102 - Connecting Serial Devices DeviceMaster Installation and Configuration Guide: 2000594 Rev. F
Connecting Serial Devices
Screw Terminal (9) Loopback Signals
Use this drawing to wire a loopback, which is used in conjunction with application software (Test Terminal for
Windows or minicom for Linux) to test serial ports.
Wire the terminals together to create a loopback.
• TxD to RxD
• RTS to CTS to RI
• DTR to CD to DSR
Note: You can use Test Terminal (Windows) or minicom (Linux) to test the serial port. You can refer to Testing
Ports Using Test Terminal on Page 154 for Windows systems.
Connecting Serial Devices
Use the following information to connect the DeviceMaster with serial terminals.
1. Connect your serial devices to the appropriate serial port on the DeviceMaster using the appropriate
cable. You can build your own cables or loopbacks using the appropriate discussions.
Note: Refer to the hardware manufacturer’s installation documentation if you need help with connector pin
outs or cabling for the serial device.
2. You can refer to Network and Device LEDs on Page 167 for information about the LEDs.
TxD RxDRTS CTSCD DSR RI DTR
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