SBUS Driver
- Last UpdatedFeb 11, 2026
- 1 minute read
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Driver: Plant SCADA SBUS Driver Version: 3.04.xx.xxx Check the Drivers tab on the Products page at the AVEVA Knowledge & Support Center for information about driver updates and new driver pack releases. |
The SBUS driver supports SERIAL communication with the SAIA PCD PLCs. The protocol can use three different transmission methods:
1) Parity changing method
2) Break mode transmission
3) Data mode transmission.
The transmission method is determined by the [SBUS]SendBreak parameter. Refer to SBUS Driver Parameters for information on how to set the transmission method.
The maximum request length for the SBUS protocol is 16 bits.
Note: It is recommended that you use the SBUS driver with a version of Plant SCADA that is fully supported in accordance with AVEVA's Software Support Lifecycle and Retirement Policy. The driver will work with Citect SCADA 7.20 or later (or a later version of Plant SCADA), however it will not be fully tested or supported on these earlier versions. Search the AVEVA Support Site Technology Matrix to determine the support status for your current version of Plant SCADA.
Hints and Tips
To setup the proper communication modes for SBUS with PCDs, you may need to use the utilities provided by SAIA to alter the firmware settings of the PCD devices. Refer to the topic titled Software Setup for software and firmware version required for SBUS Data Mode.