Measurement-computing PCI-COM422/485 Manual de usuario descargar pdf (Pagina 14)

3. HARDWARE CONNECTIONS

The PCI-COM422/485 series provides 9-pin female “D” (DB9M) connectors that extend through the

backplate of the board.

3.1

DB9F CONNECTIONS

The connectors on the PCI-COM422/485 boards provide the pin-out shown in Figure 3-1 below. The

view shown is looking into the connector.

Figure 3-1. PCI-COM422/485 Connector Pinout

3.2

PORT IDENTIFICATION

The PCI-COM422/485/2 port identities are shown in Figure 3-2 below:

Figure 3-2. PCI-COM422/485 Board Port Locations

3.3

CHANGING THE COM PORT ASSIGNMENTS

In Windows 95/98, the PCI-COM ports is automatically installed, starting at COM5: (if available).

Alternatively, the next available port is assigned if COM5 is not available. Other ports on multi-port

boards are assigned in numeric sequence after the first port installed. If you wish to change the board’s

initial COM Port number (e.g. from COM5: to COM3), please follow the procedure below. Additional

ports on the board will also be changed so that the COM port assignments are sequential.

1. Right click on My Computer.

TX+

RX+

CTS

CTS+

RTS

RTS+

GND

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

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Measurement-computing PCI-COM422/485 Manual de usuario Pagina 14