Control-System Response To Power On, Mode Change, Reset, Block Search, Repos - Siemens SINUMERIK 840D sl Function Manual

H1: Manual travel and handwheel travel
4.1 Brief description
4.1.4 Control-system response to power ON, mode change, RESET, block search,
REPOS
A RESET will always abort (with braking ramp) any traversing movement triggered by
handwheel travel.
Selection from MCP
The following example shows the sequence of operations for selecting the "continuous"
machine function for a machine axis of the machine control panel.
①
②
③
Figure 4-1
For more information about signal transmission between the MCP and PLC, see:
References:
/FB1/ Function Manual Basic Functions; Basic PLC Program (P3)
288
The user selects the "Continuous JOG" machine function on the machine control panel for a
machine axis.
"Machine function" interface signal
The PLC program (basic or user program) logically combines this IS and sends the following
request to the NCK interface
DB31, ... DBX5.6 (continuous machine function).
Before this happens, the PLC user program first checks that this request is permissible with
regard to the current machine status.
"Active machine function" interface signal
The machine function is selected within the control.
As soon as the "continuous JOG" (DB31, ... DBX65.6) machine function is active, this is
signaled to the PLC by the NCK.
Sequence of operations for selecting machine functions of the machine control panel
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions