Trunk Utilities guidelines and tips:
- Trunk Utilities is not supported on controllers that use background transfer.
- The Trunk Utilities feature is disabled for IP controllers.
- The transfer of CAFs to controllers in Trunk Utilities is disabled for unlicensed devices. This restriction affects the Transfer CAF and Attributes to a Controller and Transfer CAFs to Multiple Controllers options.
- Create a template for the trunk you are working on before you perform multiple transfers to devices or upgrades.
- Do not use Trunk Utilities with wireless devices when you perform Main and Boot Code upgrades.
- When you perform multiple transfers to devices, we recommend that you use an FC Bus connection point and disconnect the MS/TP trunk from the supervisory controller.
- When you have access to a supervisory device, we recommend that you first disable all devices on the trunk.
Note: We strongly advise against using an NxE Passthru connection to transfer CAFs to multiple controllers due to potential communication loss during the process.
- All controllers with an application version prior to or equal to the current tool release mode are upgraded. Controllers with an application version later than the current tool release mode are not upgraded, and a Version Mismatch message appears.
- Check the general performance of the field bus before performing multiple transfers to devices according to the following guidelines:
Low performance has a COV rate greater than 500 messages per minute or a token loop time greater than 3,000 ms.
Note: If you have a low performing trunk, do not use trunk utilities for Main Code and Boot Code upgrades because the transfer may fail. If you experience a transfer failure, see Recovering a Trunk from a Multiple Upgrade or Transfer to Device Failure.
- Medium performance has a COV rate greater than 400 messages per minute and less than or equal to 500 messages per minute, or a token loop time greater than 2,000 ms and less than or equal to 3,000 ms.
- High performance has a COV rate less than or equal to 400 messages per minute and a token loop time of less than or equal to 2,000 ms.
- Low performance has a COV rate greater than 500 messages per minute or a token loop time greater than 3,000 ms.
For more information on SA bus performance, see SA Bus Diagnostics.