Rockwell-automation 1756-SYNCH ControlLogix SynchLink Module User Manu Instrukcja Użytkownika Pobierz pdf (Strona 41)

Publication 1756-UM521C-EN-P - July 2004

SynchLink Module Features 3-13

The Electronic Keying feature is configured on the following screen.

Requested Packet Interval

The Requested Packet Interval (RPI) is a configurable parameter that

defines when the module multicasts its data onto the local chassis

backplane. In the SynchLink module, though, the RPI’s role is dictated

by the data the SynchLink transfers.

Axis Data

The RPI does not have an effect on produced or consumed axis data.

In a distributed motion control application, the coarse planner update

establishes the timing of the axis data updates from the producing

controller to the consuming 1756-SYNCH module in the master

chassis. Likewise, in the slave chassis, the RPI parameter does not

affect the delivery of the axis data to the consuming processor. This

data is produced at the coarse update rate established in the master

chassis.

Electronic Keying

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Rockwell-automation 1756-SYNCH ControlLogix SynchLink Module User Manu Instrukcja Użytkownika Strona 41