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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-60 minutes
Siemens 10881 - Block overflow of local block buffer in the case of chamfers or radii
Between 2 blocks containing the contour elements and to be joined with a chamfer or a radius (CHF, RND), so many dummy blocks have been programmed without contour information that the internal buffer is too small Control reaction: Correction block is reorganized. Local alarm reaction. Interface signals are set. Alarm display.
10881
Siemens 10881 - Block overflow of local block buffer in the case of chamfers or radii
Block overflow of local block buffer in the case of chamfers or radii
Between 2 blocks containing the contour elements and to be joined with a chamfer or a radius (CHF, RND), so many dummy blocks have been programmed without contour information that the internal buffer is too small Control reaction: Correction block is reorganized. Local alarm reaction. Interface signals are set. Alarm display.
Safety
- Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.
Common Causes
- Between 2 blocks containing the contour elements and to be joined with a chamfer or a radius (CHF, RND), so many dummy blocks have been programmed without contour information that the internal buffer is too small
Troubleshooting Steps
- 1Modify part program such that the number of dummy blocks is reduced.
- 2Clear alarm with NC START or RESET key and continue the program
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