Echelon IP-852 Channel - Manual (Page 54)

46 Appendix A: Troubleshooting
Common Troubleshooting Problems
The following lists the most common problems encountered when creating and
configuring an IP-852 channel with the Echelon IP-852 Configuration Server.
Disabled IP-852 devices will not configure properly when the IP-852
Configuration Server is taken off the network. If you reattached the IP-852
Configuration Server and select Update Members, the IP-852 device is still not
configured properly.
• To solve this problem, you must disable your IP-852 device while the IP-852
Configuration Server is still attached to your network.
The device icons in the IP-852 Configuration Server do not turn green.
• This is usually an indication that the IP-852 Configuration Server cannot
communicate with the device. If any of your IP-852 devices are behind a NAT
gateway, verify that the NAT gateway is properly setup to forward ports 1628
and 1629.
I cannot view an IP-852 device’s Setup Web page.
• Many IP-852 devices have a built-in Web server used for setup that
communicates on port 80 by default. To access the Web page from outside your
NAT gateway, be sure that the NAT gateway is configured to forward port 80 to
your IP-852 device.
Computers using DHCP cannot communicate with an IP-852 device using
Ethernet direct connect.
• Communication with an IP-852 device may be lost if you use DHCP and direct
connect (using an Ethernet cable), and then unplug the IP-852 device. When you
plug the Ethernet cable back into the IP-852 device, the device communicates
with the DHCP server and searches for an IP address. This action may cause the
device’s IP address to change. To solve this problem, assign your IP-852 device a
static IP address and make any configuration changes. Enable DHCP before
re-installing the IP-852 device onto your network.
I cannot access an IP-852 device with FTP.
• Many IP-852 devices have a built-in FTP server that communicates on port 21 by
default. To access the FTP server on an IP-852 device that is outside your NAT
gateway, be sure that the NAT gateway is configured to forward port 21 to the
IP-852 device.
The Service LED on my IP-852 device is blinking, what does this mean?
• Many IP-852 devices have a Service LED that blinks when the IP-852 device is
not commissioned. When is the device is added to a network and commissioned,
the Service LED will turn off.
How do I diagnose problems with the IP-852 Configuration Server?