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Notes On The Use Of Third-party Modules - Siemens simatic ipc227e Operating Instructions Manual

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USB device not responding
"chkdsk" is not functioning

Notes on the use of third-party modules

Possible cause
The device
Redundant I/O addresses
crashes during
Redundant hardware interrupts
and/or DMA channels
Fluctuation of signal frequencies
or levels
Different pin assignment
Insufficient output of an external
power supply, e.g. UPS
The device does
A counter voltage is fed into the
not start up or
device by connected or installed
switches off im-
third-party components
Operating Instructions, 11/2016, A5E35782395-AB
Possible cause
The USB ports are not correctly
EWF (Enhanced Write Filter) has
been activated. The "chkdsk"
command is not supported if the
EWF has been activated.
A.3 Notes on the use of third-party modules
Possible remedy
Turn on USB Legacy Support for mouse and
For other devices, you need the USB device
drivers for the required operating system.
Deactivate the EWF or use an alternative method to
Possible remedy
Check your computer configuration:
If the computer configuration corresponds to the delivery
state, contact your technical support team.
If the configuration has changed, restore the factory state.
To do this, remove the third-party modules and restart the
device. If the error no longer occurs, the third-party module
being used was the cause of the fault. Replace the thrid-
party module with a Siemens module or contact the module
If the device still crashes, contact your technical support team.
Use a higher capacity power supply
Clarify the following with the supplier of the component:
The component can be operated without an external power
The component can be reconfigured so that it only uses the
external power supply or that of the device.
Technical support


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