21 Multi-I/O module XN-322-16MIO-DIOAI21.3 Wiring for digital and analog inputs and outputs143 XN300 slice modules 02/24 MN050002EN Eaton.com21.3 Wiring for digital and analog inputs and outputsDigital inputs can be wired to connector X2 and X5 and digital outputs can bewired to connector X3 and X4.The digital input, as defined in the EN 61131-2 type 1 with a 0.5 ms inputdelay, is particularly suitable for connecting electronic switching devices,sensors and switches, etc. It is used to convert a signal with two possiblestates into a one-bit binary value.The eight short-circuit proof digital outputs are provided on connectors X3and X4 with +24 V/0.5 A.On connector X1 the U+ and U- signals of the analog input can be wired to ananalog output signal. A differential measurement will be carried out withoutconnecting either input cable to ground (GND). The signal being measuredmust fall within the input's permissible common mode range. Please refer to→ Table 7, page 144.An additional I+/I- analog input can be wired on connector X1. A measuringrange of 4–20 mA with open wire monitoring is supported, as is a measuringrange of 0–20 mA without open wire monitoring.The current input channel uses a differential voltage measurement at aninternal module resistor with a resistance of 50 Ω.It must be ensured that the input signal's voltage level falls within thepermissible common mode range.Please refer to → Table 8, page 145.Figure 86: Wiring of inputs and outputsX4 X5(X3/X4)I5 I6 24V 0VO5 O7O6 O8F1X3 O1 O3O2 O4X1 U+ U- I+ I- I1 I2 I3 I4PE24 V0 VX2U -++-