Red Lion GEMINI 33 User Manual

THE ASTRO LINE SERIES

GEMINI 3300 INSTRUCTION MANUAL

INTRODUCTION

The Gemini 3300 is another unit in our multi-purpose series of industrial control
products that are field-programmable to solve multiple applications. This series known
as the Astro-Line family of products, is built around the concept that the end user has the
capability to program different personalities and functions into the unit in order to adapt
to different indication and control requirements.

The Gemini 3300 which you have purchased, has the same high quality workmanship
and advanced technological capabilities that have made Red Lion Controls the leader in
today’s industrial market.

Red Lion Controls has a complete line of industrial indication and control equipment,
and we look forward to being of service to you now and in the future.

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

TABLE OF CONTENTS

I. GENERAL DESCRIPTION .............................................. 2

SafetySummary.................................................... 2

BasicOperation.................................................... 2-3

ProgrammingTheGemini3300 ........................................... 3

DisplayingtheProcess,Batch&TotalCountValues ............................... 3

ManualReset ..................................................... 3

ProgrammingFunctionCodes ............................................ 4

ProgrammingThePresets,ScaleFactor,TimedOutputs&CounterLoadValues ............... 4-5

FactorySettings ................................................... 6

OperatorAccessibleFunctionsWithProgrammingDisabled ........................... 7

Diagnostics,Self-Test,&“Watchdog”Timer .................................... 7

InputCircuitry&Set-up ............................................... 8

OverflowIndication .................................................. 8

II. PROGRAMMING INSTRUCTIONS FOR THE GEMINI 3300 BATCH COUNTER ................ 9

Codes41,43,44,45,&46 ............................................. 9-10

Codes52,53,54,&55 ................................................ 10-12

Codes61,62,63,64,65,66,PresetValues,ScaleFactor,&CounterLoadValues .............. 12-15

ProgrammingApplicationExample ......................................... 16-18

III. GEMINI 3300 20 MA CURRENT LOOP COMMUNICATIONS ........................... 19

CommunicationFormat ............................................... 19

Sending Commands & Data to the Gemini 3300 .................................. 19-21

ReceivingDatafromtheGemini3300 ....................................... 21

PrintOptions ..................................................... 22

CurrentLoopInstallation ............................................... 22-23

CommunicationsApplication ............................................. 24

Troubleshooting Gemini Serial Communications & Serial Loop-Back Self-Test ................. 25

IV. APPENDIX “A” - INSTALLATION & INPUT CONFIGURATION SWITCH SET-UP ............... 26-33

InstallationEnvironment................................................ 26

EMCComplianceInstallation............................................. 27

V. APPENDIX “B” - SPECIFICATIONS & DIMENSIONS ............................... 34-35

VI. APPENDIX “C” - TROUBLESHOOTING GUIDE .................................. 36-37

VII. APPENDIX “D” - FUNCTION COMMAND CODE SUMMARY .......................... 38-41

VIII. APPENDIX “E” - SCALING FOR COUNTING ................................... 42-43

IX. APPENDIX “F” - GEMINI 3300 PROGRAMMING CHARTS ............................ 44-46

X. APPENDIX “G” - ORDERING INFORMATION ................................... 47

-1-

GENERAL DESCRIPTION

The Gemini 3300 isa two input, microprocessor-based BatchCounter with
two Process Presets, a Batch Preset, and corresponding outputs. The 6-digit
display features 0.56" LEDs with negative sign, overflow, display mode, and
Process output indicators. The unit is available with a 20 mA Current Loop
Communications Option, which makes possible remote or computerized
monitoring and modification of the CountValues,Presets and Scale Factor.

Flexibility and usefulness are provided through user programmability.
With simple front panel keystrokesand rear panel switch settings, any one of
a number of configurations can be selected. Once the selection is made, all or
part of the keyboard can be disabled to protect the settings andguarantee that
no unwanted changes occur during the measurements.

Each time the power is turned off,the unit automatically saves the settings
and data in its specialno power memory. When power is restored, the Gemini
sets itself back to the operational modes and restores the data it had at
power-down. The “no power” E
cycles of power being applied to and removed from the unit.

Whenever the power comes on, the Gemini 3300 performs a series of
internal diagnostics to verify the integrity of the stored data. There is also a
self-test mode and a “watchdog” timer to help prevent processor lockup.

The Gemini 3300 can accept uni-directional, bi-directional, or quadrature
signals. It also has the capability to double or quadruple (Quadrature x4) the
resolution of the incoming count signal. There are also modes available for
anti-coincidence applications. Both channels of count information are
monitored simultaneously, no counts are lost, and the final output can be
chosen as the sum or difference of the two input channels.

The Gemini 3300 20 mA Current Loop Communications option provides
the capability of two-way serial communications between the Gemini 3300
and a variety of equipment,such as a printer, remote terminal, programmable
controller, or host computer. The baud rate can be set to 300, 600, 1200, or
2400 baud. The format for transmitted and received data is 1 start bit, 7 data
bits, 1 parity bit(odd), anda stop bit. When utilizingan external power supply
(30 VDC max), up to sixteen units can be installed in the loop, each with an
individual address. When utilizing the Gemini’s 20 mA current source, up to
seven units can be installed in a loop. The Count Values, Presets, and Scale
Factor can be interrogated or changed by sending the proper command codes
and numerical data(if required) tothe unit. Otherfunctions, such asresetting
the various counters, can also be performed. Various “Print Options” can be

2

PROM’s life expectancy is at least 100,000

selected to automatically interrogate the Count Values, Presets, and Scale
Factor by activating the “Print Request” terminal or by sending a “Transmit
Per Print Option” (P) command.

The relays are mounted on a plug-in board which makes it easy to field
upgrade the Gemini3300. The contactsare rated for240 VAC or 28 VDC at
5amps.

