The infeed distance to be managed by the FB_Infeed POU must consist of a series of belts arranged one after another. The products are transferred onto the first belt of the infeed distance and conveyed via the belts to the last belt. The belts are numbered in the order in which the products pass them.
The FB_Infeed POU distinguishes between two belt types:
oSeries
Belts of type Series are driven by a servo motor that is controlled by the FB_Infeed POU. Belts of type Series can perform feed forward motions and correction motions.
oMonitoring
Belts of type Monitoring are not controlled by FB_Infeed. Only their motions as well as the motions of the products on this belt are monitored. Since the belt is not controlled by the FB_Infeed POU, no feed forward motion or correction motion can be started on this belt. A belt of type Monitoring can also be driven by a frequency converter.
Belts of type Monitoring are used to monitor motions of the products also on belts of the infeed distance that are not to be used for correction motions. This information usually is very helpful to create an algorithm.
