Contec N Series, Руководство пользователя

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2. Setup
12
COM-4PDHN-USB
- Full -duplex
Figure 2.3. Example Connection Oneself loop to RTS and CTS in Full Duplex
The figure below shows the circuit associated with the data transfer mode setting switch and terminator
setting switch. Each channel shares the same switch and the bits to be set are vary.
Figure 2.4. Setting Switch Circuits
RxD
TxD
Terminator (Bit 9) Terminator (Bit 7)
Terminator (Bit 7) Terminator (Bit 9)
TxD
RxD
SW2 SW2
1 2 3 4 5 6
O N
TERM MODE
1 2 3 4 5 6
O N
TERM MODE
RxD TxD
RxD TxD
Inserted Not inserted
SW1 - 4 SW1 - 4
TxD+
TxD-
RxD+
RxD-
RTS
DCD
DTR
DSR
RI
CTS
SIN
SOUT
Terminator
1/2W 100
Ω
2 1
Terminator
3
4
5
6
Data transfer mode