Unipulse F159 Operation Manual

F159

PLUG-IN WEIGHT MODULE
for the OMRON SYSMAC CJ1 SERIES PLC

OPERATION MANUAL

07 Nov. 2008

Rev. 1.02

Introduction

Backplane Free － Function Block － Program Standardization

The high speed F159 weighing controller is designed to provide efficient
production control functions in a wide variety of process weighing applications.
The F159 directly plugs into the state-of-the-art Omron CJ1 series PLC.

This direct connectivity shortens the system development time when
implementing a process weighing system by simplifying the setup of the
operation, reducing wi ring and inter faci ng cabl es, dras tical ly r educing the c ost of
systems' configuration and programming time for the systems integrator and
designers.

The slim F159 combines with the CJ1 to provide an excellent solution for

Introduction

process weighing systems. This combination aids in the downsizing of the
controlling installation site. Since the F159 possesses weighing information at a
rate of 500 times per second, this high data processing speed allows for
additional internal measurements, of smaller fluctuations of the weight, at a
higher resolution, which increases the productivity of the weighing system.

The applications for the F159 weigh module includes: Hopper scales, Packing
scales, Bag filling systems, Rotary filling systems and many other weight based
control systems. The F15 9 can exc ite up to f our (4) 350 ohm loa d cell s while s till
providing up to 1/40,000 division resolution.

The F159 stores all the weighing system set up values and the co mp let e feeding /
discharge / weighing control sequence internal to itself, significantly reducing
the burden imposed on the CJ1. This synergy between the PLC and weighing
instrumentation improves system speed and reduces system configuration times.

Functions already programmed into the F159 include: Auto free fall
compensation; Fast-Slow-Dribble filling, Final, High/Low, Tare, and Zero
Tracking functions. Powerful analog filters and selectable moving average
digital filters a re used to elimi nat e the mechanical vi br at ion t o a chi eve t h e hi gher
weighing accuracy.

Low development costs, quick system interfacing, high speed and accuracy, and
reduced PLC overhead, all combine to make the F159 weight controller a best
buy choice for your most demanding weight based process control applications.

Safety Precautions

Be sure to read for safety.

In order to have an F1 59 Weight Module used safely, notes I would like yo u to surel y follow

divide int o and , and are ind icated by the following documents.
Notes indicated here are the serious contents related to safety. Please use F159 after

understanding the contents well.

WARNING

CAUTION

WARNING

Misuse may cause the ris k of death or serious
injury to persons.

CAUTION

Misuse may cause t he risk of injury to persons
or damage to property.

Safety Precautions

WARNING

● Use F159 with correct supply voltage.

● Do not carry out the direct file of the commercial power supply to a signal input terminal.

● Carefully check wiring, etc. before applying power.

● Do not disassemble the main body for modifications or repair.

● Be sure to ground the protective ground terminal.

● When smoke, a nasty smell, or strange sound, please shut off a power supply

immediately and extract a power supply cable.

● Do not install in the following environments.

- Places containing corrosive gas or flammable gas.

- Where the product may be splashed with water, oil or chemicals.

Safety Precautions

Safety Precautions

CAUTION

● Be sure to disconnect the power cable when performing the following.

- Wiring/connection of cables to terminal blocks.

● Take an interval of more than 5 seconds when repeating ON/OFF.

● Use shielded cables for the connection of strain gauge type sensor or External output.

● Take adequate shielding measures when using at the following locations.

- Near a power line.

- Where a strong electric field or magnetic field is formed.

- Where static electricity, relay noise or the like is generated.

● Do not install in the following environments.

- Where the temperature and/or humidity exceeds the range in the specifications.

- Places with large quantities of salt or iron powder.

- Where the main body is directly affected by vibrati on or shoc k.

● Do not use it, broken down.

CONTENTS

1． APPEARANCE DESCRIPTION ...............................................1

1-1．Front Panel ............................................................................................ 1

1-2．Status LED ............................................................................................. 2

1-3．Unit Number Select Switch .................................................................. 3

1-4．DIP Switch ............................................................................................. 4

2．CONNECTION ........................................................................5

2-1．F159 Block Terminal ............................................................................. 5

CONTENTS

2-2．Load Cell Connection ........................................................................... 5

2-2-1 6-wire Connection .............................................................................. 6

2-2-2 4-wire Connection .............................................................................. 6

2-2-3 Connecting Load cells in Parallel ..................................................... 8

2-3．Output Connection ............................................................................. 12

2-3-1 Equivalent Circuit ............................................................................ 12

2-4．Connections to Terminal Block ......................................................... 13

3．DATA EXCHANGE WITH CPU ............................................14

3-1．High Performance I/O Unit Restart Flag ........................................... 15

3-2．Relay Area ........................................................................................... 16

3-2-1 Allocation of Weight and Status Data ............................................ 16

3-2-2 OUT (CPU unit → F159) ................................................................... 16

3-2-3 IN (F159 → CPU unit) ....................................................................... 19

3-2-4 Register Allocations for Weighing Control ................................... 28

3-2-5 Register Allocations for Initial Settings ......................................... 29

CONTENTS

4．CALIBRATION ......................................................................37

4-1．What is Calibration? ........................................................................... 37

4-2．Actual Load Calibration Procedure ................................................... 38

4-3．Preparation for Calibration ................................................................ 39

4-3-1 LOCK Release .................................................................................. 39

4-3-2 Setting Initial Data ............................................................................ 40

4-4．Zero Calibration .................................................................................. 44

4-5．Span Calibration ................................................................................. 47

5．DISPLAY SETTINGS ............................................................50

5-1．Digital Filter ......................................................................................... 50

5-2．Analog Filter ........................................................................................ 50

5-3．Digital Filter 2 ...................................................................................... 51

5-4．Motion Detection (MD) ........................................................................ 52

5-5．Zero Tracking (ZT) .............................................................................. 54

5-6．Digital Zero (DZ) .................................................................................. 55

5-7．Digital Zero Clear ................................................................................ 55

5-8．DZ Regulation ..................................................................................... 55

5-9．One-Touch Tare Subtraction ............................................................. 56

5-10．One-Touch Tare Subtraction Reset ................................................ 56

5-11．Digital Tare Subtraction ................................................................... 57

5-12．Restriction on Tare Subtraction ...................................................... 57

5-13．Sign Reversal during Discharge Control ........................................ 58

CONTENTS

6．WEIGHING MODE SETTING AND OPERATION ................59

6-1．Feed Weighing and Discharge Weighing ......................................... 60

6-1-1 Feed Weighing ................................................................................. 60

6-1-2 Discharge Weighing ........................................................................ 63

6-1-3 Weighing Mode ................................................................................ 66

6-2．Simple Comparison Control and Sequence Control ....................... 67

6-2-1 Simple Comparison Control ........................................................... 67

6-2-2 Sequence Control ............................................................................ 69

6-2-3 Mode Selection ................................................................................. 74

6-3．FF CPS. Regulation Value / Free Fall Compensation /

Avg. Count of FF CPS. / FF CPS. Coefficient ................................... 75

6-4．Final / Set Point 2 / Set Point 1 / FF CPS. / Over / Under ................. 78

6-5．Near Zero / Upper Limit / Lower Limit ............................................... 79

6-6．U/L Limit Comparison / U/L Limit Comparison Mode/

Near zero Comparison / Over/Under Comparison /

Over/Under Comparison Mode ......................................................... 80

6-7．Complete Signal Output Mode / Complete Output Time /

Compare Time / Comparison Inhibit Time ....................................... 82

6-8．Judging Times / AZ Times / At Start NZ Confirmation /

At Start WV Confirmation /Auto Jog (ON/OFF) / Auto Jog Timer .. 83

6-9．Net Weight Over / Gross Weight Over .............................................. 87

7．LADDER DIAGRAM .............................................................88

8．SETTING VALUES LIST .......................................................95

9．ERROR CODE ......................................................................97

9-1．Error Code and Error Assistance Code ............................................ 97

9-2．Error Description ................................................................................ 98

9-2-1 Calibration Error .............................................................................. 98

9-2-2 Weight Error ................................................................................... 102

9-2-3 Sequence Error .............................................................................. 104

10．BLOCK DIAGRAM ............................................................106

CONTENTS

11．DIMENSIONS ....................................................................107

12．INSTALLATION ................................................................108

12-1．Connection with CJ1 Unit .............................................................. 108

12-2．DIN Rail Installation ........................................................................ 110

13．SPECIFICATIONS ............................................................112

13-1．Analog Section ................................................................................ 112

13-2．Display ............................................................................................. 113

13-3．Setting .............................................................................................. 113

13-4．General Specifications ................................................................... 114

14．STATEMENT OF CONFORMATION TO EC DIRECTIVES 115

1. APPEARANCE DESCRIPTION

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-S

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RSV

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OUT1

OUT1

OUT2

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RSV

RSV

RSV

-SIG

+SIG

SHILD

Status LED

Terminal block

Unit number select switch

DIP switch.

The switch is located
beneath the terminal
block.

CAUTION

Terminal block can be detached by

pulling down the lever. Normally, the

lever should be in upper position.

Always turn off the CJ1’s voltage

source before trying to attach/detach

the terminal block.

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A

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1-1. Front Panel

1.APPEARANCE DESCRIPTION

1

1.APPEARANCE DESCRIPTION

1-2. Status LED

Status LEDs display the current operating status of the unit. The following table

summaries their names and meanings.

LED Name State Description

RUN

（Green）

ERC

（Red）

ERH

（Red）

WERR

（Red）

OUT1

（Orange）

OUT2

（Orange）

Operation status

Error detected
by the unit

CPU error

Weight e r r or

OUT1 output

OUT2 output

ON Normal operation

OFF Data exchange with CPU has been aborted

ON Error occurred in F159

OFF Normal operation

ON Error occurred during data exchange with CPU

OFF Normal operation

One or more of the following alarms are in

ON

place: ± LOAD, OFL1, OFL2, OFL3, ZALM

OFF Normal operation

ON OUT1 =ON

OFF OUT1 = OFF

ON OUT2 = ON

OFF OUT2 = OFF

2

1-3. Unit Number Select Switch

Switch

No.

Unit

No.

Channel number allocated

to the I/O unit relay area

DM number allocated

to the I/O unit DM area

0 0 2000 - 2009CH D20000 - 20099

1 1 2010 - 2019CH D20100 - 20199

2 2 2020 - 2029CH D20200 - 20299

3 3 2030 - 2039CH D20300 - 20399

4 4 2040 - 2049CH D20400 - 20499

5 5 2050 - 2059CH D20500 - 20599

6 6 2060 - 2069CH D20600 - 20699

7 7 2070 - 2079CH D20700 - 20799

8 8 2080 - 2089CH D20800 - 20899

9 9 2090 - 2099CH D20900 - 20999

10 10 2100 - 2109CH D21000 - 21099

ｎｎ

2000 ＋ n × 10 - 2000 ＋ n × 10 ＋ 9CH D20000 ＋ n × 100 - D20000 ＋ n × 100 ＋ 99

95 95 2950 - 2959CH D29500 - 29599

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F159 acts as a high performance weighing processing module for Omron SYS-

MAC CJ1 series PLC. The data exchange between CPU unit and F159 are

carried out by the high performance relay area of I/O and DM area.

Relay and DM number used by F159 can be selected by the unit number

selection switch located on the front panel.

