S7-300 by Siemens
The S7-300 has been a trusted presence in factories worldwide for decades. The SIMATIC S7-300 PLC series has built a strong reputation. It is known for its reliability, scalability, and ease of integration. This makes it suitable for a wide variety of industrial applications, including automotive manufacturing, process control, infrastructure, and energy management.
PM410 Discontinuation Notice
On 1st October 2025, the Siemens S7-300 lifecycle will enter its PM410 phase. This phase is officially classified as a "Type Discontinuation", marking a key milestone in the product's lifecycle. This includes all CPUs, IO modules, communication and technology modules, accessories, ET 200M interface modules and SIRIUS variants. Your operations can continue without disruption, even though new stock from the OEM is no longer available.
6AG1321-1FF01-2AA0
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1314-6EH04-7AB0
SIPLUS S7-300 CPU 314C-2 PN/DP
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1321-1FF10-7AA0
SIPLUS S7-300 SM 321
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn moreComplete ET200M support for CPUs, SURPLUS, I/O, Communication modules and more
Explore compatible products
6AG1321-1FH00-7AA0
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1314-6CH04-7AB0
SIPLUS S7-300 CPU 314C-2 DP
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1321-7BH01-2AB0
SIPLUS S7-300 SM 321
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1314-6BH04-7AB0
SIPLUS S7-300 CPU 314C-2 PtP
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
6AG1321-7BH01-4AS0
SIPLUS S7-300 SM 321
S7-300 & ET200M was discontinued by Siemens on 1st October 2025.
Learn more
- Swift global dispatch
- Extensive warranty included
- ISO 9001:2015 certified
Phase-out announced
P.M400Official announcement of S7-300 & ET200M discontinuation
Type discontinuation – Spare parts only
P.M410Current phase – No longer in production, spare parts available
Discontinuation
P.M490Final discontinuation of all support
End of lifecycle – Obsolete
P.M500Complete end of lifecycle support
Resources & Documentation
Upgrade ET 200M to ET 200SP HA
Migration guide for upgrading systems
S7-1500S Migration Documentation
Official migration documentation v4.0
WinAC SW Controller Migration Guide
Software controller migration documentation
S7-300 to S7-1500 Migration Guide
Comprehensive migration documentation
S7-300 to S7-1500 Migration Guide v11
Updated migration guide version 11
ET200 to ET200SP-HA Adapter Guide
Adapter installation and configuration
ET 200SP HA I/O Module Comparison
Comparison with ET 200M modules
ET200SP-HA Redundant Configuration
Interface module with S7-400H configuration
SIMATIC ET 200SP I/O CPU Overview
Product overview for open controller
S7-300 & ET200 CPU Instruction List
Complete instruction reference guide
S7-300 Automation System Information
Product information and specifications
S7-300 Installation Manual
Complete installation guide
SIMATIC ET 200 Manual
Complete ET 200 system manual
