Efficient Networks Siemens Sinamics S120 - Manual (Page 436)

Communication PROFIBUS DP/PROFINET IO
10.2 Communication via PROFIBUS DP
Drive Functions
436
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
For diagnostic purposes, there are the diagnostic parameters r2075 ("PROFIBUS
diagnostics, receive telegram offset PZD") and r2076 ("PROFIBUS diagnostics, transmit
telegram offset PZD"). The parameter r2074 ("PROFIBUS diagnostics, receive bus address
PZD") displays the DP address of the setpoint source of the respective PZD.
r2074 and r2075 enable the source of a slave-to-slave communication relationship to be
verified in the Subscriber.
Note
The Subscribers do not monitor the existence of an isochronous Publisher sign of life.
Alarms and error messages with PROFIBUS slave-to-slave communication
An alarm A1945 signals that a publisher of a device (CU320) is missing or has failed. Any
interruption to the Publisher is also reported by an error F1946 at the affected DO. A failure
of the Publisher will therefore only affect the respective DOs.
A1945 PROFIBUS: Connection of device to Publisher x interrupted
Reaction: NONE
Acknowledgment: NONE
Cause: The cyclic data transfer between this PROFIBUS device and a slave-to-slave
communication publisher was not established or was interrupted.
Examples:
Bus connection interrupted
Publisher failed
New startup of DP master
Remedy: Check Publisher and bus connections to Publisher, to DP master and between DP master
and Publisher.
F1946 (A) PROFIBUS: Connection of drive object to Publisher x interrupted
Reaction: OFF1 (NONE; OFF2; OFF3)
Acknowledgment: IMMEDIATELY
Cause: The cyclic data transfer between this drive object and a slave-to-slave communication
Publisher was not established or was interrupted.
Examples:
Bus connection interrupted
Publisher failed
New startup of DP master
Remedy: Check Publisher and bus connections to Publisher, to DP master and between DP master
and Publisher.