Walchem WebMaster Quick Start Manual page 73

4. If waiting 3 minutes and plugging the USB cable back in doesn't work, re-boot both
computer and controller.
5. If this doesn't work, read the tips below:
Scenario
Connect cable and get New Hardware
Found Wizard
Connection worked normally, but after
removing cable and plugging it back in
after a minute, can't reconnect.
Get "this device can work faster"
message but No 'Local Area Connection
2' appears.
Get "this device can work faster"
message when cable is connected.
Local Area Connection 2 says it's
connected but time is stuck at 0:00.
Local Area Connection 2 does not
disappear when cable is disconnected
No "this device can work faster" message
when cable is connected,
No Local Area Connection 2
Get "this device can work faster"
message when cable is connected, but
No Local Area Connection 2
Get "this device can work faster"
message when cable is connected, get
Local Area Connection 2, but it can't be
enabled
Get "this device can work faster"
message, Local Area Connection 2
appears, but when 199.199.199.2 is
entered in the browser you get "The page
cannot be displayed"
P/N 180273 Rev. N April 2017
Quick Start Guide Section 8:
TROUBLESHOOTING THE USB CONNECTION
Driver not installed
Driver installed on another USB port
Driver in PC has not reset
Driver in PC has crashed. Can happen
when Controller Restart button is clicked
with USB cable connected.
Driver in PC is corrupt
Faulty core interface board
Foam grommet shorting to CI board (WM1
only)
Faulty USB cable
Noisy DC power supply in controller
PC does not recognize all USB 1.0
devices
Driver installed improperly
Faulty USB cable
Noise coupling in on SI, AI, DI
Local Area Connection 2 not set to use
fixed IP address
Cause
73
Corrective Action
Install driver
Move cable to the other port
Unplug cable and wait for 5 minutes, or
reboot PC
Reboot PC. May require a hard reboot if a
blue screen appears on restart attempt.
Uninstall and reinstall the driver
Replace CI board
Put tape between grommet and CI board, or
remove grommet
Replace USB cable
Install two p/n 103608 ferrite clamps on the
DC output cable of the power supply
Install a 2.0 USB hub between PC and cable
Uninstall and reinstall driver
Replace USB cable
Properly shield all I/O cables. Ensure proper
earth ground connection to controller.
Enter 'Local Area Connection 2' properties
and enter fixed IP address of 199.199.199.1
as described in Quick Start Guide