Connecting to an External Device
GPI Connection ([GPI] Connectors)
DME64N/DME24N Owner’s Manual 33
GPI Connection ([GPI] Connectors)GPI (General Purpose Interface) device (GPI controller, etc.) can be connected to the rear-panel [GPI]
connectors. Using GPI a variety of control signals can be transferred between the DME64N/24N and
external controllers or other devices. The optional CP4SW, CP4SF, and CP1SF control panels are also
connected via GPI.
The DME64N provides 16 channels of GPI input and output, and the DME24N provides 8 channels. Each
channel has an IN terminal, a +V terminal, an OUT terminal and a GND terminal. The +V terminals have an
open-terminal voltage of 5 volts. The IN terminals can detect a full range of input voltages from 0V through
5V, while the OUT terminals output either signal “L” or “H” at a TTL level.
The parameters for each GPI input and output are assigned via the DME Designer application.
Euroblock connectors are used for all GPI input and output connections. Euroblock connection methods
are described in “Euroblock Connection” on page 26 in this manual.
NOTE
For more information on the CP4SW, CP4SF, and CP1SF control panels refer to “CP4SW, CP4SF, and CP1SF”
in the Appendix of this manual (page 51).
NOTE
The DME Designer can be used to set up the system so that scene recall operations and user parameter
control can be carried out from connected GPI control devices. Refer to the DME Designer manual for details.
NOTE
GPI connector calibration procedure is described on page 51 of this manual, in the Utility display GPI page.
IN +V IN +V GND OUT GND
Example: Controlling the
DME64N/24N from a switch.
GPI Connection
Example: Controlling the
DME64N/24N via a 10k ohm
linear taper potentiometer.
GPI Connection
Continuous
potentiometer
GPI Connection
Example: Lighting external
LED indicators from the
DME64N/24N.
Max. 16mA
Make sure that the current
between the OUT and GND [GPI]
connectors is less than 16mA.
CAUTION