Siemens Sinumerik 840C Diagnostics Manual page 35

04/96
01/99
196* Coupled-motion axis assigned twice
Scan
When executing a part program
S
Effect
Interlocking of NC START
S
Machining is interrupted
S
Explanation
2 leading axes have been programmed whose coupled axes are the same.
Axis X → Axis Y
Axis Z → Axis Y
S
2 leading axes have been programmed with one leading axis also being the coupled axis of the other leading
axis.
Axis X → Axis Y
Axis Y → Axis Z
S
Remedy
Correct program
2000 Emergency Stop
Scan
Cyclic
S
Effect
Interlocking of NC START
S
Setpoint 0
S
Follow-up operation as internal setting
Explanation
The "EMERGENCY STOP" signal is output to the NC from the PLC.
S
Remedy
Check with PLC STATUS
S
Check whether "EMERGENCY STOP" cam has been approached or "EMERGENCY STOP" button has been
actuated
S
Check the PLC user program
Note
On selecting Start-up mode, there is always an Emergency Stop message.
2021 Contour violation with tool radius compensation
Scan
When executing a part program, with active TRC
Not: in the selection block
in the deselection block
Effect
The tool radius compensation has recognized a contour violation. Processing of the part program is interrupted
(depending on MD 5024, bit 0), the alarm is cancelled with RESET.
Explanation
– The contour calculation results in a traversing movement which is opposite to the programmed movement
(e.g. when machining an internal circle, where the milling radius is larger than the circle radius).
– Between two blocks in the TRC plane, too many blocks have been programmed outside the TRC plane (see
also Programming Guide, Section 11.11). In this case, the block number displayed indicates the 4th block
outside the TRC plane.
– If the path to be traversed with perpendicular external contours is smaller than the active tool radius and G450
is programmed (TRC with transition circle).
S
Remedy
Check program specifications
S
Deselect compensation at the respective point and select it again
S
Check used tool against the specifications (tool radius too large?)
S
G451, program TRC with intersection.
S
Note
Alarm is displayed with reference to block and channel.
2022 Plane not defined for TO type
Scan
When executing a part program
S
Effect
Interlocking of NC START
S
Machining stops
Explanation
On selecting a D No. of tool type 50..59, the CRC plane and the length compensations were not defined with G16.
Remedy
Define CRC plane and length compensations with G16!
Note
Applies as from SW 4
Note
Alarm is displayed with reference to block and channel
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
1 Alarms
1.5.1 Alarm description
Reset key
POWER ON
Reset key
Reset key
1–27