Downloading Siemens STEP 7 V5.7 SP2 Trial: Setup Guide

Overview

Siemens SIMATIC STEP 7 V5.7 SP2 is the current maintenance release of the classic STEP 7 engineering environment used to program, commission, and diagnose the SIMATIC S7-300, S7-400, ET 200, WinAC, and C7 controller families. A 21-day trial is available to registered Siemens Industry Online Support users, providing full functional access (subject to trial-license activation) without purchasing a license key. This article covers the supported download path, the relationship to legacy STEP 7 V5.4 SP3 trial packages, MLFB numbers for ordering physical trial licenses, and the commissioning steps required to bring an offline engineering station up against live PLC hardware.

Engineers evaluating STEP 7 for the first time should note that classic STEP 7 (V5.x) is distinct from TIA Portal (V13..V20). The V5.x line is the only environment that natively programs the S7-300, S7-400, and the older C7-6xx controllers using the SIMATIC Manager shell. TIA Portal is the recommended path for S7-1200, S7-1500, and ET 200SP CPU firmware. If the target hardware is an S7-1500, this V5.7 trial is not applicable — install TIA Portal V20 trial instead.

Prerequisites

Before starting the download and trial activation, verify the following on the engineering workstation.

Item	Specification	Notes
OS	Windows 10 Pro/Enterprise (64-bit) or Windows Server 2016/2019/2022	STEP 7 V5.7 officially supports Windows 10 LTSC; LTSC 2019 / 2021 recommended for industrial use
CPU	x64 multi-core, 2 GHz or higher	Single-core is not officially supported
RAM	8 GB minimum, 16 GB recommended	Large S7-400 projects with many FB/FC instances need ≥16 GB
Free disk	≥12 GB for STEP 7 V5.7 SP2 + Service Pack	NTFS partition, separate OS disk recommended
Display	1024 × 768 minimum, 1920 × 1080 recommended	Multi-monitor supported via standard Windows scaling
Siemens Online Support account	Registered user with valid e-mail	Free registration; required to access download ID 109820861
Active Internet connection	Required for download and license activation	Offline trial activation via MLFB is a separate flow
User account	Local administrator rights during install	Required for PG/PC interface and AS-i driver setup

Do not install STEP 7 V5.7 side-by-side with TIA Portal on the same image unless both are explicitly co-installed through the TIA Portal setup. Parallel installation of STEP 7 V5.5/V5.6 and V5.7 on the same OS is supported, but mixed SP levels of the same major version can corrupt the S7WIN directory.

STEP 7 V5.x Version Map and Trial Availability

Classic STEP 7 V5.x has been updated several times since its original release. The supported trial packages differ by major version and country support policy.

Version	Latest Service Pack	Trial Download	Trial Period	Status
STEP 7 V5.4	SP3	Yes — see entry 26578452 (free, no license)	14 days	Legacy, replaced
STEP 7 V5.5	SP4 / SP4 HF7	Limited availability	14 days	Legacy
STEP 7 V5.6	SP2	Limited availability	14 days	Maintenance
STEP 7 V5.7	SP2	Yes — entry 109820861	21 days	Current

For most current evaluation work, use the V5.7 SP2 trial. The legacy V5.4 SP3 download is still useful when replicating an existing customer project that was last edited on a V5.4 PG.

Downloading the STEP 7 V5.7 SP2 Trial

Siemens distributes trial packages through the Industry Online Support portal. The exact entry for V5.7 SP2 is entry ID 109820861.

1. Open a browser and navigate to STEP 7 V5.7 SP2 Trial Download (Entry 109820861).
2. Sign in with a registered Siemens Industry Online Support account. If you do not have an account, click Register and complete the e-mail confirmation.
3. Locate the Downloads tab of the entry and select the STEP7_V57_SP2_Trial.exe image. The file is approximately 4.6 GB.
4. Use a download manager or browser resume. Verify the SHA-256 checksum shown on the entry's download tab matches the downloaded file before installing.
5. Save the installer to a local path with at least 12 GB of free space; the self-extracting archive requires temporary scratch space during unpack.

Notes on the legacy V5.4 SP3 path

The classic V5.4 SP3 package referenced in older documentation is entry ID 26578452 in the Siemens support portal. The full installer is provided as a free download with no license, and a 14-day automatic trial license is generated on first launch of the SIMATIC Manager. Engineers still maintaining very old S7-300 / S7-400 projects originally built on V5.4 should match the project environment to V5.4 SP3 to avoid offline block-time-stamp mismatches.

