FCU - Firmware - Optimizing Firmware Upload Times in iSMA-B-FCU Controllers via BACnet MS/TP

Introduction

Uploading firmware to multiple iSMA-B-FCU controllers over a BACnet MS/TP network can be time-consuming, with each unit potentially taking up minutes to do so, resulting in prolonged update processes. Efficiently managing these updates is crucial for minimizing downtime and ensuring system reliability.

Good Practice

To optimize the firmware upload process for iSMA-B-FCU controllers, follow these best practices:

1. Adjust Baud Rate Settings:

   • It is important to set the baud rate correctly for your network configuration when updating firmware. The default setting is typically 38400, but changing this can impact the speed of the update process. Lower baud rates result in slower update times, while higher rates can speed up the process. The maximum baud rate supported is usually 115200. Refer to your network’s technical specifications or experiment with different settings to determine the optimal baud rate for your firmware update.

2. Disable Automatic Backups:

   • During the firmware update process, disabling automatic backups can significantly reduce the time taken per unit. This can be adjusted in the FCU Updater settings when creating a new project.
     

     

3. Network Configuration Check:

   • Verify the network setup, particularly the end-of-line biasing and termination. Ensure that a 120-ohm resistor is correctly placed at the end of the line. Incorrect network terminations can lead to signal reflections and errors, slowing down the entire process.

4. Reduce Network Traffic:

   • Examine the polling frequency and the number of points being polled from each device. High traffic due to frequent and numerous polling can congest the network, leading to slower response times. Adjust the polling settings to balance timely data collection with network performance.

5. Monitor and Optimize the Network Environment:

   • Keep an eye on the network's busy time and overall performance. Environmental disturbances, such as electrical interference, can also impact network efficiency. Ensure that the physical setup of the network minimizes exposure to such disturbances.