6ES7214-1HG31-0XB0 | SIMATIC S7-1200 Compact CPU with Relay Outputs

6ES7214-1HG31-0XB0 – SIMATIC S7-1200 CPU 1214C DC/DC/Relay

This compact CPU packs 14 digital inputs, 10 relay outputs, and 2 analog inputs. It runs on 24 V DC and includes 75 KB of program memory. Ideal for small to medium automation tasks.

Main Features

• Brand: Siemens
• Model: 6ES7214-1HG31-0XB0
• Series: SIMATIC S7-1200
• Type: Compact CPU (DC/DC/Relay)
• Onboard I/O: 14 DI (24V DC), 10 DO (Relay 2A), 2 AI (0-10V DC)
• Memory: 75 KB program / 4 MB load
• Power supply: 20.4 – 28.8 V DC

Technical Specifications – Tree View

• Supply voltage
  • Rated: 24 V DC
  • Range: 20.4 … 28.8 V DC
• Current consumption
  • Typical: 500 mA
  • Max: 1.2 A (at 24 V DC)
  • Inrush: 12 A (at 28.8 V)
• Power loss
  • Typical: 12 W
• Memory
  • Work memory: 75 KB (integrated)
  • Load memory: 4 MB (integrated)
  • Retentive data: 10 KB max
• Processing speeds
  • Bit: 0.085 µs/instruction
  • Word: 1.7 µs/instruction
  • Float: 2.5 µs/instruction
• Digital inputs (14)
  • 6 x high-speed counters (HSC)
  • Input delay: 0.2 … 12.8 ms (adjustable)
  • Max cable length: 500 m (shielded)
• Digital outputs (10 relays)
  • Switching capacity: 2 A (resistive)
  • Max switching frequency: 1 Hz
  • Mechanical life: 10 million cycles
• Analog inputs (2)
  • Range: 0 … 10 V DC
  • Resolution: 10 bit
  • Conversion time: 625 µs per channel
• Communication
  • 1 x PROFINET (Ethernet)
  • Supports: PROFIBUS, AS-Interface, MODBUS
  • Open IE: TCP/IP, ISO-on-TCP, UDP
  • Web server with user-defined pages
• Integrated functions
  • 6 counters (max 100 kHz)
  • 4 alarm inputs
  • PID controller
  • Frequency meter
• Environment & approvals
  • Operating temp: –20 … +60 °C (horizontal)
  • Protection: IP20
  • Approvals: CE, UL, cULus, FM, CSA, RCM, Marine
  • EMC: Class A (industrial), Class B (with measures)
• Dimensions & weight
  • Width: 110 mm, Height: 100 mm, Depth: 75 mm
  • Weight: approx. 435 g

Manager’s Insight – Expert Review

“The 6ES7214-1HG31-0XB0 is a versatile workhorse for small PLC applications. Its relay outputs handle up to 2 A, making it ideal for direct actuator control. The integrated web server simplifies remote diagnostics. We recommend it for packaging, conveyor, and simple motion tasks. A cost-effective, reliable choice for OEMs and system integrators.”

Typical Applications & Compatible Devices

• Small conveyor systems
• Packaging machines
• HVAC control panels
• Pump and fan control
• Simple positioning (with HSC)
• Works with: ET 200, SINAMICS drives, HMI panels

Frequently Asked Questions (FAQ)

• Can I expand the memory?
  • No, the work memory is fixed at 75 KB.
• What programming software is required?
  • STEP 7 V11 SP2 or higher (TIA Portal).
• Does it support MODBUS?
  • Yes, MODBUS is supported via library.
• How many modules can I connect?
  • Max 3 comm. modules, 1 signal board, 8 signal modules.
• Is the real-time clock battery-backed?
  • Yes, backup time is 480 hours (typical).

Selection Guide – Quick Tips

• Choose this CPU for relay output applications (10 relays).
• For transistor outputs, select 6ES7214-1AG31-0XB0.
• Need more analog I/O? Add a signal board (SB 1232).
• Use with a 24 V DC power supply (20.4 … 28.8 V).
• We offer 12-month warranty and fast shipping via FedEx, UPS, DHL.

Compare with Similar Models

• 6ES7214-1AG31-0XB0 – DC/DC/DC (transistor outputs)
• 6ES7214-1BG31-0XB0 – AC/DC/Relay (120/230 V AC supply)
• 6ES7212-1AE31-0XB0 – CPU 1212C (smaller I/O)
• 6ES7215-1AG31-0XB0 – CPU 1215C (more analog I/O)

For inquiries: sales@powergearx.com | +86 18030005825 (WhatsApp)

Copyright © 2026 Powergear X Automation Limited. All rights reserved.
Original Source: https://www.powergearx.com/