Siemens 6DL1193-6AR00-0AA0 — SIMATIC ET 200SP HA BusAdapter BA 2xRJ45 | PROFINET 2-Port Switch | –40°C to +70°C | New Original

There's a component in every ET 200SP HA interface module installation that often gets overlooked at the procurement stage: the BusAdapter. The interface module itself ships without a PROFINET connection — the physical network port is deliberately separated from the IM hardware, installed as a plug-in module that snaps onto the front of the interface module. This design choice gives engineers the flexibility to select the physical PROFINET connection technology at installation time, and to replace it in the field without swapping the entire interface module.

The 6DL1193-6AR00-0AA0 is the BA 2xRJ45 BusAdapter for the ET 200SP HA series — the standard copper Ethernet version, providing two RJ45 ports through a built-in 2-port PROFINET switch. It's the most commonly specified BusAdapter variant because most process plant PROFINET installations use standard CAT5/6 copper cable infrastructure, and the RJ45 connection type is universally familiar to both instrumentation and IT teams responsible for the network.

✅ Genuine Siemens. New original, factory sealed. Country of origin: Germany.

Order Number Decoded — 6DL1193-6AR00-0AA0

6DL — SIMATIC ET 200SP HA product family. The "6DL" prefix exclusively identifies components belonging to the ET 200SP HA (High Availability) series — the process automation variant designed for extended temperature, hazardous area, and high-availability applications. This is a fundamentally different product family from standard ET 200SP, which uses a "6ES7" prefix. The two series use physically compatible BusAdapter form factors, but cross-compatibility should not be assumed without confirming against Siemens' hardware compatibility documentation.

1193 — Passive infrastructure and accessory sub-family within ET 200SP HA. Components in the "1193" group are non-I/O hardware items: carrier modules, terminal blocks, bus adapters, and bus covers. This distinguishes them from active I/O modules (6DL1131, 6DL1134, etc.).

6A — BusAdapter category and connection type family. "6A" designates BusAdapter components within the 1193 infrastructure group.

R — Physical interface type: RJ45 copper Ethernet. Within the BusAdapter family, the interface letter specifies the physical connection technology: R = RJ45 (this unit); F = FastConnect (FC) push-in termination for direct wire connection without pre-made cables; G = fiber optic LC connectors; and variants combining two different interface types (e.g., AG20 = LC + RJ45 hybrid). The "R" designation means this adapter requires standard pre-assembled RJ45-terminated PROFINET cables — the most common and cost-effective choice for copper-cabled process plants.

00 — Standard variant, no additional options.

0AA0 — Regional and certification version, standard international.

Technical Specifications

Parameter	Specification
Order Number	6DL1193-6AR00-0AA0
Product Designation	BA 2x RJ45
Product Family	SIMATIC ET 200SP HA
Function	PROFINET BusAdapter for ET 200SP HA interface modules
PROFINET Interfaces	1 PROFINET interface with 2 ports (integrated switch)
Port Type	2 × RJ45
PROFINET Protocol	PROFINET IO
Transmission Speed	100 Mbit/s full duplex (100BASE-TX)
Max. Cable Length (copper)	100 m per segment
Operating Temperature (horizontal)	–40°C to +70°C
Operating Temperature (vertical)	–40°C to +60°C
Width	20 mm
Height	69.5 mm
Depth	59 mm
Weight	Approx. 46 g
Mounting	Plug-in onto ET 200SP HA interface module
Fastening	Screw (3–3.5 mm flathead or TX10 Torx), 0.25 Nm torque
Country of Origin	Germany
Certifications	Hazardous locations approval, China RoHS, NK (Nippon Kaiji Kyokai), CCS (China Classification Society)
Condition	New Original / Factory Sealed

What a BusAdapter Actually Does — and Why It's a Separate Component

The ET 200SP and ET 200SP HA interface module design separates the PROFINET physical connection from the IM electronics. On the front face of the interface module, there's a rectangular receptacle into which the BusAdapter clips and screws. The BusAdapter provides the actual network port — the physical connector, the transceiver circuitry, and in the case of BA 2xRJ45, a 2-port built-in switch.

