btsr SMART 200 MTC User manual

SMART 200 MTC & IS3W/MTC
METER CONTROL SYSTEM
Operating Manual
Rev. 2.0 – September 2003 ENGLISH

SMART 200 MTC & IS3W/MTC – Rev. 2.0 – September 2003
Copyright 2003 - BTSR – All rights reserved.
This manual is intended for the users of the SMART 200 MTC system. It is suggested to carefully read in
this manual before connecting and using the system.
BTSR reserves the right to change at any time the contents of this manual, without notice.
For any technical or commercial problem, please contact your local BTSR dealer or call directly BTSR
customer service center. We will be glad to meet your needs.
Thank you for your trust and good job.
The product described herein is compliant with the requirements of 89/336/EEC EMC Directive and
73/23/EEC Low Voltage Directive.
All BTSR products are covered by patents and adopt exclusive, profitable and high tech. solutions.
BTSR® is a registered trademark “Best Technology Study & Research” of BTSR International S.p.A.
Lycra® is a trademark by DuPont

Table of Contents
SMART 200 MTC - i -
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
INTRODU
INTRODUINTRODU
INTRODUCTION
CTIONCTION
CTION
How to Use This Manual ........................................................................................................................................... I.1
Symbols used .............................................................................................................................................................. I.1
Chapter
ChapterChapter
Chapter 1
11
1 -
--
- OVERVIEW
OVERVIEWOVERVIEW
OVERVIEW
System Components ...................................................................................................................................................1.1
System’s Operating Principles ..................................................................................................................................1.1
Special Features of IS3W/MTC Devices...................................................................................................................1.2
General Features of SMART BTSR Systems ..........................................................................................................1.2
Ch
ChCh
Chapter
apterapter
apter 2
22
2 –
––
– TECHNICAL DATA AND INSTALLATION
TECHNICAL DATA AND INSTALLATIONTECHNICAL DATA AND INSTALLATION
TECHNICAL DATA AND INSTALLATION
Technical Features .....................................................................................................................................................2.1
Installation ..................................................................................................................................................................2.1
Interface Connectors on SMART 200 MTC ........................................................................................................2.2
Connection Example for Generic Applications....................................................................................................2.3
Connecting Cables and Power Supply Devices....................................................................................................2.4
Installation of the IS3W/MTC Sensors ................................................................................................................2.5
Chapter
ChapterChapter
Chapter 3
33
3 –
––
– OPERATION
OPERATIONOPERATION
OPERATION
SMART 200 MTC Terminal Features .....................................................................................................................3.1
IS3W/MTC Sensor Features .....................................................................................................................................3.4
Function of the IS3W/MTC Sensors.........................................................................................................................3.4
Interface Characteristics ...........................................................................................................................................3.5
Interpretation of the signaling lights located on the sensors ..................................................................................3.7
Programmable Parameters .......................................................................................................................................3.8
Parameters related to the Textile Machine Characteristics ..................................................................................3.8
Parameter that effect the sensor’s detection and signaling characteristics ...........................................................3.8
Parameters related to the SMART 200 MTC system operation...........................................................................3.8
Parameters related to the article being processed.................................................................................................3.9
Parameter related to the article being processed, that effect the sensor’s detection characteristics .....................3.9
Preliminary operations for using the SMART 200 MTC terminal......................................................................3.10
Operating Sequences................................................................................................................................................3.11
Enabling the SETUP Menu Functions ...................................................................................................................3.12
Enabling the SETUP Menu Functions (NEW, MODIFY, ERASE).....................................................................3.13
Enabling the WORK Menu Functions ...................................................................................................................3.13
Enabling the GRAPH Menu Functions..................................................................................................................3.14
CONTROL Function ...............................................................................................................................................3.15
DEVICE Parameters setting for Initial installation..............................................................................3.16
SIDE Machine Sides Definition ........................................................................................................3.18
LDRUM Drum Length Setup .................................................................................................................3.19
KANTIP Measurement Error Correction Percentage .........................................................................3.21
BK- On/Off Yarn Control Mode On/Off ....................................................................................................3.23

