About the product

SFAR-1M-4DI has 4x DI (Digital Inputs). Digital
Inputs can work as fast pulse counter up to 1 kHz and support PNP or NPN input types. All inputs are separated from power supply and RS485 block with use of optical isolators.
Built-in RS485 interface allows to easy connection over Modbus RTU/ASCII protocol with a PLC makes the modules an external I/O. The use of 32-bit ARM core processor provides fast processing and communication with the baud rate from 2400 to 115200 bps. The module is equipped with a set of LEDs used to indicate the status of inputs, power supply and RS485 communication. This feature is useful for diagnostic purposes and helping to find errors.
Built-in mini USB allows for initial configuration of the unit without power supply.

Key Features
• 4x opto-isolated Digital Input can work as 32-bit impulse counters or timer
• Closed contact or Digital Input work modes • Support for 2 encoders
• Built-in LEDs for device status indication
• Modbus RTU/ASCII communication
• Baud rate: 2400 bps to 115200 bps
• Up to 128 modules on the bus
• Built-in mini USB type B port for configuration • Space-saving housing, DIN rail mount

Specification
Digital Inputs (DI)
• Input type: PNP or NPN
• Fast pulse counter up to 1 kHz save to FRAM memory
• Time counting in ms for active input
• DI1-DI4- encoders support

Platform
• ARM Cortex-M3 Communication
• Interface RS485 half-duplex
• Up to 128 devices on the bus
• Protocol: Modbus RTU/ASCII
• Baud rate: 2400 to 115200 bps
• Interface mini USB type B

Power supply
• 12-24 V DC ± 20%

Housing
• Dimension WxHxD: 17x90x56 mm
• Construction: UL approved,self-extinguishing plastic (PC/ABS)
• DIN rail mounting DIN (DIN EN 50022 norm)
• Cooling: internal air circulation

Environment
• Operating temperature: -10°C to 50°C
• Storage temperature: -40°C to 85°C
• Relative humidity: 5% to 95%, no condensation
• Ingress Protection Rating: IP40 – for indoor installation

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