Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Operation
6.7 Communication according to PROFIdrive
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
319
Controllers, supervisor and drive units
Table 6- 12 Properties of the Controller, Supervisor, and Drive Unit
Properties Controller Supervisor Drive unit
As bus node Active Passive
Sending messages Permitted without external request Only possible on request by the
controller
Receiving messages Possible without any restrictions Only receive and acknowledge permitted
Note
Consistent naming conventions
For reasons of consistency, the terms "device", "controller", and "supervisor" are used below.
The terms "slave" and "master" are only applied in the PROFIBUS chapter and are still use
there.
Communication types
4 communication types are defined in the PROFIdrive profile:
● Cyclic data exchange via a cyclic data channel
Motion control systems require cyclically updated data in operation for open-loop and
closed-loop control tasks. This data must be sent to the drive units in the form of
setpoints or transmitted from the drive units in the form of actual values, via the
communications system. Transfer of this data is usually time-critical.
● Acyclic data exchange via an acyclic data channel
An acyclic parameter channel for exchanging parameters between the control/supervisor
and drive units is additionally available. Access to this data is not time-critical.
● Alarm channel
Alarms are output on an event-driven basis, and show the occurrence and expiry of error
states.
● Isochronous mode
–
Cyclic data exchange in a fixed time grid
– The controller and device are synchronized.
Interface IF1 and IF2
The Control Unit can communicate via two different interfaces (IF1 and IF2).
Table 6- 13 Properties of IF1 and IF2
IF1 IF2
PROFIdrive and SIEMENS telegram x -
Free telegram x x