Table of Contents
- ii - SMART 200 MTC
RES - M/A Setting the Type of Counter Reset .........................................................................................3.24
STP-C/P STOP Signal Type in Case of Fault........................................................................................3.25
STG-CT Setting the type of STOP Signal for Target Reached ...........................................................3.26
ST-NCO Configuring the level of STOP signal as Normally Closed or Normally Open ..................3.27
STE-On/Off Enabling/Disabling the STOP Signal for Temporary Count Suspension ...........................3.28
KEY-ST Password to access CONFIG (SETUP) menu .......................................................................3.29
KEY-WK Password to access WORK menu ..........................................................................................3.30
CLOCK Reading/Setting the Printer Clock Calendar (rtc) ...............................................................3.31
SENSOR TEST Sensors Test..............................................................................................................................3.35
COM TEST Testing the Efficiency Rate over the Communications Line between
the SMART 200 MTC Terminal and Sensors.......................................................................3.36
VERS – UPG Test of software version and Sensor’s version Updating .....................................................3.37
NEW Creating a New Article............................................................................................................3.39
TARGET Target setting ...........................................................................................................................3.41
K_% Correction factor related to the article ..................................................................................3.42
K_MET Correction in case of automatic machine ..............................................................................3.43
DCOUNT Masking time after every individual count............................................................................3.44
DSTART Minimum Image Variation Frequency..................................................................................3.45
DSTOP Sensor Reaction Time..............................................................................................................3.46
SENS Sensor Sensitivity.....................................................................................................................3.47
MODIFY Modifying an existing Article .................................................................................................3.48
ERASE Erasing an existing Article......................................................................................................3.48
SCAN Displaying Articles currently loaded in the sensors..............................................................3.49
LOAD Loading an article to sensor memory.....................................................................................3.50
UNLOAD Unloading articles from the sensor memory .........................................................................3.51
BAR GRAPH Graphic visualization of the Tension Detected by each IS3W.. device ...............................3.52
ISTOG GRAPH Graphic visualization (comparison) of count progress status
among multiple IS3W.. sensors ..............................................................................................3.53
PRINT REPORT Production Report Printing ...............................................................................................3.54
Production Report Example.......................................................................................................3.55
Chapter
ChapterChapter
Chapter 4
44
4 –
––
– TROUBLESHOOTING AND MAINTENANCE
TROUBLESHOOTING AND MAINTENANCETROUBLESHOOTING AND MAINTENANCE
TROUBLESHOOTING AND MAINTENANCE
Troubleshooting..........................................................................................................................................................4.1
Ordinary Maintenance ..............................................................................................................................................4.2
Repairs ........................................................................................................................................................................4.2
Preliminary Instructions for the Correct Use of IS3W Sensors.............................................................................4.3
LDRUM Setup Procedure .........................................................................................................................................4.3
LDRUM Calculation Example..................................................................................................................................4.4
Updating the Software Version on SMART Terminals ..........................................................................................4.5
Product Summary Tables..........................................................................................................................................4.6
Appendi
AppendiAppendi
Appendix
xx
x A
AA
A -
--
- QUICK REFERENCE
QUICK REFERENCEQUICK REFERENCE
QUICK REFERENCE ................................
................................................................
................................................................
................................................................
................................................
................................
................ A.1
A.1A.1
A.1

Introduction
SMART 200 MTC - I.1 -
INTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
Congratulations for choosing a BTSR product.
With our SMART 200 MTC yarn measurement and control system, you got an
innovative, unique solution, allowing you to obtain an accurate measurement of
yarn meters wound on doubling machines, winding machines, etc. This system also
offers the possibility to control the yarn breakage/missing conditions
(“BK on/off function”).
The measurement and failure detection task is performed by BTSR IS3W/MTC
Sensors.
How to Use This Manual
This Operation Manual is divided into 4 Chapters and 1 Appendix.
Chapter 1 – Overview describes the main features, components and the principle of
system operation.
Chapter 2 – Technical Data and Installation gives the necessary instructions to
correctly install the system.
Chapter 3 – Operation gives a detailed description of the operations needed to
setup and program the system according to the application needs.
Chapter 4 – Troubleshooting and Maintenance provides a quick guide to solving
the main technical faults of the system.
Appendix A – Quick reference summarizes the sequence of operations that staff
who have had sufficient experience in handling the system, have to carry out in
order to setup and program the system.
Symbols used
Highlights notes, warnings and points to which the attention of the reader
should be directed.
Indicates a particularly sensitive situation which could have an effect
on the safety or proper operation of the system.
IS3W.. The sensors used by SMART 200 MTC system are IS3W/MTC sensors.
Within this manual they will be simply called IS3W..
While scrolling through features that can be activated from the SETUP,
WORK, CONTROL and NEW menus, this symbol indicates the procedure
that describes the specific feature. The same symbol is shown at the
beginning of the page, which describes in details the function itself.
Within the operating procedures section, this symbol indicates that, to
activate the desired function you must press and hold down for 3 seconds
the button.

