The exact Siemens reference matters: 6ES7314-6BH04-0AB0 is a SIMATIC S7-300 CPU 314C-2 PtP. It must not be confused with the separate CPU 314C-2 DP reference.
EDITORIAL REVIEW 路 4 SEPTEMBER 2026
BH04 means PtP.
Do not turn it into DP.
Correct identification protects the spare request, the interface assumption and the migration discussion.
Correct the product identity first
Siemens identifies 6ES7314-6BH04-0AB0 as CPU 314C-2 PtP with an integrated RS485 point-to-point interface. The DP variant uses a different MLFB, 6ES7314-6CH04-0AB0. This distinction has been corrected from the original headline. Browse the SIMATIC S7 catalogue only after copying the complete reference from the installed label.
The MLFB, firmware version, memory card, front connectors and connected interface all matter. A visually similar S7-300 CPU is not automatically interchangeable.
Read the integrated functions in context
| Published characteristic | 6ES7314-6BH04-0AB0 context | Procurement implication |
|---|---|---|
| Work memory | 192 KB in the reviewed Siemens product information. | Match the full MLFB and hardware/firmware evidence. |
| Communications | MPI plus integrated RS485 PtP. | Record connected devices, protocol and project configuration. |
| Integrated I/O | 24 DI, 16 DO, 4 AI, 2 AO and one Pt100 input. | Document front connectors and field wiring context. |
| Technology functions | Four counters up to 60 kHz are listed. | Do not assume the application uses every integrated function. |
Treat lifecycle status as dated evidence
The reviewed Siemens product page marks this item as a spare part and gives a product-cancellation date of 1 October 2025 under its lifecycle information. That status should be checked again when sourcing, because regional availability and service conditions may change. The broader Siemens lifecycle and EOL guide explains how to separate manufacturer status from supplier stock.
Prepare an evidence-led spare enquiry
Full code from the installed unit.
Hardware and firmware evidence.
Interfaces, I/O and memory card.
Condition, test scope and delivery.
Use the Siemens parts page to locate relevant families, then require offered-unit photographs and a specific quotation. For help structuring the request, contact Moore Automated with the full evidence packet.
Watch the original article videoVIEW
The original published video is retained as supplementary company content; it is not a model-specific compatibility or lifecycle approval.
Frequently asked questions
01What is 6ES7314-6BH04-0AB0?
It is a SIMATIC S7-300 CPU 314C-2 PtP with integrated I/O and an RS485 point-to-point interface.
02Is 6ES7314-6BH04-0AB0 a CPU 314C-2 DP?
No. The reviewed Siemens information identifies BH04 as PtP; the separate CH04 reference is the DP version.
03What memory is listed for this CPU?
The reviewed product information lists 192 KB of work memory. Confirm current manufacturer documentation for the exact unit.
04Is the CPU still an active current product?
The reviewed Siemens page lists it as a spare part with cancellation dated 1 October 2025. Recheck status when sourcing.
05Can another S7-300 CPU replace it directly?
Do not assume so. Compare interfaces, I/O, memory, firmware, project configuration and validation requirements.
06What should I send with an enquiry?
Send the full MLFB, readable labels, hardware and firmware evidence, memory card and connector context, quantity, condition and delivery need.
Build the request around the installed MLFB.
One complete packet reduces ambiguity between PtP and DP variants and makes offered-unit checks more useful.
Submit the identification packetEditorial scope: independent maintenance, procurement and company guidance reviewed 4 September 2026. Technical context reviewed against the Siemens product page and technical specification for 6ES7314-6BH04-0AB0. Recheck current regional lifecycle data.
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