Siemens SINUMERIK 840D sl Series Diagnostics Manual page 118

Overview of Alarms
Definitions: This alarm occurs with 3D face milling when, at the time of block transition, the surface
defined in the first block is continued in the second block with the rear side of the surface
defined there. The block number in the alarm designates the second block.
Reactions: - Correction block is reorganized.
- Local alarm reaction.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm at block end.
Remedy: Modify part program.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
10767
Channel %1 block %2 processing with tilt angle unequal 0 not possible
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: When face milling with a torus milling cutter, the tilt angle must be 0 if the surface normal
vector and the tool orientation include an angle that is less than the limiting angle given by
the machine data 21082 CUTCOM_PLANE_ORI_LIMIT, i.e. in this case only the lead
angle may be unequal to 0.
Reactions: - Correction block is reorganized.
- Local alarm reaction.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm at block end.
Remedy: Modify part program. If necessary, use another tool (ball end mill).
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
10768
Channel %1 block %2 illegal tool orientation with 3D tool radius compensation
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: This alarm can occur with 3D face milling: The angle between the surface normal vector
of the surface to be machined and the extremal surface normal vector of the tool surface
is smaller than the limit value given by the machine data 21080
CUTCOM_PARALLEL_ORI_LIMIT, or the tool is oriented such that machining would
have to be performed from the rear side of the surface. In this case, the extremal surface
normal vector is the vector whose direction deviates most from the direction in the tool
point (i.e. parallel to the tool longitudinal axis).
With cylindrical tools or tools which end in a cylindrical part (e.g. the standard torus milling
cutter), this vector is positioned perpendicular to the tool vector. For this type of tool, the
alarm indicates that the angle between the tool longitudinal axis of, for example a side line
of the cylinder, and the surface to be machined is smaller than the minimum permissible
value. With tools whose (valid) surface ends in a conical part instead of a cylindrical part
(e.g. a beveled cutter or a torus milling cutter where the torus is defined to be smaller than
90 degrees), this alarm indicates that the angle between a side line of the taper and the
surface to be machined is smaller than the minimum permissible value.
Reactions: - Correction block is reorganized.
- Local alarm reaction.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm at block end.
Remedy: Modify part program. If necessary, use another tool.
2-118
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005