Specifications

Table Of Contents
70 Chapter 9 Pinout reference
Digi One, PortServer TS, and Multi-Port Serial Cards RJ-45 to DB-25M printer adapter
From
RJ-45
Signal Direction Signal To DB-
25
1 DCD RTS 4
2 RTS CTS 5
3 Ground Ground Shell
4 TxD RxD 3
5 RxD TxD 2
6 SG SG 7
7 CTS DTR 20
DSR 6 8 DTR
DCD 8
Pin 1 Pin 1
Female RJ-45 8-pin Male DB-25
Cable Adapter not to scale
* Arrows indicate which direction the signal is flowing
Notes:
All RJ45 cable adapters are 8-pin.
For use with Printers. This adapter utilizes the DTR signal of the serial device (instead of RTS) for hardware flow control (RTS/CTS)
Okidata printers may use SSD (pin 11) instead of DTR (pin 20) on DB25 side of above diagram. If this is the case, the
printer should be set to SSD+.
Altpin should be turned on when using this cable so that DTR will drive DCD (standard usage).
If altpin is turned off, the hardware signal on RJ45 pin 1 becomes DSR instead of DCD. This alternative can be used if
DCD is not required, and DSR is needed instead.