Comtrol DM Primo - Manual (Page 8)

DeviceMaster Primo Hardware Installation 8
The Serial Connector and Building Cables
6. If necessary, configure any RS-422 or RS-485 ports to match the previous unit.
7. Transfer all cabling from the old Primo to the new Primo.
8. It is not necessary to shut down and restart the server.
The Serial Connector and Building Cables
This subsection provides you with information about the serial port pinout,
building additional loopback plugs, and building several types of serial cables.
DB9 Male Pinouts Use the following illustration and table for DB9 male pinout data.
Building Additional
DB9 Loopback Plugs Loopback connectors are DB9 female serial port plugs, with pins wired together as
shown, that are used in conjunction with application software to test serial ports.
Note: Comtrol includes the Test Terminal (WCOM32) program on the CD for
Windows 98 and Windows NT drivers. See the on-line help for WCOM32 for
information about using these applications. Linux users can use MiniCom.
Wire the following pins together to replace
a missing RS-232 loopback plug:
• Pins 1 to 4 to 6
• Pins 2 to 3
• Pins 7 to 8 to 9
Pin RS-232 RS-422 RS-485
1 DCD TXDB(-) TXDB/RXDB(-)
2 RXD TXDA(+) TXDA/RXDA(+)
3 TXD RXDA(+)
4 DTR RXDB(-)
5 GND GND
6 DSR RTSB(-)
7 RTS RTSA(+)
8 CTS CTSA(+)
9 CTSB(-)
Pin 1 Pin 5
Pin 6 Pin 9
RS-232 Only
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