Plc-Controlled Axes - Siemens SINUMERIK Series Function Manual

P2: Positioning axes
10.7 Control by the PLC
10.7.2

PLC-controlled axes

PLC actions
The table below compares the following PLC actions with the corresponding NCK reactions
for a machine axis 1:
● Start machine axis as PLC axis via FC 18
● Initiate
● Trigger axial
● Trigger
● Cancel or set controller enable for the machine axis
● Relinquish control of machine axis to NC
Examples of NCK reactions
PLC actions are shown as NCK reactions in the table below.
PLC actions
Start machine AX1, residing in the 1st channel,
as PLC axis via FC 18
Initiate NC stop axes and spindles
DB21, ... DBX7.4 = 1 (NC stop axes plus spindle)
DB21, ... DBX7.1 = 1 initiate (NC start)
PLC wants to control AX1,
DB31, ... DBX28.7 = 1 (PLC controls axis)
Initiate NC stop for axes and spindles
DB21, ... DBX7.4 = 1 ("NC stop axes plus
spindle")
Initiate axial stop
DB31, ... DBX28.6 = 1 (stop along braking ramp)
Initiate that axial movement continues
DB31, ... DBX28.2 = 1 (continue)
Initiate NC-RESET
DB21, ... DBX7.7 = 1 initiate (reset)
Initiate axial reset
DB31, ... DBX28.1 = 1 (reset)
632
or
NC start NC stop
, or
STOP RESUME RESET
-
NC RESET
NCK reaction
AX1 is stopped.
AX1 continues to traverse.
Checking AX1 is relinquished to the PLC. DB31,
... DBX63.1 = 1 (PLC controls the axis)
AX1 is not stopped.
AX1 is stopped
DB31, ... DBX63.2 ==1 (axis stop active)
AX1 moves further
DB31, ... DBX63.2 == 0 (axis stop active)
No effect on AX1
AX1 is stopped and the traversing motion is
interrupted:
DB31, ... DBX63.2 = 0 (axis stop active)
•
Read-in axial machine data
•
DB31, ... DBX63.0 = 1 (reset executed)
•
DB31, ... DBX63.2 = 0 (axis stop active)
•
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions