GE 8502-BI-DP PROFIBUS DP-V1 Slave Interface Module
The 8502-BI-DP is a PROFIBUS DP-V1 Slave communication interface module for GE’s RX3i and RX7i PACSystems controllers. It enables high-speed, deterministic data exchange between the PLC and PROFIBUS DP/V1 field devices (sensors, actuators, drives, valves) or other controllers acting as DP Masters. It supports cyclic data transfer and acyclic services (like alarms, parameterization), and offers optional Hot Standby (HSBY) redundancy for critical applications.
Key Product Parameters & Specifications:
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Parameter Category
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Specification Detail
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Manufacturer
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GE Intelligent Platforms (now part of Emerson Automation)
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Series
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PACSystems RX3i / RX7i (VersaMax / Genius Bus compatible)
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Model Number
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8502-BI-DP
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Module Type
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PROFIBUS DP-V1 Slave Communication Interface
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PROFIBUS Standard
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EN 50170 Vol. 2 (DP-V1), IEC 61158 / IEC 61784 compliant
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PROFIBUS Interface
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9-pin D-sub female (RS-485), Terminating resistor switch
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Baud Rate
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9.6 kbps to 12 Mbps (auto-detect or configurable)
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Cyclic I/O Data
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Up to 244 bytes Input + 244 bytes Output per slave
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Acyclic Services (DP-V1)
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Supports alarms, diagnostics, parameterization, program invocation
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Hot Standby (HSBY)
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Optional (requires two 8502-BI-DP modules & HSBY cable), Switchover time < 1 ms
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Number of Masters
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Supports connection to one Class 1 DP Master (or redundant HSBY masters)
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Address Setting
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Rotary switches (0-99)
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Diagnostics
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Comprehensive module & network diagnostics (LEDs, PLC status bits, GSD file)
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Power Requirements
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+5V DC via RX3i/RX7i backplane
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Typical Power Consumption
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1.8 W (Standalone), 2.8 W (with HSBY)
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Operating Temperature
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0°C to +60°C (32°F to 140°F)
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Relative Humidity
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5% to 95% (non-condensing)
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Certifications
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UL Listed, cULus, CE Marked, PROFIBUS ID: 0x0601
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GSD File
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Required for Master configuration (GEH-6724D / GSDML-V2.3-GE_IC695BI-DP-20210311.xml)
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Connector
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Integrated 9-pin D-sub (PROFIBUS)
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Key Features:
- PROFIBUS DP-V1 Slave: Full compliance with enhanced DP-V1 standard for cyclic and acyclic data.
- High-Speed Communication: Supports baud rates up to 12 Mbps for deterministic control.
- Hot Standby (HSBY) Redundancy: Optional configuration for fault-tolerant systems with seamless switchover (<1ms).
- Simple Configuration: Rotary switch addressing and standardized GSD file for easy Master integration.
- Extensive Diagnostics: Dual-color status LEDs (Module, Network, HSBY) and detailed diagnostics accessible by PLC and Master.
- VersaMax / Genius Compatibility: Can be used in RX3i, RX7i, and legacy VersaMax/Genius systems.
- Large Data Capacity: Supports maximum PROFIBUS cyclic I/O data (244 bytes In/Out).
- Robust Design: Industrial-grade componentry for reliable operation in demanding environments.
- Direct Integration: Plugs directly into RX3i/RX7i backplane; no separate power supply needed.
Primary Function (Role): The core function of the 8502-BI-DP is to act as a gateway, enabling bidirectional communication between a GE PACSystems PLC (RX3i/RX7i) operating as a PROFIBUS Slave and a PROFIBUS DP Master device (e.g., a higher-level PLC, DCS, HMI, or drive controller). It translates PROFIBUS DP-V1 network messages into PLC memory data and vice versa.
Primary Purpose (Use): The 8502-BI-DP is used to integrate GE PACSystems PLCs into existing or new PROFIBUS DP networks, allowing them to exchange control data (I/O, parameters, alarms) seamlessly with other PROFIBUS devices under the command of a DP Master.
Typical Applications & Use Cases:
- Integrating RX3i/RX7i PLCs as remote I/O drops into larger Siemens/ABB/other vendor DP Master-controlled systems.
- Connecting PROFIBUS DP field devices (remote I/O blocks, motor starters, variable speed drives, valve positioners, sensors) directly to a PACSystems PLC.
- Implementing redundant control architectures using the HSBY feature for critical processes.
- Exchanging data between PACSystems PLCs and SCADA/HMI systems via PROFIBUS.
- Standalone device integration (e.g., drives, weigh scales, instruments) into PACSystems control logic.
Primary Application Fields:
- Factory Automation: Automotive manufacturing, assembly lines, packaging machinery – integrating drives, sensors, and distributed I/O.
- Process Industries: Chemical, pharmaceutical, food & beverage – connecting valves, flow meters, analyzers, and motor control centers.
- Material Handling: Conveyor systems, warehousing, logistics automation – interfacing motor drives, encoders, scanners.
- Energy Management: Power distribution control, building automation – integrating smart meters and protection devices.
- Water/Wastewater Treatment: Pump control, valve control, flow monitoring – connecting field instruments and drives.
- Infrastructure: Tunnel control systems, airport baggage handling – enabling communication between subsystems.
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