Instruction manual

Appendix F – Program Run Disable Mode
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Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers
Appendix F – Program Run Disable Mode
The information in this appendix is not applicable under normal operating conditions.
This appendix provides instructions for removing an Enova DGX CPU board and setting the
Configuration DIP switch to place the integrated Master in Program Run Disable (PRD) mode.
The CPU board must be removed from the enclosure to access the DIP switch, which is mounted on the
right side of the board. The procedure can be done while the enclosure is in a rack, but the system must
be powered down.
Program Run Disable (PRD) Mode
The PRD mode prevents the NetLinx program stored in the integrated Master from running during the
Enova DGX enclosure’s power-up.
Important: The PRD mode should only be used if the resident NetLinx program is causing
inadvertent communication and/or control problems.
If the procedure is necessary, use NetLinx Studio v 3.x to resolve the communication and/or control
problems with the resident NetLinx program.
Configuration DIP Switch Mode Settings
The Configuration DIP switch is used to set the integrated Master to PRD mode according to the settings
listed in the table below.
Note: Think of the PRD mode (ON) equating to a PC’s SAFE mode setting. PRD mode allows you to
power a unit, update the firmware, and download a new program while circumventing any problems
with a currently downloaded program. Power must
be cycled to the enclosure after activating/
deactivating this mode on the Configuration DIP switch Position #1.
PRD Mode Settings
Mode Position 1
Normal Mode (default) OFF
PRD Mode ON
PRD Mode
Important: The DIP switch is
mounted with the ON position
at the bottom.
Normal Mode
- Need resolution to bug DGXMHW-304