H1770M Modbus 64-bit Digital I/O Board


The H1770M Modbus digital I/O board contains sixty-four discrete digital input/output bits. The input or output direction of each digital bit is user-selectable and may be set individually or all at once.

Available on backorder

Additional Information


• Digital inputs and outputs via RS-232 or RS-485.
• Connect to solid state relays to sense AC and DC voltages.
• User defines any bit as input or output.
• Control digital I/O bits individually or all at once.
• No software initialization required – I/O startup stored in EEPROM.
• 64 discrete digital input/output bits.
• Communications Watchdog Timer for Digital Outputs.
• Modbus RTU Serial Protocol. • Interface with industry standard I/O modules and racks.

Sensor Type

Digital I/O



RS-485 Only

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