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Triggering a Blink Warning on a SPAK in a BACnet Environment

This article will cover how to trigger a blink warning. Usually this would be used to alert occupants that the lights will soon turn off on schedule, giving them time to override the lights if need be. The Switchpak it self has a blink warning that can be programmed directly on the panel, however this does not work if panels are being scheduled via BACnet. 

This article will be based around the YABE (Yet Another Bacnet Explorer) program.

Download the program here

After downloading launch the program, you will be given the option to add a device Click the green plus button and a new window will open, enter in your BACnet information (The client should have this information for us. Otherwise, on a SPAK, the BACnet ID should be displayed on the Start screen. To find the BACnet information on a Synergy Cabinet, search for the network information screen. On a MLX cabinet follow this path: Start> Setting Up> Environment > Network. The BACnet information will be displayed here) 

EX of Filled out Search Screen:

Since we are using BACnet/IP over UDP I have adjusted my settings to match the IP settings of a SPAK. Click the Add button. You will see your device added to the "Devices" pane in the YABE window

You can now select your different inputs and outputs from the "Address Space" pane. Please reference your PIC statement to determine what input and outputs affect (SPAK PIC and MLX PIC attached) 

Select a point, our example shows Analog Output 1 (AO-1). On the Right side of the screen we see the properties of that output

There are several different fields we can change, for this article we will focus on Present Value. Changing the Present Value will send a command to the output, a value of 100 acts as a "ON" command, a value of 0 acts as a "OFF" command, see the PIC for your system to determine what other values may do. If we want to send a BLINK command to a output, first the output must already be ON (value = 100). Send a value of 131.

This will cause the specified output to blink and begin its automated count down (Default is 5 minutes). 

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