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　　Other names for 0v72h:

　　Digital Module 0v72h

　　0v72h Input/Output Module

　　Analog Module 0v72h

　　0v72h Communication Module

　　Core Functions and Technical Parameters

　　Digital Input: 10-channel isolated digital input, supporting switch contact signals (impedance ≤2kΩ) and level signals (high level 4.0-30V, low level ≤1V), isolation voltage 2500VDC.

　　Signal Acquisition and Control: 10 isolated digital input channels (DI0-DI9), supporting switch contact/level signals (high level 4.0V~30V, low level ≤1V), compatible with Modbus-RTU protocol, RS-485 interface with 2500VDC isolation protection.

　　Communication Protocol: Supports Modbus-RTU, communicates via RS-485 interface, baud rate 9600-115200bps, configurable address, parity, and other parameters.

　　Power Supply and Protection: Power supply voltage 9-30VDC, built-in reverse connection protection, ESD/overvoltage/overcurrent protection, operating temperature -20℃~85℃.

　　Hardware Design: DIN rail mounting, clear terminal arrangement, including power indicator (PWR), running status indicator (RUN), and communication indicator (TXD/RXD).

　　Terminal Design: Includes power terminals (VCC/GND), communication terminals (485-A/B), digital input channels (DI0-DI9), and status indicator lights (PWR/RUN/TXD/RXD).

　　Configuration Capabilities: Supports configuration of parameters such as address, baud rate, and parity. Default settings can be forcibly restored via the INIT terminal.

　　Wartsila Original IOM Series Modules (e.g., IOM12600/12680/12682):

　　Processor: 32-bit ARM core, 72MHz clock frequency, 64KB flash memory + 20KB RAM.

　　Interfaces and Protocols: Supports Modbus RTU and BACnet MS/TP. Digital inputs support dry contacts. Digital outputs support 24VDC<3A. Analog inputs support 0-10V/4-20mA. Analog outputs support 0-10V/4-20mA.

　　Expansion Capabilities: Capable of cascading expansion, enabling distributed control via a daisy-chain topology, suitable for industrial automation, marine propulsion systems, and other scenarios.

　　Supporting Models and System Components:

　　System Components: In marine main engine control systems, it is commonly used in conjunction with Unic series main engines, Norgren solenoid valves (e.g., SXE9574 series), Moeller circuit breakers (e.g., NZMN1-A80), Festo connectors (e.g., QST series), Schmersal safety relays, etc., forming a complete control chain.

　　Protocol Compatibility: Supports mainstream industrial protocols such as Profinet and EtherNet/IP, allowing seamless integration with PLCs and SCADA systems, and interconnection with devices from brands such as Siemens and Huawei.

　　Usage Method:

　　Hardware Connection: Communicates with a host computer (e.g., PLC, industrial computer) via an RS-485 interface. Digital input channels connect to sensors, switches, and other devices. Power terminals connect to a 9~30VDC power supply.

　　Parameter Configuration: Configure communication parameters using the WM-IO device debugging assistant or standard Modbus-RTU protocol function codes (e.g., 03 Read Register, 10 Write Register). Power on after shorting INIT and IN-GND to initialize the module.

　　Maintenance and Debugging: Monitor module operating status in real time via status indicator lights (PWR/RUN/TXD/RXD). Supports over-the-air firmware upgrades. In case of faults, online module diagnostics can locate the problem.

　　Functional Effects

　　Industrial Applications: Real-time monitoring of parameters such as speed, temperature, and pressure in ship main engine control, triggering alarm devices; connection to PLCs and sensors in smart factories for production line equipment status monitoring and automated control; collection of temperature and humidity signals in smart buildings to drive energy-saving operation of air conditioning and lighting systems.

　　Performance Advantages: Strong anti-electromagnetic interference capability (false alarm rate<0.01%), high="" stability="" mtbf="">100,000 hours), supports wide operating temperature range of -40℃ to 70℃, good network compatibility, and adaptable to complex industrial environments.

　　Real-world examples: After adopting a general-purpose remote I/O solution, an oil refinery reduced its cabinet footprint by 60%, replaced 90% of copper cabling with fiber optics, and lowered annual maintenance costs by 45%; a semiconductor factory, after deploying I/O modules with QoS mechanisms, reduced its data packet loss rate from 3% to 0.02%.

　　Application Scenarios

　　Industrial Automation: Production line monitoring (e.g., motor speed, fault alarms), process control (chemical/metallurgical flow/level regulation), intelligent lighting (lighting/human body sensing control).

　　Marine and Energy: Wärtsilä, as a supplier of marine power systems, offers IOM modules that can be used for main engine control, power monitoring (voltage/current acquisition), and remote control of auxiliary equipment (valves/pumps).

　　Intelligent Buildings: HVAC (temperature and humidity monitoring and fan control), security linkage (fire alarm triggering emergency ventilation), power distribution optimization.

　　Special Environments: Corrosion-resistant modules are used in mining/wastewater treatment, with a wide temperature range suitable for extreme conditions (-40℃~85℃).

　　Marine Main Engine Control: Integrated into the Unic main engine system, it monitors engine status in real time and triggers alarm devices.

　　Smart Factory: Connects PLCs and sensors to achieve equipment status monitoring and automated control on the production line.

　　Smart Building: Collects temperature and humidity sensor signals through the DI channel, triggering energy-saving operation of air conditioning and lighting systems.

　　Key Features and Advantages

　　Signal Isolation and Interference Resistance: Opto-isolation technology eliminates electromagnetic interference, ensuring stable signal transmission.

　　Modular Expansion: Supports daisy-chain topology, adapting to the needs of distributed control systems.

　　Remote Management: Enables remote configuration and data acquisition via the Modbus protocol, supporting cloud platform integration (such as historical data storage and alarm push notifications).

　　Reliability Design: Wide operating temperature range, reverse power connection protection, and fail-safe mode (outputs preset state when communication is interrupted).

　　Key Differences and Precautions

　　Configuration Method: Both support remote parameter configuration (such as Modbus register writing), but the Wärtsilä module requires initialization via dedicated software (such as BACnetScan) or the hardware enable terminal (INIT), while the Weiming module can be directly modified through configuration tools.

　　Protection Rating: Industrial-grade designs include isolation, surge protection, and interference immunity. However, specific parameters (such as isolation voltage and IP code) should be found in the product manual.

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