Bulletin No. S-SUB-F
Drawing No. LP0084
Released 1/08
Tel +1 (717) 767-6511
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SUPER SUB-CUB - 8-DIGIT COMPONENT COUNTER WITH 6-DIGIT LCD DISPLAY
U.S. PATENT NO. 4599600
IDEAL IN APPLICATIONS FOR:
POSITION INDICATION
COUNTING FROM MULTIPLE SOURCES
FLOW MEASUREMENT
MACHINE MONITORS
SECURITY EQUIPMENT
UTILITY METERS
COMPUTERS
VIDEO GAMES
TEST EQUIPMENT
MACHINE CONTROLS
MEDICAL EQUIPMENT
DISPENSING EQUIPMENT
PORTABLE INSTRUMENTS
*
ACCESSORY HARDWARE AVAILABLE FOR PANEL MOUNTING
SUPER SUB-CUB
TRUE QUADRATURE - WITH RESOLUTIONS UP TO 4 TIMES
THE ENCODED INPUT
BI-DIRECTIONAL COUNTING WITH UP/DOWN CONTROL
ANTI-COINCIDENCE ADDITION AND SUBTRACTION
POLARITY INDICATION
8-DIGIT COUNTING CAPABILITY (6-digit display)
DECIMAL POINT AND LEADING ZERO BLANKING SELECTION
SOLDERLESS, ELASTOMERIC INTERCONNECTS (Snap mounts
directly on P.C. board)
ULTRA LOW POWER, 25 µA AT 5 V (TYPICAL)
DESCRIPTION
As a completely self-contained counter/display module, the new SUPER
SUB-CUB can be treated as a component just like any other I.C. The SUPER
SUB-CUB provides all the capabilities and features of the SUB-CUB 2 plus four
“built-in”
modes of operation. These are: Bi-Directional counting with
UP/DOWN control...ideal for length measurement, where change of direction
can occur; Quadrature counting
(two pulse trains, shifted from one another by
90°),
commonly used for position applications; Anti-Coincidence Summing and
Anti-Coincidence Add/Subtract counting ...useful in applications where two
input signals from different sources occur at the same time. The SUPER
SUB-CUB has the additional capability of inhibiting counts to both inputs, used
under certain conditions to prevent false counts.
The SUPER SUB-CUB snap-mounts directly onto a 1/16" thick P.C. Board
which has been etched with the proper mating pattern
(shown below).
Four
elastomeric connectors provide corrosion-proof, gas tight contacts which afford
high reliability. In addition, the SUPER SUB-CUB is available with a bezel
mounting kit, which will allow the unit to be mounted as a panel instrument.
MOUNTING & DIMENSIONS In Inches (mm)
Snap in mounting on the P.C. Board is facilitated by two, split, lock-ramp
pins which engage mounting holes drilled in the P.C. Board. The silicone rubber
elastomeric connectors compress to accommodate P.C. Board thickness
variation of ±0.005" (0.13 mm).
DIMENSIONS
In Inches (mm)
P.C. BOARD LAYOUT
P.C. Board pads may be gold or tin-lead plated. Pad surface
must be flat without excessive tin-lead build-up.
(Layout views
are from SUPER SUB-CUB mounting side of board.)
Pad area must be clean and free of contaminants so that
proper electrical contact can be made.
Note: All hole size tolerances ±0.003" (0.08 mm)
All other tolerances ±0.005" (0.13 mm)
1
DEVICE CONNECTIONS
*
COUNT (A)
- CMOS, Schmidt Trigger; used as count or
count control input, depending on the mode of operation
selected. It’s generally used as a count input. See Modes
of Operation for more details.
COUNT (B)
- CMOS, Schmidt Trigger; used as count or
count control input, depending on the mode of operation
selected. It’s generally used as a count control input. See
Modes of Operation for more details.
RESET (R)
- CMOS Schmidt trigger; counter is reset and
held to zero when this pin is at a low level.
INHIBIT (I)
- CMOS Schmidt trigger; all counting for all
modes is inhibited when this input is at a low level. This
input is asynchronous with inputs “A” and “B”.
LATCH (L)
- CMOS Schmidt trigger; data on the display is
latched when this input is at a high level. This input has no
effect on the counting operations of the unit and is
asynchronous with inputs “A” and “B”
DP1, DP2, DP3
- CMOS level-sensitive; these inputs are
used for decimal point selection and leading zero blanking
selection. See Decimal Point and Leading Zero Blanking
Selection for more details.