1.APPEARANCE DESCRIPTION

Unit number must be unique: duplicate use of the same number for multiple of

I/O units will cause operation error “Error: Duplicate use of unit No.”

(“Duplicate use of unit No.” in programming console), disabling normal

operation (A40113 turns ON).

3

1.APPEARANCE DESCRIPTION

NO

1234

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DIP switch

CAUTION

Terminal block can be detached by

pulling down the lever. Normally, the

lever should be in upper position.

Always turn off the CJ1’s voltage

source before trying to attach/detach

the terminal block.

B

1

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1-4. DIP Switch

DIP switch is used to LOCK calibration and restore default settings.

Switch No. State

ON OFF

1 Calibration LOCK ON Calibration LOCK OFF

2 Default set ON Default set OFF

3 Undefined Undefined

4 Undefined Undefined

When switch 2 is set to ON position, F159 initializes set value whenever F159 is

powered on.

Switch 3 and 4 are undefined: they should always be set to OFF position. When

they are set to ON position, F159 can’t operate normally.

4

2. CONNECTION

+EXC B1

+S B2

-EXC B3

-S B4

RSV B5

RSV B6

RSV B7

OUT1 B8

OUT1 B9

A1 SHIELD

A2 +SIG

A3 -SIG

A4 RSV

A5 RSV

A6 RSV

A7 RSV

A8 OUT2

A9 OUT2

2-1. F159 Block Terminal

2.CONNECTION

2-2. Load Cell Connection

Connect leads from the load cell to F159 terminal block.

F159 6-wire connection 4-wire connection

+EXC +EXC +EXC

+S +S connected to +EXC

-EXC -EXC -EXC

-S -S connected to -EXC

+SIG +SIG +SIG

-SIG -SIG -SIG

SHIELD SHIELD SHIELD

Load cell signal

5

2.CONNECTION

＋ IN

－ OUT

－ IN

Load cell

＋ EXC
＋ S
－ S

－ EXC

＋ SIG

－ SIG

FG

＋ OUT

Red

Yellow

Orange

Black

Green

White

B1

B2

B4

B3

A2

A3

A1

Color coding used
in UNIPULSE supplied 6-core cable

＋ IN

－ OUT

－ IN

Load cell

＋ EXC
＋ S
－ S

－ EXC

＋ SIG

－ SIG

FG

＋ OUT

Red

Black

Green

White

B1

B2

B4

B3

A2

A3

A1

Color coding used

Short these terminals

in UNIPULSE supplied 4-core cable

2-2-1. 6-wire Connection

F159 input uses an accurate 6-wire load cell connection (remote sense method).

Use shielded 6-core cable for this connection and route it apart from noisy lines

(power and digital devices) and AC power lines.

※ Remote sense method can apply correct voltage to the load cell compensating

cable resistance change due to temperature variation along the cable. It is

capable of stabilizing excitation voltage in the vicinity of the load cell.

2-2-2. 4-wire Connection

F159 is also capable of 4-wire connection, in which case additional jumper

connections between B1 and B2, and B3 and B4 are required. Although the

system may function apparently correctly with B2 and B4 open, this

configuration can produce over-voltage excitation, resulting in over heating and

damage of the load cell. Connect these terminals using the supplied short-bars.

6

2.CONNECTION

CAUTION

・ F159 supplies 10V excitation voltage. Use a load cell with rated excitation voltage of 10V

or higher, otherwise abnormal heating and damage to the cell may result.

・If you use F159 using 4-wire connection configuration, never fail to connect between

+EXC and +S, and –EXC and –S. Although the system may function apparently well

without these jumpers, over-voltage excitation can occur any time resulting in anomalous

heating and damage to the load cell.

7

2.CONNECTION

R

R

R

R

R

R

+EXC

-SIG

+SIG

-EXC

+EXC

-SIG

-EXC

+SIG

F・G

+S

-S

Seen from F159, the parallel

connection of n load cells is

considered to be a single load cell

with a capacity multiplied by n and

the same sensitivity with the

constituent load cells.

