needs the following cable:
‘ Model 05-450 PC (9-pin) PC (25-pin)
‘ pin 4 TXD pin 2 pin 3
‘ pin 2 GND pin 5 pin 7
‘Cable connector has male pins on Model 05-450 side
‘Cable connector has female pins on PC side
‘open up communications with serial port #1
‘at 2400 bps (baud), no parity, 8 data bits, 1 stop bit
‘no handshaking, buffer size of 8k
OPEN “COM1: 2400,n,8,1,bin,CS0,DS0,CD0,RB0” FOR INPUT AS #1
‘open up filename
• for output
CLS ‘clear the screen
LOCATE 1
PRINT
‘Press Esc key to stop reading data.
COM(1) ON ‘enable coml trapping
ON COM(1) GOSUB Getcomport ‘if something comes in coml, then get it
WHILE (1) ‘loop until Esc key is hit
comment
•= INKEY•
IF comment
• = CHR• (27) THEN GOTO endloop
WEND
endloop:
COM (1) OFF
CLOSE#1
‘CLOSE COM port.
END
Getcomport:
WHILE LOC(1) <>0
ComportInput
•=INPUT•(1,#1)
‘bring in data from serial port
PRINT ComPortInput
•;
‘pint data to screen
WEND
RETURN
The RS-232 data includes the current radiation readings and the current
condition of the status lights. The data is presented in the following format:
BYTE1 0 x
BYTE2 x x
BYTE3 x OR x
BYTE4 x x
BYTE5 . .
BYTE6 x 0
BYTE7 Audio Status =1=on
BYTE8 High Alarm Status =1=on
BYTE9 Low Alarm Status =1=on
BYTE10 Over Range Status =1=on
BYTE11 Monitor Status =1=on
BYTE12 Error Code
BYTE13 Carriage Return (ODH)
BYTE14 Line Feed (0AH)