B&B Electronics 3PXCC2a Manuel d'utilisateur télécharger pdf (Page 5)

2-WIRE RS-485 TESTING

USING LOOPBACK OR WITHOUT LOOPBACK

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CONNECTIONS - Models Without Echo Jumper

USING COMTEST TO CHECK OPERATION - models with echo jumper

1. Make the Test Connections for Loopback and the required setting to Enable RX or Echo.

2. Start ComTest from your Programs menu under B&B Electronics.

3. Select the Com port number you want to check. ComTest will only show Windows based

Com ports that are not in use. If another program is using the port, it will not be available.

Please close down any other programs that may be accessing the port. If another program is

using the same IRQ number that port is using, you will not be able to use both ports at once

unless both devices are PCI or USB based.

4. Accept the default baud rate, data bits, parity, stop bits.

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B&B Electronics 3PXCC2a Manuel d'utilisateur Page 5