The averaging resistor (R) takes the

value between 300 and 500Ω, with

the same relative ratio and low

temperature coefficients. They are

not required if the load cell is

specifically designed for parallel

connection application.

If you connect multiple of load cells in parallel, use load cells with extra capacity margin.

Biased loading or mechanical shock may result in overload in some of the cells.

R

R

Request

CAUTION

Parallel connection of multiple of

load cells can drastically change

power consumption.

Power supply with sufficient

capacity should be selected. See

next page for proper evaluation of

power requirement.

2-2-3. Connecting Load cells in Parallel

Some industrial applications require multiple of load cells connected in parallel

to configure, for example, a hopper scales or track scale. A typical parallel

connection is shown below.

Parallel connection can easily realized using the 4-point multi load cell summing

box (e.g. B41X series provided by UNIPULSE).

8

2-2-3-1. Power consumption evaluations for parallel connection

For details on the power requirement of CJ series units, see “OMRON

CJ Series: CJ1/CJ1-H/CJ1M CPU Unit User’s Manual (Setup)”

provided by OMRON.

Request

Power consumed by a F159 can vary depending on the number of load cells

connected in parallel. For an each additional 350Ω load cell, power requirement

will increase by approx.0.13 A.

2.CONNECTION

Number of 350Ω load cells

connected in parallel

10.30

20.43

30.56

40.69

Power

consumption [A]

The system must be so designed that it can provide enough power to drive the

whole system including F159 and CJ series units (CPU and I/O units). Select a

power unit with ample capacity.

Depending on the specification of CJ series device used, up to ten units can be

connected to a F159.

(Some CPU units allow expanded installation up to 40 units)

9

2.CONNECTION

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Power unit

PA2 02

CPU unit

CJ1M-CPU11

Input unit

CJ1W-ID211

Output unit

CJ1W-OD211

F159 End coverF159 F159

Single load cell connection

0.58[A] 0.08[A] 0.10[A] 0.30[A] 0.30[A] 0.30[A]Power consumption　→

Source capacity

5[V] 2.8[A]

<Connection of single 350Ω load cell>

10

Unit type Unit name Qty Power consumption (A)

CPU unit CJ1M-CPU11 1 0.58A

Input unit CJ1W-ID211 1 0.08A

Output unit CJ1W-OD211 1 0.10A

Weight Module

F159 3 0.90A

Calculation

0.58 ＋ 0.08 ＋ 0.10 ＋ 0.90

Consumption（A）

Result

1.66A（≦ 2.8A）

<Connection of three 350Ω load cells in parallel>

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Power unit

PA205R

CPU unit

CJ1M-CPU11

Input unit

CJ1W-ID211

Output unit

CJ1W-OD211

F159 End coverF159 F159

Three load cells are connected in parallel

0.58[A] 0.08[A] 0.10[A] 0.56[A] 0.56[A] 0.56[A]Power consumption　→

Source capacity

5[V] 5[A]

2.CONNECTION

Unit type Unit name Qty Power consumption (A)

CPU unit CJ1M-CPU11 1 0.58A

Input unit CJ1W-ID211 1 0.08A

Output unit CJ1W-OD211 1 0.10A

Weight Module

Consumption（A）

F159 3 1.68A

Calculation

0.58 ＋ 0.08 ＋ 0.10 ＋ 1.68

Result

2.44A（≦ 5A）

11

2.CONNECTION

Spark arrester

Load

Spark arrester

DC source

Var ist or

Load

AC source

Relay

Vext

F159

Inside

Vcc

Vceo=30V（max）
Ic =120mA （max）

・User must provide an external power unit (Vext <= 30

VDC) to drive the output relay.

・Do not short circuit the load (such as a relay coil). This

may damage the output relay.

