Troubleshoot SIMATIC BATCH OS Controls on a PCS 7 V9.1 Web Client
When SIMATIC BATCH OS Controls work on a WinCC OS client but fail in a PCS 7 V9.1 web client, first verify that the web client has the required SIMATIC BATCH plug-in. Siemens' PCS 7 V9.1 SP1 Web Option manual describes installing the SIMATIC BATCH OS Controls plug-in for web operation. The reported “No such interface supported” message is not mapped to a unique cause in that manual, so plug-in presence is a documented prerequisite to check, not a confirmed diagnosis for that exact error.
Table of Contents
- Applies To
- Why the OS client and web client can differ
- Check the required web plug-in
- Do not confuse the BATCH plug-ins
- Install and start the web process display
- Verify the result
- If the error remains
- Version and change-control limits
- Verification
- Limitations and Operational Precautions
- Engineer FAQ
- Technical References
- Related Articles
- Related Tags
Applies To
This guidance is scoped to PCS 7 V9.1, the version reported in the discussion, and Siemens' PCS 7 V9.1 SP1 Web Option for OS manual. The manual applies to WebNavigator clients using SIMATIC BATCH OS Controls. The source does not identify the exact PCS 7 service pack/update or client configuration.
Why the OS client and web client can differ
A control functioning in WinCC Runtime on an OS client does not establish that its web-client components are installed. Siemens documents a separate web plug-in installation procedure and specifically identifies the SIMATIC BATCH OS Controls plug-in as necessary for operating the BATCH OS Controls from the web client. The manual does not state that this prerequisite explains every occurrence of the reported SBS/IRTCW interface error.
Check the required web plug-in
On the WebNavigator server, open the WebNavigator download area for the project and confirm that the SIMATIC BATCH OS Controls plug-in is available to the client. On each affected web client, check that the plug-in installation completed. Follow the version-matched manual's plug-in workflow and prerequisites; its procedure includes installing the base WinCC/PCS 7 plug-ins before add-on plug-ins, then the SIMATIC BATCH OS Controls component. Use the installer and sequence supplied for the installed release.
Do not confuse the BATCH plug-ins
The V9.1 SP1 manual lists SIMATIC BATCH WinCC Options separately from SIMATIC BATCH OS Controls. It associates WinCC Options with BATCH unit and EPH faceplates, while SIMATIC BATCH OS Controls enable the BATCH OS controls on the web client. Installing one should not be treated as proof that the other is present when the project uses both types of objects.
Install and start the web process display
After installing the required plug-ins, follow the manual's client installation and startup sequence. Siemens specifies starting Web process control after all plug-ins have been installed and the Web server OS is in Runtime. The precise prompts and browser behavior can depend on the installed WebNavigator/PCS 7 release; use the manual matching the deployed version.
Verify the result
Repeat the original test from the affected web client and check the exact controls used in the project: SIMATIC BATCH OS Master, Monitor and Batch Creation. Confirm that the controls render and respond through the intended web session. The V9.1 SP1 manual states that BATCH OS Controls can be operated on the Web client with standard user logon and that operations can be logged and reported in a BATCH report. A successful OS-client test alone does not verify web-client operation.
If the error remains
Record the exact PCS 7 and WebNavigator versions, web client type, plug-in versions and installation result, and whether all relevant batch controls fail or only one. Confirm the project's web-server plug-in download is associated with the intended project and that the tested client received the required plug-in. The Siemens manual does not explicitly associate “The component SIMATIC Batch Server communications adapter (SBS/IRTCW) triggered an error: No such interface supported” with a particular missing plug-in or repair action. Escalate with that evidence if the documented prerequisite is met and the error persists.
Version and change-control limits
The supporting procedure is from the PCS 7 V9.1 SP1 Web Option for OS manual. It should not be assumed identical for other releases. Installing client plug-ins changes the web-client software environment; apply the release-matched vendor procedure and site change controls. No server repair, project conversion, download, or production restart is established as necessary by the reported symptoms.
Verification
Check the installed release against the manual, confirm the SIMATIC BATCH OS Controls plug-in is installed on the affected web client, and retest the same project objects in web Runtime. Record whether the error clears and whether operator actions behave as intended. If it does not, preserve the exact dialog text and plug-in/version evidence for Siemens support; the available documentation does not prove a single cause for this COM/interface error.
Limitations and Operational Precautions
The source reports PCS 7 V9.1 and says the manual procedure had already been followed, but it does not provide evidence of the exact plug-in installation state, exact V9.1 service pack/update, or a final resolution. The article therefore identifies the documented prerequisite and a bounded verification path; it does not claim this will resolve the specific interface error. Avoid changing a running system outside approved site change controls.
Engineer FAQ
Does working on the OS client prove the BATCH controls are correctly installed for web access? No. Siemens documents web-client plug-ins separately; verify the required SIMATIC BATCH OS Controls plug-in on the Web client.
Which plug-in name should I look for? The V9.1 SP1 Web Option manual lists “SIMATIC BATCH OS Controls” among the web plug-ins and describes the SIMATIC BATCH plug-in as enabling BATCH OS Controls on a web client.
Is SIMATIC BATCH WinCC Options the same plug-in? The manual lists it separately. It associates WinCC Options with BATCH unit/EPH faceplates and identifies OS Controls for operating BATCH OS Controls.
Does the “No such interface supported” text prove the plug-in is missing? No. The cited manual establishes the plug-in prerequisite but does not map this exact error message to one cause.
What should I collect if installation does not resolve the issue? Record exact PCS 7/WebNavigator versions, client type, plug-in versions and install state, affected controls, and the complete error text.
Technical References
- Siemens, Process Control System PCS 7: Web Option for OS (V9.1 SP1), §§10.4–10.6, plug-in download, installation and SIMATIC BATCH OS Controls: https://cache.industry.siemens.com/dl/files/408/109805408/att_1089707/v1/ps7web_b_en-US.pdf