Standard 1460, Руководство пользователя

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Page 22
1460/61 INSTRUCTION MANUAL
OPERATION
I.) System Controls
There are three mechanisms an operator can use to operate and program a 1460/1461
Master Time Programmer. These mechanisms are: (1) the hardware reset; (2) the keypad;
and (3) the display.
A.) Hardware Reset
The hardware reset is least often used of the three system controls. The hardware
reset is a two pin header found on the CPU board of the 1460 or the 1461. Refer to the
appropriate diagram on page 15 or 21 to locate the hardware reset of your unit.
The hardware reset is an input to the microprocessor of the Master Time Programmer.
When used, the Master Time Programmer restarts its operating software. This has the
same effect as removing, and then restoring, the AC power of the Master Time Pro-
grammer. The software routine running at the time of reset ceases, but the data
(programming and configuration information) already stored in the NVRAM remains
intact.
WARNING: ELECTRIC SHOCK HAZARD! Hazardous voltage in electrical equipment
can cause severe personal injury or death. When performing a hardware
reset, be careful not to touch the metallic object to anything other than the
hardware reset header.
To perform a hardware reset, you must have access to the CPU board (for the 1460 or
the 1461). While the Master Time Programmer has AC power applied to it, carefully
short for a moment the two pins of the header with a metallic object, such as a screw
driver. When the hardware reset is completed, the display will show the time and date.
B.) Keypad
The Master Time Programmer has a sixteen key, multiple function keypad. This keypad
is the operator’s means of “talking” to the Master Time Programmer. It is how the
operator uses and programs the Master Time Programmer. The operator also uses it to
answer questions, called prompts, asked by the Master Time Programmer. The keypad
is multiple function because many of its keys are used for more than one purpose.
The
‘Enter’
and
‘Esc’
keys are the only two keys of the keypad that have a dedicated
function. The
‘Enter’
key is used to actually send some information to the Master
Time Programmer’s memory. The
‘Esc’
key is used to back out of any procedure the
operator is performing. From almost any routine the Master Time Programmer is run-
ning, repeatedly pressing the
‘Esc’
key enough times will allow the operator to get back
to the date and time display without changing the data stored in memory.
The
‘0’
to
‘9’
keys and
‘A’
to
‘D’
keys are used to answer most prompts on the display.
These keys are most often used to choose a menu item or select a signal circuit for
programming.
The
‘SUN’
to
‘SAT’
keys are the same as the
‘1’
to
‘7’
keys, respectively. These keys
refer to days of the week when answering prompts for days of the week.
The
‘YES’
and
‘NO’
keys are the same as the
‘8’
and
‘9’
keys, respectively. These
keys are used to answer prompts requiring a response of “yes” or “no.”
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