(7)
IN/OUT C8H Operation Test
(
Preparation
)
Connect the pin
2
of the RS-232C connector with the pin 3.
(See Figure
5.21
"Pin connection" of item "RS-232C Interface Operating Test".
By
executing the test program in Figure
5.44,
you can confirm the signal shown in
Figure
5.45
in
U21
(P12).
10 OUT 144,192:OUT 216,3
20 OUT 183,3 :OUT 189,64:PRINT CHRS(12)
30 A=9
:OUT
200 ,A:B=INP(200>
48
IF
AOB GOT0 80
ELSE
PRINT
B;
78
GOT0 30
80 PRINT "ERROR"
Figure
5.44
Test
Program
-
/
Start
bir
Figure
5.45
Signal in
U21
(PI21
-
f
-
-
/-50ps
-
DO
-
-
-
-
-
-
- -
-
-
-D7
Data
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