Lauer PCs 811 Interbus S Module

The Lauer PCs 811 (version PG 811.000.3) is a specialized communication module designed to interface automation devices with Interbus-S fieldbus networks. Interbus-S is a deterministic, high-speed serial bus system widely used in factory automation for connecting remote I/O, drives, and sensors. This module acts as a gateway, converting between the host controller's internal data format and the Interbus-S protocol, ensuring reliable and real-time data exchange in noisy industrial environments.

Technical Specifications

• Interbus-S Interface: 1 x 9-pin D-sub (RS485) with optional fiber optic port.

• Host Interface: 1 x RS232 (configuration), 1 x Ethernet 10/100 (optional for diagnostics).

• Data Rate: Up to 2 Mbps (auto-detection).

• Protocol: Interbus-S, supporting cyclic and acyclic data.

• Number of Slaves: Up to 64 devices.

• Diagnostics: LED indicators for bus status, error, and power.

• Galvanic Isolation: 1500 V between fieldbus and host.

• Power Supply: 24 V DC (18–30 V), consumption 4 W.

• Operating Temperature: 0 °C to 50 °C.

• Storage Temperature: -20 °C to 70 °C.

• Humidity: 10% to 90% non-condensing.

• Mounting: DIN rail (35 mm).

• Dimensions: 90 x 60 x 40 mm.

• Weight: 0.3 kg.

• Configuration: DIP switches for address and baud rate.

Functional Features

The PCs 811 supports all Interbus-S standard functions, including automatic bus parameterization, error detection, and recovery. It can operate as a master or slave, depending on system configuration. The module includes a built-in web server for remote monitoring and diagnostics (when Ethernet is fitted). It also supports data logging and alarm forwarding via the host interface.

The fiber optic option provides electrical isolation and immunity to electromagnetic interference, suitable for long-distance runs (up to 2 km) or high-voltage areas. The module includes a real-time clock for time-stamping events and a watchdog timer for system reliability.

Installation Guidelines

Mount the module on a DIN rail. Connect the Interbus-S cable (shielded twisted pair) to the D-sub connector; for fiber, use appropriate connectors. Set the node address and baud rate via DIP switches. Connect the host interface (RS232 or Ethernet) for configuration. Ensure proper grounding of the cable shield. Terminate the bus with 220 Ω resistors if the module is at the end of the network.

Configure the module using the supplied software tool or via the web interface. Test the communication with the Interbus-S master.

Operating Conditions

Indoor industrial use, 0–50 °C, humidity<90%. Vibration 0.5 g (10–150 Hz), shock 10 g (11 ms).

Applications

Connecting Interbus-S remote I/O stations, variable frequency drives, and sensor networks to higher-level controllers (PLCs, PCs).

Compliance

CE, UL, and RoHS compliant. Meets EN 61000-6-2 and EN 61000-6-4.

Ordering Variants

Available with fiber optic port, extended temperature range (-20 °C to +60 °C), and additional host interfaces (USB, CAN).