Siemens S7-1200 Program Transfer Without TIA Portal: 5 Methods

Siemens S7-1200 Program Transfer Without TIA Portal: 5 Field-Proven Methods

OEMs and system integrators who ship SIMATIC S7-1200 CPUs to remote customer sites regularly encounter the same constraint: the engineering workstation in the lab carries a TIA Portal license, but the operator PC at the customer location does not. Program updates, however, must still reach the PLC. This reference consolidates the five procedures that Siemens-documented and field-proven for delivering a TIA Portal V13 (or later) project to an S7-1200/S7-1500 CPU without installing TIA Portal at the customer site.

The methods covered are: (1) SIMATIC Memory Card (SMC) offline transfer, (2) the SIMATIC Automation Tool with a project archive, (3) a TIA Portal trial license, (4) a TIA Portal floating license on USB media, and (5) the S7-1200 Tool / memory-reset (MRES) procedure. Each is rated against cost, complexity, and connectivity requirements so the field engineer can pick the right procedure per customer.

1. Prerequisites and Assumptions

Before any of the five methods can be executed, the following conditions must be met at the lab and at the customer site:

• The TIA Portal project is fully compiled and passes the consistency check (Project → Compile → Software (rebuild all)).
• The CPU article number (e.g. 6ES7214-1AG40-0XB0) and firmware version (read via Online → Accessible devices or from the CPU display) at the customer site match the device configuration in the project.
• The customer PC has administrator rights and a free USB port capable of reading a SIMATIC Memory Card or a standard SD card with the appropriate adapter.
• Network reachability between the customer PC and the PLC has been verified. For PROFINET this is typically IP 192.168.0.1/24 on the CPU, default gateway 192.168.0.2.

2. Method 1 — SIMATIC Memory Card (SMC) Offline Transfer

The SIMATIC Memory Card is the most widely used mechanism for OEM program delivery. The S7-1200 retains its program in internal load memory when no card is present; the card itself functions as a transfer medium and as external load memory. The complete procedure is documented in chapter 2.7.3 of the S7-1200 System Manual.

S7-1200 Programmable Controller — System Manual (entry ID 107672495)

2.1 Required hardware

2.2 Lab procedure

1. In TIA Portal, open the project that targets the remote CPU.
2. Select the CPU device view and right-click the CPU → SIMATIC Memory Card → Add user-defined card (or insert the SMC into the PLC's card slot and use Project → Card Reader/USB memory).
3. Drag the Program blocks, System blocks, and PLC tags folders onto the card target in the project tree.
4. Select Project → Card Reader/USB memory → Write to memory card. TIA Portal will format the SMC with a FAT16 file system and write the S7_JOB.S7S and SIMATIC.S7S container files.
5. Verify by inserting the SMC into a lab CPU of the same article number and powering on. The CPU should perform an automatic download and transition from STOP with orange SF/MAINT to RUN with green RUN LED.
6. Ship the SMC to the customer by courier, along with the printed procedure (see §2.3).

2.3 Customer procedure

1. Place the machine in a safe state. The CPU will lose its current program and retain only the program stored on the card unless the CPU is configured to copy RAM to card. Confirm the machine's E-STOP and guarding are functional before proceeding.
2. Power down the S7-1200 CPU.
3. Insert the shipped SMC into the card slot of the CPU.
4. Restore power. The CPU performs a memory reset and then copies the program from the card to internal flash. The MAINT LED blinks yellow during this phase; the RUN LED turns solid green once transfer is complete (typically 30 to 90 seconds for a 1 MB project).
5. Verify by reading the diagnostics buffer (Online → Online & diagnostics → Diagnostics buffer) from any PC or HMI that can reach the CPU.

3. Method 2 — SIMATIC Automation Tool

The SIMATIC Automation Tool is a free utility from Siemens that performs batch operations on a network of S7-1200, S7-1500, ET 200, and certain legacy S7-300/S7-400 CPUs without requiring TIA Portal to be installed. It can update firmware, change IP addresses, transfer projects, and read diagnostic buffers on up to several hundred devices from a single operator PC.