・Use surge absorbing devices appropriately in the relay

circuit (see the diagram above) to suppress surge

voltage from occurring. These devices are effective to

reduce noise-related problems and to extend the relay

life.

Output data

MOS FET relay

0

OFF

1

ON

2-3. Output Connection

2-3-1. Equivalent Circuit

F159 uses non-polar MOS FET relays for signal output.

12

2-4. Connections to Terminal Block

<= 6mm <= 6mm

Pressure terminal

M3 screw

Input and output signal lines should be routed separately from noisy power

lines and AC lines.

Request

CAUTION

・ A4 to A7 and B5 to B7 are unnecessary in this specification, please do not connect input

and output signal lines to them.

Do not apply the voltage from the outside, or do not short-circuit with parts.

It may cause malfunction of F159 and external equipment.

Use pressure terminals to connect cables to the terminal. Tighten the pressure

terminal securely to the terminal block using a M3 screw. Correct tightening

torque is 0.5Nm.

The width of the pressure terminal should be 6mm or less (see the figure below).

2.CONNECTION

13

3.DATA EXCHANGE WITH CPU

3. DATA EXCHANGE WITH CPU

The F159 exchanges data with CPU using the following devices: High

performance I/O unit relay area (Weight and Status data) and high performance

I/O unit DM area (weighing setting and initial setting data).

Weight data

Analog signal from the load cell is converted into digital Weight data.

Weight data is allocated to one of the relay area of the CPU units’ high

performance I/O unit based upon the unit number. The data is exchanged

regularly every time I/O refresh takes place.

Status data

Status data includes various status and error information.

Status data is allocated to one of the relay areas of the high performance I/O unit

in the CPU unit based on the unit number. The data is exchanged regularly every

time I/O refresh takes place.

Weighing setting data

Settings for performing Weight measurement.

One F159 is allocated, based on its unit number, to a selected DM area for high

performance I/O unit (inside CPU unit). Data is written to the DM area in

synchronization with: power-on, refresh start, and request bit (On-edge). Data is

also read out using the request bit’s On-edge: the bit can be used both for reading

and writing depending on R/W bit status.

Initial setting data

Parameter settings for using F159 as a

Weight Module

.

14

A set of initial setting data for each F159 is allocated, based on its unit number,

to a DM area for high performance I/O unit (inside CPU unit), and is written to

this area when the unit is powered on, or a refresh cycle is started.

3.DATA EXCHANGE WITH CPU

CJ series CPU unit F159

Weight data

Status data

2000 ＋ n × 10

2000 ＋ n × 10 ＋ 9

【High performance I/O unit relay area】

10CH

Weighing

Initial setting data

D20000 ＋ n × 100

D20000 ＋ n × 100 ＋ 99

【Data memory (DM) area】

100CH

n: unit number

Weight value,

Weighing

Initial setting data

【Weight data, status data】

【Weighing setting data, initial setting data】

I/O refresh

Power-on/unit restart/arrival

Power-on/unit restart

Arrival of request bit's

setting data

of request bit's On-edge

On edge

status info,…

setting data

3-1. High Performance I/O Unit Restart Flag

When the user restart the unit after he has modified data memory or removed the

cause of failure, the user have to either power up the CJ1 main unit again, or

changing the high performance I/O unit restart flag in the following sequence:

OFF → ON → OFF.

High performance I/O unit restart flag

Relay

number

A50200 0th unit restart flag

A50201 1th unit restart flag

A50215 15th unit restart flag

A50300 16th unit restart flag

A50715 95th unit restart flag

Function

Restart each unit by switching
OFF → ON → OFF

15

3.DATA EXCHANGE WITH CPU

3-2. Relay Area

3-2-1. Allocation of Weight and Status Data

　　　　 OUT (CPU unit → F159)

