Omega Engineering OMG-COMM8-A appendix PAL Addressing, DIP-switch Illustration

Card Setup

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.

A12A6

ON

OFF

1 2 3 4 5 6 7

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.

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