Siemens SINUMERIK 840C Installation Instructions Manual page 618

8 PLC Machine Data (PLC MD)
8.5 PLC MD for the operating system (system bits)
PLC MD
6400 - 6431
6480 - 6511
6560 - 6563
6572 - 6575
These PLC MDs are internal system bits. The default values must not be
changed.
15 14
Byte No.
DB63
7
PLC MD
6068
Edge for interrupt byte
1st DMP interface module
DL 34
6069
Edge for interrupt byte
1st DMP interface module
DR 34
6070
Edge for interrupt byte
2nd DMP interface module
DL 35
6071
Edge for interrupt byte
2nd DMP interface module
DR 35
6072
Edge for distributed interrupt byte
interface PLC/PLC 135WD
DL 36
6073
DR 36
6074
Enable for interrupt byte
1st DMP interface module
DL 37
6075
Enable for interrupt byte
1st DMP interface module
DR 37
6076
Enable for interrupt byte
2nd DMP interface module
DL 38
6077
Enable for interrupt byte
2nd DMP interface module
DR 38
6078
Enable for distributed interrupt byte
interface PLC/PLC 135WD
DL 39
6079
DR 39
1) SW 3 and higher
8–26
PLC performance (IA)
13 12
Bit No.
6 5 4
1)
1)
Reserved
1)
1)
Reserved
© Siemens AG 1992 All Rights Reserved
Default values
0000 0001
0000 0001
1111 1111
1111 1111
11 10 9
3 2 1
1st line, bits 0...7
2nd line, bits 0...7
1st line, bits 0...7
2nd line, bits 0...7
Bits 0...7
Bits 0...7
1st line, bits 0...7
2nd line, bits 0...7
1st line, bits 0...7
2nd line, bits 0...7
Bits 0...7
Bits 0...7
6FC5197- AA50
SINUMERIK 840C (IA)
09.95
8
0