New Siemens 6ES7193-6AR00-0AA0 or 6ES7193-6AROO-OAAO Bus Adapter

Siemens 6ES7193-6AR00-0AA0 | SIMATIC ET 200SP BusAdapter BA 2×RJ45 — 2-Port PROFINET / 100m Cu / Snap-On / IP20 / 20mm

What the BusAdapter Does in the ET 200SP System

In the SIMATIC ET 200SP distributed I/O architecture, the interface module (IM 155-6PN) is the communication gateway — it connects the I/O modules in the ET 200SP node to the PROFINET network. The BusAdapter is the physical connector component that attaches to the IM's PROFINET port and provides the actual cable connection. Without a BusAdapter fitted, the IM cannot connect to the PROFINET network.

The 6ES7193-6AR00-0AA0 — BA 2×RJ45 — provides two standard RJ45 sockets on the IM's PROFINET port. Both sockets represent a single PROFINET network connection with an integrated two-port switch. This allows the ET 200SP node to connect into a PROFINET line topology — cable in from one previous device, cable out to the next device — without requiring an external switch. The ET 200SP passes the PROFINET signal from port to port at full 100Mbps speed.

The BusAdapter separates from the IM without tools — it snaps on and unsnaps from the IM's front connector. This matters for maintenance: if the PROFINET cable type needs to change (switching from standard RJ45 to FastConnect or to an SC fibre adapter), only the BusAdapter is replaced, not the IM and its associated I/O wiring. The field cable attaches to the BusAdapter, so replacing the BusAdapter does require the PROFINET cable to be reconnected.

Key Specifications

BA 2×RJ45 vs Other ET 200SP BusAdapter Variants

The cable type in the installation determines which BusAdapter is appropriate. The 6ES7193-6AR00-0AA0 uses standard RJ45 connectors — the most common wiring choice for cabinet-to-cabinet and cabinet-internal PROFINET connections in standard environmental conditions.

FAQ

Q1: Can a BusAdapter be changed without interrupting the PROFINET network on that node?

No. Replacing the BusAdapter requires disconnecting the PROFINET cables from it, which disconnects the ET 200SP node from the PROFINET network and interrupts communication with all I/O modules in that node. The IO controller detects the device as absent and may set the controlled outputs to their fail-safe state. Plan the replacement during a planned maintenance window.

Q2: How many PROFINET nodes does the BA 2×RJ45 represent on the network?

One. The two RJ45 ports form an integrated two-port switch — they represent a single PROFINET device address (the ET 200SP IM). The switch allows the node to participate in a line topology (daisy-chain), where one port connects to the upstream device and the other connects downstream. Both ports belong to the same PROFINET device; they do not add two separate network devices.

Q3: Can the 6ES7193-6AR00-0AA0 be used with any ET 200SP interface module?

The BA 2×RJ45 is compatible with ET 200SP IM 155-6PN interface modules that have the BusAdapter port. Check the specific IM's documentation to confirm BusAdapter compatibility — not all ET 200SP interface module variants use interchangeable BusAdapters. The BA connector type must match the IM's physical adapter socket.

Q4: What cable standard is required for the RJ45 ports on the BA 2×RJ45?

Standard PROFINET-rated copper cables are used — Siemens' Industrial Ethernet IE cable (Cat 5 compatible, AWG 22/7 shielded twisted pair) is the standard recommendation for PROFINET field wiring. Standard office Ethernet patch cables are not rated for industrial PROFINET environments. Use Siemens-approved PROFINET cabling for reliable operation.

Q5: The PROFINET node shows a connection fault after the BusAdapter was replaced. What should be checked?

Verify both RJ45 connectors are fully seated in the BusAdapter ports — an incompletely inserted RJ45 prevents link establishment. Check the cable for damage introduced during replacement. Confirm the BusAdapter is fully snapped onto the IM's connector. If a different BusAdapter variant was fitted by mistake, replace it with the correct BA 2×RJ45 — the IM detects a BusAdapter type mismatch as a configuration fault.