SIMATIC Automation Tool — Tool for Service and Commissioning (entry ID 98161300)

3.1 Tool capabilities relevant to program transfer

• Scans a subnet for S7-1200/S7-1500 devices via PROFINET discovery (DCP) and lists them with article number, firmware, and current operating mode.
• Pushes a compiled TIA Portal project archive (.zap or .ap13/.ap14/.ap15/.ap16/.ap17/.ap18/.ap19) to one or many CPUs.
• Sets the CPU to RUN, STOP, or performs a memory reset before download.
• Verifies the download by comparing the program CRC after transfer.

3.2 Lab procedure

1. Compile the project in TIA Portal.
2. Select Project → Archive → Archive and save as a .zap file. Confirm the archive contains the device configuration by opening it in TIA Portal on a second machine.
3. Email or upload the .zap archive to the customer via a secure file-transfer mechanism. Archives of S7-1200 projects are typically 200 KB to 5 MB, so email attachments are feasible for most installations.

3.3 Customer procedure

1. Install the SIMATIC Automation Tool on the customer PC. No TIA Portal installation is required.
2. Launch the tool and click Add device → Network scan. The tool broadcasts DCP discovery packets and lists every Siemens controller on the subnet.
3. Select the target CPU in the device table.
4. From the Operations panel, select Program download and browse to the .zap file delivered by the lab.
5. If required by the lab procedure, tick Memory reset before download and Start (RUN) after download.
6. Click Execute. The tool reports per-step status; the entry Download completed successfully (CRC match) confirms the program on the PLC matches the archive.

3.4 Compatible firmware and tool versions

Check the release notes of the installed tool for the exact matrix; new TIA Portal major versions sometimes ship with a tool revision that does not yet accept older archives.

4. Method 3 — TIA Portal Trial License

A TIA Portal trial license is a fully-functional time-limited license that Siemens makes available for evaluation. The duration is up to 21 days of actual use from first launch per license key. For short commissioning or troubleshooting visits where the customer does not want a permanent TIA Portal installation, the trial license is the lowest-friction option.

4.1 Activation procedure

1. From the lab, request a trial license key through the Siemens License Web Portal. The customer receives an email with a license certificate.
2. Install TIA Portal at the customer site using the standard setup media (DVD or downloaded ISO).
3. Transfer the license certificate (.txt) via USB stick and import via Automation License Manager → Install.
4. Launch TIA Portal and confirm the license appears in the License Manager. The trial timer begins on first detected use of TIA Portal.

5. Method 4 — TIA Portal Floating License on USB Media

A floating license is not tied to a single PC; it resides on a USB dongle (the "license key USB media" or simply "USB stick") and can be moved between engineering workstations. One dongle covers all TIA Portal components (STEP 7, WinCC, PLCSIM, etc.) up to the bundle purchased. For an OEM supporting many customer sites, one floating license per service engineer is more economical than one license per site.

5.1 Lab procedure

1. Purchase a TIA Portal floating license (article family 6ES7822-1A... — refer to Siemens price list for current part numbers).
2. Siemens delivers the USB dongle with a license certificate.
3. Import the certificate into the Automation License Manager on any PC that will host TIA Portal.

5.2 Customer procedure

1. Install TIA Portal (V13 or matching version) on the customer PC using the standard media.
2. Insert the USB license key. Windows detects it as a removable drive with a license container.
3. Start TIA Portal. The License Manager reads the dongle and unlocks the software.
4. Connect to the PLC via PROFINET, perform the program transfer (Online → Download to device), and close TIA Portal.
5. Remove the USB dongle and ship it back to the OEM. The next visit reuses the same dongle.

5.3 Cost justification model

For an OEM servicing n customer sites per year with a TIA Portal license list price of approximately €3,500 (Basic) to €11,000 (Professional) at 2024 reference pricing, the floating license breaks even once n > 2 customer visits per year would have otherwise required individual installations. Always confirm the current list price with Siemens DI sales before preparing a business case.

