Siemens SINUMERIK 840Di Function Manual page 221

2.4.2 Activation
2.4.2.1 Parameterization
Key statement
Parameters for the acceleration margin are assigned for each channel by means of machine
datum:
MD20610 $MC_ADD_MOVE_ACCEL_RESERVE
(acceleration margin for overlaid motions)
2.4.3 Programming
Key statement
The function is not programmable.
2.5 Path-acceleration limitation (channel-specific)
2.5
2.5.1 Detailed description
2.5.1.1 General information
Key statement
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
Acceleration (B2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.5 Path-acceleration limitation (channel-specific)
Detailed Description
2-9