The construction of the Gemini 3300 features a metal die-cast bezel,
offering maximum durability with a high quality appearance. The sealed
front panel meets NEMA 4/IP65 specifications for washdown and/or dust
when properly installed. Clamp type pressure plate terminals accept stripped
#14 AWG wire without lugs.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in
the manual or onequipment must be observed toensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.

Do not use this unit to directly command motors, valves, orother actuators
not equipped withsafeguards. To do so, can be potentiallyharmfulto persons
or equipment in the event of a fault to the unit.

BASIC OPERATION

The Gemini 3300 contains three counters that keep track of the Process
Count, Batch Count, and Total Count. When a count edge is received, the
Process Counter and the Totalizing Counter are adjusted. When displaying
the Process or TotalCounts, the processor takes theraw count (actual number
of count edges that have been entered) and multiplies it by the Scale Factor
and Scale Multiplier and the results are displayed. The Batch Count register,
which is adjusted eachtimea batch has been completedis displayeddirectly.

Both the Process Counter and Batch Counter have six Reset Action modes
associated with them. Both of them can be independently configured to
operate in Reset to Zero (up-count) or Reset to Preset (down-count) modes,
and in manual or auto reset modes.

The Process Counter displays the value of display units in the current Batch
cycle. The Preset 2 Value of the Process Counter determines the number of
display units per batch cycle. When the Process Counter reaches Preset 2
(up-count modes) or zero (down-count modes), Output 2, and Relay 2 will
activate and the Batch count will be adjusted by one. The Batch

-2-

Counter will display the number of batches that have been completed (up-count
modes) or the number of batches left to complete (down-count modes).

The Total Countis the total number of counts that havebeen received since
the Total was last reset. It can be used to keep a running total of process units
on a desired pershift, per day, per week,etc. basis.Like the Process and Batch
Counts, the Total can be reset independently of the other two.

The internal precision of theProcess and Totalizing Counter is maintained
to 9 digits. The internal precision of the Batch Counter is 7 digits.

PROGRAMMING THE GEMINI 3300

When your Gemini 3300 arrives from the factory, it is necessary to
program the unit to suit the desired application. It is programmed with the
factory settings listed in the “Factory Settings” section. All programming is
accomplished by using the pushbuttons located on the front panel. The
personality, functions, and modes are accessed by pressing the appropriate
keys. A function is defined by atwo-digit code which appears on the leftside
of the display. The mode of that function is shown as a one-digit code on the
right side ofthe display. At timesthere will be a“-” sign modifier tothe left of
the mode.

Data for the Presets, Scale Factors and Timed Output Values are entered
differently. Each digit key controls the digit on the display directly above it.
Changing the digits can be done by repeatedly pressing the key beneath the
digit position you wish to change or by holding the key down. As you hold it
down, or repetitively press it, the value of that digit will change cyclically,
counting up to 9, then to 0, and then up again. The 6 numbered keys
correspond to the six digits, and the “+/-” key corresponds to polarity.

DISPLAYING THE PROCESS, BATCH & TOTAL COUNT
VALUES

The Gemini 3300can display anyof the three count values. There are three
annunciators to the left of thedisplay with thedesignations, P, B, and T. Only
one annunciator will be lit at one time. These annunciators correspond to the
Process, Batch andTotal count values. To display a different value,the “+/-”
key is repeatedly pressed and released until the annunciator corresponding to
the desired count value is displayed. Each time the key is pressed, thedisplay
will sequence to the next count value and the appropriate annunciator will
light. Once thedisplay has been changed,the unit will displaythe count value
until it is changed again.

MANUAL RESET

There are two different methods by which the Gemini 3300’s count values

can be manually reset. These methods are as follows:

Reset by front panel Reset button, “R”
Rear Reset terminal
Reset utilizing 2-button reset

The reset operation is affected by three function code settings; The Reset
Button, and Reset Terminal Actuation modes (Function Code 61),theReset
Action modes (Function Codes 62 and 63),andthe“Operator Accessible

Functions” modes (Function Code 66).The“Reset Button and Terminal
Actuation Modes” will determine whichcounters will be reset whenthe Reset

button or terminal is activated. The Reset Action modes determine whether
the Process or Batch Counter will Reset to Zero or Reset to Preset. The
“Operator Accessible Functions” modes will determine which resetting
modes are enabled, when the “PGM. DIS.” (program disable) terminal is
connected to “COMMON”. The Reset button can be disabled independently
of the Reset terminal by setting the “DIS./EN.RST.” position of the Input
Configuration DIP switches to “DIS.”.

A 2-button reset method is provided to allow an independent reset for the
Process and Batch counters. To reset a counter using this method, the
following procedure must be used.

Press the “E” key,

While holding the “E” key also press the

“1” button to reset the Process Counter, or the

“2” button to reset the Batch Counter.

Note: There is no 2-button reset mode for the Total Counter. It can be

independently reset by loading a Counter Load Value of 0.

-3-

PROGRAMMING FUNCTION CODES

Entering function and mode is easily accomplished by
pressing the appropriate digit key. To program the Scale
Multiplier, you would enter 45 by pressing the front panel
keys, 4 and 5.

The digits on the left side of the display show the
function code; the digits on theright side showthe current
programmed mode.

A new mode selection is made by entering a new
number. On some of the entries, you have the option of a
plus “+” or minus “-” sign. In the cases where a “+” sign is
required, no sign will be displayed. If you do enter a “-”
sign (using the “+/-” key), a minus sign will be displayed
in front of the appropriate digit.

Pressing the “E” key finalizes the change. The display
will now show the count value immediately.

If you do not press the “E” key, the change will not be
recorded. The display will remain in the programming mode
for 15 seconds, and then return to normal operating mode
using the old function and mode settings.

The unit can be programmed with the factory settings by
calling up Function Code 41, putting a “-” in front of the
mode by pushing the “+/-” key, and entering it.

