Why a PCS 7 Collective Display Is Gray in Runtime

A gray PCS 7 collective (group) display can indicate that the OS group-display hierarchy has not been calculated or saved for the affected picture hierarchy. In PCS 7 Operator Station V8.0 SP1, Siemens documents recalculating the entire group-display hierarchy when saving it for the first time, and using Save Delta after later changes. The symptom alone does not prove that this is the cause; check the Picture Tree Manager configuration and runtime message state.

How group displays depend on the Picture Tree

The group display object and its picture link are only part of the configuration. The OS also uses a group-display hierarchy to propagate relevant message states through the picture hierarchy. Siemens' Operator Station V8.0 SP1 manual states that group-display messages may not appear in the overview area or process pictures until the hierarchy is saved in Picture Tree Manager with the group-display hierarchy calculated.

Recalculate the hierarchy

For the first calculation, the V8.0 SP1 manual specifies enabling Options > Recalculate entire group display hierarchy when saving before saving the Picture Tree. After hierarchy changes, it documents Options > Save Delta to update the group-display hierarchy.

The same manual says a download or delta load recalculates the group-display hierarchy regardless of these save options. If the overview area still shows no messages during process mode, the manual directs users to close and reopen WinCC Explorer.

Check derived picture-tree data

If the picture hierarchy appears incomplete, confirm whether the project is designed to derive it from the SIMATIC Manager plant hierarchy. In PCS 7 OS V8.0 SP1, the option Derive picture hierarchy from the plant hierarchy transfers the picture hierarchy when the OS is compiled. Siemens warns that recompiling with this option enabled can overwrite direct changes made in Picture Tree Manager.

The cited manual says only hierarchy folders containing pictures appear in Picture Tree Manager and that the top hierarchy folder must also contain a picture for lower folders to appear. Confirm these requirements against the project design before changing hierarchy data.

Verification

After saving or performing the approved OS update, check whether the expected message state is displayed in the affected collective display, process picture or overview area. Review the Picture Tree hierarchy and compile/download logs. If no message is associated with the relevant group, a gray or inactive display may not be resolved by recalculating the hierarchy alone; verify the actual message and group configuration.

Limitations and Operational Precautions

The report gives no PCS 7 version, OS hierarchy settings, or evidence about messages associated with the group display. The steps above are documented for PCS 7 OS V8.0 SP1; verify exact menu names and applicability in the installed release. OS compilation, download, or hierarchy changes can affect operator-station behavior. Follow site change control and use backups and an approved test/rollback plan. Do not enable plant-hierarchy derivation casually if the Picture Tree has intentional manual changes.

Engineer FAQ

Why can a linked group display still be gray? The Picture Tree group-display hierarchy may be missing or stale, or the affected message/group configuration may not produce a state. The symptom alone does not identify the root cause.

What is the first calculation option in V8.0 SP1? Select Options > Recalculate entire group display hierarchy when saving in Picture Tree Manager, then save.

How are subsequent changes applied? The manual specifies Options > Save Delta for updating the group-display hierarchy after changes.

Could incomplete plant-hierarchy derivation matter? Yes. When configured to derive the Picture Tree from the plant hierarchy, compiling the OS transfers that hierarchy; check required pictures and the setting.

Does recalculation prove the group has an active message? No. Verify the associated messages and actual runtime state independently.

Technical References

Siemens, Operator Station (V8.0 SP1), Configuration Manual, 03/2013, A5E02779465-04, §5.3.6.2, “How to Define the Transfer of the Picture Hierarchy,” pp. 58–59; §9.8.1–9.8.2, Picture Tree Manager and group-display hierarchy, pp. 192–193: https://cache.industry.siemens.com/dl/files/026/68157026/att_109711/v1/ps7phosb_en-US.pdf