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5-6 Intellio C218Turbo /PCI User's Manual
Type 3: To connect Intellio C218Turbo/PCI to a DTE with 3-pin wiring.
If the “Hardware flow control” feature is set to “ON”, you must loop
back (or short) the RTS with CTS and DSR with DTR, DCD on MOXA
site, indicated in dash-lines of the following diagrams. If the “
Hardware
flow control
” feature is set to “OFF”, you could just leave RTS, CTS,
DSR, DTR, DCD open, ignoring the connection indicated in dash-lines.
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
Opt8A/S
Opt8A/S DTE Device
DB25 Female DB25 Male
RxD 2 2 TxD
TxD 3 3 RxD
GND 7 7 GND
RTS 5 4 RTS
CTS 4 5 CTS
DTR 20 6 DTR
DST 6 20 DSR
DCD 8 8 DCD
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
Opt8B/C
Opt8B/C DTE Device
DB25 Male DB25 Male
TxD 2 2 TxD
RxD 3 3 RxD
GND 7 7 GND
RTS 4 4 RTS
CTS 5 5 CTS
DSR 6 6 DTR
DTR 20 20 DSR
DCD 8 8 DCD