Siemens 6ES7313-5BE01-0AB0 CPU 313C | SIMATIC S7-300 PLC

Product Overview: Siemens SIMATIC S7-300 CPU 313C

This compact CPU packs powerful control and I/O into a single unit. It features 24 digital inputs, 16 digital outputs, 4 analog inputs, 2 analog outputs, and a PT100 input. The built-in 24V DC supply and 32 KB working memory make it ideal for space-critical applications. It supports fast counters (30 kHz) and PID control, offering a reliable solution for small to medium automation tasks.

Engineered for flexibility, the CPU 313C works with STEP 7 V5.2 SP1 or higher. Its MMC slot allows easy program storage and data backup. With integrated MPI communication, it connects smoothly to HMI and programming devices.

Technical Specifications

• Brand: Siemens
• Model: 6ES7313-5BE01-0AB0
• Series: SIMATIC S7-300
• Type: Compact CPU with integrated I/O
• Working Memory: 32 KB (program and data)
• MMC Capacity: up to 8 MB (maintenance-free backup)
• Digital Inputs: 24 (24V DC, 0.1/0.3/3/15 ms delay)
• Digital Outputs: 16 (500 mA per channel, electronically protected)
• Analog Inputs: 4 (voltage/current) + 1 (Pt100/resistance)
• Analog Outputs: 2 (voltage/current)
• Fast Counters: 3 channels (up to 30 kHz)
• Pulse Outputs: 3 channels (PWM up to 2.5 kHz)
• Supply Voltage: 24V DC (20.4V – 28.8V)
• Power Loss: typ. 14 W
• Processing Times: bit op. 0.1 µs, word op. 0.2 µs, fixed point 2 µs, float 3 µs
• Number of Blocks: 1024 (DBs, FCs, FBs, OBs, SDBs)
• Counters/Timers: 256 S7 counters, 256 S7 timers, IEC counters/timers (SFB)
• I/O Address Area: 1 KB inputs / 1 KB outputs
• Process Image: 128 B inputs / 128 B outputs
• Communication: MPI (187.5 kbit/s, 8 connections)
• Real-time Clock: yes, backup 6 weeks
• Dimensions: 120 x 125 x 130 mm (W x H x D)
• Weight: approx. 660 g

Installation & Commissioning

• Rack Mounting: fits standard S7-300 rails; max. 4 racks, 8 modules per rack
• Wiring: front connector (2x 40-pin) required; use shielded cables for analog and fast I/O
• Micro Memory Card: mandatory for program storage and data backup
• STEP 7 Integration: V5.2 SP1 or higher; supports LAD, FBD, STL, SCL, GRAPH, HiGraph
• Diagnostics: built-in status/control variables, forcing, and breakpoints (2)

Compatibility & Certifications

• Software: fully compatible with SIMATIC STEP 7 V5.2 SP1 and later
• Communication: MPI, global data, S7 basic communication, S7 communication (server and client via CP)
• FM/CP Support: up to 8 FMs, 8 CPs (PtP), 6 CPs (LAN)
• Environmental: 0 to 60 °C operating temperature; 40 °C for clock backup (6 weeks)
• Protection: short-circuit protection for digital outputs, analog input overvoltage protection
• Certification: meets Siemens quality and industrial standards

Warranty & Shipping

• Warranty: 12 months against manufacturing defects
• Shipping: dispatched within 12-24 hours after order confirmation
• Carriers: FedEx, UPS, DHL (trackable express services)

Expert Review

The CPU 313C is a workhorse for small to mid-size machines. Its integrated I/O reduces cabinet space and wiring. The fast counters and PID blocks make it suitable for motion and temperature control. For most applications, the 32 KB memory is sufficient, but if you need more, consider the CPU 314 series. The MPI port allows easy connection to HMIs, and the MMC ensures reliable program retention. Overall, it is a cost-effective, robust choice for standard automation tasks.

Manager’s Insight

From a project management perspective, the CPU 313C offers a balanced mix of performance and cost. Its compact design lowers panel costs, and the integrated power supply simplifies installation. The 24/7 support and wide availability of spare parts make it a low-risk investment. For factories upgrading from older S7-300 models, this CPU provides a straightforward migration path with minimal re-engineering.

Applications & Suitable Devices

• Machine Building: conveyor systems, packaging machines, textile machinery
• Process Control: mixing stations, temperature control, dosing systems
• Building Automation: HVAC control, lighting, access control
• Test & Measurement: data acquisition, counter/frequency measurement
• Retrofit Projects: upgrading existing S7-300 systems with new features

FAQ – Frequently Asked Questions

• Q: What is the maximum MMC size supported?
  A: Up to 8 MB.
• Q: Can I use this CPU without an MMC?
  A: No, an MMC is required for program and data storage.
• Q: Is the CPU compatible with TIA Portal?
  A: It works with STEP 7 V5.2 SP1 or higher. For TIA Portal, please check Siemens compatibility.
• Q: How many analog inputs does it have?
  A: 4 analog inputs (voltage/current) plus 1 for Pt100/resistance.
• Q: What is the counting frequency?
  A: 30 kHz per counter.
• Q: Can I connect a panel to the MPI port?
  A: Yes, MPI supports PG/OP communication with up to 8 connections.
• Q: What is the power consumption?
  A: Rated current 700 mA at 24V DC.
• Q: How do I perform a factory reset?
  A: Use the MMC or STEP 7 to clear the memory.
• Q: Is the clock battery-backed?
  A: No battery needed; clock backup is via MMC (maintenance-free).
• Q: What is the maximum cable length for digital inputs?
  A: 1000 m shielded, 600 m unshielded.

Selection Guide

• Choose this CPU if you need a compact unit with integrated I/O and PID.
• It fits applications requiring up to 24 DIs and 16 DOs, plus analog control.
• For larger programs (>32 KB), consider the CPU 314 or 315.
• For Profibus DP master functionality, select a CPU with DP port or add a CP.
• Ensure your MMC is sized correctly (e.g., 2 MB for moderate programs).

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Phone: +86 18030005825 (WhatsApp)

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