OpenPLC vs Siemens PLCSIM
Comprehensive comparison of two leading PLC programming platforms
OpenPLC
OpenPLC Project (Open Source)
Completely FREE - no costs ever
Siemens PLCSIM
Siemens
Industry-standard Siemens emulator
Overall Winner
Siemens PLCSIM leads with an overall score of 62/100
Siemens PLCSIM is the stronger overall choice with better community support. However, OpenPLC may be preferable if you prioritize pricing or if you're already committed to the OpenPLC Project (Open Source) ecosystem.
Score Breakdown
| Category | OpenPLC | Siemens PLCSIM |
|---|---|---|
| Overall | 55 | 62✓ |
| Pricing | 100✓ | 50 |
| Ease of Use | 50 | 50 |
| Features | 63✓ | 61 |
| Industry Adoption | 18 | 69✓ |
| Community Support | 94 | 100✓ |
| Career Value | 23 | 52✓ |
💰Pricing Comparison
OpenPLC (free) is significantly more affordable than Siemens PLCSIM ($$$). OpenPLC costs between $0 and $0, while Siemens PLCSIM ranges from $0 to $2 000.
📚Learning Curve
Both OpenPLC and Siemens PLCSIM have similar learning curves (rated 6/10). Expect 3-6 months to become proficient with either platform.
⚙️Features & Capabilities
OpenPLC offers 11 key features. Siemens PLCSIM provides 7 key features with safety programming, motion control. OpenPLC offers a comprehensive feature set for industrial automation.
🏭Industry Adoption
Siemens PLCSIM has 42% market adoption compared to OpenPLC's 10%. Siemens PLCSIM dominates in Global, while OpenPLC is strongest in Global (primarily education and research). Siemens PLCSIM's higher adoption means more job opportunities and community resources.
🔌Hardware Compatibility
OpenPLC is designed specifically for Generic/Open Hardware hardware, while Siemens PLCSIM works with Siemens PLCs. Both are vendor-specific solutions optimized for their respective hardware ecosystems.
💼Career Prospects
Siemens PLCSIM offers stronger career prospects with 42% market adoption and official certification programs. OpenPLC has 10% adoption and is growing in market presence. For maximum employability, Siemens PLCSIM expertise is more in-demand.
OpenPLC Overview
Key Strengths
- ✓Completely FREE - no costs ever
- ✓Open source - fully customizable
- ✓Runs on inexpensive hardware (Raspberry Pi)
- ✓Perfect for learning without financial investment
Limitations
- ✗Not suitable for commercial/industrial use
- ✗No official support (community only)
- ✗Limited features compared to commercial PLCs
Best For
Siemens PLCSIM Overview
Key Strengths
- ✓Industry-standard Siemens emulator
- ✓Real firmware behaviour, not approximation
- ✓Tight TIA Portal integration
- ✓Trusted for production code validation and FAT
Limitations
- ✗Windows-only
- ✗Requires TIA Portal — large install (~6 GB+)
- ✗TIA Portal licence costs €1,200-2,000+/year for production use
Best For
Recommendations
For Beginners
Both are suitable
For Professionals
Both are suitable
Budget-Constrained
OpenPLC
Enterprise Use
Siemens PLCSIM
Frequently Asked Questions
Which is better: OpenPLC or Siemens PLCSIM?
Siemens PLCSIM is the stronger overall choice with better community support. However, OpenPLC may be preferable if you prioritize pricing or if you're already committed to the OpenPLC Project (Open Source) ecosystem.
What is the price difference between OpenPLC and Siemens PLCSIM?
OpenPLC (free) is significantly more affordable than Siemens PLCSIM ($$$). OpenPLC costs between $0 and $0, while Siemens PLCSIM ranges from $0 to $2 000.
Which is easier to learn: OpenPLC or Siemens PLCSIM?
Both OpenPLC and Siemens PLCSIM have similar learning curves (rated 6/10). Expect 3-6 months to become proficient with either platform.
Which has better career prospects?
Siemens PLCSIM offers stronger career prospects with 42% market adoption and official certification programs. OpenPLC has 10% adoption and is growing in market presence. For maximum employability, Siemens PLCSIM expertise is more in-demand.