Siemens SINUMERIK 840D sl Function Manual page 236

Functions
2.5 Path-acceleration limitation (channel-specific)
2.5 Path-acceleration limitation (channel-specific)
2.5.1 Detailed Description
2.5.1.1 General Information
General Information
To enable a flexible response to the machining situations concerned, setting data can be
used to limit the path acceleration calculated during preprocessing for specific channels:
SD42500 $SC_SD_MAX_PATH_ACCEL (maximum path acceleration)
The value specified in the setting data is only taken into account if it is smaller than the path
acceleration calculated during preprocessing.
The limitation must be activated for specific channels using setting data:
SD42502 $SC_IS_SD_MAX_PATH_ACCEL = TRUE
2.5.2 Activation
2.5.2.1 Parameterization
Parameterization
Parameterization is carried out for specific channels using setting data:
SD42500 $SC_SD_MAX_PATH_ACCEL (maximum path acceleration)
SD42502 $SC_IS_SD_MAX_PATH_ACCEL (activation of path-acceleration limitation)
2.5.3 Programming
2.5.3.1 Limit value
Syntax
$SC_SD_MAX_PATH_ACCEL =
18
limit value
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Basic logic functions: Acceleration (B2)