The DOLD BH 5552 Profibus DP Diagnostic Module (German: Diagnosemodul für Profibus DP / English: Diagnostic Module for Profibus DP) is a dedicated industrial diagnostic gateway and functional safety communication instrument researched and manufactured by E. DOLD & SÖHNE GmbH & Co. KG in Germany. In large-scale automated manufacturing environments, deploying autonomous, hardware-based safety control architectures—such as the software-free SAFEMASTER M multifunctional safety system—provides maximum electro-mechanical reliability while satisfying the most stringent functional safety benchmarks (up to Cat. 4 / PL e and SIL 3). However, when an emergency safety trip occurs along an extensive multi-stage production line equipped with dozens of safety interlock gates, light grids, and emergency stop stations, identifying which specific device triggered the shutdown or pinpointing the underlying field wiring fault can become a labor-intensive, time-consuming task for maintenance personnel, leading to prolonged production downtime and substantial financial losses.

The DOLD BH 5552 module serves as a bridge connecting hardware-oriented safety circuits with higher-level industrial digital automation networks. The device interfaces directly with the central control unit (Control Unit BH 5911) along with associated safety input modules (Input Modules BG 5913, BH 5911) and safety output modules (Output Modules BG 5912) of the SAFEMASTER M system via an internal flat ribbon bus connection. The fundamental objective of the BH 5552 is to continuously aggregate all operational logic data—including the exact switching states of individual safety input channels, start/reset pushbuttons, output path assignment matrices, and internal system error registers—formatting and streaming this telemetry onto a standardized Profibus DP fieldbus network.

Through the integration of the BH 5552 module, central industrial programmable logic controllers (such as Siemens S7-300, S7-400, S7-1500) and operator HMI/SCADA visualization terminals gain real-time visibility into the complete functional safety topography. Control engineers and field technicians can immediately discern which exact safety door has been opened, which light curtain beam was interrupted, which emergency stop button remains latched, or whether a cross-fault occurred on a specific input loop. This operational transparency slashes diagnostic troubleshooting intervals down to seconds, substantially maximizes overall system availability, and boosts Overall Equipment Effectiveness (OEE) across the facility.

The module operates under the standardized Profibus DP-V0 protocol (IEC 61158), incorporating automatic baud rate recognition capable of adapting to bus speeds of up to 12 MBit/s. Assigning the station device address within the 01 to 99 range is performed intuitively via two front-panel rotary coding switches (ADR 10 and ADR 1) without requiring configuration software. Fieldbus connectivity is facilitated through a standardized 9-pin Sub-D female interface. The unit is housed in an industrial BH enclosure with a 45 mm module width, suitable for standard 35mm DIN-rail mounting. The front panel features a multi-status LED diagnostic array for continuous monitoring of auxiliary power availability and active bus communication integrity. Fully certified to international standards including IEC/EN 61000-6-2 and IEC/EN 61000-6-4, the DOLD BH 5552 is an indispensable diagnostic asset for automotive manufacturing lines, metal forming presses, robotic automation cells, packaging machinery, and high-speed automated sorting warehouses worldwide.

• Manufacturer: DOLD (E. DOLD & SÖHNE GmbH & Co. KG)
• Country of Origin: Germany
• Product Series: SAFEMASTER M
• Technical Category: Diagnostic Module for Profibus DP (Diagnosemodul für Profibus DP)
• Part Number (Model): BH 5552 (BH5552)
• Standard Article Number: 0056874
• Primary Function: Streaming status telemetry, safety inputs, start inputs, safety output assignments, and internal error codes from SAFEMASTER M to Profibus DP
• System Interfacing Scope: Direct synchronization with control unit BH 5911, input modules BG 5913 / BH 5911, and output modules BG 5912
• Fieldbus Protocol: Profibus DP-V0 compliant with international standard IEC 61158
• Profibus DP Interface: Standard 9-pin Sub-D female connector
• Transmission Medium: Shielded twisted-pair two-wire industrial cable
• Transmission Speed (Baud Rate): Automatic recognition up to 12 MBit/s
• Station Address Configuration: Selectable from 01 to 99 via two front-panel rotary coding switches (ADR 10 and ADR 1)
• Configuration Support (GSD File): Standard GSD device master file provided for PLC engineering integration (TIA Portal, Step 7, etc.)
• Nominal Supply Voltage: DC 24 V (Supplied internally via the system flat-ribbon backplane bus)
• Nominal Current Consumption: Max. 100 mA
• Diagnostic Status LEDs: Front LED array indicating auxiliary power availability, fieldbus activity, and communication fault status
• Enclosure Dimensions (W x H x D): 45 x 84 x 121 mm (Standard BH enclosure)
• Mounting Profile: Quick snap-on mounting on standard 35 mm DIN-rail (IEC/EN 60715)
• Enclosure Material: Flame-retardant industrial thermoplastic rated to UL 94 V-0
• Protection Rating: Housing IP20, Terminals IP20 (according to IEC/EN 60529)
• Ambient Operating Temperature: 0°C to +50°C
• Compliant Standards: IEC 61158, IEC/EN 61000-6-2, IEC/EN 61000-6-4, CE
• Typical Industrial Applications: Metal stamping presses, automated robotic welding cells, CNC machine tools, automotive component lines, and high-speed automated parcel logistics