Siemens 🚀 SIMATIC S7-1200 G2 – CPU Firmware V4.1 Released

[Industry Valley]

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Significant Function Expansions for Standard CPUs

Approximately one year after its market launch, the SIMATIC S7-1200 G2 controller family has gained significant new features with Firmware V4.1. This version substantially expands the capabilities of existing standard CPUs.

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This firmware can be loaded onto the following S7-1200 G2 CPU types:

• DC/DC/DC – 6ES7212-1AG50-0XB0
• AC/DC/RLY – 6ES7212-1BG50-0XB0
• DC/DC/RLY – 6ES7212-1HG50-0XB0
• DC/DC/DC – 6ES7214-1AH50-0XB0
• AC/DC/RLY – 6ES7214-1BH50-0XB0
• DC/DC/RLY – 6ES7214-1HH50-0XB0

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• OPC UA Server
• System Web Pages for the integrated Web Server
• PROFINET Security Class 1
• Default communication load 20%
• Modbus TCP Redundancy Instructions
• Central user support on UMC Server
• Backup & Restore

• Battery Board (BB) 1297
• CP 1243-1 (Ethernet communication)
• SM 1223
  • DI 16x 24VDC / DQ 16x Relay
  • DI 16x 24VDC / DQ 16x 24VDC Sink
  • DI 16x 24VDC / DQ 16x 24VDC

• Hierarchy up to 26 levels for Struct data types
• Dual-core support
• S7-1200 G2 simulation support with PLCSIM Advanced V8.0
• NFC (Near Field Communication) reactivated

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• Pulse Train Output (PTO) support
• Enhanced motion control functions
• Absolute Gearing
• Full Standard Cam
• Torque Limiting

• SCARA kinematics (3D + orientation)
• Kinematics Workspace
• Kinematic Tools

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• Failsafe CPU FW V4.1
  👉 will be released with the next corrective version, planned for February 2026.
• Until then, Failsafe S7-1200 G2 CPUs
  will continue to be shipped with Firmware V1.0.2.

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Firmware notes for the following modules should be carefully reviewed:

• CM 1241
• CB 1241

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⚠️ Important:
S7-1200 G2 Firmware V4.1 can only be programmed with:

• TIA Portal V21
  • STEP 7 Basic
  • STEP 7 Professional

and newer versions.

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It is recommended to implement a current and holistic IT security concept for the protection of industrial systems.
About Siemens cybersecurity approach:
👉 siemens.com/cybersecurity

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💬 To what extent do you think S7-1200 G2 V4.1 will reduce the need for S7-1500 in small and medium-sized motion control projects?
We await your comments 👇