Siemens SIMATIC Power Line Booster Operating Instructions Manual page 105

Table of Contents

● "Gap Avg": Average time between two frames to one slave.

Typical: "Poll Avg" • times number of stations in the segment + "Hello Phase" (Page 72).

In a completely full segment, the "Gap Avg" should be shorter than the configured

PROFINET update time.

● "Gap Path Max": Maximum time between two frames to one vehicle (Power Line Double

Slider applications (PDS); for single slider applications (PSS) identical to "Gap Avg").

This value must always be less than the configured PROFINET/PROFIsafe monitoring

time (Page 73).

● "Unexpected blacklist": Number of unexpected connection aborts to a slave. The master

memorizes the order in which the slaves arrive. This means the master knows which

slave is at the end of the line and will leave the segment next. If there is a connection

abort to a slave that is not at the end of the line according to the arrival sequence, this is

evaluated as an "Unexpected blacklist". This value is only plausible when all vehicles in

the segment have changed completely once after a restart of the master and there is no

switch in the segment.

You can also switch to the expert view which shows you these additional table columns:

● "Poll Sequence": Position in which the slave is polled by the master.

● "Poll Min": Minimum polling time to a slave.

● "Gap Min": Minimum time between two frames to one slave.

● "Gap Path Min": Minimum time between two frames to one vehicle (PDS applications).

● "Blacklist": Number of connection aborts to a slave.

● "Whitelist": Number of established connections to a slave.

The counters for the timeouts indicate how often a slave has not responded to a query from

a master. When a vehicle leaves the segment, the timeouts are incremented until the defined

"Blacklist Timer" has been reached. This behavior is normal and expected. An evaluation,

therefore, is only meaningful for vehicles within a segment.

● "1 TO" Number of: 1st timeout: Slave has not responded to a poll frame once. First

timeouts are normal during regular operation to a certain extent.

● "2 TO" Number of: 2nd timeout: Slave has not responded to a poll frame twice in a row.

More than two timeouts should not occur during regular operation.

● "3 TO" Number of: 3rd timeout: Slave has not responded to a poll frame three times in a

row.

● "4 TO" Number of: 4th timeout: Slave has not responded to a poll frame four times in a

row.

● "5+ TO" Number of: 5th timeouts and following timeouts: Slave has not responded to a

poll frame at least five times in a row.