Human-machine Interface
8-19
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Variables in the user DB
The Table below contains the signals/data that must be entered in the user DB via
the OP (FM interface).
For a detailed description of the structure of the user DB, see Section 6.6.
Table 8-3 Variables for the user DB
User DB
Variable
type
Description User DB
DBB17 BYTE Velocity or frequency level 1, 2 [BP] −
DBX34.0
DBX34.6
DBX35.6
BOOL Single functions
Servo enable
Parking axis
Disable software limit monitoring
Internal
Write re-
quest
DBX37.0
DBX37.1
DBX37.2
DBX37.3
DBX37.5
DBX37.6
BOOL Single commands
Activate machine data
Delete distance-to-go
Automatic block advance
Automatic block return
Restart
Undo set actual value
Internal
Write re-
quest
DBD140 DINT Zero offset DBX39.1
DBD144 DINT Set actual value DBX38.7
DBD156 DWORD Setpoint for incremental dimension DBX38.2
DBD160 DWORD Speed level 1 DBX38.0
DBD164 DWORD Speed level 2
DBD168 DWORD Frequency level 1 DBX38.1
DBD172 DWORD Frequency level 2
DBB176
to
DBB195
STRUCT MD block DBX38.3
DBB222
to
DBB241
STRUCT MD block on-the-fly DBX38.4
DBB242 BYTE Program selection − program number DBX39.5
DBB243 BYTE Program selection − block number
DBB244 BYTE Program selection − direction
DBB250 BYTE Teach In − program number DBX39.7
DBB251 BYTE Teach In − block number
DBW500 WORD MD No. −
DBD502 DINT/
relev. MD
MD value −
DBB506 BYTE SM No. −
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