Siemens SINUMERIK 840D sl Function Manual page 151

Two bits of the machine data are assigned to each fault condition:
Fault status
No valid cutting direction is defined for the active tool.
The cutting edge angle (clearance angle and holder angle) of the
active tool are both zero.
The clearance angle of the active tool has an impermissible value
(< 0° or > 180°).
The holder angle of the active tool has an impermissible value
(< 0° or > 90°).
The tool insert angle of the active tool has an impermissible value
(< 0° or > 90°).
The cutting edge position - holder angle combination of the active tool
is not permitted. (The holder angle must be ≤ 90° for cutting edge
position 1 to 4; for cutting edge positions 5 to 8 it must be ≥ 90°.)
The tool insert is not in the machining plane and angle γ between the
tool insert and the machining plane exceeds the upper limit specified
with setting data SD42998 $SC_CUTMOD_PLANE_TOL.
The tool insert is not in the machining plane. The magnitude of an‐
gle α is greater than 1°. Angle α is the angle of rotation around the
coordinate axis, which is perpendicular both to the axis of rotation of
angle β and to the axis of rotation of angle γ (in the case of G18, the
X axis).
Note
The 2nd bit (program stop) is only effective if the corresponding 1st bit (alarm output) is set.
Note
Errors with error numbers ≥ 100 always result in an alarm being output and program stop.
Initialization value for CUTMOD
The function that can be programmed with NC command CUTMOD (Page 153) is automatically
initialized with the following value after a warm restart:
MD20127 $MC_CUTMOD_INIT = <initialization value for CUTMOD>
Default value: 0
If MD20127 = -2, the value from the following machine data becomes the initialization value:
MD20126 $MC_TOOL_CARRIER_RESET_VALUE (active tool carrier on reset)
Function-specific tool settings
The following machine data is a bit string with which various functions relating to tools can be
controlled:
Tools
Function Manual, 06/2019, A5E47435126B AA
2.9 Modification of the offset data for rotatable tools
W1: Tool offset
Bit Meaning
0 Alarm output
1 Program stop
2 Alarm output
3 Program stop
4 Alarm output
5 Program stop
6 Alarm output
7 Program stop
8 Alarm output
9 Program stop
10 Alarm output
11 Program stop
12 Alarm output
13 Program stop
14 Alarm output
15 Program stop
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