X4 USB(e)

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HMIs, human machine interfacesET-208Electrical Installation ET-208Connection toX4 USB(e)


The X4 terminals of the HMI provide a USB(Ex-e) interface. Depending on how you assign the interface the device will emulate a host interface or a device interface.


The software drivers for these functions are not implemented at present.


USB Host:


!! Terminal 5 must not be connected here !!


For operation as operator interface in hazardous and safe areas.


USB Device:


!! For exclusive operation in safe areas !!


This connection is for service and product updating purposes.



If the ET-208 is used as USB Device, it must be powered by the X1 interface.



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