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Original Package S7-300 PLC Modular Classic PLC And Industrial Automation

Name: Original Package S7-300 PLC Modular Classic PLC And Industrial Automation
Brand: Shanghai Fradwell Industrial Automation Co., Ltd.
SKU: S7-300
Price: 1,900.00 USD
Availability: InStock

Product Details

Place of Origin: Germany

Certification: CE UL UKCA RCM KC EAC ATEX/IECEx TIEC 61508 SIPLUS RoHS REACH

Model Number: S7-300

Payment & Shipping Terms

Minimum Order Quantity: 1

Price: $800-$3000

Delivery Time: 3-5workdays

Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram

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Product Details

Product Description

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                                                                                                                                                            Original Package S7-300 PLC, S7-300 PLC Modular Classic, S7-300 PLC And Industrial Automation
                      

Type:	CPU	Pakage:	Original Pakage
Warranty:	Original Manufacturer's Warranty	Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge:	For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

Type:	CPU
Pakage:	Original Pakage
Warranty:	Original Manufacturer's Warranty
Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge:	For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

Original Package S7-300 PLC Modular Classic PLC And Industrial Automation

S7-300 PLC: Modular Classic PLC – Stable in Overseas Industrial Scenarios for 20 Years!

The S7-300 series is a classic modular medium-sized programmable logic controller (PLC) that has been widely used in global industrial automation, particularly suitable for medium-scale control projects in manufacturing, process industry, energy, and other sectors. Featuring a modular design, it includes power supply modules, CPU modules, signal modules (digital/analog), function modules (motion control, process control), and communication modules, which can be flexibly combined and expanded to support up to 32 modules—meeting the I/O requirements of complex control scenarios.

Core Advantages of S7-300 Series PLC

Flexible Modular Design: Power supply, CPU, signal modules, and other components can be freely combined, supporting up to 32 modules for expansion. It not only meets the basic control needs of small production lines but also handles complex scenarios by adding function modules (e.g., motion control, process control modules). There's no need to replace the entire device during later capacity expansion or renovation, offering excellent cost-effectiveness.
High Reliability and Environmental Adaptability: Proven through decades of use in global industrial scenarios, it excels in electromagnetic interference resistance and high-temperature tolerance (some models support -25℃~+60℃), with an extremely low failure rate in harsh environments such as chemical, metallurgy, and energy industries. It also holds global certifications like CE, UL, and ATEX, ensuring compliance for overseas projects.
Strong Communication and Compatibility: Natively supporting industrial buses such as PROFIBUS and PROFINET, it seamlessly connects with Siemens inverters, touchscreens, robots, and other products. It is also compatible with general protocols like Modbus and TCP/IP, enabling hassle-free integration of third-party devices (e.g., Omron sensors, Rockwell HMI) for smooth cross-system collaboration.
Easy Programming and Maintenance: Supporting multiple programming languages including LAD, FBD, and SCL, it allows engineers to choose based on their preferences. The Step7 programming software is mature, featuring online debugging and fault diagnosis capabilities. With abundant global technical documentation, solutions for problems are easily accessible. Spare parts are readily available, ensuring quick replacements even for older projects.
Stable Performance for Diverse Needs: Covering CPU models across different performance levels (from entry-level 312C to high-performance 319F), it delivers stable instruction execution speed. It can handle not only conventional logic control but also complex tasks such as process control (e.g., PID regulation) and multi-axis motion control, adapting to multiple fields including manufacturing, process industry, and energy.

Technical Parameters

Product Category	Model	Work Memory	Integrated I/O	Core Interfaces	Key Performance & Special Functions
Compact	CPU 312C	Not specified	Digital inputs/outputs	MPI	256B bit memory; 256 timers/counters; 2-channel high-speed counter (10kHz); 2-channel frequency measurement (10kHz); 2-channel PWM output (2.5kHz); Software real-time clock
Compact	CPU 313C	Not specified	Digital inputs/outputs, analog inputs/outputs	MPI	3-channel high-speed counter (30kHz); 3-channel frequency measurement (30kHz); 3-channel PWM output (2.5kHz); PID closed-loop control support
Compact	CPU 314C-2PN/DP	192KB	24 digital inputs, 16 digital outputs; 5 analog inputs, 2 analog outputs	MPI/DP (configurable), PROFINET	4-channel high-speed counter (60kHz); 4-channel frequency measurement (60kHz); 4-channel PWM output (2.5kHz); Positioning control function; Hardware real-time clock
Standard	CPU 315-2DP	Not specified (expanded in new versions)	No integrated I/O	MPI, DP	PROFINET isochronous synchronization support; Bit operation execution time as low as 0.05μs in new versions (2x performance improvement over older models)
Standard	CPU 317-2PN/DP	512KB (old version); expanded in new versions	No integrated I/O	DP/MPI, PROFINET (dual interface)	2 PROFINET interfaces (direct device connection without switch); Bit operation execution time as low as 0.025μs in new versions; Enhanced Web Server function
Standard	CPU 319-3PN/DP	2048KB	No integrated I/O	MPI/DP, DP, PROFINET	Highest performance in S7-300 series; Smart technology/motion control support; Suitable for large-scale complex control scenarios

