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Emerson DA7281440智能输入/输出板（或模块）是一款具有特定通信能力和技术特性的产品，主要用于工业自动化和过程控制领域。以下是对该产品的详细解析：
18185397189
Emerson DA7281440智能输入/输出板（或模块）是一款具有特定通信能力和技术特性的产品，主要用于工业自动化和过程控制领域。以下是对该产品的详细解析：
Emerson DA7281440智能输入/输出板（或模块）适用于需要高可靠性和长距离通信的工业自动化和过程控制场景。其独特的通信能力和防爆特性，使得它在石油、化工、天然气等危险环境中具有广泛的应用前景。
The Emerson DA7281440 intelligent input/output board (or module) is a product with specific communication capabilities and technical characteristics, mainly used in the fields of industrial automation and process control. The following is a detailed analysis of the product:
1. Basic information
Brand: Emerson
Model: DA7281440
Type: Intelligent input/output board (or module)
2. Technical characteristics
Communication scheme:
10BASE-T1L physical layer capability based on full-duplex, DC balanced, point-to-point communication scheme.
Adopts PAM 3 modulation, 7.5 MBd symbol rate, 4B3T encoding.
Amplitude mode:
Supports two amplitude modes, 2.4 V peak for up to 1000 meters of cable and 1.0 V peak when the distance is shortened.
The 1.0 V peak amplitude mode means that this new physical layer technology can also be used in explosion-proof system (Ex) environments.
Data bandwidth:
The data bandwidth ranges from 1.2 kbps to 31.25 kbps, up to 10 Mbps.
Power supply and power consumption:
The power demand of the instrument is less than 40 mW (with restrictions), and can reach 60 W in non-explosion-proof systems (depending on the cable).
Fieldbus support:
When using HART, current signals from 4 mA to 20 mA are supported.
III. Application scenarios
The Emerson DA7281440 intelligent input/output board (or module) is suitable for industrial automation and process control scenarios that require high reliability and long-distance communication. Its unique communication capabilities and explosion-proof characteristics make it have a wide range of application prospects in hazardous environments such as petroleum, chemical, and natural gas.
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