Lauer PCS595 Business Mini Profibus DP Control Panel

Product Overview

The Lauer PCS595 Business Mini is a compact graphic operator panel with an integrated Profibus DP slave interface, offering a cost‑effective solution for distributed automation applications. This panel (also identified as PCS590P in some variants) combines a clear graphic display, a tactile keypad, and fieldbus connectivity in a small footprint, making it ideal for machine‑side control in packaging, material handling, and assembly lines. The integrated Profibus DP allows direct communication with a PLC master without additional gateway modules.

Display and Keypad

The panel features a 5.7‑inch STN graphic LCD with 320 x 240 pixel resolution and a white LED backlight. The display supports text, bitmaps, and simple graphics, enabling the creation of intuitive operator screens with bar graphs, indicators, and numeric input fields. The contrast is adjustable via software. The keypad consists of 22 keys: 10 numeric keys (0‑9), decimal, sign, four directional arrows, Enter, Escape, and 6 programmable function keys (F1‑F6) with LED status indicators. All keys are tactile and backlit, rated for 500,000 operations. The front overlay is IP65 rated.

Integrated Profibus DP Interface

The panel is equipped with a built‑in Profibus DP slave interface that complies with EN 50170 and supports DP‑V0 and DP‑V1 services. The interface provides a galvanically isolated RS‑485 transceiver with a 9‑pin D‑sub connector. The baud rate is auto‑detected up to 12 Mbit/s. The slave address (1‑125) is set via a rotary switch on the rear panel. The panel supports configurable I/O data lengths up to 122 bytes input and 122 bytes output (half of the full 244‑byte capacity, consistent with the “Business Mini” designation). The I/O mapping is defined in the LAUER configuration software, where internal variables are assigned to Profibus slots.

Communication and Additional Ports

In addition to Profibus DP, the panel provides a RS‑232 port (9‑pin D‑sub) for programming and local communication with a PC or a non‑fieldbus device. The RS‑232 port supports baud rates from 1200 to 115200 and can be used for Modbus RTU (master/slave) or ASCII transparent mode. An optional RS‑485 module can be added for multi‑drop Modbus networks. The panel does not include Ethernet, keeping the cost low for fieldbus‑centric applications.

Memory and Application Features

• Flash Memory: 256 KB – stores up to 200 screens.

• SRAM: 128 KB for variables and alarm logs.

• Variables: 1000 internal registers (bit, byte, word, double word, float).

• Alarms: 100 alarm messages with 50‑event history (battery‑backed).

• Recipes: 30 recipes with 50 parameters each.

• Data Logging: 10 trend channels, 1000 samples each.

• Multi‑language: Up to 5 languages.

Electrical Specifications

• Supply Voltage: 24 V DC ±15 % (19‑33 V DC)

• Power Consumption: 300 mA typical (approx. 7.2 W) – includes fieldbus interface

• Isolation: 1.5 kV between Profibus and logic, 500 V between RS‑232 and logic

• Protection: Reverse polarity and transient suppression

Mechanical and Environmental Data

• Housing: ABS/PC blend, UL94 V‑0, front IP65, rear IP20

• Mounting: Panel‑mount with spring clips (cut‑out 166 mm x 126 mm)

• Dimensions: 190 mm x 150 mm x 50 mm (W x H x D)

• Weight: 0.65 kg

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

• Storage Temperature: –20 °C to +70 °C

• Humidity: 10 – 90 % RH (non‑condensing)

Configuration and Software

The panel is programmed using the LAUER PCS‑Config software (version 4.0 or higher), which includes a dedicated Profibus DP configuration wizard. The user defines the screen layout, variables, and alarm settings, and then maps the variables to Profibus I/O slots. The software generates a GSD file (LAUER_PCS595.GSD) that must be imported into the master PLC’s engineering tool. The project is downloaded via the RS‑232 programming port. The software also provides online monitoring, allowing the user to view both the screen variables and the Profibus diagnostic data.

Installation and Commissioning

Mount the panel in the cabinet cut‑out and secure with spring clips. Connect the 24 V power supply (two‑pin terminal) – observe polarity. Connect the Profibus cable to the 9‑pin D‑sub – use standard Profibus cable with proper shielding. Set the slave address using the rotary switch. If the panel is at the end of the bus, enable the internal termination (switch on rear). Connect the programming cable to the RS‑232 port for initial download. After power‑on, download the application. On the PLC side, import the GSD file, configure the I/O length, and assign the same address. Download the PLC configuration and switch to RUN. The panel will now exchange data with the master – verify via the diagnostic LEDs on the front (green RUN, red ERR). If the red LED flashes, check the address and I/O configuration.

Maintenance and Troubleshooting

Clean the front overlay with a soft cloth. The internal battery (CR2032) for alarm history and RTC should be replaced every 5 years. Common faults:

• Profibus not connecting: Check cable continuity, termination, address, and GSD file.

• Communication timeout: Verify that the master is running and that the I/O length matches.

• Screen not updating: Check variable mapping and Profibus data validity.

• No power: Check supply voltage and internal fuse.

For persistent issues, reset the panel to factory defaults via the software and reload the project.

Compatibility and Ordering

The PCS595 Business Mini (Profibus DP variant) is compatible with all Profibus DP masters (Siemens, ABB, Schneider, etc.). The PCS590P designation is a specific hardware revision with the same functionality. When ordering, specify the part number PCS595‑PB (Profibus) or PCS590P as per your need. The panel is available with different keypad legends and optional extended temperature range.