Lauer PCS Series Operator Panels — PCS095

Technical Dossier

Product Details And Specifications

Lauer PCS Series: Comprehensive Module Range and Technical Overview

The Lauer PCS Series represents one of the most widely deployed operator panel platforms in European heavy industry. Manufactured by Lauer Systemtechnik GmbH (Germany), PCS-series terminals have accumulated significant installed base across petrochemical refineries, chemical processing plants, nuclear auxiliary systems, and continuous-process manufacturing lines. Their ruggedized membrane keypad construction, passive-cooling enclosures, and deterministic serial communication protocols made them the preferred HMI choice for machine builders and OEM integrators throughout the 1990s and 2000s. Many facilities operating Siemens S5, S7-300, and Allen-Bradley SLC 500 controllers continue to rely on PCS panels as the primary operator interface, making long-term spare parts availability a critical operational requirement.

The Evolution of PCS Series Architecture

The PCS product line was introduced by Lauer in the late 1980s as a compact, cost-effective alternative to full-graphic HMI terminals. Early models such as the PCS050 and PCS060 used RS-232 point-to-point communication and supported a limited character-based display. The mid-generation transition — represented by the PCS090, PCS095, and PCS096 — introduced multi-protocol support (PPI, MPI, Profibus-DP, and proprietary Lauer LCA bus), expanded function key arrays, and improved backlit LCD modules. Late-generation models including the PCS950 and PCS960 added graphical display capability and Ethernet-ready communication options, bridging the gap toward modern IP-based HMI platforms.

Compatibility across generations is limited: PCS050/060-era panels use a 9-pin D-sub serial interface incompatible with the 15-pin MPI/Profibus connectors found on PCS090+ units. Firmware is panel-specific and non-transferable between hardware revisions. Replacement of a failed unit therefore requires an exact model match or a validated substitute with equivalent protocol support and display resolution.

PCS Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Lauer PCS operator panel series, organized by functional category:

Compact Text Panels (Entry-Level)

• PCS050: 2-line text display, RS-232, 16 function keys, S5 protocol
• PCS060: 4-line text display, RS-232/RS-485, 20 function keys, S5/S7 protocol
• PCS070: 4-line backlit LCD, RS-485, 24 function keys, multi-protocol
• PCS080: Enhanced text panel, MPI-capable, 32 function keys, S7-300/400 compatible

Mid-Range Operator Panels (Standard Series)

• PCS090: 8-line backlit LCD, MPI/PPI, 32 function keys, Siemens S7 native
• PCS091: PCS090 variant with extended I/O connector, panel-mount version
• PCS092: PCS090 with integrated RS-232 for printer/barcode output
• PCS095: 8-line backlit LCD, MPI/Profibus-DP, 40 function keys, S7-300/400/S5 multi-protocol
• PCS096: PCS095 variant with stainless steel front panel for washdown environments
• PCS097: PCS095 with ATEX Zone 2 certification for hazardous area installation

Advanced Graphic Panels

• PCS900: 320×240 graphic LCD, Profibus-DP, 48 function keys, recipe management
• PCS910: PCS900 with touch overlay, resistive touchscreen, S7/Allen-Bradley dual protocol
• PCS950: 640×480 color TFT, Ethernet TCP/IP, USB host, Windows CE runtime
• PCS960: PCS950 with integrated CF card slot, extended temperature range (−20°C to +60°C)
• PCS970: High-brightness outdoor-rated TFT, IP65 front, Profinet/Ethernet/IP dual stack

Sourcing Hard-to-Find & Obsolete PCS Series Parts

Quality Control for the PCS Series Range

PCS Series panels present specific failure modes that require targeted test procedures. The backlight inverter board (common failure on PCS090–PCS097) is bench-tested under full operating voltage for a minimum 4-hour burn-in cycle. Membrane keypad continuity is verified across all function keys using automated matrix scanning. The MPI/Profibus communication port is tested against a live S7-300 CPU using Siemens STEP 7 diagnostic tools to confirm protocol handshake, data exchange, and error-free telegram transmission. Display contrast and pixel uniformity are evaluated under standardized lighting conditions. Units with repaired or replaced components are re-tested to the same standard as new-old-stock units before dispatch. Each unit is assigned a unique test record traceable to its serial number.