Settings
10.8 Retrigger reference point
FM 352 electronic cam controller
120 Operating Instructions, 05/2011, A5E01071724-03
10.8 Retrigger reference point
Definition
The "Retrigger reference point" setting can be used to synchronize the axis as a reaction to
a recurring external event.
The setting remains active until you deactivate it.
Requirements
● You are using an incremental encoder or an initiator.
● The external event may represent the zero mark signal of an incremental encoder or
reference point switch at input I2.
Programming steps
1. Set the value for the reference point coordinate at the parameter DB.
2. Set the type of "retrigger reference point" at the parameter DB.
Options:
– Only the zero mark of the encoder is evaluated (RETR_TYPE = 7).
– Only the reference point switch is evaluated (RETR_TYPE = 6).
– Evaluation of the zero mark signal
in positive direction: evaluation of the first positive edge of the zero mark after passing
the reference point switch in positive direction (RETR_TYPE = 0).
in negative direction: evaluation of the first negative edge of the zero mark signal after
passing the reference point switch in negative direction (RETR_TYPE = 1).
3. Write and enable machine data.
4. Set the function switch in the channel DB.
To Next Page
Loading...
