B&B Electronics 3PCIU4 User Manual
Page 74
Troubleshooting MIport Cards
68 Chapter
9
Manual Documentation Number 3PCIoUx-1008
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Your MIport card should be fully functional when you receive it from the
factory. Operational problems encountered on first use will typically be the
result of incorrect connections or operation. The following procedure will
assist you in locating the source of you problems.
Starting Up
If you have any trouble starting your system after installing the card, the card
may not be properly seated in the slot. Power down the computer, remove
and re-insert it, or try a different slot. Ensure your system is set for PnP OS.
(Windows NT and Linux should be set to non-PnP.)
Checking Connections
RS-232/422/485 Operation
1. Ensure that you have set up your card for the correct mode of
operation (RS-232, RS-422, RS-485 2-wire or 4-wire) using the DIP
switches on the card and Advanced Port Settings.
Note: For more information on DIP switches refer to Chapter 2. For
more information on Driver Settings refer to Chapter 5.
2. Ensure your communications parameters (baud rate, parity, stop
bits) are set correctly at both ends of your link.
RS-232 Operation
1. MIport cards are DTE devices. If you are connected to a DCE
device use a straight through cable. If you are connected to another
DTE device, use a crossover, or null cable.
2. If hardware handshaking is required, ensure you have the right
cables and that both ends of your link are configured the same for
handshaking.