网络控制
FLOWSERVE Network Controls - HART with DTM
HART® (Highway Addressable Remote Transducer) is a digital communication protocol that is based upon the Bell 202 telephone communication standard. By using FSK (frequency shift keying) to superimpose low level digital signals on top of an analog 4-20 mA
特点和优点

Digital signal on conventional 4-20m ADC analog signal

1200 bps binary phase - continuous frequency-shift-keying

Distances up to 1800 meters/network (up to 15 devices)

EDDL (IEC 61804-2, EDDL) with methods for all supported Common Practice & Device Specific Commands


规格参数

Complies with HART Protocol Specification document HCF_SPEC-13 for rev. 7.3

配置

Network Protocol
HART (Highway Addressable Remote Transducer) was developed by Emerson for the purpose of communicating a digital signal over analog (4-20 mA) input. It is perhaps the most widely used type of digital protocol.

Network Service
Can be fitted to either MX or QX


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