This separation exists for two practical reasons.

First, network topology flexibility at design or retrofit time. A copper RJ45 installation can be converted to fiber optic — for electrical isolation between stations with large ground potential differences, or for runs exceeding 100m — by simply swapping the BusAdapter without replacing the interface module. The decision between copper and fiber, or between different fiber connector types, is made at the BusAdapter level, not at the (much more expensive) interface module level.

Second, field replacement without disrupting I/O. The BusAdapter can be exchanged in the field without removing the interface module from the carrier, and in many ET 200SP HA configurations, without shutting down the I/O station. This matters in process plants where scheduled maintenance windows are rare and an unexpected BusAdapter failure — from physical damage to the RJ45 port, connector wear, or transceiver failure — needs to be resolved quickly without a full station replacement.

The 2-Port Switch Inside — How PROFINET Topology Works

The BA 2xRJ45's two RJ45 ports aren't simply two independent connections to the same network interface. They form a 2-port integrated switch, and this architecture is what enables two fundamental PROFINET topology options for ET 200SP HA stations:

Linear (daisy-chain) topology: In this configuration, one RJ45 port connects to the upstream device (the PROFINET controller or the previous station in the chain), and the second port connects to the downstream device (the next I/O station). The PROFINET frames pass through the integrated switch from port to port, traversing the entire chain of stations. This topology minimizes Ethernet infrastructure — no external switches are needed between stations, reducing hardware cost and cabinet space. The tradeoff is that a cable or station failure in the middle of the chain can isolate all downstream stations.

Star topology: Both ports connect to an external managed Ethernet switch (such as a Siemens SCALANCE), and that switch connects to the controller and other devices. This topology is more resilient — the switch provides independent paths to each station — but requires switch infrastructure at each junction point.

Ring topology with MRP (Media Redundancy Protocol): With MRP, the end of the daisy-chain loops back to the beginning, creating a physical ring. The PROFINET controller manages MRP operation. If a cable break occurs anywhere in the ring, traffic automatically reroutes in the opposite direction around the ring, restoring full communication — typically within 200ms for standard MRP or 30ms for fast MRP. This topology is common in ET 200SP HA installations where network availability is a system requirement, because it eliminates the single cable break as a cause of station communication loss.

The BA 2xRJ45's integrated switch handles frame forwarding between its two ports transparently — no PROFINET configuration is needed specifically for the switch ports themselves. The topology is determined at the PROFINET network planning level, and the BusAdapter simply connects the physical cables.

BA 2xRJ45 vs Other ET 200SP HA BusAdapter Variants

The ET 200SP HA BusAdapter family offers four physical interface technologies. Choosing the right one depends on the cable infrastructure, distance requirements, and environmental conditions at the installation site.

BusAdapter	Order Number	Interface	Max Distance	Best For
BA 2xRJ45	6DL1193-6AR00-0AA0	2 × RJ45 copper	100 m	Standard plant copper PROFINET, most common choice
BA 2xFC	6DL1193-6AF00-0AA0	2 × FastConnect push-in	100 m	Installations without pre-made cables; direct wire termination
BA 2xLC	6DL1193-6AG00-0AA0	2 × LC fiber optic	Up to 26 km (SM)	Long distances, high EMC environments, galvanic isolation
BA LC/RJ45	6DL1193-6AG20-0AA0	1 × LC + 1 × RJ45	Mixed	Mixed copper/fiber topology transitions

For most process plant automation with existing copper Ethernet infrastructure and station-to-station distances under 100m, the BA 2xRJ45 is the appropriate choice. The decision to use fiber (LC or FC variants) is driven by three conditions: distances exceeding 100m between stations; significant ground potential differences between stations (common in large industrial sites where long cable runs create ground loops); or high-intensity EMC environments such as large motor drives, arc furnaces, or high-voltage switching equipment located near the PROFINET cable runs.