6. Method 5 — S7-1200 Tool and the MRES Procedure

Two sub-procedures belong here. The first uses the legacy S7-1200 Tool (an early commissioning utility from Siemens that has been superseded by the SIMATIC Automation Tool but still ships with some older installations). The second is the memory reset (MRES) sequence combined with a memory card, which is the procedure machine builders traditionally used on S7-300/S7-400 and which still works on S7-1200.

S7-1200 System Manual — Chapter 2.7.3 Memory Card Operation

6.1 S7-1200 Tool procedure

1. Install the S7-1200 Tool on the customer PC.
2. Connect the PC to the CPU via PROFINET.
3. Use the tool's Program download function to push the .zap archive. The tool is single-device only — for fleet updates, prefer the SIMATIC Automation Tool.

6.2 MRES procedure with memory card

1. Insert the SMC containing the new program.
2. Power on the CPU. The CPU transitions to STOP with the MAINT LED blinking.
3. Use the CPU display (if present) or TIA Portal to perform a memory reset: navigate to Settings → Reset → Memory reset. On a CPU without a display, perform MRES via the mode selector by holding the selector in the MRES position for 3 seconds, releasing for 3 seconds, then holding again for 3 seconds.
4. The CPU copies the program from the SMC into internal load memory and transitions to RUN if the project permits.

7. Method Comparison Matrix

8. Field Commissioning Checklist

Use the following checklist on every customer visit, regardless of which transfer method is selected:

1. Capture a backup of the existing PLC program before any transfer. With TIA Portal: Online → Upload from device → Save as .zap. Without TIA Portal: insert a blank SMC, perform MRES, then power cycle — the previous program is then on the card.
2. Photograph the CPU display or the diagnostic LEDs before and after the transfer.
3. Confirm the CPU article number printed on the front panel (e.g. CPU 1214C DC/DC/DC 6ES7214-1AG40-0XB0) matches the TIA Portal device configuration.
4. Read the diagnostics buffer after transfer and verify the entry Download of program successful (CRC: 0xA3F2...).
5. Force I/O and verify each output in manual mode before returning the machine to automatic operation.
6. Sign the commissioning log with the customer representative. The log must include the project archive hash (SHA-256) so the lab can prove which version is on the PLC.

9. Troubleshooting Matrix

10. Security and Audit Considerations

Program transfer outside the TIA Portal environment bypasses the integrated user-management and trace features that an OEM normally relies on. Compensating controls the lab should put in place:

• Sign the project archive with the SIMATIC Project Signature before export. The signature is verified by the Automation Tool on download and rejected if the file is tampered with.
• Apply know-how protection to the function blocks. The S7-1200 supports block-level password protection; the password is supplied out-of-band to the customer, never embedded in the archive.
• Maintain a CSV log of every archive SHA-256 hash shipped, the destination site, and the receiving technician's signature.
• For F-CPU programs, only a person listed in the safety responsibility matrix may sign and ship the archive. The Siemens SIMATIC Safety — Configuration and Programming manual describes the F-signature workflow.

11. Recommended Procedure by Scenario

Based on the methods covered, the following decision tree applies for an OEM with a single TIA Portal V13 Basic license in the lab:

• Single site, no IT infrastructure, mail is the only channel: Method 1 (SMC).
• Multiple sites with PROFINET access and trained technicians: Method 2 (SIMATIC Automation Tool).
• Engineer visits site with laptop for one-off commissioning: Method 3 (Trial license) or Method 4 (Floating USB) depending on visit frequency.
• Legacy equipment that still ships with the S7-1200 Tool: Method 5 with verification on the bench before deployment.

12. References Inside This Article

All Siemens documentation referenced in this article is freely available on Siemens Industry Online Support. The following entries are cited above:

• S7-1200 System Manual — entry ID 107672495
• SIMATIC Automation Tool — entry ID 98161300