Node State events - Johnson Controls - LIT-1201668 - System Integration - LonWorks Integration - 12.0

LonWorks Network Integration with Network Engines and LCS Technical Bulletin

Brand
Johnson Controls
Product name
LonWorks Integration
Document type
Technical Bulletin
Document number
LIT-1201668
Version
12.0
Revision date
2022-08-30
Product status
Active
Language
English

The Alarm Event State attribute defines how Node State events are handled. Node State events are separate from device ONLINE or OFFLINE events. The Node State is in a Configured Online, Configured Soft Offline, or Configured Bypass state.

Figure 1. Alarm Event State

When the Alarm Event State attribute is set to TRUE, any off-normal state (Soft Offline or Bypass) causes a Node State is not normal event, and is logged. In addition, the status of the LON device transitions to an Unreliable state. The Diagnostics Tab of the LON device logs the unreliable condition in the Node State attribute. When the LON device returns to a normal Node State, the event is logged in addition to setting the status of the LON device to Normal.

Figure 2. Alarm Event Logged in Event Viewer

Figure 3. Node State in Diagnostic Tab

When the Alarm Event State attribute is set to FALSE, all off-normal conditions are suppressed including events. The status of the LON device remains Normal, but the Diagnostics Tab of the device logs the unreliable condition in the Node State attribute.