Siemens SIMATIC FM 453, Manual

Page: 86 / 380

5-24
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
5.3.4 Traversing Programs
Table 5-8 gives you a general view of the structure of the “traversing pro-
grams” data block (DB-NC).
DB No.: 1001...1199 for channel 1
DB No.: 1301...1499 for channel 2
DB No.: 1601...1799 for channel 3
Table 5-8 DB Structure – Traversing Programs
Address Variable Type Value Significance of the Variables Comment
DB header (36 bytes)
0 WORD Rack slot Module address
2 WORD DB No. (
w
1000) As in DB header
4 DWORD Reserved
8 WORD Error No. (from FM) With MMI services
10 WORD 1 Channel number
12 2 STRING NC DB identifier/type 2 ASCII characters
16 DWORD 453 Module identifier FM 453
20 4 CHAR 0 Version number/block number (DB structure)
24 DWORD 1 – 3 Measurement-system grid per MD7 Unit of measurement
28 WORD Reserved
30 WORD Reserved
32 18 STRING ASCII char. NC program name max. 18 characters
52 STRUCT NC block NC block new (modification range)
72 STRUCT NC block 1st traversing block
92 STRUCT NC block 2nd to 100th traversing block see Sections 9.3.11, 10.1
DB Structure
Defining Parameters of the FM 453