Refer to the “Factory Settings” section for more details.

PROGRAMMING THE PRESETS, SCALE FACTOR, TIMED
OUTPUTS & COUNTER LOAD VALUES

The Presets andScale Factor Values are commonly reprogrammed on adaily
basis. As such, single keystroke access has been provided on the front panel.

Pressing the “3” key will call up the Scale Factor.

Once the Scale Factor is displayed, changing the digits
can be accomplished by repeatedly pressing thekey beneath
the digit position you wish to change or by holding the key
down, allowing the digit to increment automatically.

The new value willbe entered when the “E” keyis pressed.

The internal unscaled Process and Total Count Values
are multiplied by the Scale Factor Value, which changes
the displayed values accordingly.

Presets 1 and 2 are assigned to the Process Counter and the Batch Preset is
assigned to the Batch Counter. To call up the Preset for the desired counter,
the Gemini 3300 must first be displaying that count value.

To display the Preset 1 Value (Process Counter),the
“+/-” key is first pushed (if necessary) until the “P”
(Process) annunciator is lit.

The “1” key is then pushed to call up the Preset 1 Value.

To change the value, the digits can be cycled through in
the same manner as discussed for the Scale Factors.

The new value willbe entered when the “E” keyis pressed.

The Preset 2 Value is changed in the same manner as
described above except that the “2” key is pushed instead
of “1”. To change the Batch Preset, the “1” key is pushed
while the Batch Counter is being displayed. The Preset
Values can range from 0 to +999999.

-4-

The Timed Output Values are changed by entering two-digit function
codes. After the code is entered, the display will show the present Timed
Output 1, 2 or B Value in seconds with two decimal place resolution. The
Timed Output Values can be set from .01 to 599.99 seconds.

It is possibleto change thecounter values of the Gemini 3300 byentering a
“Counter Load Value”. This feature can be enabled or disabled by the
programming of the“Operator Accessible Functions Modes”, function code

66. The “Counter Load Value” is stored when the unit is powered down. To
access the Counter Load Value for the desired counter;
first, press the “+/-” key,if necessary,so that the display is
indicating the counter that is to be changed.

To change the Timed Output 1 Value, enter function
code 53 and enter the new value by holding down or
repeatedly pressing the key below the digit position you
wish to change.

The new value will be entered when the “E” key is
pressed. The display will immediately return to the
count value.

Note: A Timed Output Value of zero cannot be programmed into the Gemini

3300. If a value of0 is entered into the display, and the “E” keyis pressed,

the unit will remain in data entry mode. If a new value is not entered, it will

time out and the unit will continue to use its previous setting.

As with the other functions, you must press “E” to record the changes.For
the data entry modes, if you do not press the “E” key, a time out of 5 seconds
occurs, and the display returns to operating mode without any changes to the
value. The only time any change will occur is when the “E” key is pressed.

Secondly, press the “E” key and while holding it down,

press the “+/-” key.

The Gemini will now display the Counter Load Value

for the Counter that is displayed.

To change the value, press the key under the digit to be

changed as explained previously for the Preset.

To load the value into the counter, press the “E” key.
The display will flash momentarily and will display the
counter with the new value.

-5-

FACTORY SETTINGS

INITIAL FACTORY CONFIGURATION

Keys Struck Display Description

4,3 43 1 Count with Inhibit

4,4 44 1 Count on falling edge of Input A

4,5 45 1 Scale Multiplier of 1.0

4,6 46 1 Leading zero blanking and no decimal point

5,2 52 5 Output 1 terminates after Timed Output, Normal Phase

5,3 0000.10 Timed Output 1 Value of 0.1 sec

5,4 54 5 Output 2 terminates after Timed Output, Normal Phase

5,5 0000.10 Timed Output 2 Value of 0.1 sec

6,1 61 4 Reset Process, Batch, and Total Counter

6,2 62 1 Process Counter, Manual Reset to Zero

6,3 63 1 Batch Counter, Manual Reset to Zero

6,4 64 3 Output B terminates at reset. Normal output phase

6,5 0000.10 Timed Output B Value of 0.1 sec

6,6 66 6 Presets, Scale Factor 2-Button Reset, & Counter

3 01.0000 Scale Factor set to 1.0000

1 000100 Preset 1 set to 100 (when Process Count displayed)

2 000200 Preset 2 set to 200 (when Process Count displayed)

1 000010 Preset B set to 10 (when Batch Count is displayed)

E & +/- 000000 Counter Load Values set to 0 (displays value for

Note: Entering a -1 in function code 41 will restore the unit to the factory configuration
shown above.

Load Programming Enabled

displayed counter)

-6-

OPERATOR ACCESSIBLE FUNCTIONS WITH
PROGRAMMING DISABLED

(For details on keyboard entry, see preceding section)

One of the important features of the Gemini 3300 is the ability to disable
programming. With this ability, accidental bumping of the keys or tampering by
unauthorized personnel canbe prevented. However,it may be necessary toallow
reset and certain programming functions, such as Presets and the Scale Factor
Value, to be changed indaily operation. The Gemini3300, through theuse of the
“Operator Accessible Functions” Modes can enable these functions even when
the “PGM. DIS.” (Program Disable) terminal is connected to “COMMON”.

The “Operator Accessible Functions” modes areprogrammedby entering
a two-digit function code (66) and the desired mode. Unlike other function
codes, the mode doesnot take effect immediately. The “PGM. DIS.” terminal
must be connected to “COMMON” in order for the Gemini to disable
programming and operate as per the mode programmed.

There are six basic “Operator Accessible Functions” Modes available.
These modes enable the following functions.