Introduction
- I.2 - SMART 200 MTC
Within the Appendix A “Quick Reference” the push-buttons of SMART control
panel are shown as follows:
Meaning of the Capital/Small Letters on Display
Within the functions that provide two programmable alternative options, i.e.:
Normally Open or Normally Closed Contact
Enabled/Disabled Condition ( on/off )
Pulse/Continuous Signaling, etc.
The letters shown on display as CAPITAL letters indicate the currently active
choice, while the small letters refer to the possible alternative choice.
Example:
Item Function Current Programming
RES-Ma Ma= reset-Manual
RES-mA
Counter reset mode: Automatic (mA)
or Manual (Ma) mA= reset Auto
STP-Cp Cp = continuous signal
STP-cP
STOP output programmable as
continuous signal (CONT), pulse
signal 2 seconds (P2s) or pulse
signal 10 seconds (P10s)
cP = pulse signal
ST-NCo NCo = normally closed
ST-NcO
Stop Output programmable as
Normally Closed (NC) or Normally
Open (NO) contact NcO = normally open
Alternative items:
Within the description of configuration/programming procedures the alternative
screen shots are shown with this bracket symbol.

Overview
SMART 200 MTC - 1.1 -
1
11
1 -
--
- OVERVIEW
OVERVIEWOVERVIEW
OVERVIEW
System Components
The SMART 200 MTC system consists of a control/programming terminal and a
variable number of IS3W.. sensors (up to 200) connected to the terminal using
specific interface cables and installed near the stroke point, typically in front of the
drum, as shown on the example of page 2.3.
System’s Operating Principles
The IS3W/MTC (Image Smart Scanning System – MeTer Counter) sensors allow
you to perform an accurate measurement of the yarn meters wound on the various
positions of the textile machine.
The yarn, passing through the sloping grooves of the drum, enters and exits with
regular frequency ( stroke ) into the sensor’s detection zone, determining the
increment of a counter for each stroke. Besides the “meter counter” function, the
sensor is capable of signaling the following conditions through a STOP output:
-reaching the number of set meters (target)
-yarn steady/broken (missing strokes)
The fault control ( yarn steady/broken ) function can be either enabled or disabled
according to the user needs.
The SMART 200 MTC Terminal converts the number of strokes counted by each
counter into a number of wound yarn meters, by means of appropriate
programmable parameters, that can be adjusted through specific correction factors,
taking into account both: the physical characteristic of the machine (drum
development, bobbin slipping, etc..) and the characteristics of the article to be
processed.
The measurement, adjustment and control parameters can be programmed with
utmost simplicity on the SMART 200 MTC Terminal and can be associated with a
given article and saved to a database inside the terminal itself.
Depending on the article to be processed, the operator will then transfer all the
parameters associated with the article itself into the memory of each individual
sensor, through a simple command from SMART Terminal.
In addiction to the possibility of programming, displaying and transferring all
parameters that affect the operation and performance of sensors within the system,
the SMART 200 MTC Terminal allows the operator to carry out the following
functions:
-To display in real-time and in graphical mode the value reached by the
counters indicating the number of meters wound for each machine position
controlled by an IS3W/MTC sensor.
-To display the “Target reached” condition, for each machine position
-To display the failure counter (number of yarn breakage conditions),
detected by each sensor during the system operation, as well as the counter
indicating the number of Target conditions reached for each sensor
-To manually clear the counters
Furthermore, the possibility to print a report containing the summary of failures
detected by the sensors (Production Report) offers a valuable support for keeping
and improving the quality level of production.

