Omega DR130 SERIES, Руководство пользователя

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Sample Program
7
7.3 RS-422-A/RS-485 Sample Programs
This section describes sample program for a system using PC9801 series (NEC) with the RS-422-A/
RS-485 interface. We hope that these samples will aid you in creating your own program.
Configuration
Model : NEC PC9801 series
Language : N88-BASIC (Standard programming language on the PC9801 series)
Wiring system : four-wire system (both four-wire and two-wire systems are introduced in this
manual for the ASCII output of the measured data).
Setting the RS-422-A/RS-485 Parameter
Baud rate : 9600
Data length : 8
Parity : Even
Stop bit : 1
Address : 01
Setting the Personal Computer
Be careful when receiving BINARY data that the received data does not overrun the capacity of the
receive buffer in the personal computer which may be small as 255 bytes in some case.
Output the Setting Data
Read out the setting data from DR series, display them on CRT of the personal computer, and save
them to floppy disk.
10 ‘
20 OPEN “COM1:E81N” AS #1
30 OPEN “TS1.DAT” FOR OUTPUT AS #2
40 ‘
50 PRINT #1,CHR$(&H1B)+”O 01"
60 LINE INPUT #1,D$ :PRINT D$
70 PRINT #1,”TS1"
80 LINE INPUT #1,D$ :PRINT D$
90 PRINT #1,CHR$(&H1B)+”T”
100 LINE INPUT #1,D$ :PRINT D$
110 PRINT #1,”LF001,010"
120 LINE INPUT #1,D$
130 PRINT D$
140 PRINT #2,D$
150 IF LEFT$(D$,2)<>”EN” THEN GOTO 270
160 ‘
170 PRINT #1,CHR$(&H1B)+”C 01"
180 LINE INPUT #1,D$ :PRINT D$
190 CLOSE
200 END