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CHAPTER 3. INSTALLATION & INITIAL SETUP
This section describes how to install the VESR424D Serial Server and configure the device.
NOTE: In this section, devices to be connected to the serial server's serial connections are referred to as the "serial
device".
CONNECTING THE POWER SUPPLY
Connect a DC power supply to the power terminals on the side of the serial server. Polarity of
the wires is indicated underneath each connector. Acceptable voltages are between 10 VDC
and 58 VDC. The power supply must be capable of supplying 6 Watts.
NOTE: the terminal block must be used for Class 1 Division 2 applications; the barrel jack cannot be used for these
applications. See the specification tables for further information.
CONNECTING VESR424D SERIAL SERVER TO SERIAL DEVICES
The VESR424D Serial Server can be connected to serial devices using RS-232, RS-422, RS-
485 2-wire, or RS-485 4-wire communication via the uses DB9M connectors.
RS-232
VESR424D uses DB9M connectors that support seven RS-232 signal lines (TD, RD, DTR,
DSR, RTS, CTS, DCD) plus Signal Ground.
Signals are single-ended and referenced to Signal Ground. Default communications parameters
are 9600, 8, N, 1 (9600 baud, 8 data bits, no parity, 1 stop bit), and no flow control.
NOTE: VESR424D is configured as DTE. If it is connected to a computer or other DTE device, use a null modem (cross-
over) cable. If the serial device is configured as a DCE, use a straight-through cable.
Figure 9. Power Supply Connections
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VESR424D Serial Server
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