Siemens SINUMERIK 840D

Motion synchronous actions
10.1 Structure, basic information
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
10-7
Possible conditions
• Comparison of main run variables (analog/digital inputs/outputs, etc.)
• Boolean gating of comparison results
• Computation of real-time expressions
• Time/distance from beginning of block
• Distance from block end
• Measured values, measurement results
• Servo values
• Velocities, axis status
10.1.4 Actions
Function
In synchronized actions, you can program one or more actions. All actions programmed in a
block are active in the same interpolation cycle.
Command elements
DO Initiates an action or a technology cycle when the
condition is satisfied.
Action Action started if the condition is fulfilled, e.g.,
assign variable, activate axis coupling, set NCK
outputs, output M, S and H functions, specify the
programmed G code, ...
The G codes can be programmed in synchronized actions for the actions/technology cycles.
The G code may specify a different G code from the condition for all actions in the block and
technology cycles. If technology cycles are contained in the action part, the G code remains
modally active for all actions until the next G code, even after the technology cycle has been
completed.
Only one G code of the G code group (G70, G71, G700, G710) may be programmed per
action section.
Example of a synchronized action with two actions
WHEN $AA_IM[Y] >= 35.7 DO M135
$AC_PARAM=50
;If the condition is fulfilled,
;M135 is output to the PLC and the
;override is set to 50%.