B&B Electronics Parallel & Serial Port Checker PPC - Manual (Page 4)

Documentation Number PPC2095 Manual 3
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
RS-422/RS-530
The port checker uses the RS-232 software to check the RS-
422/530 ports. Some 422/530 ports support all RS-232 handshake
lines but many do not. Therefore, when checking 422/530 ports, you
should check the port after it is first installed and working properly.
You will then have a record of how your 422/530 port initially tested
in the file “ PORTCK.DAT “. Thereafter, if you suspect a problem
with your port, you can run the port check and compare these results
to the original results.
Special Note on B&B's RS-422/485 I/O Card, Model
422ICCR3: When using the port checker to check this IO
card, your port checker jumper should be set to RS-530.
When you run the port checker software you will get an RI
(Ring Indicator) failure.
The port checker is not designed to test RS-485 cards. If your
IO card is set up for RS-485 you will get multiple failures.
If you have an RS-232 to RS-422 converter and are using the
port checker to test the output of the converter, you should be using
the RS-422 portion of the port checker. However, it is important to
note that, depending on how the handshake lines are handled, you
might get handshake line failures. If the RS-232 to RS-422
converter is working properly, or if you are checking a standard RS-
422 port, you should not get a TXD or RXD failure. If they are
working that test should pass.
Exiting the Test
After each test is performed, the software will ask if another test
is to be performed or if you want to exit the port checker program.
IMPORTANT: After exiting the port checker software program you
should do a hardware reboot. The port checker software may have
altered your system configuration registers that are reconfigured on
each hardware reboot.