Industry Applications & Real-World Scenarios

Automotive Manufacturing Industry

A staple in overseas automobile assembly plants and auto parts suppliers. In Southeast Asian car assembly factories, the CPU 315-2PN/DP paired with signal modules controls the coordinated operation of robotic arms on body welding lines. Via PROFINET, it synchronizes actions across multiple welding stations to ensure welding precision.

At European auto parts plants, the compact CPU 314C-2PN/DP manages engine piston processing equipment. Its integrated I/O interfaces real-time collect tool cutting parameters while regulating conveyor belt speed via inverter control, adapting to continuous parts production.

Chemical Industry

Widely adopted in overseas chemical sectors, especially for dusty, extreme-temperature environments. In large petrochemical parks in the Middle East, the SIPLUS CPU 315-2DP controls crude oil distillation units. Its high/low temperature resistance suits outdoor open-air installations, connecting temperature/pressure sensors via DP to monitor distillation tower conditions and adjust heater power accordingly.

Energy Industry

Covers both traditional and renewable energy scenarios. At Nordic wind farms, the SIPLUS CPU 317F-2PN/DP withstands low-temperature outdoor conditions. It collects real-time wind turbine data (rotor speed, wind velocity) via communication modules to remotely adjust blade angles, and triggers shutdowns when wind speeds exceed safe limits.

Frequently Asked Questions

Q: We're using Windows 11 to install STEP 7 V5.5 for programming the S7-300, but the installation keeps failing with a ".NET Framework error". What should we do?

A: STEP 7 V5.5 is super finicky with new OS! It was designed for Windows 7, so Windows 11 won't support it natively. Your best bet is to either upgrade to STEP 7 V5.7 SP2 (the latest version that officially supports Windows 11 64-bit) or run a Windows 7/10 1809 virtual machine. If you stick with V5.5, make sure to manually install .NET Framework 4.0 and VC++ 2005/2008 runtimes first, turn off your antivirus, and install to a folder with no Chinese characters (like C:SiemensStep7) using admin rights. We've fixed this for US factories—V5.7 SP2 is the easiest long-term solution.

Q: We're trying to connect an S7-300 CPU 315-2DP to an S7-1200 via Ethernet in our German factory, but the communication keeps dropping. Any tips?

A: You're probably using the wrong driver! The S7-300 uses PROFINET/PROFIBUS natively, but when connecting to S7-1200, don't select the "S7-300/400" driver in TIA Portal. Instead, create an "S7 Connection" and choose the "S7-1200/1500" driver. Also, check the TSAP numbers—S7-300 usually uses 03.01, while S7-1200 uses 03.00. Make sure both have static IPs on the same subnet and ping each other first. We've debugged this for Bavarian manufacturers—works perfectly once the driver and TSAP are set right.

Q: We're installing an S7-300 in a chemical plant in the Middle East (ATEX Zone 2), but the safety inspector said our setup is non-compliant. What's missing?

A: You need to follow explosion-proof wiring rules! First, make sure you're using the SIPLUS variant of the S7-300 (e.g., SIPLUS CPU 315-2DP) which has ATEX/IECEx certification. Then, ensure equipotential bonding for all devices—no equalizing current means no ignition risk. Unused cable ends must be sealed per IEC 60079-14, and separate intrinsically safe and non-safe circuits to avoid cross-contamination. Also, only let Siemens-authorized techs do repairs—unauthorized work voids the explosion-proof certification. We've passed ATEX audits in Dubai chemical plants with this setup.

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Original Package S7-300 PLC Modular Classic PLC And Industrial Automation