Overview
- 1.2 - SMART 200 MTC
Special Features of IS3W/MTC Devices
Compared with the traditional count methods, typically based upon measurement
wheels, the IS3W/MTC devices offer a number of unique advantages and
performance characteristics:
Absolute flexibility, as they are not related to the mechanical characteristics of
the textile machine on which they are installed (shape and size of drum or
cylinder, etc.) or to the bobbin type (cylindrical, truncated conical, etc.). This
allows you to install the IS3W.. devices not only on new machines, but also on
already installed and running machines.
High availability and count accuracy, thanks to the possibility to enter
suitable correction parameters to compensate possible slippage problems or
other predictable error causes (related to the machine or to the article).
No physical contact with the yarn (non invasive solution), i.e. no influence on
tension characteristics of yarns fed to the machine.
General Features of SMART BTSR Systems
Usage of IS3W.. electronic sensors (Image Smart Scanning Sensor) (BTSR
Patents)
The IS3W.. sensors can be connected to the SMART 200 MTC terminal using
specific single-connector cables.
Automatic Numbering (BTSR Patents)
The identification of sensors is performed by the system by means of a quick
automatic numbering procedure.
Multisensor System
The system allows you to connect up to 200 IS3W.. yarn measurement and
quality control sensors.
Easy Monitoring
Besides the data shown on SMART 200 MTC graphic display, each IS3W..
sensor indicates, by means of a blinking red LED, the anomalous conditions.
Sensor Diagnostic
Each IS3W sensor signals the operational status by means of two LEDs.
Report Printing
At any time the operator can print the Summary Production Report, allowing
him to keep under control the quality level of production process.
Checking and Updating the Sensor’s Firmware
The possibility to check and update, if necessary, the firmware version of
sensors from SMART Terminal, allows you to exploit possible future
improvements and new features, without having to replace the sensors.

Technical Data and Installation
SMART 200 MTC - 2.1 -
2
22
2 –
––
– TECHNICAL DATA AND INSTALLATION
TECHNICAL DATA AND INSTALLATIONTECHNICAL DATA AND INSTALLATION
TECHNICAL DATA AND INSTALLATION
Technical Features
SMART 200 MTC Terminal
Power supply voltage 24 Vdc ± 10%
Maximum Absorption 100 mA
Dimensions 135 x 95 x 40 mm
Temperature range 0° - 60 °C
LCD Graphical Display 80 x 40 mm
Integrated Touchpad 5 membrane buttons with integrated red LED
Protection 2 fuses 5 x 20 – 1A
IS3W.. Sensors
Power supply voltage 12 .. 24 Vdc ± 20%
Absorption 15 mA (max 50 mA)
STOP output NPN open collector
STOP output logic Programmable (NO – NC)
Programmable as continuous or pulse signal
either 2 or 10 sec. (Failure)
Programmable as continuous or square signal
(4Hz) (Target)
STOP output protection Protection against short-circuits
Maximum Current of STOP output 200 mA continuous; 500 mA peak
Vol STOP output 1.2 V with collector current = 500 mA
Signalling With integrated LEDs (red and green)
Dimensions 25 x 15 x 36.5
Temperature range 0° - 60°C (operation)
-25° ÷ +85°C (storage)
Installation
The installation of the SMART 200 MTC system depends on the type of application
to which it is destined and on the number of sensors to be connected. When the
number of sensors is limited, it is possible to connect them directly to the SMART
terminal, otherwise it is necessary to use a stabilized power supply PSU 10A. This is
capable of supplying up to 8 independent backbone lines to which it is possible to
connect the same amount of sensor chains (up to a maximum of 100). The number of
sensors can be extended to 200, using two PSU10A power supplies.

Technical Data and Installation
- 2.2 - SMART 200 MTC
Interface Connectors on SMART 200 MTC
Concerning all electrical systems, it is a recommended rule to ensure that the ground
cable (GND) is connected to the sensor support.

Technical Data and Installation
SMART 200 MTC - 2.3 -
Connection Example for Generic Applications
Concerning all electrical systems, it is a recommended rule to ensure that the ground cable
(GND) is connected to the sensor support.

