FabiaTech Fanless Series FX5403, Руководство пользователя

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43
40 RETURN
b. Send out one character to COM1
10 REM Enable transmitter by setting DTR ON
20 OUT &H3FC, (INP(&H3FC) OR &H01)
30 REM Send out one character
40 PRINT #1, OUTCHR$
50 REM Check transmitter holding register and shift register
60 IF ((INP(&H3FD) AND &H60) >0) THEN 60
70 REM Disable transmitter by resetting DTR
80 OUT &H3FC, (INP(&H3FC) AND &HEF)
90 RETURN
c. Receive one character from COM1
10 REM Check COM1: receiver buffer
20 IF LOF(1)<256 THEN 70
30 REM Receiver buffer is empty
40 INPSTR$”
50 RETURN
60 REM Read one character from COM1: buffer
70 INPSTR$=INPUT$(1,#1)
80 RETURN
NOTE: The example of the above program is based on COM1 (I/O Address 3F8h).
The RS-485 of the FX5403 uses COM2. If you want to program it and
hardware setup, please refer to the BIOS Setup for COM2 address setup
and Chapter 5 “Technical Reference”: RS485 and RS422 Hardware Setup.