IP Control Unit Installation Guide V1.1
12
th
February 2008
Appendix A – Troubleshooting
A.1
I have connected my Control Unit but can’t see it in Site Manager
•
Check that the link light is lit, if not then check that the network cables are securely located at each
end. Try replacing the network cable.
•
If you are connecting directly, have you used a crossover cable or if connecting to a switch, have you
used a crossover cable when a normal patch cable is required.
•
Do you have multiple network adapters in your PC, try disabling all other network adapters so that
the one connected to the IP interface is the only one available.
A.2
The Control Unit has not picked up the correct IP address via DHCP
•
The DHCP request has failed, reset the power to the interface and try again.
•
Check with the network administrator as to whether or not the MAC address of the interface needs to
be registered with the DHCP server before it will assign it an address.
A.3
The ‘link’ light does not light when the network cable is inserted
•
Try using a different cable, there may be a broken wire in it.
•
Check the network port by plugging in a PC to make sure the network port works and is patched
through correctly.
•
Is the power light illuminated on the Control Unit? If it is not then try replacing the power supply.
A.4
Why is the ‘link’ light red sometimes?
•
The link light shows red during the interfaces initial setup whilst it is auto negotiating the connection
speed available to the network.
•
The link light’s colour signifies the connection speed, a 100Mbs full duplex connection will show as
green whilst a 10Mbs connection or a half duplex connection will show as red.
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