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8.5 Troubleshooting
1. If the Ethernet Port fails to come up normally (i.e., does not reach standby state.)
If the Ethernet Port is functional, then the Ethernet Port can be initialized and brought to the
standby state (with the ERUN LED lit) by applying power or by issuing a reset request.
2. If the Ethernet Port fails during operation
Recovery
procedure
Replace the PU235N/245N.
Before replacing the PU235N/245N, read out the down information, and then send both that information
and the PU235N/245N to Toshiba.
3. If a SEND or RECV instruction fails complete
Recovery
procedure
(1) Verify that the inputs of function block are held in the on state until the instruction completes.
(2) Determine whether the user program is writing to the status register while the instruction is executing.
START
Apply the rated line voltage to the primary side of
the power supply module.
No
Is power supplied to the T2N power
supply module?
Yes
Insert the PU235N/245N into its slot correctly.
No
Is the T2N correctly mounted in the
base unit?
Yes
Replace the PU235N/245N.
Read out the down information, and send both
that information and the PU235N/245N to
Toshiba.