Siemens SINUMERIK 840D sl Series Diagnostics Manual page 74

Overview of Alarms
Or: Illegal operator intervention in an active tool selection (unloading of the tool to be
selected) has occurred. Therefore the PLC acknowledgement fails.
Reactions: - Interface signals are set.
- Alarm display.
Remedy: PLC programmer must note the following:
• Ensure that the tool is not removed from the specified magazine location (e.g. incorrect
PLC program).
• Do not remove the tool from the programmed tool change before the final acknowledge-
ment of the command (= unload).
!! It is however permissible to change the location of the tool to be loaded. The NCK can
deal with this situation.
This alarm supplements Alarm 6405, if it contains the identifier 8. Therefore, the diagnos-
tics should be easier.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
6450
Channel %1 block %2 tool change not possible. Invalid magazine location no. %3 in
buffer magazine
Parameters: %1 = Channel ID
%2 = Block number, label
%3 = Magazine location number
Definitions: The desired tool change is not possible. The specified magazine location is either tool-
holder/spindle or empty.
Only the numbers of the buffer that are not toolholder/spindle may be programmed with
the NC command TCI, i.e. the location number of a gripper is allowed.
Reactions: - Correction block is reorganized.
- Interface signals are set.
- Alarm display.
Remedy: • Check whether the magazine data ($TC_MPP1) have been defined correctly.
• Check whether the alarm-causing program command _ e.g. TCI _ has been pro-
grammed correctly.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
6451
Channel %1 block %2 tool change not possible. No buffer magazine defined.
Parameters: %1 = Channel ID
%2 = Block number, label
Definitions: The desired tool change is not possible. No buffer magazine defined.
Reactions: - Correction block is reorganized.
- Interface signals are set.
- Alarm display.
Remedy: Check whether the magazine data have been defined correctly.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
6452
Channel %1 block %2 tool change not possible. Tool holder/spindle number = %3
not defined.
Parameters: %1 = Channel ID
%2 = Block number, label
%3 = Tool holder/spindle number
Definitions: The desired tool change is not possible. The toolholder/spindle number has not been
defined.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005