SIMATIC DP / SERIAL BUS SEGMENTATION
RS485 repeater for PROFIBUS and MPI
The Siemens 6ES7972-0AA02-0XA0 is a SIMATIC DP RS485 repeater for connecting PROFIBUS or MPI bus systems. Siemens specifies support for up to 31 nodes and a maximum transmission rate of 12 Mbit/s, with IP20 enclosure protection. The repeater supports electrical segmentation in an engineered bus topology and improved handling for installation and service. Siemens lists this exact model as PM400, announcement of product phase-out, effective from 1 October 2024; this is not the same as discontinued. Before replacement, verify the full suffix, network topology, baud rate, termination, grounding, cable routing and available enclosure conditions.
Condition, availability and warranty are Stockoems commercial information, not manufacturer commitments.
BUS SEGMENT A
Confirm cable, termination, node count and transmission rate.
REPEATER STAGE
The device couples two engineered bus sections.
BUS SEGMENT B
Maintain documented topology, grounding and diagnostic practice.
Treat the repeater as part of the complete RS485 network rather than as a generic connector. Verify termination at segment ends, node limits, baud rate, cable routing and equipotential bonding before installation or troubleshooting.
| Group | Parameter | Specification |
|---|---|---|
| Identity | Manufacturer | Siemens |
| Complete part number | 6ES7972-0AA02-0XA0 | |
| Product designation | SIMATIC DP RS485 repeater | |
| Product family | RS485 repeater for PROFIBUS | |
| Communication | Supported bus systems | PROFIBUS and MPI |
| Maximum nodes | 31 | |
| Maximum transmission rate | 12 Mbit/s | |
| Protection | Degree of protection | IP20 |
| Installation context | Protected enclosure environment | |
| Mechanical | Net weight | 0.244 kg |
| Packaging dimensions | 7.30 x 13.40 x 6.50 cm | |
| Life cycle | Siemens product status | PM400: Announcement of product phase-out |
| Phase-out effective date | 1 October 2024 | |
| Country of origin | Germany |
The repeater regenerates and electrically separates RS485 bus sections so that an engineered PROFIBUS or MPI topology can be divided into segments. Each side must follow the applicable cable, termination, node-count and transmission-rate rules.
Troubleshooting should consider both connected segments, power, grounding, connector condition and diagnostic indicators. A repeater cannot correct an invalid topology, missing termination, unsuitable cable or excessive node count.
Match the full 6ES7972-0AA02-0XA0 order code and confirm PROFIBUS or MPI topology, node count, transmission rate, termination, grounding, power and enclosure conditions. Earlier repeaters and diagnostic repeaters are not automatic substitutes.
Siemens specifies this RS485 repeater for PROFIBUS and MPI bus systems.
The official product description states a maximum of 31 nodes. Apply the documented rules to each engineered segment.
Siemens specifies a maximum baud rate of 12 Mbit/s. Cable length and topology must suit the configured rate.
No. Correct termination, cable, connectors, grounding and topology are still required on the connected segments.
IP20 protection requires an appropriate protected installation environment. Evaluate the enclosure and site conditions before mounting.
No. Siemens lists it as PM400: Announcement of product phase-out, effective 1 October 2024. That wording must not be changed to discontinued.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
STOCKOEMS / PROCUREMENT ROUTE
Our service route connects product identification, order evidence, protective handling, logistics and after-sales communication. Scope and timing are agreed for the actual order without promising an unverified inventory quantity or delivery date.
We compare the complete order code with the inquiry and available label photographs.
The written offer identifies the stated condition and available packaging evidence.
Customer system details are reviewed as purchasing support; final approval remains with the responsible engineer.
Available photographs help align the quoted item, visible label and included scope.
Packaging is selected for the component and planned transport route.
Destination, carrier options and shipment requirements are coordinated for the actual order.
Tracking information is shared after the carrier makes it available.
Agreed commercial and shipping documents are prepared for the destination requirements.
Coverage, duration and evidence requirements are stated in writing.
Contact our team and obtain authorization before returning equipment.
Order records, photographs and issue details are reviewed through one sales contact.
Inspection expectations, label checks and the supply scope are recorded before shipping preparation.
Protective handling, shipment details, tracking and documentation remain connected to the order record.
Request the complete model and suffix, actual item and label photographs, a written condition statement, included accessories, warranty terms and shipping scope.
Check consistency across the legal company name, quotation, invoice and payment beneficiary. Confirm named contacts, written order handling, shipment terms and return procedures.
Verify the exact suffix, PROFIBUS or MPI topology, node count, baud rate, cable and termination, grounding, power, enclosure protection and project diagnostics.
Investigate inconsistent labels, reused or unclear photographs, vague condition language, unexplained payment-detail changes, missing written terms or pressure to pay before evidence is supplied.
No. Ask what was inspected, which item was checked, the test method and its limits. A visual review does not establish electrical function or system compatibility.
Obtain written coverage, exclusions, evidence requirements, time limits and the return authorization procedure before purchasing. Keep the quotation, photographs and delivery record together.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
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Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
