How To Return The Qj71Pb92V To Its Factory-Set Conditions - Mitsubishi Electric Melsec Q Series User Manual

9
TROUBLESHOOTING

9.6 How to Return the QJ71PB92V to Its Factory-set Conditions

This section explains how to return the QJ71PB92V to its factory-set condition.
This procedure initializes the flash ROM of the QJ71PB92V.
Perform the following procedure, for example, when parameters in the flash ROM are
corrupted (The PRM SET LED is flashing).
(1) Stop the QCPU
(2) Connect the GX Works2 to the QCPU, and perform the following steps
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- 28 9.6 How to Return the QJ71PB92V to Its Factory-set Conditions
(a) to (k) by changing current value on the GX Works2
(a) Write 9 to the Operation mode change request area (Un\G2255) of the
H
QJ71PB92V.
(b) Turn ON the Operation mode change request signal (Y11).
(c) When the Operation mode change completed signal (X11) has turned ON, turn
OFF the Operation mode change request signal (Y11).
(d) Write F to the Operation mode change request area (Un\G2255) of the
H
QJ71PB92V.
(e) Turn ON the Operation mode change request signal (Y11).
(f) When the Operation mode change completed signal (X11) has turned ON, turn
OFF the Operation mode change request signal (Y11).
(g) Write A to the Operation mode change request area (Un\G2255) of the
H
QJ71PB92V.
(h) Turn ON the Operation mode change request signal (Y11).
(i) When the Operation mode change completed signal (X11) has turned ON, turn
OFF the Operation mode change request signal (Y11).
(j) The TEST LED turns ON, and the processing for returning the QJ71PB92V to its
factory-set conditions is started.
(k) When the processing is completed, the following status will be identified.
• When normally completed: The TEST LED turns OFF.
• When failed: The TEST and FAULT LEDs are ON.
When the processing has failed, please consult your local Mitsubishi
representative.
POINT
If the redundant CPU is in the Backup mode, the operation mode of the
QJ71PB92V cannot be changed.
An error code is stored in the Operation mode change result area (Un\G2256).
( Section 9.5.2)
The operation mode of the QJ71PB92V must be changed when the redundant
CPU is in Separate or Debug mode. (
system for the CPU module used)
User's manual for the redundant