IM 155 Spares: Is the BusAdapter Included?

An ET 200SP interface module can arrive with the correct family name and still leave a maintenance team short of the parts needed for the planned job. The question is often smaller than a controller migration: does the supplied package include the intended BusAdapter, and does the receiving record prove it? A quotation that says interface module only may not answer either question.

For IM 155 spare planning, separate the manufacturer’s order-code scope from the contents of the specific offered unit. Then compare both with the installed station’s engineering requirements. This guide addresses that purchasing boundary; it does not authorize changing an operating PROFINET station or mixing interface variants.

A bundle code describes more than the head module

The Siemens IM 155-6 PN ST equipment manual identifies 6ES7155-6AA01-0BN0 as a bundle with the BA 2xRJ45 BusAdapter and server module. This is a specific order-code statement, not a rule that every product beginning with 6ES7155 contains the same accessories.

When requesting the Siemens 6ES7155-6AA01-0BN0 interface-module bundle, ask the supplier to confirm the actual supplied contents against that scope. Unit photographs and an itemized statement are particularly important where the offered condition or packaging is not an unopened manufacturer package. A catalog description does not prove which pieces are physically present in a particular shipment.

Keep the label on the main device and the commercial bundle reference distinguishable in the record. Confusion can arise when someone photographs one component but writes the package code beside it. The receiving team should be able to reconcile the ordered bundle, individual items and agreed supply condition without guessing.

Do not transfer a bundle assumption to another variant

The 6ES7155-6AU01-0CN0 IM 155-6 PN/2 HF is a different reference. Siemens’ published catalog information lists its BusAdapter as a separately ordered item. That difference makes the quotation scope worth reading closely before comparing prices.

These two references are not presented as interchangeable replacements. Interface capabilities, the installed configuration and the applicable engineering requirements must be reviewed separately. An extra component in a package does not establish application compatibility, and a higher-feature name is not automatic permission to substitute hardware.

Ask the responsible engineer to identify the exact installed interface and BusAdapter from approved records. Procurement can then request that scope precisely. Starting with a broad family name and deciding the accessory later creates an avoidable dependency at the point where the maintenance window is already committed.

The connector is part of the supply question

A BusAdapter is not just an interchangeable cosmetic cover. Its physical connection arrangement must match the approved installation. Review the installed media and termination method with the applicable Siemens documentation. A photograph of an Ethernet socket can help identify what is present, but it does not establish every compatibility condition.

Capture photographs without disturbing an operating connection. Useful receiving evidence includes the adapter face, its readable identification and the supplied protective packaging. Do not request a live removal merely to obtain a better picture. If records cannot establish the installed arrangement, plan identification through the site’s authorized maintenance process.

List related supply items separately: interface head, BusAdapter, server module, power connection and any agreed accessories. Mark each as included, reused under engineering approval, separately supplied or unresolved. This avoids a vague complete unit description that different parties interpret differently.

Make the quotation comparison fair

Compare offers against the same itemized scope and condition. A lower headline price may cover fewer pieces, while another offer may include accessories that the plant does not need. Neither conclusion should be assumed from the price alone. Ask for clarification before treating the offers as equivalent.

Record whether the quotation concerns a manufacturer bundle or an assembled supply package. If components have been combined by a supplier, require clear identification of each and preserve that distinction in the order. Do not describe an assembled package as factory sealed without evidence. Similarly, do not infer current availability or delivery time from a public product listing.

The commercial acceptance should also identify what happens when an included item is missing or its condition differs from the agreement. Resolving that question before dispatch is more useful than discovering an ambiguous scope when the receiving team has a replacement scheduled for the following shift.

Receiving is not commissioning

A receiving check can confirm labels, quantities, visible condition and the agreed package contents. It cannot demonstrate that the station will communicate correctly in the intended application. Keep physical acceptance and engineering release as separate milestones with named owners.

Before an authorized replacement, the controls team should have the approved configuration and recovery documentation, together with the relevant device instructions. The maintenance plan should address the required safe conditions and the acceptance criteria for return to service. This article deliberately does not prescribe device-name assignment, firmware changes or online replacement steps.

After release, update the asset record with the accepted component identities and retain the supporting photographs. A future purchase should be able to reproduce the intended scope without relying on a technician’s memory of what happened to be in the previous box.

Frequently asked questions

Does 6ES7155-6AA01-0BN0 include a BusAdapter?

Siemens identifies that order code as the PN ST bundle including BA 2xRJ45 and the server module. Still confirm the actual offered unit’s contents and condition, especially when the supply is not an unopened manufacturer package.

Does every IM 155 reference have the same package contents?

No. Read the exact order-code documentation and quotation. The PN/2 HF reference discussed here has a separately ordered BusAdapter in the cited catalog information; broad family naming is insufficient for a complete purchase scope.

Can the old BusAdapter simply be reused?

Only after the responsible engineer confirms the applicable compatibility, condition and approved replacement procedure. Reuse should be an explicit decision in the maintenance plan, not an assumption made to close a missing quotation line.

What should I send for a complete spare quotation?

Provide the full interface and adapter references, available label photographs, required condition and an itemized accessory requirement. SiemensPLC can review the supply scope while your controls team retains responsibility for configuration and application acceptance.

Image: AI-generated editorial illustration, not an exact product photograph or installation reference.