Siemens 6ES7313-5BE00-0AB0 CPU Module S7-300

6ES7313-5BE00-0AB0 Siemens S7-300 Compact CPU

Product Introduction

The 6ES7313-5BE00-0AB0 belongs to Siemens’ SIMATIC S7-300 family. This compact CPU integrates a power supply, I/O, and communication interfaces. It works perfectly for control applications with space constraints. You get 24 digital inputs and 16 digital outputs onboard. Additionally, it includes 4 analog inputs and 2 analog outputs. There is also one input for Pt100 resistance thermometers.

This unit operates with a rated supply voltage of 24V DC. The permissible range runs from 20.4V to 28.8V. Its typical current consumption sits at 700 mA. Power loss is typically 14 W. The integrated work memory holds 32 kbytes for both program and data. Notably, this memory is not expandable. However, you can expand the load memory using a Micro Memory Card (MMC) up to 4 Mbytes.

Technical Specifications

The CPU processes bit operations in just 0.1 µs typically. Fixed-point arithmetic takes about 1 µs. Floating-point math requires around 15 µs. It supports up to 127 DBs, each 16 kbytes max. Furthermore, it handles 128 FBs and 128 FCs, also with 16 kbyte max each.

For counters, the 6ES7313-5BE00-0AB0 offers 256 S7 counters with adjustable retentivity. The counting range spans from 1 to 999. It also includes IEC counters via SFB. You get 256 S7 timers with adjustable retentivity and a time range from 10 ms to 9,990 s.

The I/O address area covers 1 kbyte for inputs and 1 kbyte for outputs. Its process image uses 128 bytes for inputs and 128 bytes for outputs. You can connect up to 3 expansion units. The maximum number of modules per rack is 31.

For digital inputs, the rated voltage is 24V DC. Signal “0” ranges from -3V to +5V, while signal “1” requires +15V to +30V. Typical input current for signal “1” is 8 mA. Input delay is parameterizable at 0.1, 0.3, 3, or 15 ms. For technological functions, the delay from “0” to “1” is max 16 µs.

Digital outputs total 16 with electronic short-circuit protection. Minimum output voltage for signal “1” is L+ (-0.8 V). Maximum output current per channel is 500 mA at 0–60°C. Switching frequency with resistive load reaches 100 Hz max.

Analog inputs number 4 for voltage or current. One additional input supports resistance or Pt100. Voltage range includes 0 to +10V. Current ranges cover 0–20 mA, -20–+20 mA, and 4–20 mA. Resolution is 12 bits including sign. Integration time is parameterizable at 2.5, 16.6, or 20 ms.

Analog outputs number 2. Voltage ranges: 0–10V and -10–+10V. Current ranges: 0–20 mA, -20–+20 mA, and 4–20 mA. Conversion time per channel is 1 ms.

Communication and Interfaces

The 6ES7313-5BE00-0AB0 includes one MPI interface. Maximum cable length without repeater is 50 m. Transmission rate goes up to 187.5 kbit/s. The interface supports up to 8 connections. It offers PG/OP communication, global data communication, and S7 communication as a server.

For S7 basic communication, user data per job is 76 bytes max. S7 communication as a server allows 64 kbytes per job. The total number of connections is 8. Among them, 7 are usable for PG communication, 7 for OP communication, and 4 for S7 basic communication.

Integrated Functions

Three fast counters operate at 30 kHz max. Frequency measurement is supported. A PID controller is built-in. Three pulse outputs run at a limit frequency of 2.5 kHz.

Mechanical and Environmental Data

Dimensions: 120 mm width, 125 mm height, 130 mm depth. Weight is approximately 660 g. The unit requires an MMC for backup, guaranteeing maintenance-free program and data retention.

Installation Guidelines

First, mount the CPU on a standard DIN rail inside a control cabinet. Ensure proper ventilation around the unit. Next, insert the Micro Memory Card into the slot before powering up. Then connect the 24V DC supply to the integrated terminals. Verify the voltage stays between 20.4V and 28.8V. After that, wire digital and analog I/O according to the terminal diagram. Use shielded cables for analog signals and for technological functions, keeping cable lengths within 100 m. Finally, configure the CPU using STEP 7 V5.1 SP2 or later.

Packaging List

• 6ES7313-5BE00-0AB0 CPU module (1 unit)

• Front connector (screw-type, 1 unit)

• Manual and quick reference guide (printed)

Note: MMC card is required separately. No certificates or warranty documents are included.

Shipping

We ship via FedEx, UPS, or DHL worldwide. All packages include tracking and insurance.

Frequently Asked Questions (FAQ)

1. Does the 6ES7313-5BE00-0AB0 work without a Micro Memory Card?
No. The 6ES7313-5BE00-0AB0 requires an MMC for program and data storage. Without it, the CPU will not operate.

2. Can I expand the working memory on this CPU?
No. The integrated 32 KB work memory is fixed and non-expandable. However, you can expand the load memory using a larger MMC up to 4 MB.

3. What is the maximum cable length for digital inputs?
For standard inputs, unshielded cable can run up to 600 m. Shielded cable reaches 1000 m. For technological functions, keep shielded cable within 100 m.

4. How many analog inputs can I use for Pt100?
The CPU has one dedicated input for Pt100 resistance thermometers. The other four analog inputs are for voltage or current only.

5. Which software do I need to program this CPU?
You need STEP 7 V5.1 SP2 or newer. Supported languages include LAD, FBD, STL, SCL, GRAPH, and HiGraph®.