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Documentation Number 3PCIOSD1x-3903m Manual Chapter 4 33
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph 353-91-792444 – Fax 353-91-792445
Chapter 4: TROUBLESHOOTING
If you have any trouble starting your system after installing the
card, the card may not be properly seated in the slot. Remove and
re-insert it or try a different slot.
If you are unable to communicate with the card using your software
and hardware devices:
1. Check your pinouts. In RS-422 or RS-485 mode the "A" lines
should match your "A" or "-" lines. "B" lines should match your
"B" or "+" lines. Note: RS-422/485 pinouts are non-standard.
2. Use the COMTest program provided on the PCI/USB COM
Port Utility Disk with a loop back to check the card. Run
setup.exe to install COMTest on your program menu under
B&B Electronics. A Loopback connection for RS-232 connects
the Transmit output to the Receive input. (pins #2 & #3 on the
DB25 connector) For RS-422 or 4-wire RS-485, connect the
TD(A) to RD(A) and the TD(B) to RD(B). Then use the
COMTest program to send characters, and observe the
characters being received. To check 2-wire RS-485, you will
need to enable the receiver by moving the receive jumper to
422 mode, or use one Port to transmit to another by cross
connecting and loading COMTest twice, one copy for each
port. Characters typed in one copy of COMTest will appear in
the receive window of the other. Note that software must
ignore the RS-232 handshaking lines in RS-422/RS485 mode,
the input lines (CTS, DSR, DCD, RI) are not pulled high.
3. Try another software package for troubleshooting.
4. Check our website for available FAQ's or troubleshooting
hints.
5. Call B&B Electronics Technical Support for troubleshooting
assistance.
USA Office
Technicians are available at (815) 433-5100 to answer your
questions from 8 AM - 5 PM weekdays (Central Time).
European Office
Technicians are available at + 353 91-792444 to answer your
questions from 8:30 AM – 5 PM weekdays (GMT Time).
34 Chapter 4 Documentation Number 3PCIOSD1x-3903m Manual
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445