Digital I/O Ports - Extron electronics DMP 128 User Manual

Digital i/o Ports
The DMP 128 provides twenty digital I/O ports that can trigger external events from
DMP 128 actions, or allow external events to trigger DMP 128 actions. DSP Configurator
provides pre-configured scripts with a fixed set of common trigger or 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 there are no scripts active, the digital I/O ports default to DI (digital input) and
inactive ('Logic Hi' ≈ +5 VDC). The DI detects a Logic Hi as +5 VDC and Logic Low
(active) as less than +1 VDC.
A DO (digital output) sends a Logic Lo as less than +1 VDC and a Logic Hi as +5 VDC.
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 DmP 128 File management system:
1.
2.
From the main menu, click Tools>Configure Digital I/O>Build Digital
I/O Configuration.
A dialog box opens with a list of pre-configured scripts.
Select a script from the Select a Digital I/O Configuration section. The
Event Description panel describes the script and how the digital I/O ports act
while the script is running. Highlight the desired script, then click OK.
A dialog box opens, verifying the file has successfully uploaded to the device.
notE: When performing this procedure in Emulate mode, the connection
dialog appears between step 3 and step 4. The DSP Configurator connects
and then disconnects during the procedure, returning to Emulate mode when
completed.
DMP 128 • Software Control 88