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Card Setup
Omega Engineering OMG-COMM8-A Page 4
The following illustration shows the correlation between the DIP-switch
setting and the address bits used to determine the base address. In the
example below, address 280 (Factory Default) is selected as a base.
ON
OFF
1 2 3 4 5 6 7
A12 A6
Figure 2 - DIP-switch Illustration
Note: Setting the switch “On” or “Closed” corresponds to a “0” in the
address, while leaving it “Off” or “Open” corresponds to a “1”.
Refer to Appendix A for common address contentions.
“PAL” Addressing
If header E11 is set to the “PAL” position, the board can be addressed at
many customized locations. Using the “PAL” option will allow you to
obtain COM1: - COM4: addresses, XENIX COM: addresses, or any other
standard or nonstandard address configuration. Using the “PAL” feature is
a very cost-effective means of solving complex addressing problems. For
more information on implementing the “PAL” option, please contact
Omega Engineering Technical Support.