OPERATION
21
DISPLAY
The six-digit numeric display normally indicates
the counter value. When presets or functions are
being programmed, the display indicates either the
function code or the data being programmed.
When power is applied to the counter, the display
flashes at 1/2 second intervals for 4 seconds. The
counter will accept counts during this period.
INDICATORS
Four yellow LED indicators in the form of “light-
bars” are located to the right of the display. These
lightbars indicate what is being displayed, the
count value, preset 1 value, preset 2 value or pre-
set 3 value. All four are off when functions are
being interrogated or modified. When the count is
displayed in the sequential mode, the Preset LEDs
indicate which preset is currently being used.
KEYBOARD
Data Entry Keys (0 through 9)
The data entry keys are used to enter preset val-
ues, function codes and parameters.
“PRESET 1” Key (1)
The “1” key also serves as the “PRESET 1” key.
The “PRESET 1” key is used to select the Preset 1
value for interrogation or modification.
“PRESET 2” Key (2)
The “2” key also serves as the “PRESET 2” key.
The “PRESET 2” key is used to select the Preset 2
value for interrogation or modification.
“PRESET 3” Key (3)
The “3” key also serves as the “PRESET 3” key.
The “PRESET 3” key is also used to select the
Preset 3 value for interrogation or modification.
“COUNT” Key
The use of this key after an interrogation or modifi-
cation of an operating function will cause the count
to display.
“FUNCTION” Key
The “FUNCTION” key is used to change the pro-
grammable functions. When this key is pressed
and followed by 2 digit code, the function to be
interrogated or modified is selected.
The “FUNCTION” key permits the programming of
all functions except preset values.
“RESET” Key
The “RESET” key is used to reset the counter. If
the “Unlatch At Reset” or the “Latch Until Reset
Complete” function is programmed, the “RESET”
key may be used to unlatch any of the transistor
outputs. If the control is in the sequential mode,
the “RESET” key also resets the sequence.
“ENTER” Key
When the “FUNCTION” key is pressed and a code
is specified, the “ENTER” key is used to terminate
and enter the code. The “ENTER” key is also used
to terminate and enter a programmed value or a
preset value.
FUNCTION CODES
The control has many different programmable
operating modes and selectable options. The user
must select which of these functions will be used
and how they should operate by specifying a
Function Code on the keyboard and entering the
correct value choice to select the desired mode.
The functions may be reprogrammed at any time if
the Program Inhibit terminal (terminal #15) is not
connected to the DC Common.
While the user is programming the various func-
tions and their entry choices, the counter contin-
ues to operate normally, even though the display
does not indicate the current value of the counter.
This allows the operating parameters to be
changed while the process being controlled is run-
ning. See Figure 22 for a complete table of the
functions and their allowable entry choices.
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WARNING
CHANGING FUNCTION CODE VALUES
WHILE THE PROCESS IS OPERATING
MAY BE HAZARDOUS TO THE OPERA-
TOR AND/OR THE MACHINERY. USE
EXTREME CAUTION. IT IS RECOM-
MENDED THAT THE PROCESS BE
