Lauer PCS811 Interbus-S Interface Module

The Lauer PCS811 (version 811.000.3) is a specialized interface module designed to connect Interbus-S fieldbus networks to automation controllers and other devices. Interbus-S is a high-speed, deterministic fieldbus widely used in factory automation for remote I/O and drive control. This module acts as a slave or master, facilitating seamless integration of Interbus-S segments into larger control architectures, with optical or electrical isolation to ensure signal integrity in noisy environments.

Technical Specifications

Interbus-S Ports: 1 x 9-pin D-sub (RS485), 1 x fiber optic (optional).
Host Interface: 1 x RS232, 1 x Ethernet 10/100 for configuration.
Data Rate: Up to 2 Mbps (automatic detection).
Protocol: Interbus-S (standard), supports cyclic and acyclic data.
Address Range: Up to 64 slaves.
Diagnostics: LED for bus status, error, and power.
Power Supply: 24 V DC (18–30 V), consumption 3 W.
Isolation: 1500 V between fieldbus and host.
Operating Temperature: 0 °C to 50 °C.
Mounting: DIN rail.
Dimensions: 90 x 60 x 40 mm.
Weight: 0.25 kg.

Functional Features

The PCS811 supports the full Interbus-S protocol stack, including automatic baud rate detection, bus parameterization, and error handling. It can be configured as a master to control an Interbus-S network, or as a slave to attach to an existing master. The module includes a web-based configuration interface for setting node addresses, I/O mapping, and diagnostic filters. It also supports data logging and can forward alarms to a higher-level SCADA system.

The fiber optic option provides galvanic isolation and immunity to electromagnetic interference, suitable for long-distance runs or high-voltage environments. The module includes a real-time clock for time-stamping events.

Installation Guidelines

Mount on DIN rail. Connect the Interbus-S cable (shielded twisted pair) to the D-sub connector; for fiber, use appropriate connectors. Set the address via DIP switches. Connect the host interface (RS232 or Ethernet) for configuration. Ensure proper grounding of the shield.