
CommLink IV Technical Guide
16
Operator Interface
Troubleshooting the USB Drivers
Troubleshooting Tips
Problems with Prism Software
• Verify that the correct COM port, created by the USB
connection, is selected in the Job Site Window. Verify
COM port number in
<Control Panel>, <System>,
<Hardware>, <Device Managers>, <Ports>.
• If using Prism II, verify that CommLink 4 is selected
for Type of CommLink in the Job Sites Window.
• If using Prism, verify that the Baud Rate is set to 19200
in the Job Sites Window.
• Verify that the correct CommLink mode is selected
under Network Confi guration in the Job Sites Window.
• Verify that the USB switch on the back of the
CommLink is set to Normal.
Problems with USB Connection
• Verify that the RX-USB and TX-USB are blinking
when you perform a Search for Units or try to open a
status screen in Prism.
• If the USB LEDs fail to blink, disconnect and
reconnect the USB connection.
• If the problem persists, verify that the USB drivers
have been installed properly.
Problems Viewing Controllers on a Network
• Make sure that the CommLink communication dip
switch is set to Multi.
• Make sure that in Prism, the CommLink fi eld in the Job
Sites Window is set to zero for multiple loop.
• In Prism II, make sure that Multiple Loop
Confi guration is selected for Network Confi guration in
the Job Sites Window.
NOTE: WattMaster Controls Technical Support cannot trouble-
shoot internal PC and/or Windows-based operating
system problems.
NOTE: WattMaster Controls Technical Support cannot trouble-
shoot fi rewalls, routers and/or problems on a customer’s
internal or external network. An IT professional may need
to be consulted.
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