User`s manual

86 RabbitCore RCM2100
D.1 RS-232/RS-485 Serial Communication
Figure D-1. Sample RS-232 and RS-485 Circuits
Sample Program: PUTS.C in SAMPLES\SERIAL.
VCC
100 nF
100 nF
1
3
4
5
100 nF
100 nF
R2OUT
R2IN
R1OUT
R1IN
T2OUT
T2IN
T1OUT
T1IN
11
10
12
9
14
7
13
8
RXC
RXB
TXC
TXB
PC2
PC5
PC3
PC4
V+
V
2
6
C1+
C1
C2+
C2
J1
28
30
27
29
RS-232
RabbitCore
RCM2100
J1
3
2
1
4
6
7
A
B
D
R
DE
RE
PC0
PC1
PD0
25
26
33
47 kW
680 W
680 W
220 W
485+
485
VCC
RS-485
RabbitCore
RCM2100
SP483EN