Liquid Controls SP2200 User Manual

TABLE OF CONTENTS

SPECIFICATIONS ..................................................................................................1

DECODING PART NUMBER..................................................................................2

HOW TO MOUNT THE UNIT..................................................................................3

WIRING.....................................................................................................................4

TYPICAL HOOKUPS ...............................................................................................5

WHAT CAN YOU VIEW ..........................................................................................6

OUTPUT JUMPER SELECTIONS..........................................................................6

MILLIVOLT INPUT OPTION JUMPER SELECTIONS............................................6

OPERATING FRONT PANEL.................................................................................7

PROGRAMMING FLOW CHART ...........................................................................7

PROGRAM CODES & DESCRIPTIONS ................................................................8

TERMINATIONS....................................................................................................10

CALCULATING SCALE FACTORS ........................................................................1

PROGRAMMING PROCEDURE...........................................................................12

SETTING SCALING FACTORS..............................................................................12

SETTING THE COUNTER......................................................................................13

SETTING THE RATE..............................................................................................14

SETTING THE LOCK CODE & LOCKING THE UNIT ............................................15

SETTING THE RELAYS & PRESETS ....................................................................16

OUTPUT WIRING ...................................................................................................18

ANALOG OUTPUT OPTION...................................................................................19

RS232/RS422 SERIAL COMMUNICATIONS.........................................................20

TROUBLESHOOTING GUIDE................................................................................23

WARRANTY ............................................................................................................24

DESCRIPTION & SPECIFICATIONS

DESCRIPTION:

The Dual Rate Totalizer is a dual 5 digit Ratemeter 6 digit
Totalizer in a 1/8 DIN package. User selects 1 of 6 displays to
show A,B or C rate and A,B or C total. Inputs A and B have
separate scaling to read in engineering units.
A 4-20mA (0-20mA) output of the C rate or total is optional.
The user can press the VIEW button to see 6 separate items
total A, total B, total C, rate A, rate B, rate C. Negative values are
displayed with a negative symbol ( ­user can choose from the following combination of A&B inputs:
TOTAL; with a choice of A+B or A-B; RATIO with choice of
A÷B(x100) to show percent of A to B quantity or A÷[A+B(x100)] to
show percent of A to total quantity.
Two independent presets are standard. User selects whether out­put A is activated by total or rate value of input A or selected C.
Output B can be activated by total or rate value of input B or
selected C. Outputs activated by A or B total can be set to latch or
autorecycle with an adjustable output duration from 00.1 to 99.9
sec. For rate, ratio, or C total outputs pull in when value is equal or
above the preset and drop out when value is below the preset
minus the selected 0 to 999 hysteresis.

SPECIFICATIONS:

DISPLAY

6 digit, 0.55" High LED

INPUT POWER:

110 VAC ± 15% or 12 to 15 VDC
220 VAC ± 15% or 12 to 15 VDC
24 VAC ± 15% or 12 to 15 VDC

CURRENT:

250 mA DC max. or 6.5 VA AC
OUTPUT POWER (AC powered units only)

+12 VDC @ 50 mA, unregulated -10 + 50%

TEMPERATURE:

Operating:

+32°F (0°C) to +130 F (+54°C)

Storage:

-40 F (-40°C) to +200°F (93°C)

MEMORY

EEPROM stores data for 10 years if power is lost.

INPUTS:

3: High Impedance DC pulse input 4-30 VDC (high), Open or 0-

1 VDC (low),10 KΩ imp. 10 kHz max. speed. Accepts simul­taneous inputs. May be used with KEP 711 series or PD & D
series sensors.

3M: Mag. Input, Input A only, accepts 30mV input (50 V max. P/P)

signals 10 KΩ imp. 5 kHz max. (Input B, 4-30V)

3MB: Mag. Input, Inputs A & B, accepts 30mV input (50 V max. P/

P) signals 10 KΩ imp. 5 kHz max.

NOTE: The Mag. inputs have filtering as follows: up to 300hz

@30mV, 5KHz @ .25V to 50V max.

12345

). For the C value, the

RESET:

Front Panel: Resets displayed value and control output
Remote: 4-30 VDC negative edge resets all counters,

"A" counter or "B" counter (user selectable).

K FACTOR/SCALING

The unit has two separate K-Factors that are used to convert the
input pulses to engineering units. The 5 digit K-Factor dividers,
with decimal keyed into any position, allow easy direct entry of any
K-Factor from 0.0001 to 99999. Separate factors may be entered
for the 2 separate input channels.

CONTROL OUTPUTS:

Relays:

2 each N.O. Relay; 10 Amps120/240 VAC or 28 VDC.
(N.C. relay contacts and NPN transistor output
available with solder jumpers. Transistor output is
internally pulled up to 10 VDC through relay coil, sinks
from 10 VDC to .5 V @ 100 mA)

Analog Output:

An optional 4-20mA (0-20mA) output is available for
the unit. The output can be programmed
to track rate or total of the C display. This feature is available
by adding suffix A to the part number. Connections are
via a 2 terminal pluggable screw connector.
Programming is accomplished by using the front panel
in conjunction with rear dip switches.
Accuracy: 50uA worst case.
Compliance Voltage: 3 to 30 VDC non inductive.

RS232/RS422SERIAL INTERFACE

If the serial interface option is supplied, up to 99 units can be linked
together. (The terminal addressing the unit must be capable of
driving all loads in the loop.) Unit status and new set points can be
communicated by serial communication. Mode changes, however,
must always be made on the front panel. Data is transmitted at
selected baud rates using standard seven bit ASCII characters and
parity with two additional bits of “Start” and “Stop” to make up the
standard ten bit character.
Data is received and transmitted over standard EIA RS232 or
RS422 levels. Each 10 bit character is made up of a start bit, 7 bit
ASCII code, parity bit and stop bit. Unit number, baud rate and
parity are entered in the “Program Setting” set up mode and remain
in memory even if power is off.
Note that the input impedance of RS232 is 3K or 7K Ohm worst
case. The terminal addressing the unit must be capable of driving
all loads in the loop. RS422 input impedance is much higher and
there is usually no problem driving 25 units. Unit serial transmit line
remains in a high impedance “OFF” state until addressed.

PRESETS

Two control outputs are provided. To set relay values, press “menu”
button until “Relay” appears on the display , the A and B outputs can
be assigned to the A,B or C displays. A 5 digit value can be entered
for both presets and the decimal point location is the same as the
counter. The outputs can be set to energize from 0.1 to 99.9
seconds or latch (0.0). If a value other than 0.0 is entered, the
counters will auto reset at the preset (for A&B counters).

1

SPECIFICATIONS

(continued)

DECODING PART NUMBER

LOCKOUT

Unauthorized front panel changes can be prevented by entering a
user selected 5 digit code. The front panel can be completely
locked out or the presets can remain accessible.