The FastConnect (FC) variant eliminates the need for pre-terminated RJ45 cables — useful in remote field locations where cable assembly tools aren't available, or when the exact required cable length is determined on-site rather than in advance. FC uses a push-in termination directly on the raw Ethernet wire.

6DL1193-6AR00-0AA0 vs 6ES7193-6AR00-0AA0 — Critical Ordering Distinction

This is the most important product confusion issue to address for anyone sourcing ET 200SP BusAdapters. The two part numbers look nearly identical:

6DL1193-6AR00-0AA0 — BA 2xRJ45 for ET 200SP HA (this product, 6DL prefix)
6ES7193-6AR00-0AA0 — BA 2xRJ45 for standard ET 200SP (6ES7 prefix)

Both BusAdapters use the same physical form factor and the same RJ45 PROFINET interface. They are physically interchangeable in terms of mounting — the BA will mechanically fit on either series' interface module. However, Siemens specifies each BusAdapter for use with its corresponding IM series, and the extended temperature certification (–40°C to +70°C for the HA version vs –30°C to +60°C for the standard version) is the most significant functional difference. In hazardous area installations, the 6DL version's hazardous locations approval is also series-specific.

For ET 200SP HA interface modules (6DL1155 series), always order the 6DL1193-6AR00-0AA0. For standard ET 200SP interface modules (6ES7 155 series), order the 6ES7193-6AR00-0AA0. Using the wrong variant won't prevent the station from communicating under normal conditions, but it compromises the temperature certification and hazardous area approval validity of the installation.

Typical Applications

Offshore oil and gas platforms — ET 200SP HA I/O stations in Zone 2 classified process areas, where the BusAdapter's hazardous locations certification is part of the complete station's area classification approval. Cable runs between I/O drops on a platform often stay well within the 100m copper limit, making the RJ45 variant the natural choice.

Onshore refineries and chemical plants — PROFINET I/O drops in process units for PCS 7 or TIA Portal-based S7-1500 HA control systems. Process plant instrument cable infrastructure is predominantly copper for distances typical of unit-level I/O distribution (individual drops serving a few dozen field devices).

LNG and gas processing terminals — control system I/O in non-classified or Zone 2 areas where the extended low-temperature capability (–40°C) is relevant for cold-climate outdoor cabinet installations, and the BusAdapter forms part of the certified cold-climate station assembly.

Maritime vessel automation — the NK and CCS class society certifications on this BusAdapter, confirmed in the official Siemens datasheet, make it suitable for marine applications requiring class society approval of automation equipment.

Power generation plants — distributed I/O for turbine control, boiler instrumentation, and balance-of-plant systems using S7-1500 HA controllers, where the PROFINET network is built on copper plant Ethernet infrastructure.

❓ FAQ — Siemens 6DL1193-6AR00-0AA0

Q1: What's the difference between 6DL1193-6AR00-0AA0 and 6ES7193-6AR00-0AA0 — can they be used interchangeably?

The prefix tells the story: 6DL = ET 200SP HA (High Availability, process automation), 6ES7 = standard ET 200SP (discrete/standard process). Both are physically BA 2xRJ45 BusAdapters with the same form factor and RJ45 interface. The key differences are the temperature specification (–40°C to +70°C for the 6DL HA version vs –30°C to +60°C for the standard 6ES7 version) and the certifications — the 6DL version carries hazardous locations and maritime approvals that the standard version does not. For ET 200SP HA interface modules (6DL1155 series) in certified installations — especially hazardous area or marine applications — using the 6ES7 version invalidates the installation's certification, even though it will physically fit and functionally communicate. Always match the BusAdapter prefix to the IM series prefix.

Q2: Why does the ET 200SP HA interface module need a separate BusAdapter — doesn't it have a built-in Ethernet port?

The ET 200SP HA interface module ships without an onboard PROFINET connector. The BusAdapter slot on the front of the IM is where the physical network connection is made. This design is intentional: it decouples the network physical layer (copper RJ45, fiber LC, FastConnect wire termination) from the IM electronics, allowing the connection technology to be selected or changed without replacing the interface module. In practice, this means a copper-connected station can be converted to fiber optic by swapping the BusAdapter alone — not the IM. It also means a damaged RJ45 port (a common physical failure from cable yanking or connector wear) can be resolved by replacing only the BusAdapter, which is a fraction of the cost of an interface module.

