5.3 Terminal block contacts assignments Screw terminals are located on the back wall (panel-mounting) or inside the device (wall-mounting). The terminal block contacts assignment is shown in Figure 5.1 . 5.4 Connection of switching devices and sensors Figure 5.1 – Terminal block contacts assignments CAUTION Do not apply voltage to the device inputs (pins 9 – 12 of the terminal block) that is outside the range from 0 to 24 V. 21