Installation Procedure

1. Right-click STEP7_V57_SP2_Trial.exe and choose Run as administrator. Accept the UAC prompt.
2. Select the destination language (English, German, French, Italian, Spanish, Chinese Simplified are bundled).
3. Choose Complete for a full STEP 7 + S7-PLCSIM + S7-Graph + S7-SCL + S7-CFC installation, or Custom to add only the optional packages you require. Recommended selections for an evaluation workstation:
   • STEP 7
   • S7-PLCSIM V5.4 (for offline simulation)
   • S7-GRAPH
   • S7-SCL
   • S7-CFC (only if you program S7-400 / PCS 7)
   • Driver: TCP/IP RFC1006; ISO-on-TCP; MPI/DP via PC Adapter USB
4. Wait for file copy. The setup logs are written to %TEMP%\Siemens\Setup.log and C:\Program Files\Siemens\Automation\STEP7\S7BIN\instlog.txt.
5. Reboot when prompted. STEP 7 installs a kernel-mode service (SIMATIC NET S7DOS Help) that must be initialized before the first project is opened.

Trial License Activation

STEP 7 enforces licensing at three layers: the SIMATIC Manager shell, the optional packages (PLCSIM, GRAPH, SCL, CFC), and the AS-i / PROFIBUS / PROFINET interface drivers. A trial license is generated automatically the first time the SIMATIC Manager is launched, valid for 21 calendar days from that first launch for V5.7 SP2 and 14 days for V5.4 SP3.

License Mechanism	V5.4 SP3	V5.7 SP2
Automatic trial on first launch	14 days	21 days
Re-armable after uninstall/reinstall	Yes, on the same PC	Yes, on the same PC; clock-rollback is detected
MLFB for ordered trial license (STEP 7 Professional)	6ES7 810-4CC08-0YA8	6ES7 810-4CC11-0YA8
MLFB for ordered trial license (STEP 7 base)	6ES7 810-4CC07-0YA8	6ES7 810-4CC10-0YA8

To check the current license state, open SIMATIC Manager → Options → License Management. The Automation License Manager window lists every license key on the system with its expiry date and the host fingerprint.

To request a physical trial license from Siemens (which provides 21 days, identical to the auto trial, but can be transferred between PCs and is preferred for offline or air-gapped sites), use the MLFB numbers shown above. The order entry pages are:

• Trial License STEP 7 Professional (Entry 29746989)
• Trial License STEP 7 base (Entry 22445076)

After receiving the license USB stick or the e-mailed license file, double-click the *.zip package containing the *.LIC key file and follow the Automation License Manager prompts to install the key locally.

STEP 7 Lite (study / training alternative)

STEP 7 Lite is a functionally restricted, freely distributable variant of STEP 7 V5.x intended for self-study and training. Restrictions compared with the full STEP 7:

• No support for S7-400 / WinAC / C7 / ET 200S (IM151 CPU).
• Maximum of 1 S7-300 station per project.
• Limited to a single programming language subset (no GRAPH / SCL / CFC).
• PG/PC interface is restricted to TCP/IP RFC1006 only — no MPI, no PROFIBUS DP.

STEP 7 Lite is the correct choice if you are learning the SIMATIC Manager UI and need to build small ladder/FBD exercises against a single S7-300 PLC or the S7-PLCSIM emulator. It is not the correct choice for evaluation of a production engineering workflow.

Engineering Station Verification

After install and license activation, perform the following checks before connecting to a live PLC.

1. Open SIMATIC Manager → File → New Project. Create a Trial_Test project. Verify that the license watermark is absent and that the status bar shows License OK.
2. Open the PG/PC interface applet (Start → Set PG/PC Interface). Select the appropriate access point: S7ONLINE for TCP/IP RFC1006, or PC Adapter (MPI) / PC Adapter (PROFIBUS) when using a USB PC Adapter.
3. Open Accessible Nodes. With a live S7-300/S7-400 connected on the same subnet, the CPU's MPI / IP address should be listed with its diagnostic buffer entry count.
4. Open S7-PLCSIM and start a simulated S7-300 station. Download a minimal OB1 with SET / SAVE instructions. Verify a green RUN LED on the simulated CPU.
5. Confirm the Automation License Manager lists the trial key with the expected 21-day countdown.