MS1, MS2, MS3, MS4, MS5, MS6
- CMOS level-sensitive;
these inputs are used for Mode Selection. These modes
include: Bi-Directional Counting, Quadrature Counting,
Anti-Coincidence Summing and Anti-Coincidence
Add/Subtract. See Modes of Operation for more details.
OSC.
- This input provides for connection of an external 2.4
meg. resistor required by the on-board scan oscillator. The
oscillator operates at 240 Hz ±35% and has an internal
divider to provide 60 Hz back plane drive.
V
DD
- 2.5 to 6 VDC Supply
V
SS
- Common for D.C. Supply and Inputs.
* All other inputs must be tied to either V
DD
or V
SS
,
whichever is appropriate.
BLOCK DIAGRAM
CAUTION
This device contains CMOS circuitry which requires special anti-static
handling to the same degree required by standard CMOS integrated circuits.
Units should be stored in the conductive packaging used to ship the devices.
Containers should be opened and units handled only on a conductive table
top by personnel wearing wrist strap grounding equipment. These devices
have the same protection circuits as standard CMOS devices to prevent
damage to inputs due to nominal over-voltage.
MAXIMUM RATINGS (VOLTAGE REF. TO V
SS
)
RATING
SYMBOL
VALUE
UNIT
DC Supply Voltage
Input Voltage, All Inputs
Operating Temperature
Storage Temperature
V
DD
V
I
T
A
T
STG
-0.5 to +6.5
-0.5 to (V
DD
+.5)
-35 to +85
-35 to +85
VDC
VDC
°C
°C
ELECTRICAL CHARACTERISTICS V
DD
= 5 V ±10% @ 20°C UNLESS OTHERWISE SPECIFIED
SYMBOL
V
DD
I
DD
I
DDQ
V
IH
V
IL
I
IL
PARAMETER
Supply Voltage
Supply Current
Supply Current
Quiescent Current
Input High Voltage
Input Low Voltage
Input Leakage Current
Count Frequency
(50% Duty Cycle)
MIN.
2.5
4.5
TYP.
MAX.
6.0
6.0
40
100
16
0.5
0.1
UNIT
VDC
µA
µA
µA
VDC
VDC
µA
KHz
KHz
KHz
KHz
KHz
Hz
µS
TEST CONDITION
All Modes Except
Anti-Coincidence Modes
F
C
=10 KHz
F
C
=10 K
Anti-Coincidence Modes
Not Counting
25
60
10
3.0
0.9
0.01
3.9
fc max
400
250
200
100
20
240
10
fosc
T
RST
Oscillator Frequency
Reset Pulse Width
V
SS
<
V
IN
< V
DD
X1, -10 & 100 Bidirectional Modes
X2, -5 & 50 Bidirectional Modes
X1, X2, -10, 100, 5 & 50 Quad. Mode
X4, -2.5 & 25 Quadrature Mode
Anti-Coincidence Modes
R EXT = 2.4M
2
MODES OF OPERATION
BI-DIRECTIONAL COUNTING MODES
For Bi-Directional counting, input
“A”
serves as the count input, while input
“B”
serves as the direction control input. In the Times 1 Mode when
“B”
is at
a low level, a negative going transition at
“A”
will cause the counter to count
in the positive direction. When
“B”
is at a high level, a negative going
transition at
“A”
will cause the counter to count in the negative direction.
TABLE I illustrates the level settings of the Mode Select Inputs for the various
modes of Bi-Directional counting. The Times 2 Mode works like Times 1 Mode
except the counter changes on a positive going transition at
“A”,
as well as on
a negative going transition at
“A”.
There are also two Divide-By Modes which
prescale the display by 10 or by 100. This results in the capability of displaying
the 7th and 8th digit of the internal counter.
(Along with Times 2, this gives an
equivalent -5 and -50 display.)
ANTI-COINCIDENCE SUMMING MODES
For Anti-Coincidence Summing, input
“A”
and input
“B”
both serve as Add
Inputs. These modes effectively separate count pulses which may simultaneously
occur at the two inputs. The unit then processes the count pulses into a string of
time-separated pulses so that the internal counter will not lose any counts. Both
inputs respond to the negative going transition in the Times 1 Mode.
TABLE III illustrates the level settings of the Mode Select Inputs for the
various modes of Anti-Coincidence Summing.
Note: The maximum count rate for all Anti-Coincidence counting modes is 20
KHz.
TABLE III
MODE
MS6
MS5
MS4
MS3
MS2
MS1
TABLE I
MODE
MS6
MS5
MS4
MS3
MS2
MS1
Times 1
1
1
0
0
0
0
Times 2
1
1
0
1
1
0
(x2, -10)
1
1
0
0
1
0
Divide By 5*
(x1, -10)
1
1
0
1
0
1
Divide By 10
(x2, -100)
1
1
0
0
1
1
Divide By 50*
(x1, -100)
1
1
0
1
0
0
Divide By 100
*These
factors include both a resolution multiplier and a decade prescaler.
1 = V
DD
= High Level
0 = V
SS
= Low Level
Times 1
0
(x1, -10)
0
Divide By 10
(x1, -100)
0
Divide By 100
1 = V
DD
= High Level
0 = V
SS
= Low Level
1
1
1
0
0
0
0
1
1
0
0
0
0
1
0
ANTI-COINCIDENCE ADD/SUBTRACT MODES
For Anti-Coincidence Add/Subtract counting, input
“A”
serves as the Add
Input and
“B”
serves as the Subtract Input. This mode is identical to the Anti-
Coincidence Summing Mode with the exception that all counts appearing at
“B”
will now subtract from the total counts. Both inputs respond to the negative
going transition in the Times 1 Mode.
TABLE IV illustrates the level settings of the Mode Select Inputs for the
various modes for Anti-Coincidence Add/Subtract counting.
Note: The maximum count rate for all Anti-Coincidence counting modes is 20
KHz.
QUADRATURE COUNTING MODES
For Quadrature Times 1 counting, input
“A”
serves as the count input while
input
“B”
serves as the quadrature input.
(Input “B” is a pulse train shifted 90
o
away from “A”.)
The counter will count in a positive going direction when
“A”
is a negative going signal and
“B”
is low. The counter will count in a negative
going direction when
“A”
is a positive going signal and
“B”
is low. All
transitions on
“A”
are ignored when
“B”
is high. These logic rules provide the
basis for anti-jitter operation which will prevent false counts from occurring,
due to back-lash, vibration, chatter, etc.
TABLE II illustrates the level settings of the mode select inputs for the
various modes of quadrature counting. The Times 2 Quadrature Mode works
the same as Times 1 when
“B”
is low. But when
“B”
is high, counts are no
longer ignored at
“A”.
Instead, the logic rules for
“A”
are complemented,
allowing both edges of
“A”
to be counted. This gives an effective doubling of
display count but more importantly, doubles the resolution of the input. The
Times 4 Mode extends this even further. Both
“A”
and
“B”
serve as count or
quadrature input. In one instance,
“A”
will be the count input and
“B”
will be
the quadrature input. In another instance,
“B”
will be the count input and
“A”
will be the quadrature input. This will result in counts and resolution four
(4)
times greater than in the Times 1 Mode. For counting rates on these modes,
refer to the specification sheet
(X2, X4, -10, -100 give an equivalent divide-by
2.5, 5, 25, and 50).
TABLE IV
MODE
MS6
MS5
MS4
MS3
MS2
MS1
Times 1
0
(x1, -10)
0
Divide By 10
(x1, -100)
0
Divide By 100
1 = V
DD
= High Level
0 = V
SS
= Low Level
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
DECIMAL POINT AND LEADING ZERO BLANKING
SELECTION
TABLE V illustrates the level
settings required for decimal point
selections, except for the last one
shown, have leading zero blanking.
As can be seen from the Table, the
zero immediately to the left of the
decimal point is turned on, while
digits to the left of that zero are
turned off.
TABLE V
MODE
TABLE II
MODE
MS6
MS5
MS4
MS3
MS2
MS1
Times 1
1
1
0
1
1
1
Times 2
1
1
1
0
0
0
Times 4
1
1
1
0
0
1
(x4, -10)
1
1
1
1
0
1
Divide By 2.5*
(x2, -10)
1
1
1
0
1
0
Divide By 5
(x1, -10)
1
1
1
1
1
0
Divide By 10*
(x4, -100)
1
1
1
1
0
0
Divide By 25
(x2, -100)
1
1
1
0
1
1
Divide By 50*
(x1, -100)
1
1
1
1
1
1
Divide By 100*
*These
factors include both a resolution multiplier and a decade prescaler.
1 = V
DD
= High Level
0 = V
SS
= Low Level
Test Mode
*
0
0.0
0.00
0.000
0.0000
0.00000
000000
D.P.3
D.P.2
D.P.1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
* Test Mode is intended for
factory use only.
3
TYPICAL APPLICATIONS
BI-DIRECTIONAL UP/DOWN COUNTING
In this application, a continuous coating of adhesive is applied
to a flexible material, which is then taken up on a large roll.
Whenever a flaw is detected, the entire process is stopped. Since
inertia exists in the system, a certain amount of over-run will
occur. This, in turn, will require reversing the system in order to
bring the flaw back to the adhesive applicator. The SUPER SUB-
CUB can be used to correct the over-run problem by causing the
count to decrease when the process is reversed.
The SUPER SUB-CUB is set up for Bi-Directional UP/DOWN
counting. The Latch pin is used to
“freeze”
the display when a
defect occurs. Input
“A”
serves as the count input which is
connected to an open collector output LSC Length Sensor. This
sensor generates 100 pulses/foot of material travel.
(With 100
pulses/foot going into the counter, the decimal point is selected so
that the display will indicate feet and hundredths of feet.)
Input
“B”
serves as the UP/DOWN direction control pin. This pin is
connected to a contact which opens when the system reverses
direction, causing the counter to count
“down”.
Since the unit is
measuring in hundredths of a foot and very large rolls are used, it
is possible that the count could exceed the display capability of six
(6)
digits. To avoid this problem, a button is connected which,
when pressed, causes the unit to display the six
(6)
most
significant digits of the internal 8-digit counter. In addition, the
decimal point is removed when the button is held down.
The operation of the system is described as follows.
Whenever a flaw is detected, the Latch pin will be pulled high,
“freezing”
the display at the reading where the flaw occurred. At
the same time, the machine is stopped and the applicator is turned
off. Due to inertia within the system, internal counts increase
until the system comes to a complete stop. The operator then
notes the reading on the counter display, releases the latch pin
(the display then reveals the total length),
and reverses the
machine until the displayed value matches the noted value.
When this match occurs, the flawed area is beneath the applicator
area where it can be corrected.
QUADRATURE TIMES FOUR
In this application, it is necessary to keep track of the exact
position of a work table. The work table can be moved left or
right and is driven by a lead screw. Because the two requirements
of critical positioning and direction reversal must be satisfied, the
Quadrature Mode of the SUPER SUB-CUB is selected. An
RPGB with 10 PPR, quadrature, current sinking output is
coupled to the screw shaft. The screw shaft moves the table one
inch for every 25 revolutions which yields 250 pulses/inch of
travel. But in this application, a higher degree of resolution is
needed without using a higher resolution sensor. Therefore, the
Times Four Quadrature Mode is selected which results in 1000
pulses per inch of travel or 0.001" increments of resolution.
The drawing illustrates connections for the inputs and mode
select lines, including buffering of the two inputs.
(The diodes are
used to block the 12 VDC signal of the RPG from the SUPER
SUB-CUB inputs.)
The decimal point is placed in the third
position so the reading is in inches and one-thousandths of inches.
With the set-up shown, the operator can place the table at any
reference point desired, reset the SUPER SUB-CUB and make
all measurements with regard to this reference. Movement to the
left of this reference will provide a negative reading, while
movement to the right of this reference will provide a positive
numerical reading. Switching the count and quadrature inputs
will cause movement left to be positive
(+)
while movement to
the right will be negative
(-).
As shown in the drawing, the work
table is 53.475" to the left of the reference point.
4
TYPICAL APPLICATIONS (CONT'd)
ANTI-COINCIDENCE ADD/SUBTRACT
In this application, it is necessary to keep track of the number
of people in an enclosed area, both for security and safety
reasons. Typically, such places could be a nightclub, amusement
centers, government buildings, stores and other areas where
population count is important.
This function is accomplished by first counting the number of
people going into the area and next, subtracting the number of
people leaving the area. Since people could be entering and
leaving the area simultaneously, the counts would be lost if there
were not some means of accounting for the coincident counts.
The Anti-Coincidence Add/Subtract Mode of the SUPER SUB-
CUB satisfies this requirement.
The set-up for this application/system is illustrated as shown.
A turnstile, which has contact closure outputs, is used to activate
the inputs. The
“ENTER”
turnstile is connected to the Add Input
(“A”)
of the SUPER SUB-CUB while the
“EXIT”
turnstile is
connected to the Subtract Input
(“B”).
When people enter the
area through the
“ENTER”
turnstile, the counter is incremented.
When people leave the area through the
“EXIT”
turnstile, the
counter is decremented. Because the Anti-Coincidence Mode is
used, counts occurring at either input at any time will not be lost.
PANEL BEZEL KIT FOR THE SUPER SUB-CUB P/N HWK50000)
This kit provides a convenient way to adapt the SUPER SUB-CUB for panel mounting. The kit
includes the black plastic bezel, the panel and internal window gaskets, P.C. Board, 12" ribbon cable
and mounting screws.
ASSEMBLY
DIMENSIONS & PANEL CUT-OUT In inches (mm)
PANEL CUT-OUT FRONT VIEW
5
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