RATEMETER

Accurate to 4 1/2 digits (±1 display digit). The ratemeter uses 1/tau
with 8 digit math, can sample from 2 to 24 seconds maximum, and
auto-range up to 5 digits of significant information. In the “RPS”
mode, the ratemeter displays in units per second, and in the
“scale” mode, units per hour or per minute. The unit will display the
rate of the A&B Inputs.

COUNTER

The two 6-digit counters can count at 10Khz speed. Each has a
seporate 5-digit dividing scale factor. The counters advance on the
positive edge of each pulse. Besides being able to step through the
total and rate values of A & B inputs, the user can see a selected
combination of total or rate of A+B, A-B, A÷BX100 (percent of A to
B), A÷A+BX100 (percent of A to total). A negative display will be
veiwed as a 5 digit display with a negative symbol ( -

12345

).

Example: SP2200 A 3 A
Series:

6 digits counter, 5 digit ratemeter

with presets and scaling.

Operating Voltage:

110 = 110 VAC ± 15% or 12 to 15 VDC
220 = 220 VAC ± 15% or 12 to 15 VDC
24 = 24 VAC ± 15% or 12 to 15 VDC

Count Inputs:

3 = Standard, 4-30 VDC simultaneous inputs.
3M = Mag. Input, Input A only, 30mV input

(Input B, 4-30V)

3MB = Mag. Input, Inputs A & B, 30mV input

Options

1= RS232 Communications
2= RS422 Communications
A= Analog Output (4-20/0-20 mA)
CE = CE Approved Version

NOTE: RS232/RS422 & Analog Output options can not be combined

2

HOW TO MOUNT THE UNIT

The unit is designed to be mounted with a gasket providing a water tight seal. Two mounting brackets are provided to
secure the unit to the panel. A panel less than .1" may distort if the clamps are screwed too tightly.

Slide the body of the unit through the rubber gasket. Insert the unit into the panel. As shown in "FIG. A", slide the brackets
up the groove to press against the back of the panel. Insert screws into rear of brackets and tighten them evenly and
alternately. Do not over tighten! A normal level of torque is required. Maximum torque should be 3" pounds.

This product is designed to be panel mounted and is NEMA 4 rated if proper mounting procedures are followed and the
required and supplied hardware is correctly used.

If the panel in which the unit is mounted is less than .125 of an inch thick, the possibility exists that there will be some
flexing. Should this flexing occur, the resulting deformation of the panel could cause a loss of the water tight seal. In case
this should occur, the use of silicone or other sealant would be recommended.

This product is designed to the NEMA 4 rated. However, the fact that we are unable to control either the location in which
the device is installed or the actual installation itself requires that the company's liability shall extend only to the repair or
replacement of a defective product.

We are prepared to offer additional assistance in those special situations where normal mounting methods do not seem to
satisfy the customers needs. This assistance may be obtained by calling the factory and asking for Application Engineer­ing.

FIG A

DIMENSIONS

3.925
(99.7)

4.437

(112.7)

2.625

(66.68)

0.587

(14.91)

BEZEL

GASKET

4.245

(107.8)

CUSTOMER PANEL
Panel Thickness 0.062" (1.5)
to 0.187" (4.7) max.

3.622
(92)

1.772
(45)

3

WIRING THE SP2200

The rear terminal contains 12 screw terminals for connecting #14 to #28 gauge wire.
The unit is controlled by a microprocessor and, therefore, an electrically "noisy" environment could cause operating

problems. The input power line should not be common to power lines for motors, pumps, contactors, etc.
The unit is designed to be immune from line or RF voltage interference. In some environments voltage spikes of over 100

volts, even 1000 volts, can occur. When common to a power line driving motors voltage fluctuations can be extreme and
rapid. Lines driving DC or AC solenoids, relays, or actuators can also cause problems.

Four sources of noise can occur:

1) AC power line noise - If the unit cannot be connected to a clean power source, an inductive load suppressing device
(MOV as GE # V130LA1 or Resistor Capacitor as Paktron # .2 uf/220 ohm @ 400V) can be installed. Although locating
the suppressor across the AC supply at the unit should help, best results are obtained by connecting the suppressor
across the leads of the "load" at the device causing the spike.

2) Input line noise -The noise is carried on the input and D.C. ground lines. Make sure the input wires are never run into
the unit in a bundle with power input lines. Also, keep these input lines isolated from inductive lines from devices
drawing heavy loads. If there is a possibility of electrical noise, we recommend using shielded cable, with the shield
being hooked to the D.C. ground terminal on the instrument, and to "earth" at one point in the circuit, preferably at the
D.C. ground terminal of the unit.

3) Output lines - The unit has two relay outputs. When these outputs are used to run external relays or solenoids, spikes
can be generated upon activation. This noise can spread through the instrument causing operating problems. If the
source is a D.C. operated device, a general purpose diode (IN4004) placed across the solenoid prevents electrical
noise spikes. Connect the cathode (banded side) to the more positive side of the coil. If the source is an A.C. operated
device, use a MOV or Resistor Capacitor across the coil.

4) 12 VDC output supply - Noise can be generated on the 12 VDC output supply if it is used to drive inductive loads or if
the current draw exceeds 50 mA. Insure that all inductive loads have a diode (such as IN4004) across the coil and that
the current does not exceed 50 mA.

4

CONNECTING AC / DC POWER

NOTE: Connect power only after other connections are finished. Do not touch the live AC power terminals! The unit has
been designed with an isolated AC input. Thus, polarity is not a concern for the AC input. The chassis is plastic, therefore
earth ground is not used. For D.C. operation, connect + 12V to pin 7 and - D.C. to pin 8.

CONNECTING SENSOR INPUTS

These diagrams show how to hook typical input sensors to the unit. The unit supplies an unregulated 12 Volt (50mA)
output to power these sensors (Pin 7).

A valid pulse is one which makes a transition from the off-state (0 to 1V) to the on-state (4 to 30V): a positive going edge.
The input impedance is 10K Ohms to ground. The unit can be programmed from the front panel for slow switch closure
inputs up to 40Hz (select "Lo CPS"), or solid state switches (select "hi CPS") up to 9.99KHz. No rear terminal jumpers are
required. Use PNP (sourcing) type pulsers.

