2-2 Connecting Online to the Relay PLC
2-2-3 CPU Unit Troubleshooting
Online Connection
Click the
Online Connection Icon or select Network
−
Work Online from the
menu bar to go online. The
Online Icon will be displayed in the Online
Connection Information Window. The following will appear in the status bar at the
same time:
2-2-3 CPU Unit Troubleshooting
Right-click the desired target PLC in the Online Connection Information Window and
select Error Log. Refer to 2-4 Switching the Target PLC for details.
The PLC Errors Dialog Box will be displayed. Check the errors that have occurred in
the CPU Unit and perform any required error processing.
For example, the PLC Errors Window above will be displayed when an I/O Table
Setting Error has occurred in a CJ-series PLC. In this case, the registered I/O table
does not match the actual I/O table. There are three ways to correct this error: change
the actual Units in the PLC, create a new I/O table, or edit and transfer the I/O table.
2-20
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