AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 202)

Page 202 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
In the example above, GPIO5 is defined as the internal logging activation switch input. The
Gnd=On criteria is set meaning the switch input will be considered on when the switch
completes continuity to ground as shown in the diagram above.
The analog status of all GPIO pins can be monitored by viewing/logging the GPIOX AN channel
as shown below:
Logging Off
Switch High
Logging On
Switch Low (GND)