HART® Communicator - Emerson Process Management
HART® Communicator - Emerson Process Management
HART® Communicator - Emerson Process Management
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SECTION 1<br />
The HART ® <strong>Communicator</strong><br />
INTRODUCTION<br />
The HART (Highway Addressable Remote Transducer) <strong>Communicator</strong><br />
(Figure 1-1) is a hand-held interface that provides a common communication<br />
link to all HART-compatible, microprocessor-based instruments.<br />
Section 1 discusses the HART <strong>Communicator</strong> Connections, Liquid Crystal<br />
Display, Keypad, Offline and Online menu, Battery Pack, Memory Module,<br />
data pack 100, Maintenance, and Year 2000 Compatibility. It also includes<br />
short overviews on some of the <strong>Communicator</strong>’s functionality.<br />
Section 2 describes tasks that are common to Fisher-Rosemount’s HART<br />
devices and includes some of the common screen displays.<br />
Section 3 displays typical examples of menu trees specific to Fisher-<br />
Rosemount products.<br />
Your HART <strong>Communicator</strong> interfaces with any HART-compatible device from<br />
any wiring termination point using a 4–20 mA loop, provided a minimum load<br />
resistance of 250 ohms is present between the <strong>Communicator</strong> and the power<br />
supply. Your HART <strong>Communicator</strong> uses the Bell 202 frequency shift key<br />
(FSK) technique of high-frequency digital signals superimposed on a<br />
standard transmitter current loop of 4–20 mA. Because the total highfrequency<br />
signal voltage added to the loop amounts to zero, communication<br />
to and from a HART-compatible device does not disturb the 4–20 mA signal.<br />
LIQUID CRYSTAL DISPLAY (LCD)<br />
FUNCTION KEYS<br />
ACTION KEYS<br />
ALPHANUMERIC KEYS<br />
SHIFT KEYS<br />
FIGURE 1-1. The HART <strong>Communicator</strong>.<br />
1-1