1. NO FUNCTIONS ENABLED

2. PRESET PROGRAMMING ENABLED

3. SCALE FACTOR PROGRAMMING ENABLED

4. SCALE FACTOR AND PRESET PROGRAMMING ENABLED

5. PRESET, COUNTER LOAD PROGRAMMING, AND 2-BUTTON

RESET ENABLED

6. PRESET, SCALE FACTOR AND COUNTER LOAD PROGRAMMING,

AND 2-BUTTON RESET ENABLED

Note: In all of the modes above, the Reset button and terminal are enabled.

All of these modes can be modified with the addition of a “-” sign. The

minus sign disables the manual reset, at the front panel and the reset

terminal at the rear of the unit.

There is also a rear panel DIP switch which permits disabling of the front
panel reset button. This is independent of the rear reset terminal, and can be
used in conjunction with any front panel disable mode.

DIAGNOSTICS, SELF TEST, & “WATCHDOG” TIMER

The security of the Gemini 3300 is further enhanced by its self-test

diagnostic and “watchdog” timer capabilities.

The diagnostics are concerned with the special, no power memory of the
Gemini 3300. When power is turned off, all pertinent function settings and
measurements are automatically saved. When power is restored, the
functions and data are re-instated. This allows you to program the unit once
and not have to re-program it until you wish to use it in another mode.

When the function codes and data are saved, computations are made with
these values. The result of these computations is stored in the memory to
serve as a check against possible error. On power-up the same computations
are repeated on the stored data. If the results do not agree with the stored
results, a “P” will appear on the left side of the display. If thisoccurs, refer to
the “Troubleshooting Guide” for directions.

Another error indicator is the “watchdog” timer. In order to insure the
software is functioning properly, the program constantly monitors itself. If
the proper sequence and timing of internal events does not occur,an “E” will
appear on the left side of the display. If this occurs, refer to the
“Troubleshooting Guide” for directions.

The final type ofbuilt-in errorchecking is the front panelinitiated self-test.
It can beperformedat any time, evenwhen the Gemini 3300 is running. It will
not interfere withthe accumulation of counts or control functions.A function
code of “6”, “+/-” starts the test. At this time, whatever was displayed will
disappear and be replaced by a string of decimal points and the overflow
indicator. Then the display will show a string of 9’s, then 8’s etc., until a
string of 0’s are shown. The self-test will then turn off the overflow indicator
and activate the minus “-” sign. Then the unit shows an interlace pattern of

-010101, then -212121, followed by 232323 etc., until 898989 is reached. At
this time the outputs can be tested by pressing the “1” key for Output 1, the
“2” key for Output 2, and the “3” key for Output B.

(The program disable terminal must be disconnected in order to allow
activation of the outputs. Also, when testing theoutput, use caution, so as not
to cause any undesirable or hazardous conditions in the system.) An

automatic exit willtake place aftersix seconds or immediately if the Program
Disable terminal is connected to common. Normal length of display time for
each of the patterns is approximately 0.5 sec. Rapidly pressing “E” during
self-test can speed up the sequence.

-7-

INPUT CIRCUITRY & SET-UP

There are two independent input channels on the Gemini 3300. Various
types of sensor outputs can be accommodated by appropriate DIP switch
set-up. These include: TTL orCMOS logic,currentsinking, current sourcing,
or dry contact and more.

Channel A consists of a logic input and a separate low level magnetic
pickup input.

Channel B is a completely independent count or control input channel.
Like Channel A, it canbe programmedwith DIP switches for awide variety of
logic inputs, and is identical to Channel A in this regard. For a complete
detailed description of input set-up, see Appendix “A”.

OVERFLOW INDICATION

The Gemini 3300 features an overflow indicator (LED) which is located to
the left ofthe sixth digitand above the polarity annunciator.This LED will turn
on if the capacity of the display (6-digits) is exceeded or if the internal count
capacity (9-digits, 7 digits for batch counter) is exceeded. Use of extremely
small scale multiplier and Scale Factor Value can cause the internal count
(Process and Total) capacity to overflow before the displayed value would
overflow. For example, if a Scale Factor of 0.0001 and a Scale Multiplier of

0.001 is used, for every 10,000,000 count edges received, the display would
increment by 1. Before the display reaches 215, the internal counter would
overflow. When the capacity of the display is exceeded, the countvalue will be
maintained and will be valid. But if the internal count capacity is exceeded,
then this value will no longer be valid. The internal Process and Total count
values will overflow after 2,147,483,647 counts have been entered. The count
information will become invalid after 4,294,967,295 counts. At this point the
counter will change sign and the displayed count will decrement in value.

The internal count capacity for the Batch Counter is 16,777,216. This
amounts to overflowing the Batch Counter display over 16 times. If this
number is exceeded, the counter will rollover to zero, however, thedisplayed
digits will no longer be valid. It should also be noted that the use of a Scale
Factor larger than one could cause the displayed Process or Total value to
overflow before 999,999 counts are accumulated.

The Batch and Totalizing counters should not be allowed to operate in the
overflowed condition. As soon as, or before the counters overflow, the
information should be recorded and the counters reset.

-8-

PROGRAMMING INSTRUCTIONS FOR THE GEMINI 3300 BATCH COUNTER

The first part of this section provides detailed descriptions of the function
command codes for Input response modes, reset modes, output termination
modes, etc. Then, using an actual application example, the programming
instructions are “walked through” to give the user a full understanding of the
Gemini 3300 programming procedure. The descriptions below give the
function command code first, followedby the individual mode identifier. The
Function Command Summary in Appendix “D”, lists all codes.

CODE 41 - FACTORY SETTINGS

When Code 41 is called up, the unit will display a 1 as the mode.Entering a
“-” sign in front of the mode will cause the unit to re-load the factory settings
as shown in the “Factory Settings” section.

CODE 43 - INPUTS A & B RESPONSE MODES

The Gemini 3300 has six different input response modes that will directly
affect the Process Counter and the Total Counter. They are: Count (A) with
Inhibit (B); Count (A) with Up/Down Control (B); Two input
anti-coincidence Add (A)/Subtract (B); Two input anti-coincidence Add
(A)/Add (B); Quadrature; and Quadrature x4.

[43 1] COUNT WITH INHIBIT - Input A serves as the count. Input B serves

as the Inhibit input. When Input B is low, the counter will ignore the count

signal appearing at Input A. When Input B is at a high level, the signal

appearing on Input A will be counted. The “Process Counter Reset Action

Modes” will determine the count direction for the Process Counter. In

applications where the Inhibit function is not actually used, the Input B

“SRC/SNK” position of the “INPUT CONFIGURATION DIP SWITCH”

should be setto the “SNK” positionto provide a 7.8Kohm pull-up resistor.

This will set Input B to the Non-Inhibit state.
[43 2] COUNT WITH UP/DOWN CONTROL - In this mode,count direction

can be controlledby the second input.Input A serves asthe count input and

Input B serves as the direction control signal input.

When Input B is at a high level, the counter will count up. When Input B is

at a low level, the counter will count down.

[43 3] TWO INPUT ANTI-COINCIDENCE ADD/SUBTRACT - This mode

effectively separates count pulses which may simultaneously appear at the
two inputs. The Gemini unit processes the count pulses into a string of
time-separated pulses, so the internal counter will not lose any count
pulses. Input A serves as the add input (count increments) and Input B
serves as the subtract input (count decrements).

[43 4] TWO INPUT ANTI-COINCIDENCE SUMMING - Input A and B are

summed or added in the same manner as above. This mode is
uni-directional. The “Process Counter Reset Action Modes”, will
determine the count direction for the Process Counter.

[43 5] QUADRATURE COUNTING - Quadrature counting modes are

primarily used in positioning and anti-jitter applications. The reason this
mode works is due to the manner in which two pickups are positioned
relative to each other. The signal on Input B is a pulse train signal shifted
90° away from the Input A signal. These two signals are processed by the
Gemini as follows:
Input A serves as the count, while Input B serves as the quadrature input.
For quadrature with single edge counting, the counter will count in a
positive direction when Input A is a negativegoing edge andInput B is at a
low level. The counter will count in a negative direction when Input A is a
positive going edge and InputB is at a low level. All transitionson Input A
are ignored when Input B is at a high level. These logic rules provide the
basis for anti-jitter operation which will prevent false counts from
occurring due to back-lash, vibration, chatter, etc.
When two edge counting is used, the quadrature mode works the same as
with single edge counting when Input B is low. But when Input B is at a
high level, counts at Input A are no longer ignored. Instead the logic rules
for Input A are complemented, allowing both edges of Input A to be
counted. This doubles the effective resolution of the encoded input.

-9-

CODE 43 - INPUTS A & B RESPONSE MODES (Cont’d)

[43 6] QUADRATURE TIMES 4- This modetakes the quadraturemode, with

two edgecounting, one step further. In quadrature times 4, both Input A and

Input B serve as the count or quadrature input, depending on their state. In

one instance, Input A will serve as the count input and Input B will serve as

the quadrature input. In another instance, Input A will be the quadrature

input and Input B will be the count input. This enables each edge, positive

and negative going, of both inputs, A and B, to be counted. This results in a

resolution four times greater than in the basic quadrature x1 mode.

CODE 44 - NUMBER OF COUNT EDGES

The Gemini 3300 can be programmed for either single (negative going edge)
or two edge (x2) counting. The number of count edges cannot be set when the
count mode is programmed for quadrature x4 operation. The Gemini will ignore
any attempt to enter Function Command Code 44 when set for quadrature x4.

[44 1] SINGLE EDGE COUNTING (x1) - The unit counts on the negative

going (falling) edge of the count input signal.The count mode descriptions

describe how each mode uses this method of edge counting.
[44 2] TWOEDGE COUNTING (x2) - This mode is used whendoubling of the

count signal input isrequired. The unit counts on the positive going (rising)

edge of the countinput signal,as well as the negativegoing (falling)edge.

CODE 45 - SCALE MULTIPLIER

There are four Counter B Scale Multipliers that are available. They
effectively divide the internal Process and Total Count Values by 1, 10, 100,
and 1000 respectively, to yield the displayed values. (Note: Use of a small

scale multiplier in conjunction with a small Scale Factor could cause the
internal count value to be exceeded before the 6-digit display value is
exceeded.) See “Overflow Indication” section for more details.

[45 1] x1
[45 2] x 0.1
[45 3] x0.01
[45 4] x0.001

CODE 46 - DECIMAL POINT & LEADING ZERO BLANKING

There are six basic modes of decimal point placement for the Process and
Total counter of the Gemini 3300. The decimal point is placed to the right of
the display digit that corresponds to the mode identifier. (The right most
decimal point, digit 1, is never turned on.) A “-” sign in front of the mode
identifier will inhibit leading zero blanking. The absence of a “-” sign will
enable leading zero blanking.

[46 1] 0
[46 2] 0.0
[46 3] 0.0 0 LEADING ZERO
[46 4] 0.0 0 0 BLANKING
[46 5] 0.0000
[46 6] 0.00000

[46-1] 000000
[46-2] 00000.0
[46-3] 0000.00 LEADINGZERO
[46 -4] 0 0 0.0 0 0 BLANKING INHIBITED
[46-5] 00.0000
[46-6] 0.00000

CODE 52 - OUTPUT 1 TERMINATION MODES

The Gemini 3300 has five “Output 1 Termination Modes”, which control
the way Output 1 (O1) will terminate or reset. An Output 1 response will
occur when theProcess Counter reaches the Preset 1 Value (when counting in
the “normal” count direction). In all modes, Output 1 will terminate
immediately when the Process counter is manually reset.

A reverse phase mode is available on the Gemini 3300. This refers to the
complementing of the logic state of the output. With normal phase operation,
when the Process counter value reaches Preset 1, Output 1 will turn on. The
reset condition of Output 1is output off. In reverse phase operation, Output 1
turns off when Preset 1 is reached. The reset condition of Output 1 is output
on. (Note: The state of the relay, if used, is also reversed.) A “-” sign in front
of the mode identifier will provide for reverse phase operation. The absence
of a “-” sign will indicate normal phase operation.

-10-

[52 1] TERMINATE AT OUTPUT 2 START - Output 1 (O1) will terminate

when Output 2 starts. Output 1 is set for normal phase operation.

[52 2] TERMINATE AT OUTPUT 2 END - Output 1 (O1) will terminate

when Output 2 ends. Output 1 is set for normal phase operation.

[52 3] TERMINATE AT MANUAL RESET - Output 1 (O1) activates when

the Process Counter Value reaches the Preset 1 value. In this mode, once
Output 1 is activated,itdoes not deactivate untilthe moment amanualreset
occurs. Output 1 is set for normal phase operation.

[52 4] TERMINATE AT MANUAL RESET END - This mode is like the

preceding, except Output 1 (O1) deactivates when manual reset ends.
Output 1 is set for normal phase operation.

[52 5] TERMINATE AFTER TIMED OUTPUT 1 - Once Output 1 (O1) has

been activated, it will deactivate after the predetermined length of time
(Code 53) has expired. Manual reset will override the timed output and
reset Output 1. Output 1 is set for normal phase operation.

[52 -1]
[52 -2]
[52 -3] These modes are the same as above with the exception
[52 -4] that the output is set for reverse phase operation.
[52 -5]

CODE 53 - TIMED OUTPUT 1 VALUE

The Gemini 3300 has the capability of varying the Timed Output 1 Value
from 0.01 second to 599.99 seconds. When the code is entered, instead of a
single mode identifier digit beingdisplayed, six digits willbe shown.Refer to

“Programming the Presets, Scale Factor, Timed Outputs & Counter Load
values” section for more details about entering. The timed output will be

terminated if the Process counter is manually reset.

Note: A Timed Output value of zero cannot be programmed into the Gemini

3300. If a value of 0 is entered into the display and the “E” key is pressed,

the unit will not enter the 0, but will stay in the data entry mode. If a new

value is not entered, it will time out and the unit will continue to use its

previous setting.

CODE 54 - OUTPUT 2 TERMINATION MODES

The Gemini 3300 has five “Output 2 Termination Modes”,which control the
way Output 2 (O2) will terminate or reset.An Output 2response will occurwhen
the Process Counterreaches the Preset 2 value orzero. In all modes, Output2 will
terminate immediately when the Process Counter is manually reset.

A reverse phase mode is available on the Gemini 3300. This refers to the
complementing of the logic state of the output. With normal phase operation,
when the Process counter value reaches Preset 2, Output 2 will turn on. The
reset condition of Output 2is output off. In reverse phase operation, Output 2
turns off when Preset 2 is reached. The reset condition of Output 2 is output
on. (Note: The state of the relay, if used, is also reversed.) A “-” sign in front
of the mode identifier will provide for reverse phase operation. The absence
of a “-” sign will indicate normal phase operation.

[54 1] TERMINATE AT OUTPUT 1 START - Output 2 (O2) will terminate

when Output 1 starts. Output 2 is set for normal phase operation.
[54 2] TERMINATE AT OUTPUT 1 END - Output 2 (O2) will terminate

when Output 1 ends. Output 2 is set for normal phase operation.
[54 3] TERMINATE AT MANUAL RESET - Output 2 (O2) activates when

the Process Counter reaches the Preset 2 value or zero. In this mode, once

Output 2 is activated,itdoes not deactivate untilthe moment amanualreset

occurs. Output 2 is set for normal phase operation.
[54 4] TERMINATE AT MANUAL RESET END - This mode is like the

preceding, except Output 2 (O2) deactivates when manual reset ends.

Output 2 is set for normal phase operation.
[54 5] TERMINATE AFTER TIMED OUTPUT 2 - Once Output 2 (O2) has

been activated, it will deactivate after the predetermined length of time

(Code 55) has expired. Manual reset will override the timed output and

reset Output 2. Output 2 is set for normal phase operation.

[54 -1]

[54 -2] These modes are the same as above with the exception

[54 -3] that the output is set for reverse phase operation.

[54 -4]

[54 -5]

-11-

CODE 55 - TIMED OUTPUT 2 VALUE

The Gemini 3300 has the capability of varying the Timed Output 2 Value
from 0.01 second to 599.99 seconds. When the code is entered, instead of a
single mode identifier digit beingdisplayed, six digits willbe shown.Refer to

“Programming the Presets, Scale Factor, Timed Outputs & Counter Load
Values” section for more details about entering. The timed output will be

terminated if the Process Counter is manually reset.

Note: A Timed Output Value of zero cannot be programmed into the Gemini

3300. If a value of 0 is entered into the display and the “E” key is pressed,

the unit will not enter the 0, but will stay in the data entry mode. If a new

value is not entered, it will time out and the unit will continue to use its

previous setting.

CODE 61 - RESET BUTTON & TERMINAL ACTUATION
MODES

Since there are three counters integrated intothe Gemini 3300,various modes
are available to provide the desired reset response to the activation of the front
panel Reset button, “R”, or rear “RST” terminal. The mode selected, determines
which counter(s) will reset when the reset button or terminal is activated.

There are two ways the manual reset can act on the unit. The first is a
“maintained” reset action, in which the unit is held reset as long as the reset
button or terminal is activated. If the Process Counter is held in “maintained”
reset, counting on all three counters will be inhibited. The second is a
“momentary” action in which the unit resets and starts counting immediately,
even though the reset button or terminal may still be activated. A “-” sign
preceding the mode identifier indicates “momentary” reset action. The absence
of a “-” sign indicates “maintained” reset action.

