Eaton Power Xpert PXR 10, Руководство пользователя

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10 Industrial Ethernet Communication Adapter Modules (ECAM)
10.1 EtherNet/IP
100
PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
10.1.4.4 Event logs
A trip event provides historical values for the data objects at the time the
event has occurred. The trip unit classifies the event information in order to
be able to provide a different quantity for each type.
The EtherNet/IP communication can only access the historical summary, as
well as the trip and event data.
Table 52: Event classification - EtherNet/IP
A single trip may be registered under multiple event types. For example, a
protective trip may be recorded in the summary log (
￫ table 53) as well as
in the trip log ( ￫ table 54).
Event logs information is accessed via object: 0xA2, with attribute: 5 and
instances according to tables 53, 54 and 55.
If the event type selection is written to instance 316, the first and last event
ID can be retrieved from instances 317 and 318, respectively, in order to
determine the range of events that have been stored for the selected event
type. Instance 319 is a R/W register for selecting the ID of the event in
question. If the requested event has been recorded by the device, instances
320 and 321 will supply both the ID of the previous event and that of the next
event.
If the device has not recorded the event in question, the exception code can
be queried by requesting the Modbus communication status of the ECAM
from the controller via a dedicated industrial protocol object (via object: 0xA2,
with attribute: 5 and instance: 410).
The date and time at which the requested event occurred are read in log 322,
with the same date and time description as in
￫ table 57, page 104.
This value corresponds to the time at which the historical event occurred.
Log 323 indicates the data content of the selected event type. This is a
constant value for the three event types supported by the module.
The event data also provide a valid bit for each data object, starting with
instance 324. If bit 0 is set to 1, the initial data will be valid for the current trip
type, bit 1 for the second data object, bit 2 for the third data object, and so
forth.
The number of valid bit registers is calculated as:
(number of data objects - 1) / 16
Event type Quantity of
numbers stored Description of the event log
Summary 200 ￫ table 53
Tripping 10 ￫ table 54
Alarms 10 ￫ table 54 and ￫ table 55
￫
For more information on the exception codes, see
￫ section 10.1.4.11, “Exception codes”, page 107.