1. Product Description
The GE D20ME (P/N 526-2005-216943) is an Ethernet communication interface module for the GE D20 Programmable Logic Controller (PLC) system. It enables TCP/IP connectivity between the PLC backbone and supervisory systems (SCADA/HMI) through a 10BASE-T Ethernet port.
Key Role: Bridges D20 PLC racks to plant networks for real-time data exchange.
2. Specifications & Parameters
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Parameter
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Specification
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|---|---|
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Model
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D20ME / 526-2005-216943
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Interface
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10BASE-T Ethernet (RJ45)
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Protocol
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GE SRTP (Secure Real-Time Protocol)
Modbus TCP (Limited support via gateway) |
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Data Rate
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10 Mbps
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Backplane Port
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D20 Parallel Bus (5V DC)
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Isolation
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1,500V AC (network-to-backplane)
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LED Indicators
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Power, Network Activity, Error
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Power Consumption
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500 mA @ 5V DC (backplane)
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Operating Temp.
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-40°C to +70°C (Industrial Grade)
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Certifications
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UL 508, cUL, CE, FCC Part 15
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3. Series & Compatibility
- Series: GE D20 PLC I/O & Communication Modules
- Compatible CPUs:
- D20 ECPU (e.g., D20 500-1061)
- D20 MICRO (e.g., D20 500-1001)
- Backplane Support:
- D20 Baseplates (e.g., 526-1001-xxx) with ≥1 free slot
- Related Modules:
- Serial Comm: D20MC (Modbus)
- Genius Comm: D20GM
- Remote I/O: D20RI
4. Key Features
- Legacy Network Integration: Connects D20 PLCs to early Ethernet-based SCADA systems.
- Rugged Design: Operates in extreme temperatures (-40°C to +70°C).
- SRTP Protocol: GE’s proprietary real-time protocol for deterministic data transfer.
- Dual-Port Memory: Buffered data exchange between Ethernet and D20 backplane.
- Diagnostic LEDs: Quick status monitoring (power/link/error).
5. Functionality
- Enables remote PLC programming (via LogicMaster 90-30/70 software).
- Facilitates real-time data exchange with HMIs (CIMPLICITY, iFIX).
- Supports alarm reporting and historical logging to central servers.
6. Applications
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Application
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Use Case
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|---|---|
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SCADA Integration
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Water treatment plant remote monitoring
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Data Logging
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Recording process variables (pressure/temperature) in oil refineries
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HMI Connectivity
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Operator interface for manufacturing equipment
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Remote Diagnostics
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Troubleshooting PLC logic from control rooms
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Legacy System Modernization
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Bridging D20 PLCs to modern Ethernet networks
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7. Target Industries
- Power Generation: Turbine control, substation automation
- Water/Wastewater: Pump station control, reservoir management
- Oil & Gas: Wellhead monitoring, pipeline SCADA
- Manufacturing: Batch process control, conveyor synchronization
- Transportation: Tunnel ventilation control, signal systems
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