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RIO-47100 User Manual Download Page 47](http://html1.mh-extra.com/html/galil-motion-control/rio-47-series-rio-47100/rio-47-series-rio-47100_user-manual_558776047.webp)
Input Current Limitations
The current for an optoisolated input shall not exceed 11mA. Some applications may require
the use of an external resistor (R) to limit the amount of current for an input. These external
resistors can be placed in series between the inputs and their power supply (Vs). To
determine if an additional resistor (R) is required, follow Equation 3.4 below for guidance.
Chapter 4 I/O ▫ 47 RIO-47xxx Rev 1.0r
Figure 4.11: Digital Input wiring for Bank 0, DI[7:0]
Figure 4.12: Digital Input wiring for Bank 1, DI[15:8]
Figure 4.13: Digital Input wiring for Bank 2, or DI[23-16]