Power On/Off; Power On; Power Off; Panel Security Keylock - Honeywell LEVEL 6 Operation Manual

Power ON/OFF
Panel Lock
The Power ON/OFF switch, located on the Turning the keylock to the left locks the
left side of the central processor, is the primary control panel. All switches, keys and registers are
power supply switch. disabled. The ON/OFF switch remains operable.
Panel Unlock
Power ON
Turning the Keylock to the right unlocks the
Positioning the ON/OFF switch up to the ON
panel. In the unlocked state the panel can be used
position applies ac power to the central processor.
for normal operations.
Power OFF
Control Keys
Positioning the ON/OFF switch down to the
There are eleven keys for controlling the
OFF position removes ac power from the central
various central processor states and operating
processor.
modes. Each of these keys is discussed in Table
2-1.
Panel Security Keylock
The Panel Security Keylock, located to the
Status Indicator Lights
immediate right of the ON/OFF switch, is used to
Eleven lights located in the area of the panel
enable/disable all switches and keys on the
labeled MONITOR indicate the status and operat­
control panel (except for the Power ON/OFF
ing modes. Each of these lights is discussed in
switch).
Table 2-2.
TABLE 2-1. CENTRAL PROCESSOR CONTROL KEYS
Key Function Key Colora Description
L
Load
-
Green Depress the boad key to place the processor in the !:.oad Mode. Depres­
sing the E key will bootload a program into memory.
C ~hange Green
Depress the
~hange
key to place the processor in the
~hange
Mode. In
this mode the processor is ready to accept operator modifications to the
contents of selected registers.
1 Plus 1
-
White
Depress the Plus
1
key to place the processor in Plus
1
Mode. In this
mode the processor is ready to read or write successive memory locations
from the control panel, and each depression of the E key causes the mem­
ory address register to be incremented by 1.
W
Write
-
White
Depress to place the processor in
~Tite
Mode. In this mode the processor
~rites
the contents of the selected register into the location addressed
by the memory address register (AO).
R Read
-
White
Depress the .!S,ead key to place the processor in the Read Mode. In the
Read Mode the processor reads the contents of the selected register
from the location addressed by the memory address register (AO).
S ~top Red Depress the ..§.top key to stop instruction execution and place the proces­
sor in the ..§.top State. In this state each depression of the E key causes
execution of one instruction so that the operator may step through a
program.
R
Ready Red Depress the Ready key to place the processor in the Ready Mode (.!S,eady
indicator ON). In this mode the processor is ready to execute. If the E
key is depressed program execution begins and the RUN indicator
illuminates.
CLR Master Black Depress the
,g!:.~
key to clear the processor. This action resets the in­
~~a.!S,
struction register (DO) and the program counter (EO) to zero and clears
any order pending in the processor. Master clear can be performed only
in the STOP State.
S Select Green Depress the
~elect
key to place the processor in the ..§.elect Mode. The
register to the operated on is selected by keying in the proper selection
code from the hexadecimal pad.
CENTRAL PROCESSOR CONTROL PANEL
2-2
AT04