Siemens SINUMERIK 840D Series Diagnostics Manual page 70

1 Alarms
6442
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
6450
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
6451
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
1-70
Channel %1 function not executable. No tool assigned to desired magazine/maga-
zine location %2.
%1 = Channel ID
%2 = Magazine/magazine location no.
PLC logic is presumably incorrect. Tool change with reject tool is configured. Preparatory
command is pending. Selected tool is (e.g. from PLC) unloaded from its location. PLC
acknowledges preparatory command with 'Repeat tool selection' (e.g. status =7). NCK
cannot find the tool at the magazine location specified in the PLC command.
Or: Illegal operator intervention in an active tool selection (unloading of the tool to be
selected) has occurred. Therefore the PLC acknowledgement fails.
- Alarm display.
- Interface signals are set.
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 diagnosis
should be easier.
Clear alarm with the Delete key or NC START.
Channel %1 tool change not possible. Invalid magazine location no. %2 in buffer
magazine
%1 = Channel ID
%2 = Magazine location number
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.
- Alarm display.
- Interface signals are set.
- Correction block is reorganized.
• 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.
Clear alarm with NC START or RESET key and continue the program.
Channel %1 tool change not possible. No buffer magazine defined.
%1 = Channel ID
The desired tool change is not possible. No buffer magazine defined.
- Alarm display.
- Interface signals are set.
- Correction block is reorganized.
Check whether the magazine data have been defined correctly.
Clear alarm with NC START or RESET key and continue the program.
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02