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Appendix E — Troubleshooting
Problem: No Data Output.
When the trigger is pulled, the unit beeps and then triple-beeps, but does not output data.
Error Messages (String Output): None.
Possible Cause: SIMATIC MV340 is not connected (USB or Serial) to the PC.
Solution:
1. Check to make sure the PC supports "High Power Devices" (self-powered hubs, some
laptops, etc.). Right-click on My Computer in the Windows Start menu, select Properties,
click the Device Manager button on the Hardware tab, expand the Universal Serial
Bus controllers menu item, right-click on USB Root Hub, select Properties, and
then select the Power tab.
2. Make sure the PC is not allowed to power down the device. Follow the same path
described above, but select the Power Management tab instead of the Power tab.
SIMATIC MV340 User's Manual
Appendices
Uncheck the Allow the
computer to turn off this
device to save power
box if it is checked.
A-9
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