Siemens Pacemaker UM344-2 Instrukcja Użytkownika Pobierz pdf (Strona 16)

UM344-2 XTC COMMUNICATOR

September 1995

2.1 DISPLAY

The MXC has a 5 by 8 dot matrix Liquid Crystal Display (LCD) with

four lines of twenty characters each to show configuration

parameters, operating status, on-line variables, and trends. The LCD

has a back light that can be turned on for viewing in dimly lighted

areas.

All MXC screens have a similar layout. As shown here, most configuration screens use the top two lines

to describe the current screen, and the lower two lines to show the selections available from this screen.

Selections are entered by pressing keys on the MXC keypad. Some on-line variable and trend screens are

slightly different from that shown here, but they will always have a selection to access the next screen.

A blinking infinity symbol (∞) at the lower right corner of the screen indicates that the MXC is

communicating with a field instrument or a personal computer. No keyboard keys should be pressed until

the symbol is cleared upon completion of the communication.

2.2 KEYPAD DESCRIPTION

The thirty-key keypad is shown in Figure 2-1. It contains dedicated keys, alphanumeric keys with shift

keys, and function keys. These keys are color coded as follows:

Ÿ Red - dedicated ON key

Ÿ Black - dedicated OFF key

Ÿ Gray - function keys and dedicated keys (for controller block, on-line monitoring, and MXC functions)

Ÿ White - dedicated alphanumeric, symbol, and shift keys

A dedicated key performs a given function no matter what screen is showing. A function key is

dependent upon the action being performed and the MXC's firmware; available selections are shown on

the screen's bottom two lines.

2.2.1 Dedicated Keys

ON - This key powers up the MXC and initiates the MXC self-test. Press and hold the key until the

Moore logo appears and then release it. If the MXC fails self-test, a warning message will be displayed.

The MXC will now show the options available: communicate with a field instrument or personal computer

or do off-line configuration. These topics are discussed further in Section 5.

To conserve battery power, the MXC will shut off after 10 minutes if no keypad key is pressed. This

auto-shut-off is disabled when the MXC is on-line (e.g., displaying a process variable).

OFF - This key powers down the MXC. It may be used at any time. During configuration, however,

care should be taken so important information is not discarded. When the MXC is in certain modes and

communicating with a field instrument or personal computer, it will query the user as to whether or not it

should be turned off in this mode.

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Siemens Pacemaker UM344-2 Instrukcja Użytkownika Strona 16