Omron GRT1-PNT - DATASHEET 2 Operation Manual page 62

Unit functions
Replacing a Unit
3-2-5 I/O Communication error history monitor
Function Overview
50
When replacing a SmartSlice I/O Unit, leave just the base block connected
and replace the main block. I/O communication will continue with the other I/O
Units even while the problem Unit is being removed and replaced.
If DIP switches 1 and 3
are ON, data is automatically
restored to the replaced Unit.
1,2,3... 1 Turn OFF the I/O power supply of the I/O Unit being replaced.
2 In CX-ConfiguratorFDT right-click on the icon of the GRT1-PNT and select
Go Online.
3 Release the locks on the front of the I/O Unit that must be replaced and
remove the terminal block. The wiring can remain connected.
4 Remove the main block of the SmartSlice I/O Unit and replace it with a new
I/O Unit of the same type.
5 Mount the terminal block that was removed in step 2 and latch the locks
that were released.
6 Turn ON the I/O power supply.
Note 1 When a Unit withdraws from I/O communication during replacement, the
corresponding SmartSlice I/O Unit Communication Withdrawn Flag will go ON and
the PROFINET IO Communication Unit's TS indicator will flash red.
2 Before using the automatic restore function, the preparation for automatic
restoration (creating backup data and turning ON DIP switch 3) must be completed.
See section 3-2-3 Automatic restore function for details.
3 Always turn OFF the I/O Unit's I/O power supply before replacement in order to
prevent false output signals, false input signals, and electrical shocks. In addition, if
external power is supplied to the terminal block for a Unit such as a Relay Output
Unit, turn OFF that power supply before replacing the Unit.
4 Only replace one I/O Unit at a time.
5 Always replace the I/O Unit with the same model of I/O Unit. If a Unit is replaced
with a different model, there may be unexpected outputs and the restore operation
may not be completed properly.
6 If the base block is faulty or damaged, turn OFF the power supply and replace the
entire Unit. Even in this case, the I/O Unit's parameter data will be restored
automatically if the automatic restore function is enabled when the power is turned
ON.
The PROFINET IO Communication Unit can record the 64 most recent
internal
SmartSlice I/O Unit
errors occur, the oldest entry is deleted to make space for the newest error
entry. The communication error history can be read from the GRT1-PNT DTM
or via messaging services.
PROFINET
Communications
Unit
Power ON
errors in the Unit's error history. When more than 64
Section 3-2
To keep the system online, leave the
communications block connected.
#1
#2 #4
#3
Unit being
replaced