Traversing Programs - Siemens SIMATIC FM 353 Manual

5.3.4

Traversing programs

DB structure
Table 5-7 gives you a general view of the structure of the "traversing programs"
data block (DB-NC).
Table 5-7 DB structure − traversing programs
Byte Variable type
0 WORD
2 WORD
4 DWORD
8 WORD
10 WORD
12 2 STRING
16 DWORD
20 4 CHAR
24 DWORD
28 WORD
30 WORD
32 18 STRING
52 STRUCT
72 STRUCT
92 STRUCT
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Value Significance of the variables
DB header
Rack slot
DB No. (w 1000)
Reserved
Error No. (from FM)
1 Channel number
NC DB identifier/type
353 Module identifier
0 Version number/block number
1 − 3 Measurement-system grid per MD7
Reserved
Reserved
ASCII char. NC program name
NC block NC block new (modification range)
NC block 1st traversing block
NC block 2nd to 100th traversing block
Defining Parameters
Comment
Module address
As in DB header
With HMI services
2 ASCII characters
FM 353
(DB structure)
Unit of measurement
max. 18 characters
see Section 9.3.11, 10.1
5-23