Programming And Command Elements - Siemens SINUMERIK 840D sl Programming Manual

10.1.1

Programming and command elements

Function
A synchronized action is programmed on its own in a separate block and triggers a machine
function as of the next executable block (e.g. traversing movement with G0, G1, G2, G3).
Synchronized actions consist of up to five command elements each with a different task:
Programming
ID=n keyword condition DO action 1 action 2 ...
Command elements
Identification number
ID/IDS
Keyword
Condition
DO
Action
Technology cycle
Example
ID=1
Synchronized action
no. 1:
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
Scope of the modal synchronized actions in automatic mode or
in each operating mode.
Querying frequency none, WHEN, WHENEVER, FROM, EVERY,
Gating logic for main run variables, the conditions are
checked in the interpolation cycle.
Perform when the action or the technology cycle is satisfied.
Action started if the condition is fulfilled, e.g. assign
variable.
A program is called as action if the condition is fulfilled.
WHENEVER $A_IN[1]==1
whenever input 1 is set
Motion synchronous actions
10.1 Structure, basic information
DO $A_OUT[1] = 1
then set output 1
10-3