Axon Synapse HDR07 기술 매뉴얼 - 페이지 13

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Introduction

What is the Goal of

an event?

HDR07 Events

Announcements

Signal_Input

PLL_State

What information is

available in an

event?

7 Events Menu

An event is a special message that is generated on the card

asynchronously. This means that it is not the response to a request

to the card, but a spontaneous message.

The goal of events is to inform the environment about a changing

condition on the card. A message may be broadcast to mark the

change in status. The message is volatile and cannot be retrieved

from the system after it has been broadcast. There are several

means by which the message can be filtered.

The events reported by the HDR07 are as follows;

Announcements is not an event. This item is only used for

switching the announcement of status changes on/off. 0=off, other

=on.

Beware: this does NOT influence the announcement from the

cards within the frame or the announcing of the Frame Status

object. Use the 'Settings' menu items 'Broadcasts' and

'Forwarding' for Announcement propagation on the network.

Signal_Input can be selected between 0 .. 255. 0= no event,

1..255 is the priority setting.

PLL_State can be selected between 0 .. 255. 0= no event,

1..255 is the priority setting.

The message consists of the following items;

1) A message string to show what has happened in text, for

example: "INP_LOSS", "REF_LOSS", "INP_RETURN".

2) A tag that also shows what happens, but with a predefined

number: e.g. 1 (= loss of input), 2 (= loss of reference), 129(=

1+128 = return of input). For a list of these predefined tags see

the table on the next page.

3) A priority that marks the importance of an event. This value is

defined by the user and can have any value between 1 and

255, or 0 when disabled.

4) A slot number of the source of this event.