Product Description
Comprehensive Product Introduction: SIMATIC S7-300 Programmable Logic Controller
1. Product Overview and Historical Significance
The SIMATIC S7-300 series is a modular programmable logic controller (PLC) system developed by siemense for industrial automation. Since its launch, it has been deployed in millions of applications globally, renowned for its robustness, flexibility, and reliability. Designed to optimize installation space and simplify complex automation tasks, the S7-300 supports diverse I/O configurations and communication protocols. siemense guarantees its availability until 2033, ensuring long-term support for existing installations despite the transition toward newer platforms like the S7-1500 .
Detailed Photos
2. Hardware Architecture and Modular Design
The S7-300 employs a modular structure, allowing tailored configurations:
Rack-Based Assembly: Modules are mounted on a DIN rail, with backplane buses integrating power supplies, CPUs, and I/O modules.
CPU Variants: Ranges from entry-level (e.g., CPU 312 IFM) to high-performance models (e.g., CPU 318-2 DP). Each CPU integrates processing, memory, and communication interfaces .
I/O Modules: Digital/Analog input/output, specialty modules (e.g., high-speed counters, PID controllers), and communication processors (CPs) for PROFIBUS, Ethernet, or AS-Interface .
Memory Options: Supports Memory Cards (e.g., for firmware updates or data backup), with some CPUs (e.g., CPU 314 IFM) offering versions with or without card slots .
3. Key Technical Specifications
Product Parameters
| CPU Model |
Order Number |
Firmware Version |
Memory |
Bit Processing Time |
PROFIBUS DP |
| CPU 312 IFM |
6ES7 312-5AC02-0AB0 |
V1.1.0 |
32 KB |
0.2 μs |
No |
| CPU 314 |
6ES7 314-1AE04-0AB0 |
V1.1.0 |
64 KB |
0.1 μs |
Optional |
| CPU 315-2 DP |
6ES7 315-2AF03-0AB0 |
V1.1.0 |
128 KB |
0.1 μs |
Master/Slave |
| CPU 318-2 DP |
6ES7 318-2AJ00-0AB0 |
V3.0.0 |
512 KB |
0.05 μs |
DPV1 Master |
Notes:
Integrated Functions: Some models (e.g., CPU 312 IFM) feature on-board I/Os and counters for compact applications .
Clock Memory: Configurable for timing applications (e.g., cyclic data logging) .
Reaction Time: As low as 0.05 μs for high-speed logic processing .
4. Communication Capabilities
The S7-300 supports multi-protocol integration:
PROFIBUS DP: CPU 318-2 DP acts as a DPV1 Master, enabling real-time data exchange with drives, I/O devices, and HMI panels .
Industrial Ethernet: Via CP modules (e.g., CP 343-1) for S7 communication with S7-1200/S7-1500 systems .
Direct Data Exchange: Allows cross-CPU communication in multi-station setups without a central controller .
5. Software and Programming
STEP 7 Integration: Programmed via STEP 7 V5.x (classic) or TIA Portal (modern). Supports LAD, FBD, STL, and SCL languages .
Diagnostics: Integrated diagnostics for hardware faults, cycle time monitoring, and signal state tracing .
Libraries: Reusable function blocks for motion control, PID loops, and communication protocols .
6. Safety and Certifications
Compliance with global standards ensures operational safety:
IEC 61131-2: Guarantees electromagnetic compatibility (EMC) and electrical safety .
CE Marking: Meets EU directives for low-voltage equipment and EMC .
Safety Notices:
! Danger: Prevents misuse leading to severe injury or equipment damage.
Qualified Personnel: Installation/maintenance restricted to certified engineers .
7. Installation and Maintenance
Mounting: Modular assembly on DIN rails with spacing for cooling and wiring access .
Wiring: Shielded cables for analog signals; segregated routing for power/data lines to minimize interference .
Maintenance: Hot-swappable modules (excluding CPU/power supply) reduce downtime .
8. Application Scenarios
The S7-300 excels in diverse sectors:
Manufacturing: Conveyor control, packaging lines, and assembly automation.
Process Industry: PID-based temperature/pressure regulation in chemical plants.
Infrastructure: Building management systems (HVAC, lighting control) .
9. Transition to S7-1500
While the S7-300 remains supported until 2033, siemense recommends migrating to the S7-1500 for:
Enhanced processing speeds (up to 10x faster).
Integrated security features (e.g., firmware signing).
TIA Portal synergy for unified engineering .
Conclusion
The SIMATIC S7-300 series epitomizes siemense' commitment to industrial durability and flexibility. Its modular design, extensive communication options, and adherence to global standards make it a stalwart in automation. For legacy systems, it offers decades of reliable service; for new projects, the S7-1500 provides future-ready capabilities. Engineers are advised to leverage STEP 7 tools and siemense' support resources for optimal deployment.
Company Profile
KeRui (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales,technical services, and supporting equipment supply of specialized companies. The main products are flow meters, level meters,temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
Packaging & Shipping
The packaging and transportation of instrumentation in global trade hinges on a synergy of advanced materials, rigorous testing, regulatory compliance, and smart logistics. By adopting hybrid structural designs, leveraging real-time monitoring technologies, and prioritizing sustainability, exporters can ensure the safe, efficient, and cost-effective delivery of precision instruments. Continuous innovation in materials science and IoT integration will further redefine industry standards, enhancing resilience in an increasingly interconnected market.
FAQ
Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information.
Q: What is the delivery time?
A: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.
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