MODBUS Driver
- Last UpdatedFeb 11, 2026
- 1 minute read
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Driver: Plant SCADA MODBUS Driver Version: 3.03.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 MODBUS Driver supports serial communication with many I/O devices (including the Modicon 484, 584, 884, and 984 programmable controllers, and Moore Products IOExpress).
Note: The MODBUS and MODBUSA drivers are closely related. They only differ from each other in the data framing technique used: MODBUS is RTU-based, while MODBUSA is ASCII-based. You should determine which your system requires and make sure you proceed using the appropriate driver.
The maximum request length for the MODBUS driver is 2000 bits.
Note: It is recommended that you use the MODBUS 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.