The 6ES7194-2MH03-0AA0 is the straight-connector 0.3-meter PROFINET bus daisy-chain cable for ET 200AL. Straight M8 plugs at both ends plug directly into adjacent module bus ports—the shortest standard bus link for within-enclosure daisy-chaining.

Why this length for bus daisy-chaining?

Adjacent ET 200AL modules typically sit 50–150mm apart on the DIN rail. A 0.3-meter bus cable bridges that gap with a direct, clean run—no service loop, no cable tie, no slack to manage. In a densely packed I/O station, using 0.3m bus cables for every module-to-module link eliminates the visual and mechanical clutter of longer cables folded and bundled. Reserve the 1m variants (6ES7194-2MH10 series) for cross-enclosure spans.

Straight vs angled for 0.3m bus links

At 0.3m, straight connectors offer the fastest mating and easiest handling—there is little cable to flex during insertion, so the grip advantage matters. Choose the angled variant (6ES7194-2MH03-0AB0) if your enclosure door closes within 50mm of the module face or if the machine mounting surface demands flat cable routing.

Frequently Asked Questions

Is the shield connected through both M8 plug shells?

Yes. The dual-layer shield (aluminum-clad foil + tinned-copper braid) is terminated to both M8 plug shells, maintaining a continuous Faraday cage across the daisy-chain. This ensures PROFINET signal integrity even in electrically noisy machine environments with adjacent VFDs and contactors.

Can I extend the bus beyond 0.3m by connecting two of these cables together?

No—both ends are male M8 plugs. To extend a bus run, use a plug-to-socket extension cable or switch to the length that matches your required span (1m, 2m, 5m, 10m, 15m). Joining two plug-ended cables would require an additional inline coupler.