Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Axis inexplicably don't moves! Is waiting for...what?

Created by: mircoaie3 at: 8/29/2012 11:26 AM (8 Replies)

Rating (2)

Thanks 5

9 Entries

8/29/2012 11:26 AM	Rate (0)
mircoaie3 Bronze Member Joined: 10/26/2009 Last visit: 12/10/2024 Posts: 63 Rating: (11)	On a Sinumerik 840Dsl machine (NCU 710.2, software version 01.05+SP01+HF01, HMI Advanced V7.5 SP3), ONLY in AUTOMATIC mode, during a tool-change phase, when the X axis should be traversed in "+" direction, it don't moves. On the HMI advenced "Machine" area I see the "+" sign on the left of the "X" axis, I see the calculated distance-to-go, but the axis don't moves! On the upper left corner of the screen there is a clock icon on a yellow background, saying that the NC is waiting for something, but without other indications (please find attached a screenshot of this situation). In MDA mode the same part program, in the same conditions, works well! Only in AUTOMATIC mode it does not work! I've checked all the "enabling signal" I know (db3x.dbx1.6, dbx1.7, dbx2.1, dbx21.7), all the "feed stop" signals (db2.dbb144-145), all the "feed disable" ad "read-in disable" signals... I do not know what to check again! (I can't have direct access to the machine, I'm doing remote diagnosis by giving indications to the customer by phone and e-mail...) Have someone some ideas to help me, please? Any ideas would be appreciated ... Thanks a lot! Attachment X_axis_wait_for_something.pdf (382 Downloads)
	Last edited by: mircoaie3 at: 8/29/2012 1:14 PM
Suggestion To thank Quote Answer

8/30/2012 7:47 PM	Rate (0)
pfuser Silver Member Joined: 9/18/2006 Last visit: 11/14/2024 Posts: 593 Rating: (64)	Hi. Probably there is a signal db3x.dbx4.3. You are right. The axis should move, if there are signals db3x.dbx1.6 (1.5), db3x.dbx2.1, db3x.dbx21.7 and there is no signal db3x.dbx4.3. That "м37 command does. Besr regards.

Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users mircoaie3

8/31/2012 10:43 AM	Rate (0)
mircoaie3 Bronze Member Joined: 10/26/2009 Last visit: 12/10/2024 Posts: 63 Rating: (11)	Hi pfuser, thank you very much for your help. The DB31.DBX4.3 bit is ok (=0), please find attached a screenshot showing the PLC status of some bits of DB21 and DB31. M37 function waits for the tool-magazine rotation: it sets a read-in disable bit (DB2.DBX8.0=1). This bit is resetted when the tool-magazine reaches the right position. I've obviously checked the status of this bit, and it is OK. Furthermore, when the read-in disable is active, on the upper-left side of the screen it appears the message "Wait: Read-in disable missing" (in addition to the PLC message 510216 "Waiting for tool-magazine rotation"). I've no other ideas... Another information: I'm trying to replicate the error in my laboratory, with an identical NCU (710.2) with the "series-start up" archives of the non-working machine loaded. The only difference from the real machine are the MD "CTRL_OUT_TYPE"=0 and "ENC_TYPE"=0 (for simulating the axis) and the MD "REFP_NC_START_LOCK"=0 (for allowing the "cycle start" with not-referenced axes). In my laboratory the "simulated" tool-change works well, both in MDA and AUTOMATIC mode! Thank you again for your kind attention. Best regards. Attachment PLCStatus.jpg (428 Downloads)

Suggestion To thank Quote Answer

8/31/2012 11:36 AM	Rate (0)
pfuser Silver Member Joined: 9/18/2006 Last visit: 11/14/2024 Posts: 593 Rating: (64)	mircoaie3 M37 function waits for the tool-magazine rotation: it sets a read-in disable bit (DB2.DBX8.0=1). Hi. Read-in disable: bit DB2.DBX6.1 DB2.DBX8.0: Activate machine-related protection zone (Area 1). Display: DB21.DBB6, DB21.DBB7. Display (related protection zone preactivated): DB21.DBB272, DB21.DBB274, DB21.DBB276, DB21.DBB278. Best regards.
	Last edited by: pfuser at: 8/31/2012 11:41 AM
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users mircoaie3

8/31/2012 12:05 PM	Rate (1)
mircoaie3 Bronze Member Joined: 10/26/2009 Last visit: 12/10/2024 Posts: 63 Rating: (11)	Hi pfuser, sorry I don't understand... please find attached an extract of the "Lists" manual... Byte 8 of DB2 isn't "Read-in disable byte 3"? "Activate machine-related protection area" bits are in DB21.DBB8, not in DB2... Thank you. Attachment DB2_from_Lists_manual.pdf (364 Downloads)
	Last edited by: mircoaie3 at: 8/31/2012 12:13 PM
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users pfuser

8/31/2012 7:01 PM	Rate (0)
pfuser Silver Member Joined: 9/18/2006 Last visit: 11/14/2024 Posts: 593 Rating: (64)	Hi. I was not paying attention. you're right. excuse me.

Suggestion To thank Quote Answer

9/4/2012 8:25 AM	Rate (1)
pfuser Silver Member Joined: 9/18/2006 Last visit: 11/14/2024 Posts: 593 Rating: (64)	Hi. I have another suggestion. On the machine function is active G95 (Feedrate F in mm/spindle revolutions). In the office of the function is active G94 (F Feed in mm/min) Best regards.
	Last edited by: pfuser at: 9/4/2012 8:29 AM
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users mircoaie3

9/4/2012 9:11 PM	Rate (0)
mircoaie3 Bronze Member Joined: 10/26/2009 Last visit: 12/10/2024 Posts: 63 Rating: (11)	Thank you very much for your suggestion, I will check... Any other suggestion will be very appreciated...

Suggestion To thank Quote Answer

9/7/2012 1:51 PM	Rate (0)
mircoaie3 Bronze Member Joined: 10/26/2009 Last visit: 12/10/2024 Posts: 63 Rating: (11)	I've solved the problem. The problem was due to the fact that the tool-change cycle was called (in automatic mode) with G95 active, so the axis was standstill, waiting for the spindle speed. I've been able to replicate the situation in my laboratory, but, when the axis stops, in laboratory on the screen appears the message "Waiting for master spindle speed"). With this message the solution is clear... I don't understand why, on the customer's machine, there was no message: only the "clock symbol", without explanations (maybe an HMI-Advanced bug?). Thank you very much, pfuser, for your valuable help.

Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users pfuser

|

Share this page:

Share this page on...

Follow us on