Does PCS 7 V8.1 Support the CPU 414-4H 6ES7 414-4HJ04-0AB0?

Yes. Siemens' Released Modules (V8.1 SP1) lists the exact order number 6ES7 414-4HJ04-0AB0, CPU 414-4H, firmware V4.x, in its H-CPU section labeled “PCS 7 V6.1 and later.” That documentation contradicts the claim that this 4.x H-CPU is categorically unsupported by PCS 7 V8 and later. Confirm the PCS 7 service pack, exact CPU order number and firmware against the matching release list before engineering the redundant station.

Compatibility answer

In Siemens' Released Modules (V8.1 SP1), section 17.8 is titled “H-CPU as of 08/04 (PCS 7 V6.1 and later).” Under that section, Siemens lists product CPU 414-4H, article number 6ES7 414-4HJ04-0AB0, firmware V4.x. The manual describes it as an S7 CPU with high-availability and fail-safe capability. This is direct evidence that the exact order number appears in the PCS 7 V8.1 SP1 released-module documentation.

How to verify the entry

Use the Released Modules document matching the installed PCS 7 release and service pack; the checked document is Released Modules (V8.1 SP1), edition 11/2016.
In section 17.8, compare the complete CPU article number with the nameplate: 6ES7 414-4HJ04-0AB0.
Compare the firmware version with the listed V4.x entry; do not substitute a similar 414 CPU or a different order-number suffix.
Confirm the complete H-station hardware and software configuration using the same PCS 7 release documentation before download or commissioning. The CPU row confirms this CPU type's listing; it does not certify every possible rack, synchronization, interface, or project configuration.

Why the earlier compatibility claim is misleading

The CPU is listed under the S7-400 H-CPU category for hardware introduced in 08/04, with PCS 7 V6.1 and later stated in that category heading. Its “V4.x” firmware is the listed version range; the manual does not say that the CPU is rejected because it is older than V5 H-CPU models. The exact release-list entry is stronger evidence than a broad statement that PCS 7 V8 requires only newer CPU families.

If the CPU does not appear in the installed hardware catalog

A catalog or configuration problem is not, by itself, proof that the CPU is unsupported. First verify the complete MLFB, installed PCS 7 release and updates, and the released hardware catalog/documentation for that release. If the exact CPU/firmware combination is absent from the applicable list or HW Config catalog, hold commissioning changes and resolve the discrepancy with version-matched Siemens documentation or support. Do not substitute a newer CPU or alter the project solely on the basis of the unverified claim.

Verification

Record the CPU's full article number and firmware from the actual hardware, then match both against the PCS 7 release's Released Modules list. For the checked V8.1 SP1 documentation, the entry is CPU 414-4H, 6ES7 414-4HJ04-0AB0, V4.x, section 17.8. Separately validate the redundant station's remaining hardware and configuration against the applicable PCS 7 V8.1 manuals. The released-module entry confirms inclusion in that list; it is not a commissioning test or blanket approval for every station design.

Limitations and Operational Precautions

The directly opened document is Released Modules (V8.1 SP1), not every PCS 7 V8.1 service pack or update. The user did not provide the station's exact firmware, redundant-pair details, or a screenshot of the local hardware catalog. Confirm those details and the documentation for the installed build before making configuration or hardware changes. Changes to a running redundant controller require a project-specific operational plan, backups, and site change control.

Engineer FAQ

What CPU does article number 6ES7 414-4HJ04-0AB0 identify in Siemens' list? The V8.1 SP1 document calls it CPU 414-4H and lists firmware V4.x.

Does the official list include this CPU for PCS 7 V8.1 SP1? Yes. It appears in section 17.8, whose heading specifies H-CPUs as of 08/04 for PCS 7 V6.1 and later.

Does the source reply's statement that no V4.5 H-CPU can be used on PCS 7 V8+ match the list? No. The exact MLFB is listed with firmware V4.x in the V8.1 SP1 released-module document.

Is this an S7-400H or an S7-410-5H CPU? Siemens identifies this article number as CPU 414-4H in its S7-400 H-CPU list; it should not be conflated with the later CPU 410-5H or 414-5H product.

Does the row certify the whole redundant station? No. It confirms the CPU entry. Check the rest of the station hardware, firmware, and configuration in the release-matched documentation.

What should I compare on the physical CPU? Compare the complete 6ES7 414-4HJ04-0AB0 order number and firmware version; a similar CPU family name is insufficient.

What does the V4.x text mean in this entry? It is the firmware range printed in Siemens' Released Modules table. Check the device's actual firmware and the applicable release documentation.

What if HW Config does not show the CPU? Verify the installed PCS 7 version/update and released catalog first; absence in one local catalog view does not overturn the explicit list entry by itself.

Can I apply this conclusion to every PCS 7 8.x installation? The directly checked list is V8.1 SP1. Use the manual matching the specific PCS 7 release and updates in service.

Do I need to replace this CPU with an S7-41x-5H because the reply called it old? The cited Siemens list does not support that as a general requirement; first validate the exact installed configuration against the applicable Released Modules documentation.

Technical References

Siemens, Released Modules (V8.1 SP1), Offer Overview, 11/2016, A5E34239238-AD, §17.8 “H-CPU as of 08/04 (PCS 7 V6.1 and later),” pp. 122–123: https://cache.industry.siemens.com/dl/files/635/109752635/att_940933/v1/S7pcshwb.pdf

Does PCS 7 V8.1 Support the CPU 414-4H 6ES7 414-4HJ04-0AB0?