Connecting to a Live S7-300 / S7-400 CPU

When the trial workstation is on the same physical or routed network as the target CPU, the connection workflow is:

1. Confirm the CPU's IP / MPI / PROFIBUS address from the existing project, from the CPU's display (S7-300 with display panel), or via the assignment / DCP / NCM diagnostics tools.
2. Open Set PG/PC Interface and set the active access path. For TCP/IP RFC1006 the access point is S7ONLINE with the parameter TCP/IP (Auto) -> Network card.
3. In SIMATIC Manager, choose PLC → Download after the project is online-compared. The trial license does not restrict download or online operations.
4. Watch the Online → Online View window for the CPU's operating mode (STOP / RUN / RUN-P), diagnostic buffer, and module status.

A trial license does not include the runtime license for S7-PLCSIM, S7-Graph, S7-SCL, or S7-CFC when these optional packages are installed standalone. The auto-trial bundle covers the entire STEP 7 product, but moving the trial key between PCs requires the ordered physical trial key shown in the table above.

Service Pack and Hotfix Strategy

Siemens periodically releases hotfix bundles addressing USB PC Adapter stability, Windows 10 LTSC compatibility, and CPU firmware interoperability regressions. Subscribe to the entry's My Notifications feature to receive an e-mail when a new SP or HF is posted. For V5.7, the SP1 and SP2 packages are cumulative — install the highest SP available rather than each intermediate step.

Migration Considerations to TIA Portal

Projects created in STEP 7 V5.7 can be ported to TIA Portal V20 using the Migrate Project wizard. Items that do not migrate cleanly:

• Custom SDB container structures in S7-400H configurations
• S7-CFC charts with library references not present in the TIA Portal S7-CFC library
• Old S7-300 IM 178-4 / IM 359 module parameterizations predating V5.5

After migration, the original STEP 7 V5.7 project is preserved unchanged; the TIA Portal version is a sibling copy with all blocks re-typed to the TIA Portal data types.

Troubleshooting Matrix

Symptom	Likely Cause	Remediation
SIMATIC Manager shows License not found after install	Automation License Manager service not started	Run services.msc, start ALM service, re-launch SIMATIC Manager
Trial expired after only 14 days on V5.7	V5.4 SP3 trial was used by mistake	Verify installed version in Help → About; reinstall V5.7 SP2 entry 109820861
Accessible Nodes does not list CPU	Wrong PG/PC access point, firewall blocking TCP/102	Set S7ONLINE access point to the active NIC; open Windows Defender firewall rule for S7WIN
Setup aborts with Error 1905 — Module C:\...\S7WTRSFX.DLL failed to register	Missing C++ runtime or pending reboot	Install Visual C++ 2015-2022 Redistributable x64; reboot; rerun setup
Online download stops at Compile / Consistency check	Project contains F-blocks that require S7-FCT add-on	Install optional F-configuration package or remove F-blocks from scope of download
S7-PLCSIM cannot start — port 102 already in use	Another S7 service or Wireshark remote capture binds TCP/102	Stop offending service or change PLCSIM port via PLCSIM → Set PG/PC Interface → Properties

Field-Proven Caveats

• Clock rollback detection: the trial license is bound to the PC fingerprint plus a monotonic time counter. Rolling the system clock back to extend the 21-day trial will lock the license and require re-installation.
• Virtual machines: running STEP 7 V5.7 inside a VM is supported on VMware Workstation 17+ and Hyper-V Gen 2, but the trial license is bound to the VM's UUID; cloning a VM with a running trial is detected and the key is invalidated.
• Windows 11 24H2: the current V5.7 SP2 build is tested against Windows 11 22H2 and 23H2. Windows 11 24H2 has known issues with the SIMATIC NET S7DOS Help service that are resolved by installing SP2 plus the latest hotfix bundle.
• Antivirus interference: exclude C:\Program Files\Siemens\Automation and C:\ProgramData\Siemens from real-time scanning to avoid slow project-open behavior and corrupted S7PKZ archive files.

Related Siemens Support Entries

• STEP 7 V5.7 SP2 Trial Download — Entry 109820861
• Trial License STEP 7 Professional — Entry 29746989
• Trial License STEP 7 base — Entry 22445076
• STEP 7 V5.4 Service Pack 3 — Entry 26578452