Siemens SINUMERIK 840Di Function Manual page 554

Detailed Description
2.4 Program test
Test options
The following test options are described below:
• Program execution without setpoint outputs
• Program execution in singleblock mode
• Program execution with dry run feedrate
• Skip part program blocks
• Block search with or without calculation.
2.4.1 Program execution without setpoint outputs
Functionality
In the "Program test" status, a part program is executed without the output of axis or spindle
setpoints.
The part program can be started and executed during the active program test function
using interface signal:
DB21, ... DBX7.1 (NC Start)
i.e., using auxiliary function outputs, wait times, G-function outputs, etc.
Safety functions such as software limit switches and working area limits remain valid.
No axis motion
The only difference compared to normal program operation is that an internal axis disable is
set for all axes (including spindles). The machine axes do not move, the actual values are
generated internally from the setpoints that are not output. The programmed velocities
remain unchanged. This means that the position and velocity information on the operator
interface is exactly the same as that output during normal part program execution.
The position control is not interrupted when this function is active, so the axes do not have to
be referenced when the function is switched off.
Usage and Handling
Usage
The user can use this to check the programmed axis positions and auxiliary function outputs
of a part program. This program simulation can also be used as an extended syntax check.
2-18
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0