Siemens 6ES7214-1HG40-0XB0 CPU 1214C DC/DC/Relay (6ES7214-1HG40-0XB0) CAN Electric — Industrial Automation Parts Supplier

The compact CPU at the centre of an S7-1200 station

One module carries the processor, the onboard I/O and the network port. Fourteen 24 V DC sink/source inputs read sensors and switches, ten relay outputs switch loads up to 2 A each, and two 0-10 V inputs cover basic analog signals without an extra module.

150 KB of work memory, 4 MB of load memory

The integrated work memory holds 150 KB of program and data on the current FW V4.6+ image (earlier V4.0–V4.5 units report 100 KB); 4 MB of load memory stores the project, and a SIMATIC Memory Card extends or transfers it. 14 KB is retentive, so counter and setpoint values survive a power loss.

PROFINET plus high-speed counters on the inputs

The RJ45 PROFINET port handles S7 communication, HMI traffic and programming. Six high-speed counters on the DC inputs capture fast pulse trains from encoders and flow meters. Because the outputs are relays, pulse-train (PTO/PWM) motion is handled by the DC/DC/DC version or a transistor signal board, not by the relay outputs here.

Data per the Siemens Industry Mall entry and the S7-1200 system manual; confirm the current data sheet before wiring or configuring the CPU.

Onboard I/O before expansion

Fourteen inputs, ten relay outputs and two analog inputs cover small machines outright, so many panels run without a single signal module — and up to eight modules remain available when the machine grows.

Relay outputs switch AC and DC loads directly

The DC/DC/Relay output stage closes 2 A relay contacts per channel, so the CPU can drive contactors, solenoids, indicator lamps and small motors without interposing solid-state devices — ideal where loads are mixed AC/DC.

Current S7-1200 generation, maintenance-free

The FW V4.x build carries 150 KB of work memory and a supercapacitor-backed clock that holds time for roughly 480 h, so the 14 KB retentive area keeps setpoints through power cuts with no battery to replace.

Pick by output type and memory: DC/DC/Relay versions (this page) accept 24 V DC supply and switch AC or DC loads directly through 2 A contacts, with no onboard pulse-train output; DC/DC/DC versions give transistor outputs for PTO/PWM motion pulses; AC/DC/Relay versions accept AC supply. The CPU on this page is the FW V4.x 6ES7214-1HG40-0XB0 with 150 KB work memory; the 6ES7214-1HG31-0XB0 is the discontinued FW V3.0 predecessor, and F-CPU safety variants carry the FC suffix.

OEM machines and small production lines

The onboard 14 DI / 10 relay DO / 2 AI and PROFINET port cover packaging, labeling, filling and dosing stations, so many builders ship a complete controller without adding a signal module.

Building and process skids

Pump groups, HVAC sub-panels and water or chemical skids use the relay outputs to switch contactors and valves directly, the analog inputs for level or pressure, while the supercapacitor clock keeps schedules through short power cuts.

Standardising on the current generation

Where installed -1HG31 stations are being phased out, the -1HG40 is the current Siemens generation to standardise on: same housing and terminal layout, with 150 KB work memory on FW V4.x and a clear migration path from the older build.

Why the -1HG40 is the current generation

Siemens lists the older -1HG31 (FW V3.0) as discontinued (PM490/phase-out) and names the FW V4.x -1HG40 as its successor. The two share the same housing, terminal layout and onboard I/O count, which is why Siemens describes the move as conditionally compatible rather than a drop-in.

What changes in the project

Work memory grows from 75 KB to 150 KB on the current FW V4.6+ image, the firmware generation moves to V4.x, and the project must be migrated in STEP 7 / TIA Portal to a V4.x-capable release (V16 or higher). Hardware wiring and module addresses usually carry over.

When to choose the -1HG40

If you are replacing a failed or end-of-life -1HG31, this -1HG40 is the like-for-like successor to standardize on. Tell us on the quote whether you need the -1HG40 or still require a genuine -1HG31 spare.

An independent trader that states condition in writing

We are not Siemens and not a factory-authorized distributor; what we are is transparent. Every unit supplied is genuine new, and that new condition is written on every quote, never implied.

Stock you can plan a project around

Because we trade a broad Siemens inventory, the Related Siemens list on this page shows live USD list prices with EXW Hong Kong terms, and each quote states the exact quantity available so your bill of materials stays forecastable.

Export handling on one thread

Cross-border requests are routine: a single thread covers the quote, the compliance note and the dispatch arrangement, so buyers in India, Egypt, the Netherlands, Thailand, Malaysia, the Middle East and South America do not chase separate teams.

The CPU takes one SIMATIC Memory Card (6ES7954 series), up to eight S7-1200 signal modules (SM 1221/1222/1223/1231/1232), one signal board (SB 1221/1223/1231/1232, CB 1241 RS485) and up to three CM 1241 communication modules for extra RS232 or RS422/485 ports. Programming runs in STEP 7 / TIA Portal V16 or higher, which supports this FW V4.x generation.

• Email sales@can-electric.com with the order number 6ES7214-1HG40-0XB0, quantity, delivery country, and whether this is a like-for-like replacement or a successor-migration project.
• State the condition you need — only genuine new units are supplied; the new condition is written on the quote, never implied. Units from current stock ship factory-sealed.
• Prices are USD and shipments go out from Hong Kong by DHL. If you still need a discontinued 6ES7214-1HG31-0XB0 spare for a legacy station, ask for it on the same request.

Engineers also reach this page searching for phrases like “S7-1200 1214C”, “CPU 1214C DC/DC/Relay”, “Siemens 6ES7214-1HG40-0XB0 PLC”, “1214C DC/DC/Relay datasheet”, “6ES7214-1HG40-0XB0 successor of 1HG31”, “S7-1200 1214C current generation”, “S7-1200 migration from 1HG31 to 1HG40”, “SIMATIC compact controller 14 DI 10 DO relay”, or “buy genuine Siemens 1214C relay EXW Hong Kong”. If your query is about a different S7-1200 CPU or a migration project, the selection table and FAQ above cover the 1211C / 1212C / 1215C / 1217C and the F-CPU (FC) safety variants.