User’s Manual Page 4
8.0 CONFIGURATION JUMPERS
8.1 Using the COM configuration jumper
There is a jumper that allows you to select +5VDC or GND for the COM pins.
1-2: COM= GND 2-3: COM= +5VDC
8.2 Using the Pins 2-9 direction jumper
There is a jumper to select the pins 2-9 direction.
1-2: OUTPUTS 2-3: INPUTS