Siemens SINUMERIK 840C Installation Instructions Manual page 204

09.01
164
Dead time for calculation for extended thread
Default value
36
28 (SW 5 and higher)
This machine data is preset by the system and should not be altered by the user. The function
EXTENDED THREADING PACKAGE is required.
168
Default value
16 8 * 4 (as from SW 4)
MD 168 is set as the first MD. MDs 155 + 160 are dependant on MD 168, i.e. the input
resolution of MD 155 is determined by MD 168.
Permissible values: 8, 10, 12, 16, 32
If the machine data contains a value for the drive basic cycle time which is outside the
permissible range, the NC software automatically enters the default value 16 (1 ms) during
start up. The value is automatically entered in the machine data.
Note:
In the case of the 840C, the drive basic cycle time must be set to 1 ms or 2ms, taking the
larger value of 2 ms for a large number of axes.
208
209
Default value
999 999
NC MD 208 and 209 can be used to restrict the maximum value in the tool offset wear
memory. Specification of 999 999 limits the maximum entry in tool wear memory to 9.99999
units.
Entries made via the Input and Edit keys are subjected to a limit check.
210
Default value
1
Note
The TO memory can be subdivided into as many as four TO areas for pallet changing or dual-
slide machines, the advantage being that the individual TO areas can be invoked for the
various channels over D-numbers D0 to Dx, i.e. the slides on a dual slide machine can
interchange programs, as both tool turrets can be referenced over D-numbers D0 to D8.
It may prove practical as a protective measure to prevent certain channels from accessing
specific TOs.
_______
* The lower limits only apply if the control is operated from a channel.
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
Lower input limit Upper input limit
–
Drive basic cycle time
Lower input limit Upper input limit
Maximum tool wear P5, P6
Maximum tool wear P7
Lower input limit Upper input limit
999 999
1 999 999.99
(as from SW 4)
Number of TO areas
Lower input limit Upper input limit
1
6FC5197- AA50
6.2 General machine data (general data)
Units
1/8 of the IPO
48
cycle
Active on
Power On
Units
32 62.5 µs
Units
0.00001
see below
Units
4 –
Active
–
Active
at once
Active
at once
Active
6–19