Siemens SINUMERIK 840Di Function Manual page 342

Detailed Description
2.1 General functionality
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:
• IS "Pulse enable" (DB31, ... DBX21.7)
• Drive monitor 663 pulse enable
The NC evaluates IS "Pulse enable" (DB31, ... DBX21.7) itself.
Depending on the drive machine parameter:
MD1012 FUNC_SWITCH
the NC reacts with FXS to a change in the status of terminal 663 as follows:
Bit 2 = 0
Bit 2 = 1
Terminal 663
When pulse enabling is canceled by terminal 663, the drive is deenergized and coasts to a
standstill immediately.
With:
MD1012 FUNC_SWITCH, Bit 2 = 0,
this is not signaled to NC.
The status can be checked in the line "Pulse enable" (terminal 663) in service display service
drive.
Note
Travel to fixed stop only can be stopped by blocking of the pulses from IS "Pulse enable"
(DB31, ... DBX21.7) or Terminal 663, if:
MD37002 FIXED_STOP_CONTROL, Bit 0 = 0
and
MD1012 FUNC_SWITCH, Bit 2 = 1
are fulfilled.
Both interrupting FXS and stopping "travel to fixed stop" is achieved by the following settings:
MD37002 FIXED_STOP_CONTROL, Bit 0 = 0
and
MD1012 FUNC_SWITCH, Bit 2 = 0.
2-18
or
The NC does not receive the status of terminal 663.
The NC does receive the status of terminal 663.
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Travel to Fixed Stop (F1)