Modbus Ethernet PLC 4.3.2 release notes
- Last UpdatedApr 29, 2026
- 3 minute read
The PI Interface for Modbus Ethernet PLC is designed to read data from a PLC on a periodic or event basis, and to send output data (commands to the PLC) on an event basis. The ModbusE interface attempts to optimize scanning performance by grouping input tags with the same scan rate, PLC destination node and function code.
Only Modbus communication with an ethernet device is supported.
PI Interface for Modbus Ethernet PLC 4.3.2.12, released January 2025, is a maintenance release addressing minor bug fixes. Version 4.3.2.12 uses version 4.7.3.1 of the UniInt framework.
For more information on product features and functions, including system requirements and installation/uninstallation instructions, refer to the PI Interface for Modbus Ethernet PLC guide.
The latest information about the 4.3.2.12 release is available online on the AVEVA Documentation Portal.
New features and enhancements
There are no new features or enhancements in this release.
Resolved issues
This section lists items resolved in this release:
|
Work Items |
Description |
|---|---|
|
49395 |
/cn parameter's upper bound was updated from 4 to 1000 to match the interface-allowed maximum. |
|
111359 |
Update shared file logging behavior (A part of UniInt upgrade). |
|
114074 |
Added properly signed PIInterfaceLib.dll for ModbusE configuration utility. |
|
126726 |
ModbusE | Enhance OMF Health Messaging by linking interface to UniInt Framework 4.7.3. |
Known Issues
There are no known issues for this release.
Security information and guidance
We are committed to releasing secure products. This section is intended to provide relevant security-related information to guide your installation or upgrade decision.
We proactively disclose aggregate information about the number and severity of security vulnerabilities addressed in each release. The tables below provide an overview of security issues addressed and their relative severity based on standard scoring.
Overview of new vulnerabilities - Fixed or Mitigated
This section is intended to provide relevant security-related information to guide your installation or upgrade decision. AVEVA is proactively disclosing aggregate information about the number and severity of PI Interface for Modbus Ethernet PLC security vulnerabilities that are fixed in this release.
For this release of PI Interface for Modbus Ethernet PLC, the following vulnerabilities have been fixed or mitigated.
Security vulnerabilities fixed in PI Interface for Modbus Ethernet PLC 4.3.2 release
|
Severity category |
CVSS base score range |
Number of vulnerabilities fixed |
|---|---|---|
|
Critical |
9.0 - 10 |
0 |
|
High |
7.0 - 8.9 |
0 |
|
Medium |
4.0 - 6.9 |
0 |
|
Low |
0 - 3.9 |
0 |
Vulnerability mitigations in PI Interface for Modbus Ethernet PLC 4.3.2 release
This table lists the known vulnerabilities along with their mitigation in this product.
|
Component |
Version |
CVE or Reference |
CVSS |
Mitigation |
|---|---|---|---|---|
|
SQLite |
3.43.0 |
BDSA-2023-3555 |
7.4 |
Vulnerable code is not in execution path. The session extension of SQLite is not utilized. |
|
SQLite |
3.43.0 |
BDSA-2023-3627 |
6.3 |
Vulnerable code is not in execution path. JSON parsing capability of SQLite is not utilized. |
Microsoft Software Security Defenses
In addition to finding and fixing security bugs within the PI Interface for Modbus Ethernet PLC, it is equally critical that we leverage security defenses provided by the Microsoft Visual C++ compiler that builds it and the Microsoft Windows operating system that runs it.
Over the past decade, Microsoft has continually added new defenses and improved existing defenses with successive versions of the compiler and the operating system. To learn more about many of these key defenses, review the Mitigating Software Vulnerabilities white paper from Microsoft.
Distribution Kit Files
|
Product |
Software Version |
|---|---|
|
PI Interface for Modbus Ethernet PLC - Read-Only* |
4.3.2.12 |
|
PI Interface for Modbus Ethernet PLC** |
4.3.2.12 |
|
PI Interface for Modbus Ethernet PLC - ICU Control |
4.3.2.12 |
|
Microsoft Visual C++ 2019 Redistributable (x86 and x64) |
14.21.27702 |
|
OSIsoft MS Runtime Redistributables |
3.1.9 |
|
OSIsoft MS VB Runtime Redistributables |
1.0.1 |
|
PI Buffer Subsystem 2018 SP2 Patch 2 |
4.9.0.37 |
|
PI GenericNames DLL |
1.3.5.25 |
|
PI Interface Configuration Utility |
1.5.1.10 |
|
PI Network Subsystem Support (PINS)*** |
3.4.450.165 |
|
PI Software Development Kit 2018 SP1 Patch 2 (PI SDK) (x86 and x64)**** |
1.4.7.620 |
|
PI Spt DLL |
1.2.4.0 |
* - The PI Interface for Modbus Ethernet PLC - Read-Only component is included only in the read-only setup kit.
** - The PI Interface for Modbus Ethernet PLC component is included only in the read-write setup kit.
*** - The PI Network Subsystem Support (PINS) component is not displayed on the installation welcome screen if the PI Data Archive is installed already.
****- PI SDK 2018 (x86) contains PI API, version 1.6.9.68.