6-3
If your board is not operating properly after using the information in
Table 6-1, continue with the next two sections to further isolate the
problem.
Data appears to be
invalid
The most common cause of this
problem is that the I/O bus speed
is in excess of 8 MHz.
Reduce I/O bus speed to a maximum of
8 MHz (to change the I/O bus speed, run
BIOS setup). See the documentation for
your computer for instructions on
running BIOS setup.
An open connection exists.
Check wiring to screw terminal.
Another system resource is using
the specified base address.
Reconfigure the base address of the
PIO-32 Series board; refer to page 3-8
for more information. Check the I/O
assignments of other system resources
and reconfigure, if necessary.
Polarity of input current reversed. Check wiring for proper use of positive
and negative connections.
Outputs not indicating proper
level.
Check that the circuit is complete (are
both relay connections used?).
You may need to apply pull-up resistors
for the external source
Computer does not
boot.
Board not seated properly.
Check that the board is properly
installed.
The base address setting of the
PIO-32 board conflicts with that
of another system resource.
Verify that the base address settings of
your system resources are unique.
The power supply of the host
computer is too small to handle
all the system resources.
Check the needs of all system resources
and obtain a larger power supply.
Table 6-1. Troubleshooting Information (cont.)
Symptom
Possible Cause
Possible Solution
