Pn: Cyclic Connection Interrupted; Pn: Maximum Number Of Controllers Exceeded; Pn: Second Controller Missing; Pn: System Redundancy Switchover Running - Siemens SINAMICS S210 Operating Instructions Manual

Faults and alarms
13.2 List of faults and alarms
A01980

PN: cyclic connection interrupted

Message value: %1
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The cyclic connection to the PROFINET controller is interrupted.
See also: r8936 (PN cyclic connection state)
Remedy: Establish the PROFINET connection and activate the PROFINET controller in the cyclic mode.
A01981

PN: Maximum number of controllers exceeded

Message value: Info. 1: %1, info. 2: %2
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: A controller attempts to establish a connection to the drive, and as a consequence exceeds the permitted number of
PROFINET connections.
The alarm disappears automatically after approx. 30 seconds.
Alarm value (r2124, interpret hexadecimal):
yyyyxxxx hex: yyyy = info. 1, xxxx = info. 2
Info 1 = 0: number of RT connections exceeded
Info 1 > 0: number of IRT connections exceeded
Info 2: permitted number of connections
Remedy: Check the configuration of the PROFINET controllers.
A01982

PN: second controller missing

Message value: -
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: Connections to two PROFINET controllers are expected. However, only the connection to a PROFINET controller is
present.
- there is only one connection to the F controller.
- system redundancy is activated.
Remedy: Check the configuration of the PROFINET controllers.
A01983

PN: system redundancy switchover running

Message value: -
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The "PROFINET system redundancy" function is configured and the connection between the primary control and drive
device is interrupted. The backup controller assumes control of the drive device.
Remedy: Not necessary.
The alarm is automatically withdrawn after switchover has been successfully completed.
A01989 PN: internal cyclic data transfer error
Message value: %1
Drive object: All objects
Reaction: NONE
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SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA