
UM344-2 XTC COMMUNICATOR
September 1995
2.0 XTC COMMUNICATOR
The Moore XTC Communicator (MXC) is a HART protocol-based, hand-held instrument capable of
communicating with HART conformant instruments from Moore Products Co. and from other
manufacturers. It provides full access to on-line and off-line configuration data and to monitoring of
process variables. An MXC is shown in Figure 2-1.
When used with HART-conformant field instruments, the MXC can:
• Store up to 100 instrument configurations in its non-volatile memory.
• Download a stored configuration from the MXC to an on-line instrument (e.g., a transmitter).
• Upload a configuration from an on-line instrument to the MXC
• Store configurations created at and downloaded from a personal computer running Moore XTC
Configuration Software.
• Communicate with a field instrument from any point in the loop.*
The MXC and the field instruments with which it communicates use the HART protocol for remote
communications. HART uses Frequency Shift Keying (Bell 202 standard) to superimpose digital signaling
on the standard 4-20 mA analog signal. Since there is no net energy change, the analog signal will not be
disturbed and loop integrity is maintained.
An MXC can be used on-line and off-line. On-line, it can display process data from a field instrument or
transfer a configuration between the MXC and a field instrument. Off-line, it is used to create a
configuration or to edit a configuration stored in the MXC. Off-line, an MXC can communicate with a
personal computer to transfer configurations between the MXC and personal computer.
In the following sections, MXC hardware and software will be described. Included in this description will
be the display, keypad, wiring, and power requirements. In addition, at the end of this section, major MXC
menu screens are shown in Figure 2-2 and Model 344 parameters accessible through the MXC are
shown.
* Between the sense resistor and instrument in a non-hazardous area installation. Between the sense resistor and a barrier
in a hazardous area installation.
MXC
Moore XTC
Communicator
Stored
Configurations
(Archives)
Configuration Transfer
Configuration Transfer
X02856S0
Model 344
Temperature Transmitter
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