Troubleshooting With Indicators - Omron CS1W-ETN01 Operation Manuals

Troubleshooting with Indicators

10-1 Troubleshooting with Indicators

RUN ERC ERH
Not lit Not lit Not lit
Not lit Not lit Lit
Lit --- Lit
Not lit Lit Not lit
Lit Lit ---
Lit Flashing ---
170
The indicators on the Ethernet Unit can be used to troubleshoot some error. The
probable cause and correction for errors that can be determined from the RUN,
ERC, and ERH indicators are listed in the following table.
Probably cause
Power is not being supplied to the CPU
Unit or the power supply voltage is too
low.
The Ethernet Unit is faulty.
The CPU Unit or Backplane is faulty.
The mounting screws on the Ethernet Unit
are loose.
The unit number on the Ethernet Unit is
not set correctly on the rotary switch.
The I/O tables are not registered in the
CPU Unit.
The same unit number is being used on
another Unit as well.
The CPU Unit is faulty.
There is a mistake in the CPU Bus Unit
Setup or routing tables.
Memory in the CPU Unit is faulty.
The CPU Unit is faulty.
The node address is set outside the
correct range on the rotary switches.
The Ethernet Unit is faulty.
An error occurred in EEPROM.
The IP address is set incorrectly on the
rotary switches on the back of the Unit.
The node number set on the rotary switch
on the front of the Unit does not agree with
the host ID in the IP address. This
probably can occur when the address
conversion method is set for automatic
address generation.
Section
Correction
Supply power.
Make sure that the correct voltage is being
supplied.
Replace the Ethernet Unit.
Replace the CPU Unit or the Backplane.
Tighten the mounting screws to the
specified torque.
Correct the unit number setting.
Register the I/O tables.
Correct the unit number.
Restart the CPU Unit. If the problem
persists, replace the CPU Unit.
Read the error history and correct the data
that is causing the error. If the problem
persists, replace the CPU Unit.
Restart the CPU Unit. If the problem
persists, replace the CPU Unit.
Restart the CPU Unit. If the problem
persists, replace the CPU Unit.
Set the node number to between 01 and
7F Hex.
Restart the PC. If the problem persists,
replace the Ethernet Unit.
Restart the PC. If the problem persists,
replace the Ethernet Unit.
Correct the IP address. Do not set any of
the following IP addresses.
• Host IDs that are all 0 or all 1.
• Network IDs that are all 0 or all 1.
• Subnetwork IDs that are all 1.
• Addresses beginning with 127 (7F Hex).
Make sure that the node number and the
last byte of the IP address are the same
and set other host IDs to 0.
Change the address conversion method.
10-1