Technical Specifications
Expansion bus: X20 local bus. Maximum expansion distance: 10 meters. Maximum modules per expansion: 32. Power supply: 24V DC. Power dissipation: 1W. Operating temperature range: -25°C to +60°C. Isolation: 500V AC.
Functional Features
Extends X20 bus to remote I/O clusters. Transparent protocol with no configuration required. High-speed bus maintains real-time I/O update. Status indicators for bus activity. Hot-swap capability. DIN rail mounting.
Application Scenarios
It expands X20 systems with remote I/O banks, machine-mounted I/O stations, cabinet-to-cabinet I/O extension and distributed automation architectures.
Performance Parameters
Bus speed: 12Mbps. Maximum distance: 10m. I/O update: <1ms. Operating temperature range: -25°C to +60°C. Vibration resistance: 2G @ 10Hz to 500Hz.
Material Composition
Housing: flame-retardant plastic. PCB: FR-4 with conformal coating. Connectors: gold-plated copper. Bus drivers: high-speed differential transceivers.
Structural Characteristics
It features X20 standard form factor, front panel bus status LEDs, expansion bus connector, side local bus connector, and DIN rail mounting base.
Working Principle
It bridges the local X20 bus to an expansion cable, retransmitting bus signals over longer distances to remote I/O clusters. It maintains signal integrity and timing, enabling transparent communication between the CPU and remote I/O modules.
Installation Requirements
Mount on 35mm DIN rail. Connect local bus to CPU side. Connect expansion cable to remote cluster. Terminate both ends of expansion bus. Verify bus status after installation.
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