Omron GRT1-PNT - DATASHEET 2 Operation Manual page 85

Troubleshooting using the LED indicators
RUN ERR
Not Lit Not Lit
Flashing
Lit
Lit Not Lit
Lit
4-2-3 SmartSlice I/O system errors
Communication Unit
TS Colour
Not Lit ---
Flashing Green
(1 Hz)
Red
The table below indicates the states which can occur during startup and
operation of the Unit.
/i
Probable cause
Unit is initializing
Unit has encountered a fatal system error
during initialization and is unable to continue.
The Unit has been initialised, but encoun-
tered fatal error during Operation.
The Unit is Operational. No errors encountered.
Not a valid combination.
If power supply to the Unit is correct and the Unit has initialized correctly,
problems in the SmartSlice I/O system can be determined using the TS LED
indicators on the PROFINET IO Communication Unit as well on the individual
SmartSlice I/O Units. When lit or flashing, the TS LED indicator can be either
Green or Red.
The tables below lists the TS LED indicator options.
/i
Probable cause
Power is not being supplied to the Unit.
Joining SmartSlice I/O Units to network.
There is a possible break in the connection
between individual SmartSlice I/O Units, or one
of the SmartSlice sockets has not been
connected properly to its left neighboring
connector.
The TS LED Indicator on all correctly connected
slices are flashing, whereas the TS LED
Indicators on the non-correct Units are Not Lit
(OFF).
The End Unit is not (properly) attached.
SmartSlice Communication does not start up.
The TS LED Indicator on all SmartSlice I/O Units
slices are flashing.
SmartSlice bus communication error occurred.
When the registration table function is enabled,
the actual configuration does not match the
registered configuration.
The total number of I/O points in the SmartSlice
I/O Systems exceeds the maximum.
Correction
--
Replace the Unit.
Restart the Unit. If the problem persists,
replace the Unit.
Correction
Refer to section 4-2-1.
Wait until the SmartSlice I/O Units have
been added to the network.
Check the connection between SmartSlice
I/O Units at the point where the first Unit is
located with its TS LED Indicator OFF.
Ensure that all SmartSlice I/O Units are
connected correctly to each other.
Check the End Unit connection and ensure
that it is correctly connected to the
SmartSlice system.
Check whether the SmartSlice I/O System's
base block is connected properly.
Correct the configuration and turn the
power ON again.
Correct the Unit configuration and number
of I/O points and turn the power ON again.
Section 4-2
73