Contec IPC-BX/600(PCW) - Page 80

5. Each Component Function
User’s Manual
75
RX - (11)
RX+ (3)
TX - (10)
TX+ (2)
0 : Controlled by RTS
TE_SEL
1 : Controlled by TE_GATE
VCC
TXD
47k
Ω
6.2k
Ω
0 : Transmission prohibited
RTS
1 : Transmission permitted
0 : Transmission permitted
TE_GATE
1 : Transmission prohibited
0 : Receiving permitted
RE_GATE
1 : Receiving prohibited
RXD
6.2kΩ
47k
Ω
1
23
JP4
0
1
R
D
120Ω
Figure 5.19. Half-Duplex Connection Method
RX - (11)
RX+ (3)
TX - (10)
TX+ (2)
0 : Controlled by RTS
TE_SEL
1 : Controlled by TE_GATE
VCC
TXD
47k
Ω
6.2k
Ω
0 : Transmission prohibited
RTS
1 : Transmission permitted
0 : Transmission permitted
TE_GATE
1 : Transmission prohibited
0 : Receiving permitted
RE_GATE
1 : Receiving prohibited
RXD
6.2kΩ
47k
Ω
123
JP4
0
1
R
D
120Ω
Figure 5.20. Full-Duplex Connection Method
External I/O Circuit
4.7k
Ω
1/4W
External power
(12V-24VDC)
Input
contact
(PCOM)
(PI 0~2)
RAS connector
(External circuit)
PC817
Internal
reset
(IN)
4.7kΩ
Figure 5.21. Input Circuit