Resolving OPC Scout V10 Missing in SIMATIC NET V18

Problem Overview: OPC Scout V10 Removed from SIMATIC NET V18

Engineers and commissioning specialists who historically launched OPC Scout V10 from the Siemens SIMATIC NET PC Software start menu (Start > Siemens Automation > SIMATIC NET > OPC Scout) find that the entry no longer exists after installing SIMATIC NET PC Software V18 (released as part of the TIA Portal V18 release wave, build chain 18.0.x).

The user-visible symptom is:

• The shortcut "SIMATIC NET - OPC Scout V10.0" is absent from the Windows start menu.
• Searching the installation directory C:\Program Files\Siemens\Automation\SIMATIC_NET\opc2\bins or opc\bins returns no OPCScoutV10.exe binary.
• The package is not listed in Windows Apps & Features under "Siemens SIMATIC NET" installed components.

This is not a license, install-corruption, or Windows-rights issue. OPC Scout V10 was deliberately removed from the V18 product image. The component is no longer developed, and Siemens no longer publishes it as a standalone download on the Siemens Industry Online Support portal.

Root Cause: Product Lifecycle Decision in V18

OPC Scout V10 was the long-standing DCOM-based OPC DA / OPC XML-DA test client bundled with every SIMATIC NET PC Software release from V6.x through V17. Starting with V18:

• Siemens removed OPC Scout V10 from the product scope of SIMATIC NET PC Software.
• The component is classified as end-of-development / end-of-life; no security or functional updates are planned.
• Siemens recommends third-party OPC UA test clients (most notably UA Expert from Unified Automation) for all new commissioning and diagnostic work.

This decision aligns with the industry migration from DCOM-bound OPC Classic (DA, HDA, AE) to the platform-independent OPC UA standard (IEC 62541). The S7-1200 G2, S7-1500, ET 200SP CPUs, WinCC Unified, and the newest SIMATIC S7-PLCSIM variants all expose OPC UA Server interfaces rather than DCOM DA servers, making a UA-capable test client the de-facto requirement.

Prerequisites Before Selecting a Replacement Client

Identify which OPC standard your target system exposes so the replacement tool matches the protocol:

Verify the V18 base install is correct first. Download and install the latest V18 update from the official entry: Download of SIMATIC NET PC Software V18 - ID 109815655. Confirm the installed version with Start > Siemens Automation > SIMATIC NET > Station Configuration Editor: the version field must read SIMATIC NET PC Software V18.x.

Replacement OPC Test Clients (Free / Supported)

Three categories of replacement tool cover the full scope of what OPC Scout V10 used to do.

1. UA Expert (Unified Automation) — Recommended for OPC UA

UA Expert is a full-featured OPC UA test client with a graphical address space browser, monitored-item subscription view, and method-call support. Free download; commercial use allowed.

Minimum system requirements:

• Windows 10 64-bit (1809 or higher) or Windows 11
• .NET Desktop Runtime 6.0 / 8.0 (auto-installed by the UA Expert installer)
• ~200 MB disk, 4 GB RAM

2. OPC Expert (OPCExpert.com) — DA + UA in one Tool

OPC Expert is a free utility from Software Toolbox that supports both legacy OPC DA and OPC UA. This is the closest 1:1 functional drop-in for OPC Scout V10 because it can browse the DA namespace, add groups/items, and read/write synchronously and asynchronously.

Use OPC Expert when:

• You must talk to a SIMATIC NET OPC DA server on a PC station (legacy S7-300/S7-400 networks).
• The application code is mid-migration from DA to UA and you need both protocols visible side by side.
• You need to validate an OPC XML-DA endpoint exposed by older WinCC or PCS 7 versions.

3. Prosys OPC UA Browser (Legacy UA Test Client)

For users preferring a Java-based, install-free alternative, the Prosys OPC UA Browser at prosysopc.com serves the same role as UA Expert and supports the same discover/connect/browse/subscribe workflow.

