Db25 Serial Cables And Loopback Plugs; Fan-Out Cable Signals - Comtrol RocketPort INFINITY User Manual

Connecting Serial Devices

DB25 Serial Cables and Loopback Plugs

Fan-out Cable
Signals
14 - Connecting Serial Devices
This section describes DB25 cables and loopback plugs for the following models:
•

Fan-out Cable Signals

• Interface Box Signals
• DB25 Null-Modem Cables (RS-232)
• DB25 Null-Modem Cables (RS-422 or RS-485 Full-Duplex)
• DB25 Straight-Through Cables (RS-232 or RS-485 Half-Duplex)
• DB25M: Fan-out Cable Loopback Plugs
• DB25F: Standard Interface Box
• DB25M: Surge Interface Box Loopback Plugs
Note: Refer to the manufacturer's installation documentation if you need help
with connector pinouts or cabling for the serial device.
Refer to the manufacturer's installation documentation if you need help with the
connector pinouts or cabling for the serial device.
DB25 Male Connector Signals (Quad/Octacables)
Pin RS-232
1 Not used
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 SIG GND SIG GND
8 DCD
9 to 19 Not used
20 DTR
21 Not used
22 RI
23-25 Not used
Ground must be tied to signal ground.
(quadcable and octacable)
on Page 15 (standard and surge models)
on Page 15
on Page 16
on Page 16
Pin 1 Pin 13
Pin 14 Pin 25
RS-485
RS-422
(Full-Duplex)
Not used Not used
TxD- TxD-
RxD- RxD-
TxD+ TxD+
RxD+ RxD+
Not used Not used
SIG GND
Not used Not used
Not used Not used
Not used Not used
Not used Not used
Not used Not used
Not used Not used
RocketPort INFINITY User Guide: 2000465 Rev. G
on Page 16
on Page 16
on Page 17
RS-485
(Half-Duplex)
Not used
TRxD-
Not used
TRxD+
Not used
Not used
SIG GND
Not used
Not used
Not used
Not used
Not used
Not used