BACnet Protocol Engine Attributes - Metasys - LIT-12011964 - Software Application - System Configuration Tool - 16.0

SCT: System Configuration Tool Help

Brand
Metasys
Product name
System Configuration Tool
Document type
User Guide
Document number
LIT-12011964
Version
16.0
Revision date
2023-10-02
Language
English

This object contains attributes common to many Metasys system objects. These common attributes are described in the Common Object Attributes section. This section includes attributes of the Focus/Configuration tab and the Diagnostics tab. See the Object and Feature Tabs section for information on the attributes that appear on the other tabs of this object (for example, the Hardware and Options tab appear on point objects).

Table 1. BACnet Protocol Engine Object Attributes - Focus/Configuration Tab

Attribute Name

Notes

Initial Value

Description

Alarm State

Offline

Indicates that the object transitioned into alarm or unreliable conditions. This attribute appears only in the Snapshot Focus tab.

Enabled

C,W

True

If True, allows integration between the Metasys system and the IP field controller.

Graphic Alias

C,W

 

Indicates a portion of the graphic’s item reference, up to and including the name of the folder containing this object or the controller containing this point.

Poll Delay

C,W

120

Specifies the time in milliseconds between BACnet object polls for attribute values. The polls start at the time specified in the Periodic Update attribute. As the Poll Delay increases, the overall time in the Execution Time attribute increases. It is useful to specify a Poll Delay on sites where the rate of reading the remote objects causes too high a burden on the Metasys network or third-party device.

Recommended setting: high sensitivity: 20 seconds; medium sensitivity: 60 seconds; low sensitivity: 120 seconds (default).

Table 2. BACnet Protocol Engine Attributes - Diagnostic Tab

Attribute Name

Notes

Description

Abort Rcv

 

Contains the number of abort messages received. Aborts occur in response to a number of situations, such as communication or memory problems.

Abort Tx

  Contains the number of abort messages sent.

Ack Rcv

  Contains the number of complex acknowledgment messages received.

Ack Tx

  Contains the number of complex acknowledgment messages sent.

Allocated Record Count

  Indicates the number of state machines that have been allocated.

Clear Statistics

W

Clears the statistics for the integrated BACnet Protocol network.

Conf Req Rcv

  Contains the number of confirmed request messages received.

Conf Req Tx

  Contains the number of confirmed request messages sent.

Error Rcv

 

Contains the number of error messages received. An example of an error is an attempt to rite to a read-only attribute.

Error Tx

  Contains the number of error messages sent.

Latch Statistics

W

Updates the displayed statistics with the current values.

Local Abort Tx

 

Contains the number of application layer abort messages generated locally (for example, messages that used up

all allowed retries and did not get an acknowledge from the remote device).

Net Messages Rcv

  Contains the number of messages received at the network layer.

Net Messages Tx

  Contains the number of messages transmitted at the network layer.

Net Rejects Rcv

  Contains the number of reject messages received at the network layer.

Net Routed Messages

 

Contains the number of messages routed through the network layer from one network (for example, IP) to another (for example, MS/TP).

Net Routes Busy

  Contains the number of messages not sent because the network route is busy or not initialized.

Net Unknown Message Rcv

  Contains the number of unknown messages received at the network layer.

Net Unknown Routes

  Contains the number of messages not sent due to unknown route information.

Peak Pending Queue Count

  Indicates the largest number of client requests that were queued for transmission.

Peak Unknown Queue Count

  Indicates the largest number of client requests the unknown queue contained at one time.

Pending Queue Count

  Indicates the number of client requests currently queued for transmission.

Rcv Messages Discarded

 

Indicates the number of messages received from the network that were not processed due to lack of resources or because there were too many requests for the Metasys Engine to process.

Rcv Message Rate

  Indicates the number of messages received in the last minute.

Rcv Record Count

 

Indicates the number of active state machines currently in use for receipt of requests from other BACnet devices (that is, the number of requests being processed at this moment).

Record Count

  Indicates the number of active state machines holding information on pending messages.

Reject Rcv

 

Contains the number of reject messages received. Rejects occur in response to a variety of communication problems much like aborts and errors.

Reject Tx

  Contains the number of reject messages sent.

Req Retries Tx

  Contains the number of confirmed request messages re-sent due to timeout.

Reset Date

  Indicates the date of the last Clear Statistic command.

Reset Time

  Indicates the time of the last Clear Statistic command.

Seg Ack Rcv

  Contains the number of segmented complex acknowledgement messages received.

Seg Ack Tx

  Contains the number of segmented complex acknowledgement messages sent.

Seg Conf Req Rcv

  Contains the number of segmented confirmed request messages received.

Seg Conf Req Tx

  Contains the number of segmented confirmed request messages sent.

Seg Retries Tx

  Contains the number of segmented confirmed request messages re-sent due to timeout.

Segment Ack Rcv

  Contains the number of segment acknowledgment messages received.

Segment Ack Tx

  Contains the number of segment acknowledgment messages sent.

Segment Rcv

  Contains the number of segment messages received.

Segment Tx

  Contains the number of segment messages sent.

Simple Ack Rcv

  Contains the number of simple acknowledgment messages received.

Simple Ack Tx

  Contains the number of simple acknowledgment messages sent.

Transaction Timeouts

 

Indicates the number of MS/TP Postpone messages sent due to a late reply to a received Confirmed Request message (that is, this device’s applications could not process the request before a low-level MS/TP answer was required).

Transmits Per Minute

  Displays the calculated number of transmissions per minute.

Tx Messages Discarded

 

Indicates the number of client requests aborted due to lack of resources. Usually, this situation occurs due to memory issues in the controller.

Tx Record Count

  Indicates the number of active state machines currently in use for transmission of client requests.

Unconfirmed Rcv

  Contains the number of unconfirmed messages received.

Unconfirmed Tx

  Contains the number of unconfirmed messages sent.

Unknown Queue Count

  Indicates the number of current client requests that need network address resolution.