Technical Specifications
Ports: 1×RS-232, 1×RS-485. Protocols: 3964R, RK512, Modbus RTU/ASCII, USS. Baud rate: 300bps to 19.2kbps. Interface isolation: 500V AC. Power supply: from S7-300 backplane. Power dissipation: 2W. Operating temperature range: 0°C to +60°C.
Functional Features
Dual independent serial ports. Supports multiple standard industrial communication protocols. Configurable baud rate, parity and data bits. Front panel status indicators per port. Message handling with transmit and receive buffers.
Application Scenarios
It connects process instruments, weigh scales, barcode readers, drives and third-party controllers to S7-300 PLC systems.
Performance Parameters
Baud rate: up to 19200bps. Data bits: 7, 8. Parity: none, even, odd. Operating temperature range: 0°C to +60°C.
Material Composition
Housing: flame-retardant plastic. PCB: FR-4. Transceivers: industrial serial drivers. Connectors: gold-plated copper.
Structural Characteristics
It features S7-300 standard module form factor, front panel status LEDs, serial interface connectors, rear backplane connector, and DIN rail mounting.
Working Principle
It handles serial communication independently from the main CPU, transmitting and receiving serial data according to the configured protocol, and exchanging data with the CPU over the S7 backplane.
Installation Requirements
Mount on S7-300 DIN rail. Connect serial devices to ports. Configure protocol parameters via STEP 7. Set baud rate to match connected devices.
Usage Notes
Verify protocol settings match devices. Use shielded cable for long runs. Ground shield at one end. Check status LEDs for faults. Follow ESD procedures.
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