July 2010 28 – 531
28.2 Exchange of the MC 422
Preparing the
machine
If still possible:
8 Move machine to home position (axes, tool changer, tilting head, etc.).
Ask the machine operator!
8 Press EMERGENCY STOP.
Backup of
non-volatile PLC
markers and words
8 Back up the condition of non-volatile PLC markers and words from RAM to the hard disk. -->
See “Non-Volatile PLC Markers and Words” on page 11 – 136.
Data backup
8 Establish a connection between your laptop and the control.
--> See “Connection Setup” on page 13 – 172.
8 Back up all control data from the hard disk.
Select the icon Scan everything. --> See “Backup on an External Data Medium” on page 13
– 192.
Removing the
Defective MC 422
8 Switch off the machine, take precautions against resetting, ensure that the equipment is free
of potential.
8 Label and remove all of the connections on the MC.
8 Loosen two torx screws at the top and two at the bottom of the housing (do not screw off
completely).
8 Remove the defective MC by drawing it towards you by the handles until the MC disengages
from the CC. Now you can pull out the MC at a slight angle to the right.
The MC 422 may only be exchanged in consultation with the machine manufacturer
or by the machine manufacturer!
MCs received for exchange and new MCs are normally equipped with the most recent
NC software.
This NC software must be released by the machine manufacturer!
If the latest NC software has not been released by the machine manufacturer or if the
NC software version of your defective control should also run on the replacement control,
it must be loaded. For this purpose you also require support from the machine manufacturer.
Note: Dual-processor MCs have already loaded Windows.
If an external archive for the TNC data is already available, you need not to back up the TNC
partition. Thus you save time!
Contact the customer!
In this case, select the icon Scan system and machine files.
If you cannot back up data on the defective MC 422 anymore, you must go back to available
archives (PLC data, TNC data) to back up the data on the new control.
If required, you may obtain the machine data also from the machine manufacturer.
Observe the ESD precautions. --> See “Important Information” on page 28 – 523!
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