Examples Of Communication Programs - Toshiba Tosvert RS485 Instruction Manual

4.6. Examples of Communication programs

According to the hardware configuration of the computer used, select a serial output port. To use an
RS232C port on the computer, you will have to prepare an RS232C-RS485 conversion unit sepa-
rately.
An USB-RS485 conversion unit (USB0001Z) is available as our standard offering.
Ex. 1: BASIC program for monitoring the output frequency continuously (RS232C, ASCII mode)
◊ Monitoring the output frequency continuously
1) Examples of programs
2) Examples of program execution results (stop command issued during 80 Hz operation)
10 OPEN "COM1:9600,E,8,1" AS #1
20 A$="FE00"
30 PRINT #1,"("+"R"+A$+")"
40 INPUT#1,B$
50 AAA$="&H"+MID$(B$,7,4)
60 F$=LEFT$(STR$(VAL(AAA$)/100),6)
70 PRINT " Output frequency =";F$+"Hz"
80 GOTO 20
Output frequency = 80 Hz ...
Output frequency = 79.95Hz
:
:
Output frequency = 0Hz
(Toshiba version of Advanced BASIC-86 Ver. 3.01.05J)
--- 9600 baud, even parity, 8-bit length, 1 stop bit
--- Specifies the communication number for
monitoring the output frequency.
--- Transmits data to the inverter.
Note: The carriage return code is added
automatically.
--- Receives data returned from the inverter.
--- Extracts only data items from the data re-
turned.
--- Converts data into decimal form.
--- Displays the output frequency.
--- Repeats.
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