Rs-232/Rs-485 Serial Communication - Rabbit RabbitCore RCM2200 User Manual

D.1 RS-232/RS-485 Serial Communication
RCM2200
Prototyping Board
RCM2200
Prototyping Board
Sample Program:
PUTS.C
76
100 nF
J7
100 nF
PC0
3
PC1
4
PC2
5
PC3
6
J7
PC0
3
PC1
4
PD3
10
47 kW
Figure D-1. Sample RS-232 and RS-485 Circuits
in
SAMPLES\RCM2200
RS-232
1
C1+
3
C1–
4
C2+
5
C2–
T1IN T1OUT
11
R1OUT
R1IN
12
T2IN T2OUT
10
R2OUT R2IN
9
RS-485
4
D
1
R
3
DE
2
RE
SP483EN
.
VCC
100 nF
2
V+
6
V–
100 nF
TXD
14
RXD
13
TXC
7
RXC
8
VCC
680 W
6
A 485+
220 W
7
B 485–
680 W
RabbitCore RCM2200