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6ES72141HG400XB0
Siemens

Siemens 6ES72141HG400XB0 SIMATIC S7-1200 CPU 1214C PLC | 14DI/10 Relay Outputs

MPN6ES72141HG400XB0
Active · In production

The Siemens 6ES72141HG400XB0 is a SIMATIC S7-1200 CPU 1214C compact PLC with 14 digital inputs and 10 relay outputs, onboard Ethernet/RJ45 communications, and 100kB of user memory. Rated 24VDC, operates from 20.4 to 28.8 VDC, and mounts on DIN rail in non-expandable bulk packaging. CE, cULus, FM, and UL certified with IP20 protection for use in -20°C to 60°C environments. Ships without display.

PackagingBulk
StockOut of Stock

Specifications

6ES72141HG400XB0 Technical Specifications - Column 1
ParameterValue
RoHSROHS3 Compliant
SeriesSIMATIC S7-1200
MountingDIN Rail
ExpansionNon-Expandable
Number Of Inputs14 - Digital
Ingress protectionIP20
6ES72141HG400XB0 Technical Specifications - Column 2
ParameterValue
Memory100kB
DisplayNo Display
ApprovalsCE, cULus, FM, UL
CommunicationsEthernet, RJ45
Number Of Outputs10 - Relay

Product details

Application: Compact CPU for Distributed I/O Islands

This controller targets small-to-medium standalone machines where a single DIN-rail PLC must read field sensors and drive contactors or solenoid valves. Choosing the wrong output type—solid-state instead of relay—creates a frequent commissioning failure: solid-state outputs cannot switch inductive AC loads and destroy the module faster than expected.

On-page parameter snapshot

  • MPN: 6ES72141HG400XB0
  • I/O: 14 Digital Inputs + 10 Relay Outputs
  • Supply: 24VDC (20.4 to 28.8 VDC)
  • Memory: 100kB
  • Communications: Ethernet (RJ45)
  • Operating temperature: 20°C to 60°C
  • Mounting: DIN Rail
  • Approvals: CE, cULus, FM, UL
  • IP Rating: IP20

Selection notes — BOM and electrical class

The relay outputs on this model tolerate AC and DC inductive loads, making it the default choice for hybrid machines with 24VDC digital inputs and AC contactors. If your panel uses only solid-state DC loads, the solid-state variant 6ES72141AG400XB0 eliminates relay wear, but it cannot drive AC loads without an external interface.

The 100kB memory limits the program complexity for standalone logic. If you need more program memory or faster processing, the SIMATIC S7-1200 CPU 1215 series offers 125-150kB, but it requires panel-mount form factor rather than DIN rail.

Procurement Checks

Verify your panel's 24VDC supply can deliver inrush current for all relay loads simultaneously. Confirm ground-fault coordination with upstream branch protection. Validate that no expansion modules are required—the onboard I/O is fixed.

Bench engineer's notes from raw specs

When siemens 6ES72141HG400XB0 (CPU 1214C, DC/DC/RELAY, 14DI/10D); category path: Industrial Automation and Controls > Controllers > Programmable (PLC, PAC); confirmed specs: series: SIMATIC S7-1200; Voltage - Supply: 24VDC; Mounting Type: DIN Rail; Package: Bulk; Product Status: Active is on the short list, reconcile every printed parameter (voltage tiers, current capability, package) with the schematic net names and protection devices you already committed.

Commissioning field notes

Field work should confirm grounding, shielding, and bus coordination with adjacent racks—especially when the raw record shows tight voltage or current margins.

What buyers are searching for

Buyer looking for Siemens SIMATIC S7-1200 CPU 1214C with relay outputs for a machine control panel. Compares DC-input/relay-output variant against AC-input and solid-state output models. Searches for DIN rail PLC with Ethernet for standalone machine.

Engineering notes

  • Relay outputs handle AC and DC inductive loads; solid-state outputs in other S7-1200 variants cannot switch AC without external circuitry.
  • Operating range 20.4 to 28.8 VDC tolerates supply sag from long 24VDC runs; budget voltage drop in cable sizing.
  • 100kB program memory fits basic state-machine and PID loops; larger programs require CPU 1215 series.

When to choose this part

  • Choose this DC/DC/RELAY model when your loads mix 24VDC digital inputs and AC contactors or solenoid valves.
  • Choose the 6ES72141AG400XB0 (solid-state outputs) only for all-DC, low-voltage DC load switching without inductive AC components.
  • Choose the 6ES72141BG400XB0 (AC input) only for machines using 120VAC field devices alongside relay outputs.
  • Choose the CPU 1215 series (6ES72151HF400XB0) when 150kB memory, higher processing speed, or panel-mount form factor is needed.

Limitations & things to verify

  • Non-expandable: cannot add signal or communication modules; total I/O is capped at 14 inputs and 10 outputs.
  • 100kB memory limits program complexity; larger applications require CPU 1215 or CPU 1217 variants.
  • No onboard display requires external HMI or PC-based commissioning for operator interaction.
  • Relay outputs introduce mechanical wear on high-cycle applications; solid-state output variants recommended for >1 million cycles.

Frequently asked questions

What is the difference between the 6ES72141HG400XB0 and the 6ES72141AG400XB0?

Both have 14 digital inputs and 10 outputs with 100kB memory. The HG (relay) model uses relay outputs suitable for AC and DC inductive loads. The AG (solid-state) model uses solid-state outputs limited to DC low-voltage loads without inductive AC components.

Can I expand the 6ES72141HG400XB0 with additional I/O modules?

No. The CPU 1214C is non-expandable; all 14 digital inputs and 10 relay outputs are built into the base unit. If expansion is required, select a CPU 1215 or CPU 1217 model.

What supply voltage range does the 6ES72141HG400XB0 accept?

The PLC operates from 20.4 to 28.8 VDC. Ensure your 24VDC supply stays within this range under full load conditions, including cable voltage drop.

Does this PLC have a built-in display?

No. The 6ES72141HG400XB0 has no display. Commissioning and diagnostics require TIA Portal software or an external HMI panel.

Technical resources

Lifecycle: ActiveRoHS: ROHS3 Compliant