Siemens SIMATIC FM 353 - Data Block for Status Messages (DB-SS)

Human-machine Interface
8-20
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
8.3 Data block for status messages (DB-SS)
Overview
The following table lists the parameters/data that can be read out during operation.
Table 8-4 Parameters/data of the DB-SS (DB No. 1000)
Byte Variable type Value Significance of the variables Comment
0...35 DB header
36...59 Internal header information
Offset
1)
Variable type Value Significance of the variables Comment
24 8 x BOOL Control signals Byte 0
25 8 x BOOL Control signals Byte 1
26 2 x BYTE Control signals Byte 2, 3
28 2 x BYTE Control signals Byte 4, 5
30 8 x BOOL Checkback signals Byte 0
31 8 x BOOL Checkback signals Byte 1
32 BYTE Checkback signals Byte 2
33 8 x BOOL Checkback signals Byte 3
34 BYTE Checkback signals Byte 4
35 8 x BOOL Checkback signals Byte 5
36 12 x BYTE Reserved
48 DWORD Velocity level 1
52 DWORD Velocity level 2
56 DWORD Frequency level 1
60 DWORD Frequency level 2
64 DWORD Setpoint for incremental value
68 STRUCT MDI block
struc.
MDI block
88 16 x BOOL Single functions
90 16 x BOOL Single commands
92 DINT Zero offset
96 DINT Set actual value
100 DINT Set actual value on the fly
104 16 x BOOL Digital inputs/outputs
106 STRUCT MDI block
struc.
MDI block on the fly
1) A variable in the S7 protocol is addressed by the DB No. and, depending on data format, by the DBB, DBW
and DBD No. (offset in DB), as well.