TYPICAL SENSOR HOOKUP

RELAYS

A

B

TURBINE FLOWMETER

1 COMMON

2 N.O. (N.C./NPN)

3 COMMON

4 N.O. (N.C./NPN)

5 A INPUT

6 B INPUT

7 12 V OUTPUT/ + DC INPUT

8 - DC (GROUND)

9 RESET INPUT

10 NOT USED

11 AC INPUT

12 AC INPUT

*

COUNT
POWER
GROUND

D08N

* PULLUP RESISTANCE

4.7K TYPICAL

POWER
COUNT

GROUND

D12P

TYPICAL FLOW SENSOR HOOKUP

STRIP CHART

RECORDER

+

-

PULSE OUTPUT
PULSE OUTPUT

+12V
GND

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

RELAYS

A

B

SWITCH

ON

13- V+
14- I SINK

OFF

RUN

4-20mA

RATE

RUN

1 2 3 4

OUTPUT

ON

CAL.
0-20mA
COUNT

SET

ANALOG

TURBINE FLOWMETER

5

J4

J5

J6

J3

J1

J2

CR1

R3

C8R7R5

R4

U1

CR2

REV

20229

CR6

CR3

U3

P1

R10R6C6

C7

CR4

CR5

C4

R2

R1

C3

C5

U2

U4

U6

U5

R8

R9

C1

C2

C9

B

SELECTABLE COMBINATIONS

A ADD B - Scaled A input added to the Scaled B input.
A SUB B - Scaled A input subtracted by the Scaled B input.
A / B - Scaled A input divided by the Scaled B input X 100 to show percent of A to B.
A / A + B - Scaled A input divided by the Scaled A input plus the scaled B input X 100 to show

percent of A plus B.

WHAT CAN YOU VIEW?

By pressing the VIEW button one time the user can veiw the active display. By pressing the VIEW button more than
once the user can step through all 6 displays to choose which display the user wishes to view.

tot a - Total of display A
tot b - Total of display B
tot c - Total of display C
rate a - Rate of display A
rate b - Rate of display B
rate c - Rate of display C

OUTPUT JUMPER SELECTIONS

FUNCTION
"A" RELAY

N.C. OUTPUT
"B" RELAY

N.C. OUTPUT
"A" PRESET

TRANSISTOR (NPN)

*

"B" PRESET
TRANSISTOR (NPN)

*

BOTTOM VIEW AT TERMINAL

L

20192

12 11 10 9 8 7 6 5 4 3 2 1

* The unit must be removed from the case to access jumpers C & F, all

other jumpers can be accessed by removing the plastic extender.

NOTE: All three pads at jumpers 2 and 4 are connected.

MODIFICATION
CUT JUMPER

AT "A" "B" TO "2"
CUT JUMPER

AT "D" "E" TO "4"
CUT JUMPER

AT "A" "C" TO "2"
CUT JUMPER

AT "D" "F" TO "4"

H

G

4

FC

DE

2

MILLIVOLT INPUT OPTION

JUMPER SELECTIONS

If the unit has the millivolt input bd.# 20229, A & B inputs can be
separately solder jumper programmed to accept either a low milli­volt or 4-30 V input. Each unit shipped is programmed according
to part number. If solder jumpers are made, the part number
should be modified to reflect the changes made.

AB

Input A J1-O, J2-C, J3-O J1-C, J2-O, J3-C
InputB J4-O, J5-C, J6-O J4-C, J5-O, J6-C

6

C=CLOSE, O=OPEN
4-30V INPUT Millivolt INPUT

OPERATING THE FRONT PANEL

1 4 2 3 5

Press to "reset"
in operating
mode. Press to
"enter" in
programming
mode.

RUN

MODE

E

PRGM

Press to
enter lock code
for panel lock.

PROGRAMMING FLOWCHART

PRGM

RST

ENTER

RST

ENTER LOCK PRE A PRE B VIEW PRGM

Press to view
or change
preset A.

A B C D

Press to view
or change
preset B.

E

Press to alternately
view A,B,or C
Rate / Total
displays.

Press this key to step through menu choices.

Press this key to enter displayed value

Press to cycle
through PRO­GRAM choices.
Press to toggle
between choices
in program
mode.

FACTOR

E

PRGM

COUNT

E

PRGM

RATE

E

PRGM

LOC

E

PRGM

RELAY

E

PRGM

ENTER

RST

ENTER

RST

ENTER

RST

ENTER

RST

ENTER

ENTER

a addb

asub b

a

/b

a

/a+b

RST

ENTER

RST

ENTER

RST

ENTER

PRGM

RST

ENTER

RST

ENTER

E

RST

ENTER

RST

b tot
b rate

#####

E

PRGM

figur#

rst al

rst 1

RST

ENTER

PRGM

RST

ENTER

RST

ENTER

E

PRGM

E

RST

ENTER

RST

ENTER

RST

ENTER

tot b

tot c

rate b
rate c

E

PRGM

dly ##

E

PRGM

rst a
rst b

RST

ENTER

du

RST

hy

ENTER

RST

ENTER

hy

RST

ENTER

hi cps

lo cps

RST

ENTER

RST

ENTER

##.#
##.#

##.#

ENTER

ENTER

RST

RST

RST

ENTER

RST

ENTER

E

PRGM

RST

ENTER

RST

ENTER

ENTER

RST

ENTER

RST

ENTER

RST

total

ratio

E

PRGM

E

PRGM

E

PRGM

#####

z 60
z 3600

code

tot a

tot c

rate a
rate c

RST

DP F a

DP loc

rps

E

PRGM

scale

lc all

E

PRGM

lc prg

a tot

E

PRGM

a rate

RST

ENTER

RST

ENTER

ENTER

ENTER

ENTER

ENTER

RST

DP F b

ENTER

E

PRGM

E

PRGM

RST

nor ##

ENTER

#####

RST

du

##.#

RST

hy

##.#

RST

hy

##.#

RST

RUN

MODE

7

The following is a list of abbreviations as they appear on the display and front panel of the unit.
ABBREVIATION DESCRIPTION

FACTOR

DP F A

DP F B

COUNT

DP LOC

total

ratio

A SUB B

A ADD B

SCALING FACTOR - For A and B Inputs. Each input has a separate 5 digit dividing scale factor.
DECIMAL POINT FOR FACTOR A - Enter location of decimal point for scaling Factor A by pressing the

button under the digit where the decimal is desired.
DECIMAL POINT FOR FACTOR B - Enter location of decimal point for scaling Factor B by pressing the

button under the digit where the decimal is desired.
PORTION OF MENU FOR SETTING COUNTER VARIABLES AND “C” DISPLAY COMBINATIONS.
DECIMAL POINT LOCATION - Enter desired location of decimal by pushing the button under the digit

where the decimal is desired. Changing the decimal will change the decimal location in the A,B&C total
as well as the rate displays.

TOTAL - Allows the unit to display A ADD B or A SUBTRACT B ( a add b or a sub b)
RATIO - Allows the unit to display A DIVIDED BY B X 100 to show percent of A to B or

A DIVIDED BY A PLUS B X 100 to show percent of A to A + B. ( A/B or A/A+B)
A SUBTRACT B - The number of scaled pulses from Input B are subtracted from the number of scaled

pulses from Input A. (-99999 TO 999999)
A ADD B - The number of scaled pulses from the A Input are added to the number of scaled pulses from the

B Input.

a / b A DIVIDED BY B - The number of scaled pulses of input A are divided by the number of scaled pulses of

input B X 100 to give the percent ratio of A ÷ B.

a / a+b A DIVIDED BY A PLUS B - The number of scaled pulses of input A divided by A plus the number of scaled

pulses of input B X 100 to give the percent ratio of A ÷ A + B.

