Description
The 6ES5307-0MM11 is a Siemens-manufactured fiber optic media module belonging to the SIMATIC S5 automation family. It functions as the serializer/deserializer (SerDes) optical interface that enables IM 307 expansion-unit interface modules and IM 317 central-controller interface modules to communicate over glass fiber instead of copper.
This compact, lightweight module converts the parallel S5 expansion-bus signals carried by the IM 307/IM 317 into high-integrity optical transmission, allowing central controllers and expansion units to be separated by distances far beyond the reach of conventional electrical cabling. The 6ES5307-0MM11 is the essential optical link component for any SIMATIC S5 architecture that demands electromagnetic immunity, ground-loop elimination, or long-distance distributed I/O deployment.
Application Scenarios
A steel rolling mill in the Ruhr region of Germany had deployed a SIMATIC S5-155U central controller to manage its hot-strip mill drives. The expansion unit housing critical drive I/O was located approximately 1.5 km away across the shop floor, passing directly beneath overhead crane rails, arc furnaces, and high-power motor feeders. Initial attempts to use the IM 304 coaxial-based interface resulted in repeated communication dropouts every time the arc furnace struck an arc—each interruption forced a mill shutdown costing tens of thousands of euros per hour.
By retrofitting both ends of the link with 6ES5307-0MM11 fiber optic media modules paired with IM 307 (expansion unit) and IM 317 (central controller) interface modules, the engineering team established an optically isolated communication path. The glass fiber cable, with its inherent immunity to electromagnetic interference, completely eliminated the arc-furnace-induced dropouts. The 6ES5307-0MM11 transformed an unreliable, fault-prone connection into a rock-solid 24/7 communication backbone. For plant managers operating legacy S5 systems in electrically hostile environments, the 6ES5307-0MM11 is not simply a spare part—it is the key to keeping decades-old automation assets competitive and dependable.
Parameter
| Main Parameter | Value / Description |
|---|---|
| Product Model | 6ES5307-0MM11 |
| Manufacturer | Siemens AG |
| Product Category | Fiber Optic Media Module (Serializer/Deserializer) |
| System Family | SIMATIC S5 |
| Paired Interface Modules | IM 307 (Expansion Unit side), IM 317 (Central Controller side) |
| Function | Converts parallel S5 expansion bus to optical signal and back |
| Fiber Type | Multimode graded-index glass fiber, 62.5/125 μm |
| Typical Wavelength | 820–850 nm (GaAlAs transmitter) |
| Optical Connector | BFOC (ST-compatible) |
| Maximum Transmission Distance | Up to approx. 2,000 m with standard multimode fiber |
| Typical Fiber Attenuation | ≤ 3.2 dB/km at 850 nm |
| Power Supply | 5 V DC via S5 backplane (no external 24 V required) |
| Operating Temperature | 0 °C to +60 °C |
| Protection Rating | IP20 (for installation inside enclosed control cabinet) |
| Mounting | Dedicated connector on IM 307/IM 317 front panel (X3 port) |
| Weight | 0.228 kg |
| Commodity Code | 8538 90 91 |
| Status Indicators | Link/activity signaling via IM module LEDs |
| Configuration | Transparent—no separate addressing or parameterization required |