The IC697BEM711 is a Series 90-70 bus receiver module that enables rack expansion for GE Fanuc PLC systems. It supports high-speed data transmission up to 500 Kbytes/sec across daisy-chained expansion chassis.
The GE Fanuc IC697BEM711 functions as the critical interface for expanding a Series 90-70 PLC system beyond the main CPU chassis. This Bus Receiver module allows a secondary or remote rack to communicate directly with the central processor by receiving signals from an IC697BEM713 Bus Transmitter. By utilizing this hardware, engineers can distribute I/O modules and specialized option boards across multiple racks to accommodate large-scale industrial applications. The module facilitates a high-speed parallel data link, ensuring that remote I/O data refreshes with minimal latency. Consequently, this expansion capability proves essential for complex automation environments in power generation, water treatment, and heavy manufacturing where high point counts are required.
Integrating the IC697BEM711 into a Series 90-70 architecture requires a daisy-chain configuration. The system supports up to seven receiver modules connected to a single transmitter, provided the total cable length does not exceed 15 meters (50 feet). Each expansion rack must house one IC697BEM711 module to decode the bus signals for the local expansion backplane. Furthermore, the final receiver module in the chain must utilize an IC697ACC702 terminating resistor to prevent signal reflection and ensure bus stability. The module communicates via a 50-pin expansion cable and occupies a single slot in the expansion chassis. For diagnostic purposes, front-panel LED indicators provide real-time status of the expansion bus integrity and power supply health.
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