1514131211109876543210

n CH

n+1 CH

Soft

LOCK

R/W

　 IN （F159 → CPU unit）

1514131211109876543210

n+2 CH

n+3 CH Over Go Under

n+4 CH

n+5 CH

n+6 CH

n+7 CH

n+8 CH

n+9 CH R/W

Gross weight 10

8421842184218421

Net weight 10

8421842184218421

Tar e

Feed/

subtraction

Discharge

in progress

Normally

ON

Calibration

EXC

error

ALM

3

3

HOLD

in progressZTin progress

ERRONCyclic

Zero
error

Soft

LOCK

SEQ

SEQ

Judge

START

STOP

Request

Gross weight 10

Com-

SP3 SP2 SP1

plete

Net weight 10

SEQ

START

Upper

limit

Judge

CZ Stable

bit

OFL3 OFL2 OFL1 +LOAD -LOAD

SEQ

STOP

Request

FF

CPS.

2

Decimal place

Near

zero

2

Lower

limit

CPS.

21 8421

Decimal place

21 8421

Error assistance code Error code

84218421

FF

Digital

Feed/

Discharge

Gross weight 10

Discharge

tare

subtraction

Gross

weight

sign

Net weight 10

Net

weight

sign

Span

NOV

calibration

RAM

in progress

Digital

Feed/

tare

subtraction

1

1

HOLD

Zero

calibration
in progress

HOLD

DZ

OFFDZON

4321

DZ

OFFDZON

TAR E

OFF

Span

calibration

Gross weight 10

Gross weight 10

Net weight 10

Net weight 10

DIP SW

TAR E

OFF

Span

calibration

0

4

0

4

TAR E

ON

Zero

calibration

TAR E

ON

Zero

calibration

n = 2000 + (unit number × 10)

3-2-2. OUT (CPU unit → F159)

TARE ON

ON edge (0 → 1) triggers tare subtraction, nulling the Net weight. Note, however,

the user can place some restrictions on tare subtraction (see 5-12. "Restriction on

Tare Subtraction"), in which case this function can be activated only when the

reading is “Stable”.

The range of tare subtraction is selectable from: whole range, or 0 <= Tare <

Capacity.

“Tare subtraction in progress” bit (14th bit of n+5 CH ) becomes 1 while this

process is underway.

※ Tare subtraction is reset when turning off power.

16

3.DATA EXCHANGE WITH CPU

TARE OFF

ON edge (0 → 1) disables tare subtraction function. Set value for tare subtraction

remains intact.

DZ ON

ON edge (0 → 1) triggers Digital Zeroing (Gross weight is zero cleared).

Allowable range of digital zeroing is within the range set by DZ regulation

value. “Zero Error” occurs if the reading is out of this range.

※ Digital Zero is reset when turning off power.

DZ OFF

ON edge (0 → 1) disables Digital Zero function. “Zero Error” message will also

be cleared.

HOLD

While this bit is on “1”, Weight value and Comparison Value remain unchanged

(hold).

HOLD bit (13th bit of n+5 CH) remains high while HOLD is activated.

Digital tare subtraction

If “relay” is selected for tare subtraction trigger, this bit determines ON/OFF of

Digital tare subtraction function.

1: Digital tare subtraction is ON

0: Digital tare subtraction is OFF

Feed / Discharge

If “relay” is selected in Weighing mode setting, this bit determines ON/OFF of

Feed/Discharge switching.

1: Discharge control

0: Feed control

FF CPS.

If “relay” is selected in FF CPS. setting, this bit determines ON/OFF of FF CPS..

1: FF CPS. ON

0: FF CPS. OFF

17

3.DATA EXCHANGE WITH CPU

Judge

This bit is used for two purposes:

If Over/Under decision is to be triggered by Judge input, this signal triggers Over/

Under judgment.

If Upper/Lower limit decision is to be triggered by Judge input, this signal triggers

Upper/Lower limit judgment.

1: Judgment ON

0: Judgment OFF

SEQ START

If Sequence mode is selected in Mode selection, ON edge (0 → 1) in this signal

starts a new sequence.

SEQ STOP

While sequence control is underway, ON edge (0 → 1) in this signal will abort the

control sequence resulting in “Sequence error 2” (Error assistance code =3, Error

code =2).

While the system is in the state of sequence error (Error assistance code =3), ON

edge (0 → 1) in this signal resets the sequence error.

Soft LOCK

Soft LOCK enables/disables setting modification for Zero calibration and Span

calibration. If Soft LOCK is set to “1”, any attempt to change current settings for

Zero/Span calibration is inhibited.

Therefore, user must set this bit to “0” before trying to alter calibration settings.

Zero calibration

ON edge (0→1) in this signal initiates Zero calibration. Note, however, this input

18

is ignored when “Soft LOCK” is set to “1”, “LOCK SW”(DIP switch) is ON, or

a preceding calibration process is still underway.

3.DATA EXCHANGE WITH CPU

Span calibration

ON edge (0 → 1) in this signal initiates Span calibration. Note, however, this

input is ignored when “Soft LOCK” is set to “1”, “LOCK SW”(DIP switch) is

ON, or a preceding calibration process is still underway.

Request

ON edge (0 → 1) in this signal triggers F159 to exchange the set of weighing

settings (m – m+19 CH in DM area) with CPU unit. Direction of data transfer

(CPU → F159, or F159 → CPU) is determined by R/W bit.

R/W

The state of this line (1/0) at the time of REQUEST trigger (0 → 1) determines

the direction of data transfer between F159 and CPU.

1: Write (CPU unit → F159)

0： Read （F159 → CPU unit）

3-2-3. IN (F159 → CPU unit)

Gross weight 100 - 10

Indicates Gross weight.

Gross weight sign

“1” when Gross weight becomes negative

Decimal place

Indicates the position of decimal point.

4

2 1 Decimal place

OFF OFF 0

OFF ON 0.0

ON OFF 0.00

ON ON 0.000

19

3.DATA EXCHANGE WITH CPU

Near zero

“1” when Weight <= Near zero setting.

　　　Weight : Weight value Near zero

SP1, SP2, SP3

Simple comparison mode

SP1: “1” if Weight >= Final setting – Set point 1 setting

SP2: “1” if Weight >= Final setting – Set point 2 setting

SP3: “1” if Weight >= Final setting – FF CPS.setting

Sequence mode

Each bit is initialized to “1” when weighing sequence is started by SEQ Start’s

ON edge.

SP1: “0” if Weight >= Final setting – Set point 1 setting

SP2: “0” if Weight >= Final setting – Set point 2 setting

SP3: “0” if Weight >= Final setting – FF CPS.setting

　　　　　Weight: Weight for Over/Under comparison

20

3.DATA EXCHANGE WITH CPU

・ After an Complete signal output, Weight value must fall below

the 25% level of Final setting. Otherwise, Complete for next

run cannot change to “1”.

・ If the value for Final is set to “0”, Complete may

spontaneously change to “1” when the F159 is powered.

Complete

Simple comparison mode

Timing of Complete bit output is determined by the selection made in Weighing

function 2 (Complete signal output mode). Time duration for which this signal is

held “1” depends on the setting in complete signal output.

Sequence mode

Over/Under judgment enabled:

Criteria: Other than “Comparison OFF”, and non-zero Judging times have been

selected for Over/Under comparison.

Timing of Complete bit output is determined by the selection made in

Weighing function 2 (Complete signal output mode). Time duration for

which this signal is held “1” depends on the setting in complete signal

output.

Over/Under judgment disabled:

Criteria: Judging times is set to “0” (Over/Under judgment OFF)

Complete bit becomes “1” if SP3 goes low (OFF edge, 1 → 0) ignoring the

setting in the complete signal output mode (Weighing function 2).

Time duration for which this signal is held “1” depends on the setting in

complete signal output.

21