Siemens SINUMERIK 840C Installation Instructions Manual page 783

12 Functional Descriptions
12.1.2 Functional description
Pos.
error
Error
= 0
Neg.
error
Commencing at the reference point and proceeding in a negative direction, the error curve
runs to the end of the traverse path within the tolerance band. No compensation is necessary.
A better result is obtained through positive compensation at K3. To stick as closely as possible
to 0 error, compensation in a positive direction of travel must be negative at K6, positive at
K16 and K17, negative at K20, and positive again at K24.
The following machine data must be set:
• Option leadscrew errror compensation
• NC MD 3161 =
• NC MD 3241 =
• NC MD 3281 =
• NC MD 6000 =
• NC MD 6001 =
• NC MD 6002 =
• NC MD 6003 =
• NC MD 6004 =
• NC MD 6005 =
• NC MD 6006 =
12–8
More user manuals on
Spacing
K3 K5
K6
Reference point
+ –
Tolerance band e.g. 10 µm
Compensated curve
Compensation value e.g. 5 µm
1 (to define K5 as reference point)
10000 (10 mm spacing)
5 (compensation value 5 µm for position control resolution of
-3
1/2 x 10 mm)
00 11 00 00 (positive compensation at K3)
00 00 10 00 (negative compensation at K6; bits 0 and 1 must be 0)
0 no compensation
0 no compensation
00 00 11 11 ( positive compensation at K16 and K17)
00 00 10 00 (negative compensation at K20)
00 00 11 00 ( positive compensation at K24)
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K20 K24
K16
K17
+ + –
+
© Siemens AG 1992 All Rights Reserved
11.92
Traverse path
6FC5197- AA50
SINUMERIK 840C (IA)