Data Blocks (Db) - Siemens SINUMERIK 840C Installation Manual

5 PLC Interface

5.1.2 Data blocks (DB)

5.1.2 Data blocks (DB)
Data blocks of class DB
Data blocks DB 1 to DB 149 are reserved for Siemens applications.
Data blocks DB 150 to DB 255 can be used by the user.
DB No. DB designation DB name
1 * DIAG-DB
2 * STATUS-DB
3 * DATKAN-DB
4 * FM/BM-DB
10 * NS KN 1
11 * NS KN 2
12 * NS KN 3
13 * NS KN 4
4)
14 NS KN 5
4)
15 NS KN 6
28 SI
29 NS ELG
30 * DEC MFU
31 * SPI SIG
32 * ACHS SIG
33
34 E-PU
35 A-PU
36 * DUE NC
37 * SER SCH.
38 CL:ZW-DB
39
40 * NS BEDT.
41 * NS KK
48 * NS COM
49
.
. .
57
58 * MELD
59 DB-ZENTRAL
60 *
MDG WO
61 *
MDF WO
62 *
MDA WO
Abbreviations:
OS Operating system
CL Computer link
_______
2) Up to SW 2; with SW 4 and higher used for Fast Data Channel function
3) SW 3 and higher; control for data transfer
3) SW 4 and higher
5–2
Diagnostic DB for
2
PLC status channel )
2
PLC data channel )
Error and operational messages
Interface NC channel 1
Interface NC channel 2
Interface NC channel 3
Interface NC channel 4
Interface NC channel 5
Interface NC channel 6
Safety Integrated (SW 5 and higher)
ELG signals and 611D signals
Decoded M functions (list)
Interface for spindle-specific signals
Interface for axis-specific signals
Reserved
Input buffer, computer link
Output buffer, computer link
Interface for data transfer NC
Interface for serial interface
Status DB computer link
Interface operator panel
Interface command channel
Interface to communication area NC/PLC
Reserved
.
.
.
Reserved
Interface for general messages
Central DB in link RAM
MD words basic program
MD words function blocks
MD words user
Note:
The data blocks marked with an * are set up and initialized after
overall reset on cold restart by the PLC operating system. These
blocks are always initialized anew on each cold restart.
© Siemens AG 1992 All Rights Reserved
- PLC
< >
3
)
No significance for 840
6FC5197- AA60
SINUMERIK 840C (IA)
04.96
Pack-
age
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
CL
CL
OS
OS
CL
OS
OS
OS
OS
.
.
.
OS
OS
OS
OS
OS
OS