Siemens 6ES7214-1BD23-0XB0 SIMATIC S7-200 CPU 224 AC/DC/Relay

Overview

SIEMENS SIMATIC S7-200

6ES7214-1BD23-0XB0 SIMATIC S7-200 CPU 224 AC/DC/Relay

Control compact machines with an AC-powered CPU, 14 onboard DC inputs, 10 relay outputs and an integrated RS485 communication port.

At a Glance

Brand	Siemens
Model	6ES7214-1BD23-0XB0
Product Type	Compact programmable controller
Core Function	Execute machine-control logic
Application	S7-200 automation systems

AC-powered controller

The CPU accepts 120/240 V AC nominal power and provides a 24 V DC sensor supply.

Relay field switching

Ten dry-contact outputs switch compatible AC or DC loads.

Expandable S7-200 platform

Up to seven expansion modules extend the local I/O within the available power budget.

Product Overview

6ES7214-1BD23-0XB0 is the AC/DC/relay version of the SIMATIC S7-200 CPU 224. It combines the user program, 14 digital inputs, 10 relay outputs and one RS485 interface in a compact controller with removable terminal connections.

The CPU provides 8 kbytes of user data and up to 12 kbytes of program space when RUN-mode editing is disabled, with high-speed counting, built-in real-time clock and optional memory or battery cartridges for machine-control tasks.

Ordering focus: Select the AC-supply relay-output version and check the expansion power budget, output loads and existing STEP 7-Micro/WIN project before replacement.

Key Functions

Run local machine logic

The integrated CPU executes Boolean instructions in 0.22 µs and provides timer, counter and interrupt resources for sequence control.

Connect field inputs and switched loads

Fourteen 24 V DC inputs acquire machine signals and ten relay contacts operate compatible loads without requiring an external digital-output module.

Expand and communicate

Seven expansion modules can be connected within the power budget, while the RS485 port supports PPI, MPI slave communication and programmable Freeport protocols.

Official Specifications

Supply Voltage and Frequency	Nominal 120/240 V AC; permitted 85 to 264 V AC at 47 to 63 Hz
Onboard Digital Inputs	14 channels, 24 V DC, sink/source
Onboard Relay Outputs	10 dry contacts; maximum 2 A per point
Relay Switching Voltage	5 to 30 V DC or 5 to 250 V AC
User Program Capacity	8192 bytes with RUN-mode editing; 12288 bytes without RUN-mode editing
User Data Capacity	8192 bytes
Local Expansion Capacity	Up to 7 expansion modules within the CPU power budget
Serial Communication Port	1 RS485 port; PPI and MPI slave rates of 9.6, 19.2 or 187.5 kbaud
Freeport Communication Rate	1.2 to 115.2 kbaud
Timer and Counter Resources	256 timers with 1, 10 or 100 ms resolution and 256 backed-up counters
Boolean Instruction Time	0.22 µs
High-Speed Counter Capability	6 single-phase counters up to 30 kHz; 4 two-phase counters up to 20 kHz at the specified input levels
Input Filter Delay	Selectable from 0.2 to 12.8 ms
Relay Switching Delay and Frequency	Maximum 10 ms delay; maximum pulse frequency 1 Hz
Available Expansion-Bus Supply	660 mA at 5 V DC
Available Sensor Supply	280 mA at 24 V DC after internal relay and communication requirements
Power Dissipation	10 W
Dimensions and Weight	120.5 × 80 × 62 mm (W × H × D); 410 g

Official source:Siemens product manual and technical specifications

Frequently Asked Questions

Can I power 6ES7214-1BD23-0XB0 from a 230 V AC control supply?

Yes, the AC-powered CPU accepts 85 to 264 V AC at 47 to 63 Hz.

Does 6ES7214-1BD23-0XB0 support Relay field switching for mobile equipment?

Yes, the relay contacts support 5 to 30 V DC or 5 to 250 V AC with a maximum current of 2 A per point.

Why does enabling RUN-mode editing reduce the program space of 6ES7214-1BD23-0XB0?

Program capacity is 8192 bytes with RUN-mode editing enabled and 12288 bytes when it is disabled.

How many expansion modules can I attach to 6ES7214-1BD23-0XB0?

Up to seven expansion modules can be connected when the complete station remains within the CPU power budget.

Can I generate high-speed positioning pulses from the relay outputs of 6ES7214-1BD23-0XB0?

No, the high-speed pulse-output function requires a CPU with DC transistor outputs.

Which engineering software should I use with 6ES7214-1BD23-0XB0?

Use STEP 7-Micro/WIN to develop and download the S7-200 application.

Can the RS485 port of 6ES7214-1BD23-0XB0 communicate with a device using a custom serial protocol?

Yes, Freeport operation allows program-controlled serial communication at rates from 1.2 to 115.2 kbaud.

Compatibility & Ordering Notes

Before ordering 6ES7214-1BD23-0XB0: Match the AC supply, relay-output wiring and CPU 224 project type, then calculate the 5 V expansion and 24 V sensor loads before selecting additional modules.

Compatibility Checklist for 6ES7214-1BD23-0XB0

• Use the CPU 224 AC/DC/relay wiring arrangement for the terminal groups.
• Check the relay contact voltage, current and switching-frequency limits.
• Keep the expansion-bus and sensor loads within the available supply budgets.
• Retain the STEP 7-Micro/WIN project and required memory or battery cartridge configuration.

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