Siemens SINUMERIK 840C User Manual
Page 612

8 PLC Machine Data (PLC MD)
09.95
8.5 PLC MD for the operating system (system bits)
6042
DL 21
DR k+3
DL k+3
PLC MD
DB63
DW No.
Bit No.
7
6
5
4
3
2
1
0
Signal DB 31
Default value:
All bits default to 0
K = 0, 4, 8, 12, 16, 20 (1st to 6th spindle)
Bit = 0
The system software does not evaluate the bits in the corresponding interface
byte for operational messages.
Bit = 1
The system software evaluates the bits in the corresponding interface byte for
operational messages.
Notes:
1) The bit applies to all spindles.
2) If the same bit is also set for error messages (PLC MD 6034), the PLC goes into the Stop
loop.
Sample application:
DB 31 D 7.1
1 signal operational message 8029;
PLC MD 6042.1=
1
See PLC Installation Section.
6043
DR 21
DR k+3
DL k+3
PLC MD
DB63
DW No.
Bit No.
7
6
5
4
3
2
1
0
Signal DB 32
Default value:
All bits default to 0
K = 0, 4, 8, 12, ... 116 (1st to 30th axis)
Bit = 0
The system software does not evaluate the bits in the corresponding interface
byte for operational messages.
Bit = 1
The system software evaluates the bits in the corresponding interface byte for
operational messages.
Notes:
1) The bit applies to all axes.
2) If the same bit is also set for error messages (PLC MD 6035), the PLC goes into the Stop
loop.
Sample application:
DB 31 D 7.1
1 signal operational message 8029;
PLC MD 6042.1=
1
See PLC Installation Section.
8–20
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)