Q3: The datasheet shows two ports but only one PROFINET interface — what does that mean for network topology?

The two RJ45 ports share one PROFINET interface through an integrated 2-port switch. Both ports connect to the same PROFINET IO device (the IM); they don't create two independent interfaces. What the two-port switch enables is daisy-chain topology — you connect the upstream cable into port 1 and the downstream cable to the next station out of port 2, without needing an external switch at each station. This makes linear PROFINET chains practical and cost-effective. With ring topology and MRP (Media Redundancy Protocol) enabled at the PROFINET controller level, the two ports also allow the ring to close — the last station's second port connects back toward the first station, forming the redundant ring path.

Q4: Can I replace a BusAdapter while the ET 200SP HA station is in operation?

In most ET 200SP HA configurations, yes — BusAdapter replacement is designed as a field maintenance procedure without requiring a full station shutdown. The procedure: disconnect the PROFINET cables from the BusAdapter, loosen the two screws holding the BusAdapter to the IM (3–3.5mm flathead or TX10 Torx, 0.25 Nm torque), pull the BusAdapter straight out from the IM front receptacle, install the new BusAdapter, re-tighten the screws, and reconnect the cables. The station will experience a brief PROFINET communication interruption during the swap — the duration depends on how the PROFINET network and controller are configured (ring topology with MRP can minimize this). For critical process control stations, plan the swap during a process condition that tolerates a brief I/O communication interruption, or use ring topology to maintain communication continuity during the swap.

Q5: Is 100m copper cable length a hard limit, and what happens if I need to go further?

The 100m limit per copper segment is the IEEE 802.3 standard for 100BASE-TX over CAT5 cable — it applies to any PROFINET or Ethernet copper segment. If your station-to-station distance exceeds 100m, you have two options: (1) Place a managed Ethernet switch (e.g., Siemens SCALANCE X series) as a repeater at the 100m point to extend the copper run; (2) Switch to a fiber optic BusAdapter — the BA 2xLC (6DL1193-6AG00-0AA0) or BA LC/RJ45 (6DL1193-6AG20-0AA0) variants support multi-mode fiber runs up to several hundred meters and single-mode fiber up to several kilometers, eliminating the distance limitation entirely while also providing galvanic isolation between stations.

Q6: What PROFINET topologies does this BusAdapter support — can it be used in a redundant ring?

The BA 2xRJ45 supports all standard PROFINET copper topologies: linear (daisy-chain), star (via external switch), and ring with MRP (Media Redundancy Protocol). For ring topology, the ET 200SP HA interface module must be configured as an MRP client (or manager, for the controller end), and the PROFINET ring is configured in TIA Portal or SIMATIC Manager. The BusAdapter itself is topology-agnostic — both its ports behave identically as switch ports; the topology is determined by how the cables are connected and how the PROFINET IO controller's network configuration is programmed. For PCS 7 HA systems with redundant PROFINET rings, confirm the specific topology requirements against the Siemens PCS 7 engineering guidelines for ET 200SP HA.

Q7: Is this BusAdapter compatible with standard ET 200SP interface modules (6ES7 155 series)?

Physically, yes — the 6DL1193-6AR00-0AA0 will fit on standard ET 200SP IM slots (6ES7 155-6xx). The PROFINET communication will function. However, the correct BusAdapter for standard ET 200SP IMs is 6ES7193-6AR00-0AA0. Using the 6DL HA version on standard ET 200SP hardware is technically over-specified (the HA version has wider temperature and hazardous area certifications), which doesn't cause any functional problem but creates a documentation mismatch in your spare parts inventory and potentially causes confusion when ordering replacements. For a clean system design and accurate spare parts management, use 6DL BusAdapters with 6DL IMs (ET 200SP HA) and 6ES7 BusAdapters with 6ES7 IMs (standard ET 200SP).

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