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2 G Code
2 - 24 NJ/NY-series G code Instructions Reference Manual (O031)
G500, G501 Multi-block Accelera-
tion/Deceleration Rate
This command does not have any parameters to set.
When this command is enabled in Continuous-path Mode, the Controller reads the path ahead and
searches for a location where the limitation of position, velocity or acceleration may be exceeded.
When the location is found, it decelerates the path to control within the limit range. This change applies
retroactively to the path previously calculated, and is completed prior to actual execution.
G500 enables, and G501 disables. G500 must be used simultaneously with Continuous-path Mode
(G64). If G500 is used together with the Exact Stop Mode (G61), it operates in the Exact Stop Mode.
If the multi-block acceleration/deceleration rate is disabled, accelerate to the feedrate in the first block,
and decelerate in the last block. For this reason, if the specified travel distance is small in accelera-
tion/deceleration operation, the operation is such that the maximum acceleration rate is exceeded.
When the multi-block acceleration/deceleration rate is enabled, accelerate or decelerate to the feedrate
across multiple blocks so that the maximum acceleration rate of each motor is not exceeded.
If the multi-block acceleration/deceleration rate is disabled (G501), the following restrictions apply.
• The maximum acceleration or deceleration (CNC motor setting) is made invalid.
• The Back Trace cannot be used.
Modal/Non-modal Modal
Modal group 23 Multi-block Acceleration/Deceleration Rate
Instruction format G500, G501
Relevant G codes G01, G02, G03, G64
Parameters
Function