Technical data

Technology objects
CPU 317T: Technology Functions
3-48 A5E00251798-03
3.8.2 Synchronization - External encoders
The Technology CPU supports various homing modes. The reference position of
the external encoder can be set in FB 432 "MC_ExternalEncoder", at the Mode
input.
Homing with incremental encoders
• Direct homing (Mode = 2 and 4)
Setting the homing position; the value of the homing position coordinate is
assigned to the current encoder position.
• Passive homing / On-the-fly homing (Mode = 3 and 5)
The value of the homing position coordinate is assigned to the current encoder
position as the encoder is moving:
- when the zero mark is reached (default setting)
- when the BERO is reached (adjustment in the Expert list)
- when the next zero mark after BERO is reached (adjustment in the Expert
list)
The distance to go between the BERO and the zero mark can be monitored by
means of the zero mark monitoring function.
Synchronization of incremental encoders can be configured in the expert list.