Troubleshooting With Indicators - Omron CJ1W-ETN11 Operation Manual

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 ---
192
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 (CS Series) or the sliders are not
properly locked into place (CJ Series).
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. (CS
Series only)
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 gener-
ation. (CS Series only)
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 speci-
fied torque (CS Series) or lock the sliders
into place (CJ Series).
Correct the unit number setting.
Register the I/O tables.
Correct the unit number.
Restart the CPU Unit. If the problem per-
sists, replace the CPU Unit.
Read the error history and correct the data
that is causing the error. If the problem per-
sists, replace the CPU Unit.
Restart the CPU Unit. If the problem per-
sists, replace the CPU Unit.
Restart the CPU Unit. If the problem per-
sists, 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.
Section 10-1