Can PCS 7 Industry Library V9.1 VlvDiv and VlvDsL Work with APL?
Yes. Siemens' PCS 7 Industry Library V9.1 Readme describes the Industry Library as an expansion of the PCS 7 Advanced Process Library (APL), and the V9.1 block list includes both VlvDiv and VlvDsL. Siemens requires the Industry Library version to match the APL version used by the project. That supports using these IL valve blocks in an APL-based PCS 7 V9.1 project, but it does not guarantee every library or service-pack combination or rule out project-specific integration issues.
Table of Contents
- Applies To
- How the Industry Library and APL Fit Together
- Version Compatibility
- Configure VlvDiv and VlvDsL in a Matched Project
- Interpreting Reports of APL and IL Issues
- What the Documentation Does and Does Not Establish
- Verification
- Limitations and Operational Precautions
- Engineer FAQ
- Technical References
- Related Articles
- Related Tags
Applies To
The original engineering context is PCS 7 V9.1 and Industry Library valve blocks VlvDiv and VlvDsL. Siemens' delivery Readme for PCS 7 Industry Library V9.1 (11/2021) lists VlvDiv as FB1127 and VlvDsL as FB1103, both block version 5.5. It describes the library as an APL expansion and requires its version to match the APL version used in the project.
How the Industry Library and APL Fit Together
The Industry Library supplies additional PCS 7 blocks, including VlvDiv and VlvDsL, intended to be used alongside APL blocks. Siemens documentation says IL blocks for PCS 7 can only be used in connection with APL blocks. This describes an extension relationship; it is not a blanket promise that any IL, APL, PCS 7, faceplate, or OS combination is interchangeable.
Version Compatibility
The later Readme is not evidence that every detail applies to the original V9.1 installation. Use the documentation shipped for the project's exact version.
Configure VlvDiv and VlvDsL in a Matched Project
- Record the PCS 7, APL, and Industry Library versions installed on the Engineering Station and used by the project.
- Check the matching IL Readme for the supported PCS 7/APL combination and the VlvDiv or VlvDsL block entry.
- Use the version-matched IL library when inserting or updating the blocks. Siemens' Readme describes copying blocks into the AS project and performing a block type import when updating the project.
- Review the block's installed help and interface before connecting signals, interlocks, feedback, or faceplates. The V9.1 block list indicates interface and code changes for these blocks compared with the preceding library revision, so update assumptions from an older revision only after reviewing the release notes.
- Compile and validate the project using the procedures for that PCS 7 release, then check the generated OS faceplates and the configured valve behavior in a controlled test environment.
Interpreting Reports of APL and IL Issues
A statement that “APL and IL work perfectly together” is broader than the Siemens compatibility evidence. The V9.1 Readme establishes a supported extension relationship and a version-matching requirement. It does not substantiate every reported incompatibility or every claim that particular blocks were fixed in a certain service pack. Diagnose a specific issue from the actual PCS 7/APL/IL versions, block versions, compile messages, faceplate release, and project configuration rather than generalizing from an unspecified customer case.
What the Documentation Does and Does Not Establish
The 11/2021 V9.1 Readme explicitly names VlvDiv and VlvDsL and states the library's relationship to APL. A 07/2024 V9.1 SP1 Update 1 Readme adds later version and software requirements and later block changes. Neither document establishes that every service-pack pairing is supported or that no integration defects can occur. The source's reported customer concern does not identify an error, project revision, or reproducible failure, so it cannot be confirmed or dismissed from that report alone.
Verification
Before engineering or updating the project, verify the exact PCS 7, APL, and IL release combination against its Readme. Confirm the CFC block type/version and interface after type import; review compile results and OS faceplate version; and exercise each relevant valve mode, command, feedback, and interlock in a test setup. For a reported issue, preserve the exact diagnostic message and affected block versions so it can be compared with the matching Siemens release notes.
Limitations and Operational Precautions
This conclusion applies to the documented PCS 7 Industry Library V9.1 context, not every older or newer release. The reported issue lacks the affected versions and symptoms needed for root-cause diagnosis. A library update can include block interface and code changes; assess the project impact and follow the update instructions for the exact release before compiling or downloading to a running system.
Engineer FAQ
The V9.1 documentation confirms VlvDiv and VlvDsL are included in the PCS 7 Industry Library and that the library extends APL. Compatibility depends on matching the IL version with the project's APL version and following the applicable release instructions.
Technical References
- Siemens, PCS 7 Industry Library Readme V9.1 (Online), 11/2021, A5E51591867-AA, §§4.2, 5, 6.2–6.4. Opened; lists VlvDiv and VlvDsL, describes IL as an APL expansion, and states the version matching requirement: https://cache.industry.siemens.com/dl/files/069/109805069/att_1092465/v1/IL-Readme-Online_en-US.pdf
- Siemens, PCS 7 Industry Library Readme V9.1 SP1 Update 1 (Online), 07/2024, A5E52150170-AC, §§5.2–5.4, 6.3. Opened; documents later block changes and requirements for later V9.1 combinations: https://cache.industry.siemens.com/dl/files/242/109812242/att_1315072/v1/SIMATIC_PCS_7_Industry_Library_V9_1_SP1_Upd1_Readme.pdf