Comtrol UP DeviceMaster Installation - Manual (Page 41)

Hardware Installation and Configuration Guide: 2000451 Rev. J Connecting Serial Devices - 41
Connecting Serial Devices
This section discusses connecting your serial devices to the DeviceMaster UP. It
also provides you with information to build serial cables and loopback connectors
to test the serial ports.
• DB9 Connectors
• RJ45 Connectors on Page 44
• Serial Terminals (4) - 1E on Page 47
• Serial Terminals (8) - 2E on Page 49
Note: Go to Building the Serial Ribbon Cable on Page 16 for connector
information for the DeviceMaster UP 1-Port Embedded adapter.
Make sure that you have configured the ports using the NS-Link driver
or SocketServer for the correct communications mode before
connecting any devices. The default mode is RS-232. There is a remote
possibility that connecting a serial device for the wrong mode could
damage the serial device.
Note: If you have a DeviceMaster UP with 16-ports, use the DeviceMaster UP 16-
Port Hardware User Guide because the RJ45 connectors are different.
Note:
DB9 Connectors
This subsection provides the following information:
• Connector pin assignments (below)
• DB9 Null-Modem Cables (RS-232) on Page 42
• DB9 Null-Modem Cables (RS-422) on Page 42
• DB9 Straight-Through Cables (RS-232/485) on Page 42
• DB9 Loopback Plugs on Page 43
• Connecting DB9 Serial Devices on Page 43
Caution
DB9 Connector Pinouts
Pin RS-232
RS-422
RS-485 Full-Duplex (Master/Slave)†
RS-485
Half-Duplex
1 DCD Not used Not used
2 RxD RxD- Not used
3 TxD TxD- TRxD-
4 DTR Not used Not used
5 GND GND GND
6 DSR Not used Not used
7 RTS TxD+ TRxD+
8 CTS RxD+ Not used
9 RI Not used Not Used
† Only 2-port models support RS-485 full-duplex.