Siemens 6ES72141AG400XB0 — S7-1200 CPU 1214C AC/DC/Solid-State
Catalog Identity and Ordering Context
The 6ES72141AG400XB0 is a Siemens S7-1200 compact CPU in the CPU 1214C family. The MPN prefix "6ES7" identifies it as a Siemens SIMATIC automation component; the "214" designates the 1214 performance class, "1A" indicates the AC power supply variant with DC solid-state outputs, and the "-400XB0" suffix reflects the standard firmware and hardware release for this form factor. The 14 digital inputs and 10 solid-state outputs are integral to this specific model designation.
Parameter Summary
| Parameter | Value |
|---|---|
| Digital inputs | 14 |
| Output type | Solid-state |
| Digital outputs | 10 |
| Work memory | 100 kB |
| Operating temperature | −20 °C to +60 °C |
| Mounting | DIN Rail |
| Communications | Ethernet (RJ45) |
| Ingress protection | IP20 |
| Expandability | Non-expandable |
| Approvals | CE, cULus, KC, UL |
| Encapsulation | Bulk |
Engineering Verification Checklist
- Confirm supply voltage matches the AC input rating of the 1214C AC/DC/Solid-State variant
- Verify 14 digital input wiring matches the DC input threshold requirements
- Validate output load compatibility with solid-state output rating (no relay-compatible loads)
- Check that the 100 kB work memory satisfies the application program size estimate
- Confirm DIN Rail enclosure clearance accommodates the non-expandable module width
- Verify Ethernet port assignment matches network architecture (CIP or PROFINET roles)
- Confirm operating environment stays within −20 °C to +60 °C range
- Ensure IP20 rating is acceptable for the intended enclosure; no wash-down or outdoor exposure
- Validate that non-expandable architecture meets the machine or process I/O count without local expansion
Similar Catalog Parts
The table below presents in-catalog comparison rows for side-by-side screening. These are not OEM-endorsed replacements; the reader must perform their own qualification.
| MPN | Inputs | Outputs | Memory | Operating Temp | Similarity |
|---|---|---|---|---|---|
| 6ES72141AG400XB0 | 14 Digital | 10 Solid State | 100 kB | −20 °C to +60 °C | — |
| 6ES72141HG400XB0 | 14 Digital | 10 Relay | 100 kB | −20 °C to +60 °C | 0.92 |
| 6ES72141BG400XB0 | 14 Digital | 10 Relay | 100 kB | −20 °C to +60 °C | 0.92 |
| 6ES72151AF400XB0 | 14 Digital | 10 Digital | 150 kB | 0 °C to +55 °C | 0.84 |
Why they appear similar: All four parts share the same 14-digital-input configuration, 100–150 kB work memory, DIN Rail mounting, Ethernet communications, and non-expandable architecture. They differ in output type (solid-state vs relay) and, for the 6ES72151AF400XB0, in memory capacity and temperature range.
FAQ
Q: How does the solid-state output on the 6ES72141AG400XB0 differ from the relay outputs on the HG and BG variants?
A: The AG variant provides solid-state outputs, which are switching-semiconductor based. The HG and BG variants use relay outputs, which offer galvanic isolation and AC load compatibility but have mechanical wear considerations. Load type and switching frequency determine which output technology is appropriate.
Q: Can the 6ES72141AG400XB0 be expanded with additional I/O modules?
A: No. The catalog entry lists this unit as non-expandable. If modular I/O expansion is required, a different S7-1200 CPU model or a higher-tier PLC platform would be needed.
Q: What distinguishes the 6ES72151AF400XB0 (CPU 1215 FC) from the primary unit?
A: The 6ES72151AF400XB0 is a CPU 1215 variant with 150 kB work memory, a wider operating temperature band (0 °C to +55 °C), and relay output configuration per the catalog record. It also carries FM approval in addition to the primary unit's CE, cULus, KC, and UL listings.