Siemens SINAMICS G130 - Page 218

Operation
6.6 Communication according to PROFIdrive
Inverter chassis units
218 Operating Instructions, 07/2016, A5E00331449A
Properties of the controller, supervisor and drive units
Table 6- 6 Properties of the Controller, Supervisor, and Drive Unit
Properties
Controller
Supervisor
Drive unit
As bus node
Active
Passive
Sending messages Permitted without external re-
quest
Only possible on request by the
controller
Receiving messages Possible without any restrictions Only receive and acknowledge
permitted
Communication services
Four communication services 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
Interface IF1 and IF2
The Control Unit can communicate via two different interfaces (IF1 and IF2).
Table 6- 7 Properties of IF1 and IF2
IF1
IF2
PROFIdrive and SIEMENS
telegram
Yes No
Free telegram
Yes
Yes
Isochronous mode
Yes
Yes
Drive object types
All
All
Can be used for PROFINET IO, PROFIBUS DP,
SINAMICS Link, PN Gate,
Ethernet/IP
PROFINET IO, PROFIBUS DP,
CANopen, SINAMICS Link,
PN Gate, Ethernet/IP
Cyclic operation
Yes
Yes
PROFIsafe
Yes
Yes