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Appendix D:
Program Examples
All of the program examples which follow do the
same thing, only the computer, language, or
interface is changed. The programs read the
Channel 1 and 2 Outputs and write the results to
the computer screen. In addition, the X6 analog
output port is ramped from 0 to 10V.
Program Example 1:
IBM PC, Basic, via RS232
In this example, the IBM PC's ASYNC port (known
as COM1: or AUX: to DOS users) will be used to
communicate with the SR510. Only two wires
between the IBM PC's ASYNC port and the
SR510 are needed (pins #2 & #3 of the RS232),
but pins 5,6,8 and 20 should be connected
together on the connector at the IBM end.
10 ′ EXAMPLE PROGRAM TO READ THE SR510 OUTPUT AND RAMP THE X6 ANALOG OUTPUT
20 ′ USING IBM PC BASICA AND THE COM1: RS232 PORT.
30 ′
40 ′
50 ′ ON THE REAR PANEL OF THE SR510, SET SWITCH #1 OF SW2 DOWN
60 ′ AND ALL OTHER SWITCHES IN SW2 UP. (9600 BAUD, NO PARITY)
70 ′
80 OPEN ″COM1:9600,N,8,2,CS,DS,CD″ AS #1
90 ′ SET UP COM1: PORT TO 9600 BAUD, NO PARITY, 8 DATA BITS, 2 STOP BITS,
100 ′ IGNORE CTS (CLEAR TO SEND), DSR (DATA SET READY),
110 ′ AND CD (CARRIER DETECT).
120 ′
130 PRINT #1, ″ ″′CLEAR UART BY SENDING SPACES
140 PRINT #1,″Z″′RESET SR510
150 FOR I = 1 TO 200: NEXT I ′WAIT FOR RESET TO FINISH
160 ′
170 X = 0 ′INIT X6 OUTPUT TO ZERO
180 ′
190 PRINT #1, ″Q″′READ OUTPUT
200 INPUT #1,V1 ′INTO V1
210 ′
220 PRINT ″OUTPUT = ″;V1
230 ′
240 X =X + .0025 ′INCREMENT X6 OUTPUT BY 2.5 MV
250 IF X > 10 THEN X = 0 ′RESET X6 RAMP
260 PRINT #1, USING ″X6, ##.###″;X ′SET X6 OUTPUT VOLTAGE
270 ′
280 GOTO 190 ′LOOP FOREVER