RST al

rsT 1

HI CPS

LO CPS

RATE

RPS

SCALE

RESET ALL - When the remote reset is negative edged triggered, A,B, & C total displays are reset to 0.
The reset button (rst) will only reset what is being displayed. If the C display is reset both A&B displays
are reset as well.

RESET ONE - Will give a chose between resetting the A or B total displays. If the A display is chosen and the
remote reset is negative edged triggered, only the A display is reset. If B display is chosen the same applies.
The C display will update accordingly. The reset button (rst) will only reset what is being displayed.
If the C display is reset both the A&B displays are reset as well.

HIGH COUNTS PER SECOND - This sets the unit to accept high count speeds (0-9.99KHz)
LOW COUNTS PER SECOND – This sets the unit for contact debounce filtering (0-40Hz)
PORTION OF MENU FOR SETTING RATE VARIABLES
RATE PER SECOND - The display will read in rate per second.
SCALING - Allows unit to display rate per minute or rate per hour.

Z 60

DIVIDE K FACTOR BY 60 - This sets the unit for rate per minute; equal to 60 times rate per second.

8

Z 3600

DIVIDE K FACTOR BY 3600 - This sets the unit for rate per hour; equal to 3600 times rate per second.

NOR##

FIGUR ##

DLY##

LOC

LC PRG

LC ALL

CODE

RELAY

NORMALIZING FACTOR - Normalizes (averages) the data being received. Higher settings provide more
normalizing (averaging) for a more stable display. Derived from the equation:

(Old Data x "NOR" + New Data)

("NOR" + 1)
SIGNIFICANT FIGURE - This sets the amount (1-5) of meaningful figures the unit will display. (RATE DIS
PLAY ONLY). FOR EXAMPLE: If "2" is set as the figure, a rate of 273.45 will be displayed as 270.

DELAY FACTOR - The amount of time (02 to 24 sec.) the unit will "look" for valid data, before the display
defaults to zero. (RATE DISPLAY ONLY)

LOCK - This portion of the menu allows you to:

1) lock the program (presets and front reset are still accessible)

2) lock all (presets, front reset, and program are locked).
LOCK PROGRAM - This will lock the program, but allows the front reset and the presets to be changed when

the unit is in the lock mode.
LOCK ALL - This will lock the program, reset and the presets when the unit is in the locked mode. The

presets can be viewed, but not changed.
LOCK CODE - This message (code) will flash on display for approximately 3 seconds. It will be followed by a

5 digit number (xxxxx). The number you enter here will be the code to lock and unlock the unit.
RELAY - This portion of the menu allows you to set your relay operation variables.

A TOT

tot a RELAY A FOR A TOTALIZER - If selected, the A output is activated by A total and user can select auto

tot c RELAY A FOR C TOTALIZER - If selected, the A output is activated when C total is equal or greater then

A RATE

rate a RELAY A FOR A RATE - If selected, the A output is activated when A rate is equal or greater than preset A

rate c RELAY A FOR C RATE - If selected, output A is activated when C rate is equal or greater than preset A and

hy ##.# HYSTERESIS OF RELAY - 0 - 99.9 value which user selects as difference between activation and drop out of

du ##.# DURATION OF OUTPUT FOR A OR B TOTAL - If set 00.1 to 99.9 sec, selected counter autoresets at preset

RELAY A FOR TOTALIZER - When this is selected the user has a choice of having Preset A follow the A
(tot a) or C (tot c) display.

recycle with duration of 00.1 to 99.9 sec or latched till reset if 00.0 is programmed.

preset A and drops out when C total goes below preset A by selected 0 - 99.9 hysteresis.
RELAY A FOR RATE - When this is selected, output A will activate when the Rate of either display A or

display C (user selectable) equals or exceeds preset A. The relay will drop out when the selected rate falls
below preset A by selected 0 - 99.9 hysteresis..

and drops out when A rate goes below preset A by selected 0 - 99.9 hysteresis.

drops out when the C rate goes below preset A by selected 0 -99.9 hysteresis.

output for rate and “C” value. Output activates when value is equal or above preset but only drops out when
value is below preset by selected hysteresis value.

and output is active for selected time. If set 00.0 counter does not autoreset and output is active as long as
count is equal or above preset.

9

b TOT RELAY B FOR TOTALIZER - When this is selected, the user has a choice of having Preset B follow the B

(tot B) or C (tot c) display.

tot b RELAY B FOR B TOTALIZER - If selected, the B output is activated by B total and user can select auto

recycle with duration of 00.1 to 99.9 sec or latched till reset if 00.0 is programmed.

tot c RELAY B FOR C TOTALIZER - If selected, the B output is activated when C total is equal or greater then

preset B and drops out when C total goes below preset B by selected 0 - 99.9 hysteresis.

b RATE RELAY B FOR RATE - When this is selected, output B will activate when the Rate of either display B or

display C (user selectable) equals or exceeds preset B. The relay will drop out when the selected rate
falls below preset B by selected 0 - 99.9 hysteresis..

rate b RELAY B FOR B RATE - If selected, the B output is activated when B rate is equal or greater than preset B

and drops out when B rate goes below preset B by selected 0 - 99.9 hysteresis.

TERMINATION: REAR VIEW

ANALOG

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

RELAYS

A

B

SWITCH

ON

13- V+
14- I SINK

OFF

RUN

4-20mA

RATE

RUN

1 2 3 4

OUTPUT

ON

CAL.
0-20mA
COUNT

SET

Analog Out Setup SwitchesSerial Port

13 14

REAR VIEW

1 2 3 4 5 6 7 8 9 10 11 12

1 2 3 4

ON

10

CALCULATING SCALE FACTORS

There are two separate dividing scale factors, one for input "A" and one for input "B". The factor to enter is the number of
pulses per the desired unit of measurement. The factor ranges from 0.0001 to 99999. The factor is the same for rate and
count. Because the "units per second", "minute", or "hour" are field programmable from the keypad, scale factor calcula­tions for the ratemeter are easy. Here are some examples:

SCALING FACTOR EXAMPLES:

UNIT COUNTING:

You pick up a notch on a paper roll (1 pulse per shaft revolution). Each revolution equals 3 feet. To
find the number of pulses per foot, simply divide "1 pulse" by "3 feet" (1÷ 3 = .3333).
Solution - One foot equals 0.3333 pulses, enter this as the scale factor and the display will read in
feet.

RATE:

A conveyor carrying bottles must be controlled for bottle speed. For each revolution of the front roller, three bottles
travel by. Thus, one revolution equals 3 bottles. A wheel with seven spokes is mounted on the roller. The user
can't sense bottles because they are traveling through a washer, so a sensor is placed at the roller, sensing seven
pulse per revolution of the shaft, which equals 3 bottles per revolution.
To calculate the scale factor (7 ppr ÷ 3 bottles) = 2.3333 scale divider. Set rate per second, minute or hour as
desired.

FLOW IN LITERS:

A flow meter is generating 52.6 pulses per gallon. The desired readout is in liters. Since there are 3.785 liters per
gallon, divide 52.6 by 3.785 to find the number of pulses per liter (52.6 ÷ 3.785 = 13.897).
Enter 13.789 as the scale factor so the display will read in liters.

CUT TO LENGTH:

An aluminum sheeting plant has a cut to length application to customer specification. A 100 pulse per revolution
encoder with a 12" wheel is used to sense. The travel of aluminum sheets is in 0.1 inches. Thus, after 100 pulses,
you want 12.0 to appear on the display. Note that decimal point is for display only. Factor must be calculated to
show all desired units of measure. Thus, 100 ÷ 120 (total desired units of measure) = 0.8333. Enter 0.8333 as your
scale factor. Set “dummy”decimal point location to 0.0 under Program Count section.

FLOW BOILER OR MOTOR “A-B”:

Fuel usage of a boiler can be monitored using the “A-B” option. Separate factors can be entered for Factors “A”
and “B”, but the time base must be the same for rate.

11

PROGRAMMING

STEP

1

SETTING

SCALING

FACTORS

PRESS

PRGM

ENTER

ENTER

ENTER

DISPLAY

factor

dp f a

#####

dp f b

REMARKS

This section of the menu is used to set
up the scaling factors for inputs A & B.

This sets the decimal for factor A.
Press the arrow key under the digit
where the decimal is desired. To clear
the decimal, press the arrow key fur­thest to the right (PRGM) .

This is the scaling factor for input A. To
change, press the arrow key under the
digit(s). Press ENTER to enter the
displayed value.

This sets the decimal for factor B.
Press the arrow key under the digit
where the decimal is desired. To clear
the decimal, press the arrow key fur­thest to the right (PRGM) .

ENTER

#####

This is the scaling factor for input B. To
change, press the arrow key under the
digit(s). Press ENTER to enter the
displayed value.

12

STEP

2

SETTING

THE

COUNTER

PRESS DISPLAY REMARKS

factor

PRGM

This section of the menu sets up the
counter and combination “C” informa-

PRGM

count

tion.
This sets the decimal location for the

A,B&C counters. Press the arrow key

dp loc

ENTER

under the desired digit location. To
clear the decimal, press the arrow key
furthest to the right. Press the ENTER
key to enter the displayed location.

ENTER

ENTER

ENTER

ENTER

total

or

ratio

a sub b

or

a add b

a/b

or

a/a+b

rst al

or

rst 1

Press the program key to choose
Total or Ratio. Press the ENTER
key to enter the displayed choice.

This section will only appear if Total is
selected. Choose A SUB B (A subtract
B) or A ADD B. Press the ENTER key
to enter the displayed choice.

This section will only appear if RATIO
is selected. Choose A÷B or A÷A+B.
Press the ENTER key to enter the
displayed choice.

Press the PRGM key to choose
RESET ALL (resetting A,B&C displays)
or RESET 1 (resetting a choice of
either A or B display) Press the
ENTER key to enter the displayed
choice.

ENTER

ENTER

rst a

or

rst b

hi cps

or

lo cps

Press the PRGM key to choose
RESET A or RESET B. Press the
ENTER key to enter the displayed
choice.

Press the PRGM key to choose HIGH
CPS (0-9.99KHz) or LOW CPS (0­40Hz). Press the ENTER key to enter
the displayed choice.

13

STEP

3

SETTING

THE RATE

PRGM

PRGM

REMARKSPRESS DISPLAY

factor

count

PRGM

ENTER

ENTER

ENTER

ENTER

rate

rps

or

scale

z 60

or

z 3600

nor ##

figur #

This section of the menu is used to set up
the rate information.

Press the PRGM key to choose RPS (rate
per second) or SCALE (RPM, RPH). Press
ENTER to enter displayed choice.

Press PRGM to choose ÷60 (RPM) or
÷3600 (RPH). Press ENTER to enter dis­played choice.

This sets the normalizing (averaging) fac­tor. Press the arrow keys under the de­sired digits to change. Press ENTER to
enter displayed value.

This sets the number of significant figures
to be displayed. Press the arrow key un­der the digit to change. Press ENTER to
enter displayed value.

ENTER

dly #.#

This sets the delay time (2 to 24 sec.) that
the unit will "look" for valid input data be­fore the display falls to 0. Press the arrow
key under the digits to change. Press EN­TER to enter displayed value.

14

PRESS

DISPLAY REMARKS

STEP

4

SETTING

LOCK

PRGM

PRGM

PRGM

PRGM

ENTER

ENTER

factor

count

rate

loc

LC PG

or

LC ALL

CoDE

Flashes

followed by:

#####

This section of the menu is used to set up
the lockout type and code.

LC PG = Locks program but presets and
reset are accessible.
LC ALL= Locks entire keypad.
Press the PRGM button to toggle between
choices; Press ENTER to enter displayed
choice.

After CODE flashes the display will show the
existing lock code. To change the code press
the key under each digit to be changed. Press
ENTER to enter displayed value.

LOCK

AND

UNLOCK

UNIT

PRESS

LOCK

ENTER

CoDE

Flashes

followed by:

0

LoC

or

uN LoC

When in the run mode press LOCK. After
CODE goes out, key in the lock code (see
programming step 4) by pressing the keys
under the digits to be changed. Press the
ENTER key to enter the displayed code.

After the code is entered the unit will display
LOC (unit is locked) or UN LOC (unit is un­locked). This message will be displayed for
approximately 3 seconds before the unit re­turns to the run mode.

15

DISPLAYPRESS

REMARKS

STEP

5

SETTING

THE

RELAYS

PRGM

PRGM

PRGM

PRGM

PRGM

ENTER

ENTER

factor

count

rate

loc

relay

a tot

or

a rate

tot a

or

tot c

This section sets up the relay information.
Press the PRGM key to choose A TOT (A

relay assigned to total) or A RATE (A relay
assigned to rate). Press enter when the de­sired choice is displayed.

This section will only appear if a tot is se­lected. Press the PRG button to choose tot
a or tot c. Press the ENTER key to enter the
displayed choice

ENTER

ENTER

ENTER

ENTER

du ##.#

hy ##.#

rate a

or

rate c

hy ##.#

Set relay duration .1 to 99.9 sec.
Counter autoresets and relay is energized
for selected time. If 00.0 is selected counter
does not autoreset. Output is active if counter
is equal or above preset.

This is the hysteresis setpoint
for relay A (00.0 to 99.9). This section will
only appear if tot c is selected.

This section will only appear if a rate is
selected. Press the PRG. button to choose
rate a or rate c. Press the ENTER key to
enter the displayed choice.

This is the hysteresis setpoint
for relay A (00.0 to 99.9).

16

ENTER

b tot

or

b rate

Press the PRGM key to choose B TOT (B
relay assigned to total) or B RATE (B relay
assigned to rate). Press enter when the
desired choice is displayed.

ENTER

ENTER

ENTER

ENTER

tot b

or

tot b

du ##.#

hy ##.#

rate b

or

rate c

This section will only appear if b tot is se­lected. Press the PRG button to choose tot
b or tot c. Press the ENTER key to enter
the displayed choice

Follow same procedures as A ##.#

This is the hysteresis setpoint
for relay A (00.0 to 99.9). This section will
only appear if tot c is selected.

This section will only appear if b rate is
selected. Press the PRG. button to choose
rate b or rate c. Press the ENTER key to
enter the displayed choice.

SETTING

THE

PRESETS

ENTER

PRESS

PRE A

PRE B

hy ##.#

PRE A

Followed by last

PRE A entered

PRE B

Followed by last

PRE A entered

This is the hysteresis setpoint
for relay A (00.0 to 99.9).

PRE A = Preset A (Final Preset);
The set point at which output A
will trigger. If the displayed value
is not the desired preset, press
the key(s) under the digit to be
changed. Press ENTER to load
Preset

PRE B = Preset B (Prewarn);
The set point at which output B
will trigger. If the displayed value
is not the desired preset, press
the key(s) under the digit to be
changed. Press ENT to load
Preset

17

OUTPUT WIRING

The following diagrams detail the connection of the relay and analog output options. Each relay consist of a form A contact
(Normally Open). NPN transistor or Normally Closed contacts are available with solder jumpers (see Jumper Options).

SOLENOID (Single Stage)

Use Relay A (pins 1 & 2) for single stage preset. When the count or rate (selectable) reaches Preset A, Relay A will
energize. When Relay A closes, current passes through the solenoid for activation. When operating AC solenoids,
we recommend the use of an MOV to reduce inductive kickback (use a diode for DC solenoids).

ANALOG

OFF

RUN

RATE

RUN

OUTPUT

ON

CAL.
0-20mA
COUNT

SET

ANALOG OUTPUT

The analog output can be selected to output 4-20 mA or 0-20 mA and can be selected to track the rate or count of
the C display. Pin 13 supplies 12 to 18V to power the current loop. Pin 14 supplies the current sinking driver.
When connecting a strip chart recorder, make connections as follows:

SOLENOID

MOV
recommended

D08P

Prox Sensor

BLK
BRN

BLU

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

RELAYS

A

B

SWITCH

ON

13- V+
14- I SINK

4-20mA

1 2 3 4

ALARMS

STRIP CHART

13- V+
14- I SINK

OFF

RUN

4-20mA

COUNT

RATE
RUN

OUTPUT

ON

CAL.

0-20mA

SET

TURBINE FLOWMETER

RECORDER

+

-

PULSE OUTPUT
PULSE OUTPUT

+12V
GND

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

RELAYS

A

B

SWITCH

ON

1 2 3 4

ANALOG

TURBINE FLOWMETER

The relays can be used to trigger alarms which warn the operator that a batch is complete or the rate has
exceeded a set speed. The outputs are programmable to be assigned to the A,B or C rate/count. When
assigned to the count, the relays can have a user selectable on time (duration) or can be latched until reset.

ANALOG

OUTPUT

ON

CAL.
0-20mA
COUNT

SET

LIGHT

BELL

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

RELAYS

A

B

SWITCH

ON

13- V+
14- I SINK

OFF

RUN

4-20mA

RATE

RUN

1 2 3 4

18

ANALOG OUTPUT OPTION

Description:

An optional 4-20mA (0-20mA) output has been added to the unit.
The output can be programmed to track C rate or C total.
This feature is available by adding suffix A to the part number.
Connections are via a 2 terminal pluggable screw connector.

Connections: (see FIG. 1)
PIN13 supplies the 12 to 18 VDC to power the current loop.
PIN14 is the control sink driver

Accuracy:

50uA worst case

Compliance Voltage:

3 to 30 VDC non inductive

Setup:

The optional analog output feature uses 4 dip switches on the back
for setup. These switches are used as follows:

SW1 - View or change "set low" and/or "set high" values
SW2 - Select output for rate or total
SW3 - Select 4-20mA or 0-20mA
SW4 - Calibrate the unit.

After the regular parameters shown in the programming flowchart
have been set, locate the 4 switches on the back of the unit. (see
FIG. 1)

SWITCH 4: Calibrate (normally off)
Switch 4 is used for calibration. Calibration is done at the factory
and should not be needed (see SWITCH 1 to enter high and low
values). If recalibration is desired, a calibrated 20mA ammeter
with 1uA resolution is needed. Attach the "+" lead of the meter to
pin 13 and the "-" lead to pin 14. Set switch 4 ON (up). The unit
will output approximately 20.000mA and a decimal will light in the
third position. Read the output using the ammeter. Press PRE A.
If the display is the same as the ammeter reading, press ENTER.
If not, press buttons A through E to step to ammeter reading and
ENTER. (Disregard display which now shows the last count read­ing with decimal point in third position) Return switch 4 to OFF
(down) position.

Switch Settings:
SWITCH 1: Enter Analog Low & High (normally off)

Switch 1 is used to load in the low (4mA or 0mA) and/or the high
(20mA) output settings. With power on, set switch 1 ON (up).

LOW SETTING is viewed or changed by pressing PRE A. If the
displayed value is correct, press ENTER. If not, press buttons A
through E to step to the desired value and press ENTER. (disre­gard the display which will show the last count reading).

HIGH SETTING is viewed or changed by pressing PRE B. If the
displayed value is correct, press ENTER. If not, press buttons A
through E to step to desired value and press ENTER.

Return switch 1 to OFF (down) position, PRE A and PRE B buttons
now function to view or change relay trip values.

SWITCH 2: Select Count or Rate

SW2 OFF (down): Analog output follows C rate
SW2 ON (up): Analog output follows C count

SWITCH 3: Select 4-20mA or 0-20mA

SW3 OFF (down): Selects 4-20mA output range
SW3 ON (up): Selects 0-20mA output range

FIG. 1

Analog Out Setup SwitchesSerial Port

13

1

Typical Wiring:

TURBINE FLOWMETER

14

REAR VIEW

2

3

4

5

STRIP CHART

RECORDER

6

7

8

+

-

PULSE OUTPUT
PULSE OUTPUT

+12V
GND

9

10

1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT

11

1 2 3 4

12

RELAYS

A

B

SWITCH

ON

ON

13- V+
14- I SINK

OFF

RUN

4-20mA

RATE

RUN

1 2 3 4

ON

CAL.
0-20mA
COUNT

SET

ANALOG

OUTPUT

19

TURBINE FLOWMETER

INTERFACE CARD RS 232/422 OPERATION

RS 232/422 SET-UP:

All serial communication mode changes must be done
through serial communications. Mode changes cannot be
done through the front panel. To initialize the unit, place a
jumper between pin 7(+12V )[bottom board] and pin 1(init) [DB

-9 connector] on initial power up. The unit defaults to: 300
baud rate,"MARK" parity and device number 01. To enter the
program mode you must set your terminal for 300 baud rate
and "MARK" parity. Next, type D1(s), (s)= space bar. The
unit will echo back "DEVICE #1:". Now type EP (enter
program) and a carriage return (enter). The unit will echo back
"PROGRAM SETTING". You are now in the programming
mode.

SETUP PROCEDURE:

The following sections consist of the communications setup
options as they appear in the menu. (If you wish to exit the
program mode, at any time you can hit the "escape key" (Hex
Code: 1B) and the unit will save the changes made but not
effect the remaining data values.) When each section of the
setup menu is displayed, the current data will appear in the <
> signs. If you wish to change the data, type in the number
of the desired choice and press return (enter). If you wish to
keep the current data, simply press return.

DEVICE NUMBER:

Each unit in the hook-up must be assigned it's own device
number (1 to 99). Zero is reserved for a dedicated hook-up to
only one terminal, and it's transmit output line remains in an
"on" active state. The device number is entered in the
program mode. The unit will prompt you:
DEVICE# <XX>?
If XX is the desired device number press return (enter), if not
enter the desired number after the question mark and press
return (enter).

BAUD RATE:

The baud rate is the speed at which data is transmitted,
expressed in bits per second. Baud rates of 300, 600, 1200,
2400, 4800 or 9600 are available. When in the baud rate
section of the menu, the unit will list :
BAUD RATES:
1:300 2:600 3:1200
4:2400 5:4800 6:9600
then prompt you:
BAUD RATE <300>?
Press return (enter) if this is the desired baud rate or enter the
assigned number of one of the six possible baud rates. If an
invalid baud rate is entered the unit will prompt you to choose
another baud rate. This will occur until a valid baud rate is
entered or escape is pressed.

PARITY:

Parity is a bit of information that is inserted before the stop bit
and is used to help check if the transmission is correct. When
setting the parity you may select "ODD" (parity bit is logic 0 if
total number of logic 1's in the first seven data bits is odd),
"EVEN" (parity bit is logic 0 if total number of logic 1's in the first
seven data bits is even), "MARK" (parity bit is always logic 1

- High / Mark) or "SPACE" (parity bit is always logic 0 - Low /

Space). If a "MARK" parity is chosen, it will appear that two
stop bits are used. Use the "MARK" parity with terminals using
parity "OFF" or "NONE". These terminals ignore the parity.
The unit does not check the parity but does transmit the parity
chosen. When setting the parity, the unit will print:
PARITIES:
MARK-0 SPACE-1 EVEN-2 ODD-3
Then the unit will prompt you:
PARITY<MARK>?
If this is the desired parity press return (enter), if it isn't enter
the number of the desired parity then press return (enter).

STROBE LIST:

The serial interface card is also equipped with a strobe line.
When the strobe line is triggered, a chosen set of data will be
transmitted to be displayed or printed. The selections for the
display list are entered in the program mode. Enter "1" to add
selections to the list and enter "0" to delete selections from the
list. The seven available items for the strobe display list are:
(1) Count B, (2) Count C, (3) Rate B, (4) Rate C, (5) Rate A,
(6) Count A, (7) Reset A. If “Reset A” selected, the A counter
is reset after other selected data is sent. This can be used to
Print/Reset at preset by connecting Relay to strobe and +DC.
Select “Reset All” and jumper strobe to pin 9 to reset both
counters after print. NOTE: Due to cycle time of 2 sec @ 300
baud (0.4 sec @ 9600 baud), counts may be lost if received
while cycling)

When setting the strobe list the unit will print :
ENTER STROBE LIST:
DO NOT DISPLAY-0 DISPLAY-1
The unit will prompt you:
COUNT B<DISPLAY>?
COUNT C<DISPLAY>?
RATE B<DISPLAY>?
RATE C<DISPLAY>?
RATE A<DISPLAY>?
COUNT A<DISPLAY>?
RESET A<DISPLAY>? (If selected, Resets Count A at end of
selections)
If the above choices are entered, when the strobe line is
triggered (3-30V positive pulse) the unit will transmit:
DEVICE# 1:
DB XXXXX
DCXXXXX
EBXXXXX
ECXXXXX
EAXXXXXX
DAXXXXXX
RA
(SEE COMMANDS BELOW FOR DESCRIPTION OF COM­MAND CODES).
Each time the strobe line gets triggered the unit will transmit
this data unless the program mode is entered and the strobe
list altered.

After these four items have been entered they will remain
unaltered unless the program mode is entered again and the
values changed. The unit is now set and must be addressed
by it's device number to come on line again.

20

SERIAL INPUT COMMANDS:

To get a unit on line you must address it by it's device number.
This is done by typing DXX(S), XX= device number. The unit
comes on line and echoes back DEVICE# XX. Insure that
"DEVICE# XX:" is received before requests are sent. The unit
is now ready to receive a command or string of commands
separated by a space. A carriage return (enter) will enter the
commands and processing of requests begins. The carriage
return (Hex Code "D") puts the unit "off line" after data is
processed.

COMMANDS:

EP...........Unit will enter program mode.

DA..........Unit will display (transmit) Count A.

DB..........Unit will display (transmit) Count B.

DC..........Unit will display (transmit) Count C.

EA..........Unit will display (transmit) Rate A.

EB..........Unit will display (transmit) Rate B.

EC..........Unit will display (transmit) Rate C.

KA..........Unit will display K-factor A.

†*KA(S)XXXXX....Unit will load K-factor A

with entered number.

KB..........Unit will display K-factor B

†*KB(S)XXXXX....Unit will load K-factor B

with entered number.

PA...........Unit will display Preset A.

†PA(S)XXXXX....Unit will load Preset A with

entered number.

PB...........Unit will display Preset B

†PB(S)XXXXX....Unit will load Preset B with

entered number.

RA..........Reset Counter A and output

†*RA(S)XXXXXX...Unit will set Counter A to
entered number.

RB..........Reset Counter B and output

†*RB(S)XXXXXX...Unit will reset Counter B to

entered number.

*THE UNIT WILL RECOGNIZE A DECIMAL IF ONE IS
PLACED IN ANY OF THESE DATA VALUES.

The input impedance of RS232 is 3KΩ to 7KΩ worst case. The
terminal addressing the unit must be capable of driving all
loads in the loop. The input impedance of RS422 is much
higher and there should be no problem driving as many as 99
units. The transmit line remains in a high impedance "off"
state until addressed. Only one unit is to be on line at a time!!!
More than one unit on line could damage the unit or destroy
the transmitted data.
When the unit is active (on line) it will operate in a full duplex,
echo back mode, so that data sent from the terminal will be
transmitted back for verification. When the unit is "on line",
use the proper serial transmit commands to request data or
set a new value. Up to 80 characters of data can be linked
together and transmitted to the unit in a string as long as there
is a space between the commands. If an error is made, a
correction can be made by back spacing and retyping correct
data before the return (enter) is sent. Once a return (enter) is
sent, the unit begins processing the data and will transmit the
requested data on a non-priority basis over the data transmit
line. A keypad entry or incoming data will halt the data
communication cycle. Therefore, there should be a pause
after data is requested to insure that all data has been
transmitted before making another request or addressing
another unit. If the unit is not busy, it should not take longer
than 300 msec to process each request. To find the cycle time
to process and transmit a request, calculate the bit transmit
time by using this formula: [(1÷ baud rate) x (80) + .005] x
number of requests made. This time will be extended if the
unit must service the front keypad. If transmission has not
started within two seconds after data is requested, it can be
assumed that there is a problem. The unit transmits a carriage
return and line feed after each data value. Any new commu­nication must be started with DXX(S) (device number and
space).

RS232/RS422 - IBM-PC INTERFACE:

The following program is for IBM basic to set up RS232/RS422
on serial port (#1) at 300 baud. Run this program after
connecting the serial interface connections.

†THE UNIT WILL ONLY RECOGNIZE THE LAST FIVE
DIGITS ENTERED (SIX DIGITS FOR RA & RB).

The following is an example of requests and responses:
Transmit from terminal Receive from unit

(s)=Space
D5(s) [Unit #5 Activated] DEVICE# 5:
PA(s)12345(s)PA PA 12345 PA
KA(s)1576(s)KA KA 1576 KA
KB(s)6751(s)KB KB 6751 KB
RA(s)RB[RETURN] RA RB
(UNIT PRESETS AND A & B K-FACTORS ARE SET AND
BOTH COUNTERS ARE RESET)

12345
1576
6751

SERIAL INTERFACE OPERATION:

Data is received and transmitted over standard EIA RS232 or
RS422 levels. Each ten bit character is made up of a start bit,
seven bit ASCII code, a parity bit and a stop bit. Device
number, baud rate, parity and strobe list are entered in the
program setup mode and will remain in memory even if power
is lost.

10 SCREEN 0,0:WIDTH 80
20 CLS:CLOSE
30 OPEN "COM1:300,n,7,1,CS,DS,CD" AS #1
40 ON ERROR GOTO 110
50 B$=INKEY$
60 IF B$< >"" THEN PRINT #1,B$;
70 IF EOF (1) THEN 50
80 A$=INPUT$ (LOC(1),#1)
90 PRINT A$;
100 GOTO 50
110 RESUME

21

RS232 / RS422 WIRING

234

5

678

9

COMPUTER HOOKUP:
RS 232: When connecting the unit to a computer with RS 232

communication, only three connections are needed. These
connections are: Receive data, Transmit data and Ground.
The connections should be made as follows:

DP -9 CONNECTOR COMPUTER
Transmit data (pin 2) Receive data
Receive data (pin 3) Transmit data
Ground (pin 5) Ground

RS 422: When connecting the unit to a computer with RS 422,
five connections are needed. These connections are: Re­ceive data A (+), Receive data B (-), Transmit data A (+),
Transmit data B (-) and Ground. The connections should be
made as follows:

DP -9 CONNECTOR COMPUTER
Transmit data A(+) (pin 2 Receive data A(+)
Transmit data B(-) (pin 7) Receive data B(-)
Receive data A(+) (pin 3) Transmit data A(+)
Receive data B(-) (pin 8) Transmit data B(-)
Ground (pin 5) Ground

RECEIVE PIN (3)
TRANSMIT PIN (2)
GROUND PIN (5)

RECEIVE A(+)PIN (3)

RECEIVE B(-)PIN (8)
TRANSMIT A(+)PIN (2)
TRANSMIT B(-) PIN (7)
GROUND PIN (5)

RS 232

1. INITIALIZE

2. TRANSMIT

3. RECEIVE

4. N/C

5. GROUND

6. STROBE

7. N/C

8. N/C

9. N/C

RS 232

RS 422

1

DB9 Male Connector

RS 422

1. INITIALIZE

2. TRANSMIT A (+)

3. RECEIVE A (+)

4. N/C

5. GROUND

6. STROBE

7. TRANSMIT B (-)

8. RECEIVE B (-)

9. N/C

RS 232

PRINTER HOOKUP:

When connecting the unit to a printer, you must first program
the desired baud rate, parity and strobe list with a computer.
After the unit is programmed it can be connected to the printer.
Connect the transmit line(s) of the unit to the receive line(s) of

RST

B C

A

ENTER LOCK PRE A PRE B VIEW PRGM

the printer and be sure that both devices have common
grounds. When the strobe line is triggered the unit will transmit
the selected strobe list which you had previously pro­grammed.

RST

B C

A

ENTER LOCK PRE A PRE B VIEW PRGM

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STROBE PIN (6)
+12V PIN (7)

(BOTTOM BOARD)

TRANSMIT PIN (2)

D E

GROUND PIN (5)

STROBE PIN (6)
+12V PIN (7)

(BOTTOM BOARD)

TRANSMIT A (+) PIN (2)

D E

TRANSMIT B (-) PIN (7)
GROUND PIN (5)

RS 422

TROUBLESHOOTING GUIDE

PROBLEM SOLUTIONSPOSSIBLE CAUSES

Power is applied to unit but the display
does not light.

Unit works, but occasionally the display
freezes or skips counts.

Input signal is connected but the unit
does not count or display rate.

Rate is displaying: r FFFFF.

1. AC or DC power wiring is incorrect.

1. Line noise is affecting the processor
due to a current spike or surge.

1. Input wiring is incorrect.

2. Scale factors are incorrect.

3. Transmitting device is defective.

4. Wrong debounce filtering selected.

1. The unit is trying to display a
number which it can't (too small or
too large).

2. Line noise affected unit on power
up.

1. Recheck power wiring

1. Use a different power supply or
install a surge suppressor.

1. Recheck input wiring.

2. Recheck scale factors and factor
calculations.

3. Replace transmitting device.

4. Recheck debounce filtering selection
"hi cps" or "lo cps".

5. To confirm set scale factors at one
and connect a wire to pin #7 and
touch it to pin # 5 (input A). Each
time pin #5 is touched counter A
should count once. If not, call
factory for RMA. (this test will not
work on units with quadrature input)

1. Check scaling factor, if it is correct,
lower the number of significant
figures.

2. Reprogram the unit and be sure to
enter a decimal (enter one and re
move it if a decimal is not desired).

Relays are not activating properly.

Counter resets before reaching 999999.

1. Wrong relay duration.

2. Relay set for wrong activation
i.e. count instead of rate.

1. Relay duration is set at a value other
than 00.0. This causes the counter
to auto-reset at the preset.

1. Recheck programmed relay duration.

2. Recheck programmed relay
activation mode.

1. If relay outputs are not being used,
set the relays for rate.

2. Set the relay durations to 00.0.

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