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Appendix D
Serial Port Information
ENET-232 and ENET-485 Series User Manual
DB-25 Connector
Figure D-7 and Table D-3 give the pin locations and descriptions of the
DB-25 connector, which is on the optional DB-9 to DB-25 converter.
PIN 13
PIN 1
Figure D-7. DB-25 Connector Pin Locations
Table D-3. DB-25 Pin Descriptions
DB-25 Pin
2
3
4
5
6
7
8
20
22
Pins not listed in this table are No Connect.
232 Signal
TXD
RXD
RTS
CTS
DSR
GND
DCD
DTR
RI
D-8
PIN 25
PIN 14
485 Signal
RTS+ (HSO+)
CTS+ (HSI+)
RTS– (HSO–)
TXD+
CTS– (HSI–)
RXD–
GND
RXD+
TXD–
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