Diagnose IMServerX and ASOSHeartbeat Failures in PCS 7 V8.1 SP1

When PCS 7 V8.1 SP1 reports “IMServerX has stopped working” and “ASOSHeartbeat has stopped working” while OS Runtime activates, the messages alone do not identify a cause. Capture the corresponding Windows Application log events, then use the version-matched PCS 7 diagnostics to check OS services and configured WinCC channel connections. The available report contains no confirmed fix, so preserve the evidence and escalate if those checks do not reveal a documented correction.

Applies to

The reported environment is SIMATIC PCS 7 V8.1 SP1, with an OS server reporting “IMServerX has stopped working” and “ASOSHeartbeat has stopped working” during runtime activation. The discussion provides no Windows event details, logs, architecture, or confirmed resolution. These messages alone are insufficient to identify a root cause.

What the messages establish

They establish that Windows reported failures for two named processes during OS runtime activation. The thread's only reply points to another support discussion and recommends opening a Siemens service request if that discussion does not resolve the issue. Neither the ticket nor the Siemens diagnostic manual reviewed here defines these exact process failures as a particular network, compilation, archive, or configuration defect.

Collect evidence before changing the project

Record the exact PCS 7/WinCC versions and updates from the affected OS server and note whether the system is single-station, client/server, or redundant.
Capture the full Windows error text and the corresponding Application log events in Event Viewer. Record timestamps, faulting application/module details and event identifiers exactly as displayed; do not infer a cause from the process names alone.
Preserve the relevant PCS 7/WinCC diagnostics and project/runtime context for Siemens support. Redact customer names, addresses, credentials and plant-identifying details before sharing externally.
Note whether the Automation Station is reachable from the engineering station and whether the OS runtime reports a communication fault. These are separate observations; one does not prove the other.

Check OS and communication diagnostics

For PCS 7 V8.1 SP1, Siemens' Service Support and Diagnostics manual lists Windows Event Viewer for investigating drivers, logs and services. It also documents WinCC Channel Diagnostics for the status of configured channels and their connections to SIMATIC stations, and Set PC Station network-module testing for supported Softnet IE configurations. Use these tools only for the corresponding configured component and record their actual results.

If channel diagnostics show an AS connection problem, investigate the configured connection and applicable network/PC-station diagnostics under the site's PCS 7 procedure. If the channel is established while the process errors recur, preserve both findings for escalation; the ticket does not establish that the process failures are caused by AS communication.

Escalation

The source thread does not contain a repair procedure or final resolution. If the recorded Windows and PCS 7 diagnostics do not identify a documented, version-applicable correction, open a Siemens support request for PCS 7 V8.1 SP1. Include sanitized event details, diagnostic logs, runtime topology, exact installed software versions, and the sequence that triggers the two messages. Do not apply generic compile, download, archive migration, firewall or registry fixes without evidence that they apply.

Verification

After any diagnosis-driven correction approved for the system, confirm that OS runtime activates without repeating the same Windows process failures, inspect the relevant Event Viewer records, and check the documented WinCC channel connection status to the intended AS. Verify process visibility and control only through the site's established safe operational checks. The article does not claim that any procedure was tested on a system.

Limitations and Operational Precautions

The ticket reports only the two message texts and PCS 7 V8.1 SP1. It does not include screenshots, Windows event data, topology, reproduction details, or resolution. No authoritative source located in focused research maps these exact names to a single cause. Siemens diagnostic guidance supports collection and component-level checks, not a specific fix for this incident. Avoid restarts or configuration/download changes on a live process without site authorization and an operational plan.

Engineer FAQ

Do these messages prove an AS-OS network fault? No. The ticket gives no channel or network diagnostic results, and the reviewed manual does not map these process failures to a network cause.

What should be checked first? Preserve the complete Windows Application log events and establish the installed software versions and runtime topology.

Which PCS 7 V8.1 SP1 tool checks configured WinCC connections? Siemens' service manual lists WinCC Channel Diagnostics for the status of configured channels and their connections to SIMATIC stations.

Should I compile or download the OS project? The available evidence does not justify doing so. First determine what the logs and configuration diagnostics actually show.

When should I contact Siemens support? If the exact event data and applicable diagnostics do not identify a documented correction, escalate with sanitized logs and configuration context.

Technical References

SIMATIC PCS 7 Service Support and Diagnostics V8.1 SP1, Service Manual, 03/2015, A5E32786000-AB — opened and reviewed; see §8.4 for Event Viewer and PC diagnostics, and §8.13 for WinCC Channel Diagnostics.

PCS 7 OS runtime diagnostics

PCS 7 WinCC channel diagnostics

Diagnose IMServerX and ASOSHeartbeat Failures in PCS 7 V8.1 SP1