Siemens SINUMERIK 840D sl Function Manual page 361

2.1.5 Supplementary conditions for expansions
Response to pulse blocking
The cancellation of pulse enable either through terminal 663 or through NST DB31, ...
DBX21.7 ("Pulse enable") is denoted below as pulse inhibit.
The machine data:
MD37002 $MA_FIXED_STOP_CONTROL
can be used to influence the interaction of travel to fixed stop and pulse blocking.
Bit 0: Response in case of pulse blocking at stop as follows:
Bit 0 = 0
Bit 0 = 1
Once the pulse blocking is canceled again, the drive will press at the limited torque again.
The torque is actuated steplike.
At the fixed stop, the drive can be controlled either via:
• NST DB31, ... DBX21.7 ("Pulse enable")
• Drive monitor 663 pulse enable
The NC evaluates the NST DB31, ... DBX21.7 ("Pulse enable") by itself.
Depending on the drive machine data:
MD1012 $MD_FUNC_SWITCH
In the case of FXS the NC responds to a change of state of the terminal 663 as follows:
Bit 2 = 0
Bit 2 = 1
Basic logic functions: Travel to fixed stop (F1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Or
Travel to fixed stop aborted.
Travel to fixed stop is interrupted,
i.e., the drive becomes powerless.
The NC does not receive the status of terminal 663.
The NC does not receive the status of terminal 663.
Detailed Description
2.1 General functionality
25