Step-by-Step: Validate an S7-1500 OPC UA Server with UA Expert

Use this procedure to confirm the V18 PC software stack can reach the PLC, then drill into tag values.

1. Open TIA Portal V18 on the engineering station and confirm the S7-1500 project has the OPC UA Server option enabled: Properties > OPC UA > Server > "Activate OPC UA Server". Note the port (default 4840) and the security policies (None / Sign / SignAndEncrypt).
2. In the same dialog, generate the server certificate or enable auto-self-signed issuance, and add an user identity token (Anonymous, Username/Password, or Certificate).
3. Download the hardware configuration to the S7-1500 and verify the LED display shows "OPC UA RUN" (or check the diagnostic buffer for OPC UA start events).
4. On the V18 PC station, launch UA Expert.
5. Click Add Server. For manual entry, use the URL: opc.tcp://192.168.0.10:4840 (replace with the PLC's IP). For discovery, click Discover > Network; UA Expert will issue a UDP mDNS / LDS query and list all reachable OPC UA servers.
6. Select the discovered endpoint matching the security policy configured in step 1 and click Connect. If the server uses Sign or SignAndEncrypt, UA Expert prompts to trust the certificate the first time — accept and move the certificate to the Trusted store.
7. Authenticate with the user-token type defined in step 1. For Anonymous this is automatic. For Username/Password, enter the credential created in TIA Portal under Users & Roles.
8. The address space appears in the left pane. Navigate to Objects > Server > VendorServerInfo to confirm session-level read works.
9. Drag any tag DB variable (e.g. DB100.DBX0.0) onto the Data Access View. The current value appears within one publish interval (default 1000 ms).
10. To test writes, right-click the tag and select Write Value. Confirm via the PLC's online watch table.

Step-by-Step: Validate a SIMATIC NET OPC DA Server with OPC Expert

Use this when the application is a classic DCOM-based S7-300/S7-400 / PC station stack.

1. Confirm the SIMATIC NET PC station is configured in the Station Configuration Editor and that the OPC Server component is added and assigned to the correct interface (e.g. IE General for an Industrial Ethernet CP 1613/1623 or a soft CP).
2. From Start > Siemens Automation > SIMATIC NET > Commissioning > Commissioning Wizard, run a connectivity test against the S7 PLC to ensure the S7 connection is online.
3. Install OPC Expert. Run it elevated (right-click > Run as administrator) the first time so DCOM security can be configured automatically.
4. In OPC Expert click Server > Add. The DA server ProgID for SIMATIC NET is OPC.SimaticNET. For local DCOM use localhost as the host; for remote, use the PC station's hostname.
5. Browse the namespace. SIMATIC NET exposes a hierarchical tree: S7 > [Connection name] > CPUs > [CPU rack/slot] > DBs / Inputs / Outputs / Merkers / Timers / Counters.
6. Add a group with the desired update rate (50–1000 ms typical). Add items by dragging from the browse tree or using fully qualified access paths (e.g. S7:[S7 connection_1]DB100,BYTE0).
7. Verify read/write by setting Active on the group, then observe the items' Value, Quality, and Timestamp columns. Quality code 0x00000000 (Good) confirms end-to-end connectivity.

Verification Checklist

Troubleshooting Matrix

Security and Commissioning Notes

• Do not leave Anonymous authentication enabled on production systems. Anonymous is acceptable for the first connection test only; once reachability is confirmed, switch the S7-1500 OPC UA server to Username/Password or Certificate with role-based access control.
• Use the S7-1500 "Server certificate" generated by TIA Portal rather than the PLC's default self-signed cert when crossing network segments or when the SCADA is on a different trust store.
• Disable the OPC UA server's "None" security policy in production. Permit only Sign (Basic256Sha256) and SignAndEncrypt.
• DCOM-hardened networks should treat OPC Expert as a diagnostic tool only — running it as administrator with relaxed DCOM settings should be a temporary troubleshooting posture, not a permanent one.
• Document the replacement client in the project's commissioning checklist so future engineers do not waste hours searching the V18 DVD for OPC Scout V10.

FAQ