Deselection - Siemens SINUMERIK 840D sl Function Manual

F1: Travel to fixed stop
6.2 Detailed description
Overview
Figure 6-3
6.2.2.4

Deselection

The "travel to fixed stop" function is deselected using the command FXS[<axis>] = 0 in a
block of an NC program.
Actions when deselecting the function
When deselecting the function, the following actions are executed:
● A preprocessing stop is initiated (STOPRE)
● The NC/PLC interface signals are reset
– DB31, ... DBX62.4 = 0 (activate travel to fixed stop)
– DB31, ... DBX62.5 = 0 (fixed stop reached)
● Depending on the machine data, the system waits for acknowledgment from the PLC user
program:
– MD37060 $MA_FIXED_STOP_ACKN_MASK
– DB31, ... DBX3.1 == 0 (enable travel to fixed stop)
– DB31, ... DBX1.1 == 0 (acknowledge fixed stop reached)
● Exiting the follow-up mode
● Axis resumes closed-loop position control
300
Fixed stop is not reached
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions