Bert BACnet interface - Metasys - LIT-12013511 - Supervisory Device - BERT Smart Plugs - 10.1

Bert Plug Load Control and Metasys Integration Guide

Brand
Metasys
Product name
BERT Smart Plugs
Document type
Integration Guide
Technical Bulletin
Document number
LIT-12013511
Version
10.1
Revision date
2020-02-21
Language
English

The Bert Connect Gateway includes a BACnet service that creates a BACnet device for each Bert device. Each Bert device has a consistent set of BACnet objects that are used to monitor and control the Bert device. This allows for easier monitoring and control with less programming logic in Metasys.

See the following table for the BACnet object list of Bert devices.

Table 1. Bert BACnet point descriptions

Point name

Description

Relay On Off State

The current state of the Bert device, if the outlet or circuit is on/powered/energized or not.

Commanded Relay State

(writeable)

The last command issued to the Bert device to turn the outlet or circuit on or off.

Power Measured

The real-time power measured in mW.

Voltage Measured

The real-time voltage measured in V.

Current Measured

The real-time current measured in mA.

Power Threshold

(writeable)

The max power at which the Bert device is allowed to be commanded. This is a safety for devices like compressors that should not be powered down when it is running at 100%. For example, if the device should not be powered down until it enters a lower wattage or sleep mode, it is recommended that the power threshold value should be set to 5,000 mW. At this threshold, the device is only controlled if it gets below 5W and it won’t be controlled if it is still using 100W, for example.

Hardware Switch Disable

(writeable)

Each Bert device has a push button that doubles as a green LED status indicator. You can enable or disable the button functionality using BACnet. This particular object enables or disables the ability of this button to power on the Bert device when holding the button for 4 seconds. This setting defaults to Inactive which means the hardware switch is enabled to power on the Bert device when holding the button for 4 seconds.

Toggle via Switch Enable

(writeable)

This object enables or disables the button to toggle power On or Off. This setting defaults to Inactive which means the button cannot be used to toggle the Bert device OFF.

Temperature Measured

If the temperature sensor in the Bert device is calibrated, this value shows the current temperature reading.

Calibration Temperature

(writeable)

Used to calibrate the temperature sensor of the Bert device.

Temperature Measurement Enabled

Boolean value that tells if the temperature sensor of the Bert device has been calibrated.

RSSI Signal Strength

The Wi-Fi signal strength reading.

From the Bert Connect Gateway, you should configure the BACnet properties to ensure Bert BACnet communications is successful and that Bert devices do not interfere with existing devices on the BACnet network. These settings are described in the following table.

Table 2. Bert BACnet settings

Setting

Description

Local Network Number

The BACnet network number that communicates with the NAE and the rest of the BACnet network. This value must match the BACnet network number set in the NAE you are integrating to.

The default value is 1. The default network number of an NAE is 1001. Change one or both of these value so they match. Check with the site’s BACnet network expert to identify the correct value.

Local Device ID

The BACnet device ID for this Bert Connect Gateway. Set this Device ID to a value that does not conflict with other BACnet device IDs on the network or communication issues may occur.

The default value is 533 which may or may not be safe on the site’s network. Check with the site’s BACnet network expert to be sure.

Virtual Network Number

The BACnet network number that communicates internally with the Bert device network. This Bert Connect Gateway acts as a router to this virtual network. The Virtual Network Number must be unique to all the other BACnet network numbers in use across the network, or sporadic communication issues may occur.

Note: If there is more than one Bert Connect Gateway configured on the same network, the Virtual Network Numbers must be unique.

The default value is 47 which may or may not be unique on the site’s network. It is recommended that you check this with the site’s BACnet network expert.

Reliability Count

This value is used internally by the Bert Connect Gateway to determine when a communication gap with a Bert device has occurred. The BACnet points from that Bert device should be marked as Unreliable.

The default value is 4 which represents a countdown.

If communication with the Bert device is good, this value is 4. The value decrements by 1 every 30 seconds if communication with a Bert device has not occurred. When the value reaches 0, the points from that Bert device are marked Unreliable.

BACnet UDP Port

The UDP port restricts BACnet communications to devices that have the same UDP port setting. This value must match the BACnet UDP port number set in the NAE you are integrating with or communication between devices can not occur.

The default value of 47808 is a common value on most BACnet networks. However, make sure that you check this with the site’s BACnet network expert.

The Bert BACnet gateway service must be started and remain running on the server. This enables the Bert devices to be accessible using standard BACnet communications.