Technical data

Technology functions
CPU 317T: Technology Functions
A5E00251798-03
6-101
6.3 Technology functions - Synchronism
6.3.1 FB 420 MC_GearIn - Start gear synchronization
Valid for firmware version V3.1.x of the integrated technology
Purpose
• The "MC_GearIn" technology function starts basic gear synchronization
between a leading axis and a following axis.
• Use the dynamic parameters Velocity, Jerk, Acceleration, Deceleration to
define the dynamic response when synchronizing the following axis.
• The gear ratio is defined as the ratio between two integer numbers at the input
parameter (nominator / denominator.)
• Synchronism can be defined relative to the start position (random position
values upon reaching synchronism) or absolute.
• The gear ratio can be changed when the system is RUN by outputting a new
MC_GearIn command. This operation does not require a stop of the master or
following axis. Transitions are executed according to the specified acceleration
or deceleration values.
• The function can be started when the leading axis is at a standstill, or when it is
in motion.
Applicable to
• Synchronization axes
Requirements
• The leading axis is configured for operation as external encoder, or as
positioning or synchronization axis.
• The following axis is configured for operation as synchronized axis.
• The leading axis is set as available control value at the base synchronization
object of the following axis.
• The following axis is enabled for position-controlled operation
• No MC_Stop command is busy at the following axis