Selecting a Comm Port

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Selecting a Comm Port

The "Setup Comm Port" section of the LOR Control tab of the Light-O-Rama Hardware Utility is used to set which RS-232 comm port the Hardware Utility will use for Light-O-Rama controllers.  



The Setup Comm Port section


While the Sequencer and Show Player can use up to four different comm ports simultaneously for Light-O-Rama controllers, the Hardware Utility only uses one at a time.  By default, it will be set to use the port you have configured to be your "Regular" port (if you have done so); see "Network Preferences" in the Sequencer for details on how to set your Light-O-Rama ports.


Only comm ports 1 through 16 are supported in the Hardware Utility.


If you know the comm port that it should be using, you can simply select it from the "Manual Select" dropdown box.  If you select a port other than your "Regular" port, the Hardware Utility will offer to automatically change your "Regular" port to be the one that you selected.


If you do not know the comm port to be used, you can ask the Hardware Utility can automatically detect it:


Connect a Light-O-Rama controller to your PC, for example using an SC485 connector or a USB-RS485 adapter.

Connect the controller to AC power, and turn it on.

Click on the "Auto Configure" button.


The Hardware Utility should then automatically detect the comm port that you have hooked the controller up to.  If it does not:


Check the physical connection (such as cables and the SC485 connector).

Check that the controller's power is on.

Ensure that switches or jumpers on the controller are correct.

Ensure that the correct type of cable is used.

Retry the "Auto Configure" button.


If all of the above fails to find the port, then watch the controller's blinking LED light while manually selecting different comm ports from the list.  Once a comm port is selected, wait about five seconds.  If the LED stops blinking, then that is the correct port.  If it does not stop blinking, try the next comm port in the list.


If this still does not determine the correct comm port, there may be a problem with the connector or the controller.


If "Auto Configure" does not work, but you were able to determine the comm port by manual selection, there may be a problem with the connector.  Or, if your computer is an older PC or laptop, there may be a compatibility issue with the computer's communications drivers.


In any case, if you can get the unit's LED to stop blinking, then that controller will most likely work on your PC.