Siemens SINUMERIK 840C Installation Instructions Manual page 208

07.97
When allocating the numbers, make sure that there is no collision with other M functions.
Generally, the following values are permissible:
Example
MD 260 = 123
MD 261 = 456
Selection of C axis operation for spindle 1
M1 = 123 L F
Deselection of C axis operation for spindle 3
M3 = 456 L F
Note:
After C axis mode has been selected, all axes involved in the functions G02, G03, G12, G13,
G33, G34, G35, G36 must first have been traversed with G90.
Example
N10 M70
N20 G0 C0 Z5
N30 G36 C0 Z-15 K3 F200
300
TO allowance for protection zone adjustment
0
Note:
For further information see description of the function collision monitoring.
310
0
311
0
With NC MD 310 and 311, the cam signals can be assigned to an output byte of a certain HW
MIXED I/O. Enter either 11 or 91 if using the 1st output byte of the 1st MIXED I/O. Entering 22
or 92 gives an analog assignment of the output byte to the 2nd byte of the 2nd MIXED I/O.
The decimal values for the synchronous interface to the PLC are entered in the same way.
Both MDs have a default setting of 0. If illegal values are entered, alarm 45 is triggered.
Assignment of MIXED I/O module for emergency retraction
312 - 317
Default value
0
A signal can be output via a MIXED I/O group to trigger a fast emergency retraction if a fault is
caused by external HW. One output byte is used for each mode group.
_______
1) As from SW 3
2) MD 314 to MD 317 as from SW 4
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
0, 1, 2, 3, 4, 5, 17, 19, 30, 37
(Selection of C axis operation)
(Traverse axes involved in thread cutting operation)
(Thread cutting position-controlled axes)
Lower input limit Upper input limit
0 9999 9999
Output byte to user interface
Lower input limit Upper input limit
91, 92, 93 and 94
0
999 (as from SW 4)
Output byte to MIXED I/O
Lower input limit Upper input limit
11, 12, or 21, 22
0
999 (as from SW 4)
to a mode group
Lower input limit Upper input limit
0 22, 94 (as from SW 4)
6FC5197- AA50
6.2 General machine data (general data)
1)
2)
Active on
Power On
Units
IS
Active on
Power On
Units
-
Active on
Power On
Units
-
Active on
Power On
Units
–
6–23