[61 1] RESET PROCESS COUNT ONLY
[61 2] RESET BATCH COUNT ONLY
[61 3] RESET PROCESS AND BATCH COUNT
[61 4] RESET PROCESS, BATCH AND TOTAL COUNT

[61 -1]
[61 -2] These modes are the same as above with the exception
[61 -3] that reset is set for “Momentary” operation.
[61 -4]

CODE 62 - PROCESS COUNTER RESET ACTION & PRESET
TRACKING MODES

The “Process Counter Reset Action Mode” determines how the Process
Counter can be reset and the type resetaction thatwill occur. In the manual reset
modes, reset can only occurby activation of the Reset button, resetterminal (See
“Reset Button & Terminal Actuation Modes” - Code 61), 2-button reset, or
through serial communications. In the “Auto Reset” modes the Process Counter
can be reset manually and canalso be resetwhen the ProcessCounter reaches the
Preset 2 value, orzero,or after Timed Output 2,depending onthe mode selected.

A Preset tracking mode is also incorporated in Function Code 62. A “-”
sign preceding the reset action mode indicates that Preset tracking is enabled.
The absence of a “-” sign indicates that Preset tracking is disabled.

If Preset tracking is enabled, whenever the Preset 2 value is changed, the
Preset 1 valuewill also change so that the offsetbetween Preset 2 and Preset
1 remains the same. The amount of offset is changed by changing the Preset
1 value. For example, if Preset 2 is 100 and it is desired that Preset 1 occurs
20 counts before Preset 2, thePreset 1 value would be set to 80. If Preset 2 is
then changed to200, Preset 1 will automatically change to 180, maintaining
the same 20 count offset.

The Preset 1 Value cannot be changed when Preset tracking is enabled and
the “PGM.DIS.” (Program Disable) terminal isconnected to“COMMON”.

[62 1] MANUAL RESET TO ZERO - Manualreset to zero is accomplished by

pulling the “RST.” terminal to “COMMON” or, if the front panel reset is

enabled, bypressing the front panel resetbutton, or by using the “Two Button

Reset” (pressing the “E” key and the “1” key). Preset tracking is disabled.
[62 2] MANUAL RESET TO PRESET 2 - Manual reset to Preset 2 is

accomplished by pulling the “RST.” terminal to “COMMON” or, if the

front panel reset is enabled, by pressing the front panel reset button, or by

using the “Two Button Reset” (pressing the “E” key and the “1” key).

Preset tracking is disabled.
[62 3] AUTOMATIC RESET TO ZERO AFTER TIMED OUTPUT 2 - The

Process Counter automatically resets to zero when Timed Output 2 ends.

The “Output 2 Termination Mode” should be programmed for timed

output operation, [54 5], when in this mode. Preset tracking is disabled.

-12-

[62 4] AUTOMATIC RESET TO PRESET 2 AFTER TIMED OUTPUT 2 -

The Process Counter automatically resets to Preset 2 when Timed Output 2
ends. The “Output 2 Termination Mode” should be programmed for timed
output operation, [54 5], when in this mode. Preset tracking is disabled.

[62 5] AUTOMATIC RESET TOZERO AT THEBEGINNING OF TIMED

OUTPUT 2 (AT PRESET 2) - In this reset mode, the Process Counter will
automatically reset to zero at the beginning of Timed Output 2 (at Preset

2). The Timed Output 2 Value (Code 55) must be shorter than the time
required for the counter to count to the Preset 2 Value, otherwise, Output 2
will appear to be latched on. The “Output 2 Termination Mode” should be
programmed for timed output operation, [54 5], when in this mode. Preset
tracking is disabled.

[62 6] AUTOMATIC RESET TO PRESET 2 AT THE BEGINNING OF

TIMED OUTPUT 2 (AT ZERO) -In this resetmode, the ProcessCounter will
automatically reset to Preset 2 at the beginning of Timed Output 2 (at zero).
The Timed Output 2 Value (Code 55) must be shorter than the time required
for the counter to count to zero, otherwise, Output 2 will appear to be latched
on. The “Output 2 Termination Mode” should be programmed for timed
output operation, [54 5], when in this mode. Preset tracking is disabled.

[62 -1]
[62 -2]
[62 -3] These modes are the same as above with the exception
[62 -4] that Preset Tacking is enabled.
[62 -5]
[62 -6]

CODE 63 - BATCH COUNTER RESET ACTION MODES

The “Batch Counter Reset Action Mode” determines how the Batch Counter
can bereset and thetype reset action that willoccur. In themanual reset modes, the
Batch Counter can only be reset by activation of the Reset button, reset terminal
(See “Reset Button & Terminal Actuation Modes” - Code 61), 2-button reset, or
through serial communications. In the “Auto Reset”modes,the Batch Countercan
be reset manually and can also be reset when the Batch Counter reaches the Batch
Preset value or zero (reset to Preset modes), or after the Batch Timed Output.

[63 1] MANUAL RESET TO ZERO - Manual reset to zero is accomplished

by pulling the “RST.” terminalto “COMMON”or, if the front panelreset is
enabled, by pressing the front panel reset button, or by using the “Two

Button Reset” (pressing the “E” key and the “2” key).

[63 2] MANUAL RESET TO BATCH PRESET - Manual reset to Batch

Preset is accomplished by pulling the “RST.” terminal to “COMMON” or,
if the front panel reset is enabled, by pressing the front panel reset button,
or by using the “TwoButton Reset”(pressingthe “E” key and the“2”key).

[63 3] AUTOMATIC RESET TOZERO AFTER BATCH TIMED OUTPUT

- The Batch Counterautomatically resets to zero when Batch Timed Output
ends. The “Batch Output Termination Mode” should be programmed for
timed output operation, [64 5], when in this mode.

