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Digital I/O Ports
The DMP64 provides six digital I/O ports that can trigger external events from DMP64
actions, or allow external events to trigger DMP64 actions. The DSPConfigurator
software provides pre-configured scripts with a fixed set of common trigger and event
combinations. When selected, the script is compiled and placed onto the File
Management system of the device. For more advanced or custom scripts, contact an
Extron Electronics Applications Engineer.
When no scripts are active, the digital I/O ports default to DI (digital input) and inactive
(‘Logic Hi’
≈
+5VDC). The DI detects a Logic Hi as +5 VDC and LogicLow (active) as less
than +1 VDC.
A DO (digital output) sends a Logic Lo as less than +1 VDC and a Logic Hi as +5VDC.
For every script that involves a DO, two versions are available to provide either a Logic Hi
or a Logic Lo response to any action. The alternate script is designated as Reverse DO.
To build a script and place it into the DMP64 File Management system:
1. From the tools menu, click Configure Digital I/O>Build Digital I/O
Configuration.
2. This brings up a dialog that allows selection from a list of pre-configured scripts.
3. Select a script from the Select a Digital I/O Configuration section. The
eventdescription section describes the script and how the digital I/O ports act while
the script is running. Highlight the desired script, then click OK.
4. A dialog box appears, verifying the file has been successfully uploaded to the device.
NOTE: When performing this procedure in Emulate mode, the connection
dialog appears between step 3 and step 4. DSP Configurator connects and
then disconnects during the procedure, returning to Emulate mode when the
Digital I/O has been configured.
DMP64 • Software Control 75