Chapter 9 Troubleshooting and Technical Support
ET-7000 AIO User Manual, Apr. 2009, V1.04, EMH-011-104----------110
9. Troubleshooting and Technical Support
This chapter discusses methods of quickly diagnosing and fixing problems or errors
without having to contact ICPDAS.
When troubleshooting the following problems, please make sure that the module is
switched on, and confirm that the physical connections are correct (power cable, network
cable and serial cable)
Note that some unexplained errors might be caused by duplicate IP addresses on the
Network. Make sure that the IP address of your module is unique.
Table 9-1 Troubleshooting
Symptom/Problem Possible cause Solution
The RUN LED doesn’t light Internal power has failed Return the module for
repair.
The RUN LED indicator is
ON (light), but not flashing.
The module has possibly
crashed.
Reboot the module
The IP/Mask/Gateway
address isn’t within the IP
address range of the LAN.
Change the
IP/Mask/Gateway address
to match the LAN, or ask
the MIS administrator for
assistance.
The IP address has
restricted by the IP filter
settings
Check the IP filter setting
using the Web
configuration.
Cannot communicate via
the Ethernet port, but the
ET-7000 is still operating.
There are more than 30
TCP/IP connections.
Reboot the module.
Able to explore the web
page through port 80 using
a web browser, but the Web
HMI and Modbus/TCP
program cannot access the
module through port 502.
Port 502 has been restricted
by the firewall.
Consult your MIS
administrator for assistance.
The Web HMI and
Modbus/TCP program can
The Port 502 has restricted
by the firewall.
Consult your MIS
administrator for assistance.
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