You can connect up to eight digital output signals to the DT7816 module. If you want to write a value to a specific digital output line, ensure that the corresponding pin of the Digital I/O header is not configured for another use (such as the output of the counter/timer) or you could corrupt the signal on the pin. Refer to the DT7816 User's Manual for more information on the digital output features.
The following figure shows how to connect a digital output (line 0,
in this case) to the Digital
I/O header on the DT7816 module; you can access these signals using
the Digital I/O connector of the STP781x
screw terminal panel: