GPIO pins

This section applies only to embedded products. All Digi Connect Family embedded devices have several General Purpose IO (GPIO) pins. In normal operation, GPIO pins are used for the serial signals CTS, DCD, DSR, DTR, and RTS. On Digi Connect EM and Wi-EM, both sets of RXD/TXD signals are also configured. You can use these GPIO pins for either standard serial communication signaling or a user-defined purpose, such as when a significant event occurs in the device. In the latter case, you can configure the Digi device so that when an event occurs, an alarm is sent as an email message to an administrator or technician, or as an SNMP trap. The number of GPIO pins varies by device. Digi Connect ME and Wi-ME devices have five GPIO pins, while Digi Connect EM and Wi-EM devices have nine GPIO pins. You can view the configuration and current state of GPIO pins through the web interface or by issuing commands from the command line.