Buffering & Throughput
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2 kB transmit buffer, 2 kB receive buffer per port
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DMA-assisted transfers for sustained high throughput
Isolation & Protection
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2500 V DC port-to-logic isolation
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±15 kV ESD surge protection on all signal lines
Diagnostics
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Per-port status LEDs: TX, RX, ERR
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Module-level OK LED
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Cable fault, framing error and buffer overflow detection
Power Requirements
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Backplane: 3.3 V DC @ 300 mA typ, 450 mA max
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Power dissipation: 1.5 W max
Environmental Ratings
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Operating temperature: 0 °C to 60 °C
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Storage temperature: –40 °C to 85 °C
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Relative humidity: 5 % to 95 %, non-condensing
Functional Highlights
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Hot insertion and removal under power
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Firmware flash upgrade via backplane
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Removable terminal block with spring or screw connections
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Configurable termination and bias resistors for RS-485/RS-422
Applications
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Integration of legacy Modbus RTU variable-frequency drives into new PACSystems architectures
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Data acquisition from serial weigh scales and barcode scanners on packaging lines
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Communication with remote I/O racks, chart recorders and flow computers in upstream oil & gas facilities
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Migration paths for Series 90-30 CCM and SNP networks to modern Ethernet-based SCADA/DCS layers
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