Programming Of The Computer - Mitsubishi Electric FR-A5NR Instruction Manual

4.8 Programming of the Computer

(1) For full information on the communication protocols, whether communication operation is performed or
not, data format types, data formats, and data explanations, refer to the "Pr. 117 to Pr. 124" sections
of the inverter manual.
(2) Program example
When the operation mode is switched to computer link operation.
Program
Line number
10 OPEN"COM1:9600,E,8,2,HD"AS #1
20 COMST1,1,1:COMST1,2,1
30 ON COM(1)GOSUB*REC
40 COM(1)ON
50 D$="01FB10000"
60 S=0
70 FOR I=1 TO LEN(D$)
80 A$=MID$(D$,I,1)
90 A=ASC(A$)
100 S=S+A
110 NEXT I
120 D$=CHR$(&H5)+D$+RIGHT$(HEX$(S),2) : Addition of control and sum codes
130 PRINT#1,D$
140 GOTO 50
1000 *REC
1010 IF LOC(1)=0 THEN RETURN
1020 PRINT"RECEIVE DATA"
1030 PRINT INPUT$(LOC(1),#1)
1040 RETURN
Initial setting of I/O file
: Communication file opening
: Circuit control signal (RS, ER) ON/OFF setting
: Interrupt definition at data receive
: Interrupt enable
Transmission data setting
Sum code calculation
Data transmission
Interrupt data receive
: Interrupt occurrence at data receive
22
COMPUTER LINK FUNCTION