Toshiba T2N - Manual (Page 102)

6.Troubleshooting
User
’s manual
87
Error Message and Associated Information CPU LED Display
Classification
Error Message Information 1 Information 2 Information 3.
Related Special
Relays
RUN FLT
Meaning of Error and Countermeasures
I/O bus error Unit No. Data S0005
S0020 A fault has been detected by an I/O bus
check.
Remove all the I/O modules and switch ON
the power supply again. When an error is
generated even so, replace in the sequence
rack CPU.
When the error is restored by switching ON
the power supply again, switch the power
supply OFF and insert I/O modules one by
one, switching the power supply ON each
time. Replace the I/O module which
generated the error.
I/O mismatch Unit No. -Slot No. Register S0005
S0021 The input/output allocation information and
the mounted state of the I/Os differ. Set the
input/output allocation correctly.
I/O no answer Unit No. -Slot No. Register S0005
S0022 An I/O module has not been mounted in a
slot allocated to I/O.
Mount an I/O, or start up in the RUN-F
(forced operation) mode.
I/O parity error Unit No. -Slot No. Register No. S0005
S0023 A parity error has been detected when data
is transferred to an I/O module.
Check if the I/O modules are installed
properly.
Duplicate I/O reg Unit No. -Slot No. Register S0005
S0021 A duplication has been detected in the
allocation of I/O modules to the input/output
register.
Re-set so that the unit first register
assignment is not duplicated.
I/O
Illegal I/O reg Unit No. -Slot No. Register S0005
S0021 The allocation of I/O modules to the
input/output register has exceeded 128W.
Reduce the I/O module allocation.