How to Show or Hide CEMAT Block Parameters in CFC

In CEMAT, parameters hidden from the CFC block interface can be made visible at the function-block level with the S7_visible attribute or for a particular instance in CFC, according to Siemens' CEMAT V7 Engineering manual. That setting concerns parameter visibility in CFC; it does not, by itself, establish whether a parameter appears in a WinCC runtime faceplate. Confirm the installed CEMAT version and whether the requested display is the CFC interface or the OS faceplate.

Clarify Which Display Must Change

“Visible in the CFC chart” and “displayed in the runtime faceplate” are separate engineering questions. The available CEMAT V7 documentation describes invisible module parameters and changing their S7_visible attribute at the function block or a CFC instance. The source question does not identify the CEMAT release, SINAMICS block type, parameter name or whether the target is the CFC chart or runtime faceplate. Do not assume the CFC visibility property controls a faceplate object.

CFC Parameter Visibility in the Documented CEMAT V7 Scope

Siemens' Engineering Cemat V7 manual says CEMAT modules expose only commonly used parameters by default and that hidden parameters can be made visible by changing S7_visible to true at the function block or for an individual instance in CFC. The manual warns that a standard update loses attribute changes made at the function-block level, while the instances keep their original settings. This guidance is specific to the documented CEMAT V7 behavior; verify it against the library version installed in the project.

Procedure: Expose a Parameter in the CFC Interface

Identify the exact SINAMICS/CEMAT function block and parameter. Check the block's object description or library documentation to confirm that the parameter exists and is intended to be exposed.
If the parameter should appear for only one block instance, open the instance's object properties in CFC and set the visibility for that instance as supported by its CEMAT version.
If the parameter should be visible for all new instances of the function-block type, modify the function-block attribute S7_visible as described in the matching CEMAT documentation. This library-level change affects the block type and may be lost during a standard update; preserve the change and reapply it only through the project's controlled library-maintenance process.
Save the engineering changes and confirm that the parameter appears in the CFC interface at the intended scope. Follow the project's normal compile and download procedure only if the changed parameter or block configuration requires it.

Runtime Faceplate Visibility Is a Separate Configuration

If the desired result is to show or hide a field on a WinCC runtime faceplate, first identify the exact faceplate, parameter/tag connection and CEMAT version. The cited CEMAT manual also documents faceplate picture properties separately from CFC interface visibility. The ticket contains no faceplate name, object property, tag mapping or runtime customization details, so it does not support a reproducible procedure for adding or hiding a SINAMICS value in runtime.

Verification

For a CFC-interface change, confirm the parameter appears on the intended block type or instance and that the setting survives saving and reopening the project. For a runtime-faceplate change, verify the actual faceplate field and its tag connection in the relevant OS project and runtime after the appropriate OS engineering procedure. Do not treat a visible CFC pin as proof that a faceplate field is connected or displayed.

Limitations and Operational Precautions

The source identifies a SINAMICS converter and a CEMAT CFC block but does not provide the exact block, parameter, CEMAT version or runtime faceplate. Siemens' available reference is CEMAT V7; its S7_visible instructions must not be generalized to an unspecified library release. No manufacturer-supported runtime-faceplate customization procedure for this specific block can be established from the available information.

Engineer FAQ

What does S7_visible control in the cited CEMAT manual? It controls whether CEMAT module parameters are exposed as visible in the CFC interface, at block-type or instance scope as documented for CEMAT V7.

Does setting S7_visible prove the value will appear in a WinCC faceplate? No. The CFC interface and runtime faceplate are separate displays; faceplate configuration and tag connections must be checked separately.

Can one CFC instance be changed without changing every instance? The CEMAT V7 manual describes making parameters visible in CFC for each instance as an alternative to changing the function-block attribute.

What is the impact of changing the function-block attribute? The CEMAT V7 manual warns that a standard update loses function-block attribute changes; it says instances retain their original settings.

Can the CEMAT V7 procedure be applied to any CEMAT release? No. Confirm the installed library and matching version documentation before applying it.

What details are needed to answer a faceplate visibility question precisely? Identify the CEMAT release, exact SINAMICS/CEMAT block and parameter, faceplate name and whether the target is the CFC chart, faceplate engineering picture or runtime.

Will exposing a CFC parameter automatically create a faceplate field? The cited documentation does not establish that behavior. A runtime field and its tag mapping need to be configured and verified independently.

Should the whole block type be changed to expose one instance parameter? Use instance-level visibility when only one instance needs the parameter, if the installed CEMAT version supports it; preserve library-level modifications under project change control.

What should be checked before exposing an engineering parameter to operators? Confirm its meaning, permitted use, range and access expectations in the matching block documentation. The source does not identify a parameter or its safe operating limits.

What does the original report establish about the requested outcome? It asks how to show or hide a parameter in a SINAMICS/CEMAT faceplate, but contains no answer or confirmed implementation.

Technical References

Siemens, Engineering Cemat V7, section 6, “Invisible Module Parameters,” pp. 6-14–6-15 (CFC parameter visibility and update limitation): https://cache.industry.siemens.com/dl/files/757/28286757/att_23473/v1/Engineering_en.pdf
Siemens, Engineering Cemat V7, OS Engineering section, “Property Styles” (faceplate/symbol picture properties are documented separately from CFC module parameter visibility): https://cache.industry.siemens.com/dl/files/757/28286757/att_23473/v1/Engineering_en.pdf

Related Tags

CEMAT
CFC
SINAMICS
WinCC faceplates

How to Show or Hide CEMAT Block Parameters in CFC