[63 4] AUTOMATIC RESET TO BATCH PRESET AFTER BATCH TIMED

OUTPUT - The Batch Counter automatically resets to Batch Preset when
Batch Timed Output ends. The “Batch Output Termination Mode” should be
programmed for timed output operation, [64 5], when in this mode.

[63 5] AUTOMATIC RESET TOZERO AT THE BEGINNING OFBATCH

TIMED OUTPUT (AT BATCH PRESET) - In this reset mode, the Batch
Counter will automatically reset to zero at the beginning of Batch Timed
Output (at Batch Preset). The Batch Timed Output Value (Code 65) must
be shorter than thetime required for thecounter to count to theBatch Preset
Value, otherwise, the Batch Output will appear to be latched on. The
“Batch Output Termination Mode” should be programmed for timed
output operation, [64 5], when in this mode.

[63 6] AUTOMATIC RESET TO BATCH PRESET AT THEBEGINNING OF

BATCH TIMED OUTPUT (AT ZERO) - In this reset mode, the Batch Counter
will automatically reset to Batch Preset at the beginning of Batch Timed Output
(at zero). The Batch Timed Output Value (Code 65) must be shorter than the
time required for the counter to count to zero, otherwise, the Batch Output will
appear to be latched on. The “Batch Output Termination Mode” should be
programmed for timed output operation, [64 5], when in this mode.

CODE 64 - BATCH OUTPUT TERMINATION MODES

The Gemini 3300 has three “Batch Output Termination Modes”,which
control the way Batch Output (OB) will terminate or reset. A Batch Output
response will occurwhen the BatchCounter reaches theBatch Preset value or
zero. In all modes, the Batch Output will terminate immediately when the
Batch Counter is manually reset.

-13-

CODE 64 - BATCH OUTPUT TERMINATION MODES (Cont’d)

A reverse phase mode is available on the Gemini 3300. This refers to the
complementing of the logic state of the output. With normal phase operation,
when the Batch counter value reaches the BatchPreset, the Batch Output will
turn on. The resetcondition of the BatchOutput isoutput off. In reversephase
operation, the Batch Output turns off when the Batch Preset is reached. The
reset condition of the Batch Output is output on. A “-” sign in front of the
mode identifier will provide for reverse phaseoperation. The absence ofa “-”
sign will indicate normal phase operation.
[64 3] TERMINATE AT MANUAL RESET - The Batch Output (OB)

activates when theBatch Counterreaches the Batch Presetvalue or zero. In

this mode, once the Batch Output is activated, it does not deactivate until

the moment a manual reset of the Batch Counter occurs. The Batch Output

is set for normal phase operation.
[64 4] TERMINATE AT MANUAL RESET END - This mode is like the

preceding, except the Batch Output (OB) deactivates when manual reset

ends. The Batch Output is set for normal phase operation.
[64 5] TERMINATE AFTER TIMED BATCH OUTPUT - Once the Batch

Output (OB) hasbeen activated, it willdeactivate after the predetermined

length of time (Code 65) has expired. Manual reset will override the

timed output and reset the Batch Output. The Batch Output is set for

normal phase operation.

[64 -3] These modes are the same as above with the exception
[64 -4] that the output is set for reverse phase operation.
[64 -5]

CODE 65 - BATCH TIMED OUTPUT VALUE

The Gemini 3300 has the capability of varying the Batch Timed Output
Value from 0.01 second to 599.99 seconds. Whenthe code is entered, instead
of a single mode identifier digit being displayed, six digits will be shown.
Refer to “Programming the Presets, Scale Factor, Timed Outputs & Counter
Load Values” section for more details about entering. The timed output will
be terminated if the Batch Counter is manually reset.

Note: ATimed Output Value of zerocannot be programmed into theGemini 3300.

If a value of 0is entered into the displayand the “E”key is pressed,the unit will

not enter the 0, but willstay in thedata entry mode.If a newvalue is not entered,

it will time out and the unit will continue to use its previous setting.

CODE 66 - “OPERATOR ACCESSIBLE FUNCTIONS” MODES

The Gemini 3300 hassix basiclevels of “Operator AccessibleFunctions”.
Each of these levels can be modified to enable or disable manual reset. When
the “PGM. DIS.” (Program Disable) terminal is connected to “COMMON”,
access to all functions is disabled except for those listed below which will
remain enabled. All ofthe function codes and parameters can be interrogated,
regardless of the “Operator Accessible Functions” mode selected.

A “-” sign in front of the mode identifier will disable the front panel Reset
button and the “RST.” terminal.

Note: The frontpanel reset button can beindependently disabled by usingthe

disable reset DIP switch.

[66 1] NOFUNCTIONS ENABLED EXCEPT RESET - In this mode, manual

reset is enabled, but none of the programming functions can be changed.
[66 2] PRESET PROGRAMMING AND RESET ENABLED - In this mode,

manual reset and the programming of the Preset Values are enabled.
[66 3] SCALE FACTOR PROGRAMMING AND RESET ENABLED - In

this mode, manual reset and the programming of the Scale Factor Value

are enabled.
[66 4] SCALE FACTOR, PRESET PROGRAMMING AND RESET

ENABLED - In this mode, manual reset and the programming of the Scale

Factor and Preset Values are enabled.
[66 5] PRESET, COUNTER LOAD PROGRAMMING, 2-BUTTON RESET

AND RESET ENABLED - In this mode,manual reset and the programming

of the Presets, Counter Load Values and 2-Button Reset are enabled.
[66 6] PRESET, SCALE FACTOR, COUNTER LOAD PROGRAMMING,

2-BUTTON RESET AND RESET ENABLED - In this mode, manual reset

and the programming of the Presets, Scale Factor, Counter Load Values

and 2-Button Reset are enabled.

[66 -1]
[66 -2]
[66 -3] These modes are the same as above with the exception
[66 -4] that manual reset (Reset Button & Terminal) is disabled.
[66 -5]
[66 -6]

-14-