GE IC687BEM731-AB Ethernet communication module
Specific Parameters
Electrical Parameters
Power Supply: Powered via the rack backplane, input voltage +5V DC (provided by the Series 90-70 rack power supply), typical power consumption 3W, maximum power consumption 5WCommunication Interfaces: 2 10/100Base-TX Ethernet ports (RJ45 interfaces), supporting full-duplex/half-duplex modes with auto-negotiationSupported Protocols: Ethernet/IP (supports slave mode, compatible with ODVA standards), Modbus TCP (supports master/slave modes)Data Transmission Rate: Ethernet ports 10Mbps/100Mbps auto-negotiation, maximum Modbus TCP transmission rate 100MbpsConnection Quantity: Up to 32 concurrent TCP connections, including a maximum of 16 Ethernet/IP connections and 16 Modbus TCP connectionsIsolation Characteristic: Ethernet ports with 1.5kVrms electrical isolation, independent isolation between backplane bus and communication circuitsDiagnostic Functions: Built-in port link detection (link on/off, rate negotiation status), communication timeout alarm, protocol anomaly diagnosis; fault information uploaded to CPU via LED indicators and backplane busStatus Indication: 2 Ethernet port LEDs (green: normal link; yellow: data transmission), 1 system operation LED (green: normal), 1 fault LED (red: abnormal)
Mechanical Parameters
Overall Dimensions: 101.6mm (L) × 165.1mm (W) × 50.8mm (H), compliant with Series 90-70 module mechanical specificationsHousing Material: Flame-retardant engineering plastic (UL94 V-0 grade), anti-static coating on surface, with RFI shielding functionWeight: Approximately 0.4kgMounting Method: Installed in standard I/O slots of Series 90-70 controller racks (compatible with 10-slot, 16-slot racks), requiring at least 1 slot spacing from the CPU moduleWiring Method: Ethernet ports connected directly via CAT5e/CAT6 cables, no additional terminal wiring required
Environmental Parameters
Operating Temperature: -25℃ to +60℃ (non-condensing environment, compliant with IEC 60068-2-1/2 standard)Storage Temperature: -40℃ to +85℃Relative Humidity: 5% to 95% (non-condensing, compliant with IEC 60068-2-3 standard)Protection Rating: IP20 (module itself, relying on Series 90-70 rack protection)EMC Compliance: Meets EN 55022 Class A (emission limits) and EN 55024 (immunity) standardsVibration Resistance: 10-500Hz frequency range, 0.5g acceleration (sine wave), 30 minutes of continuous testing per axis
Product Performance
Strong communication compatibility: Supports both Ethernet/IP and Modbus TCP protocols, enabling direct connection to third-party Ethernet devices from Rockwell, Schneider, etc., without additional protocol conversion modules, reducing system complexity.
Sufficient connection capacity: A maximum of 32 concurrent TCP connections can meet the simultaneous communication needs of multiple devices (e.g., connecting 10 HMIs, 16 remote I/Os, 6 SCADA servers), adapting to large-scale distributed control systems.
High link reliability: 1.5kVrms electrical isolation for Ethernet ports and EMC anti-interference design ensure a communication bit error rate ≤10⁻⁶ in industrial strong electromagnetic environments (e.g., near inverters and motors), with no data loss or link interruption.
Fast diagnostic response: Anomalies such as link faults and communication timeouts can be detected and reported within 100ms; LED indicators intuitively feed back status, reducing fault location time to ≤2 minutes and lowering maintenance difficulty.
Excellent environmental adaptability: The -25℃ to +60℃ wide temperature design covers most industrial scenarios (e.g., workshop control cabinets, outdoor distribution rooms); vibration resistance ensures stable operation of the module in the vibration environment of operating equipment.
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