Technical Data and Installation
- 2.4 - SMART 200 MTC
Connecting Cables and Power Supply Devices
To correctly install the SMART 200 MTC system and sensors, it is necessary to
use a certain number of connecting cables provided by BTSR; their length and
type depend on the specific requirements and application types.
The following table lists at glance the types and lengths of the main connecting
cables, which BTSR may provide. For further details and queries about the cables
and options available, please contact your local dealer.
SMART Power Cables (I/O Connector)
FE10/200 Length 200 cm
FE10/500 Length 500 cm
Cables 4 x 0.35 mm with Female to Female Connector for connections
between SMART 200 MTC /PSU 10A and Doubler cable MA2FE3
FE100/FEC Length 100 cm
FE200/FEC Length 200 cm
FE300/FEC Length 300 cm
FE400/FEC Length 400 cm
Doubler Cable from one Male to two Female with Independent Stop
and Ground outputs to Connect a Alarm Signaling Light, etc.
MA2FE3
Extension Cable 4x0.35 mm with Male and Female connector.
MA50/FEC Length 50 cm
MA100/FEC Length 100 cm
MA200/FEC Length 200 cm
Connection cable with AMP male connector for single IS3W..
sensor
MA35/CR Length 35 cm
MA50/CR Length 50 cm
MA100/CR Length 100 cm
MA150/CR Length 150 cm
Transformers for SMART 200 MTC
TRF1524/100 Output 15/24 Vac 100VA (can be used with up to 40 sensors)
TRF24/300VA Output 24 Vac/300VA (can be used with more than 40 sensors)
Stabilized Power Supply with 24 Vdc output, 10A Peak, 6A
continuous
PSU 10A Required with more than 40 sensors (up to a maximum of 100
sensors for each PSU 10A)
Printer for SMART 200 MTC
PRNT 01 Printer with clock-calendar feature for production report, including
CV485/232 conversion interface cable.

Technical Data and Installation
SMART 200 MTC - 2.5 -
Installation of the IS3W/MTC Sensors
The installation of IS3W.. sensors is an extremely simple operation:
Prepare the adequate connection cable.
Open the rear cover of the sensor.
!Plug the male connector of the cable into the Female connector of the
sensor (the reference key on the male connector must be positioned on
the upper side of the connector).
"Close the rear cover and secure the sensor using a M3 screw .
Check that the yarn can freely enter and exit the detection zone .

Technical Data and Installation
- 2.6 - SMART 200 MTC
Page intentionally left blank

Operation
SMART 200 MTC -3.1 -
3
33
3 –
––
– OPERATION
OPERATIONOPERATION
OPERATION
SMART 200 MTC Terminal Features
As for all SMART BTSR systems,the operation of SMART 200 MTC system is
controlled by just 5 membrane buttons and it is monitored by a LCD graphic
display, which guides the operator through all programming and administration
phases of the system, by means of straight-forward messages which can be
understood clearly and immediately.
On the top left hand side of each button there is a red LED, which indicates that the
button is pressed down.
The display screen includes two separate zones used respectively for displaying
messages to the operator during the system programming and administration
phases and for signaling the operating status and levels in which the system is
working .
The following picture shows the location of the buttons and display zones that
constitute the control panel of the SMART 200 MTC system.

Operation
- 3.2 - SMART 200 MTC
1. ENTER button
It allows to activate the function selected from the menu (indicated by the
symbol >), to move to the programming of the displayed function or to confirm the
setting value displayed on the messages screen.
2. RESET button
It allows return to the previous level of the menu (next upper level), without
continuing with the currently selected function, or without confirming the value of
a setting entered by mistake.
3. NEXT CY button
During navigation within the menus this button allows selection of next option
in the same menu level; this button has a cyclical function in the sense that
when the last choice from the menu has been selected, it returns to the first
option of the same menu.
When alphanumeric data are entered (for instance the Keycode access), this
button allows the increase of characters displayed where the cursor is located,
according to the following cyclic sequence:
When entering numeric data (for example the number of sensors) it allows the
increase of numeric value of the field. If it is held down continuously the
numeric field increments more rapidly.
4. CONTROL button
During parameter programming, it allows changing the position of the cursor.
5. REPEAT button
During navigation within the menus selection of the previous choice is allowed
while remaining inside the same menu level. This button has a cyclical function
in the sense that when the first choice of menu is selected it returns to the last
option of the same menu.
When alphanumeric data are entered (for instance the Keycode access), this
button allows the decrease of the characters displayed where the cursor is
positioned, according to the following cyclic sequence:
When entering numeric data (for example the number of sensors) it allows the
decrease of numeric value of the field. If it is held down continuously the
numeric field decrements more rapidly.

Operation
SMART 200 MTC -3.3 -
6. Operator’s message Area:
The menu choices, or settings for the selected function during programming or
setup phase of the system as well as service messages are displayed with large size
fonts (1,5 x 0,8 cm), easy to read even from a distance, when the system is running
normally. In other words, it shows all the necessary information to guide the
operator step by step through the programming phase and interactive management
of the system.
When the displayed lines refer to the menu items, the selected one is indicated with
the symbol >.
The presence of a flashing cursor (---) indicates the position where the operator can
enter an alphanumeric character or variable setting which will replace the value
currently displayed.
When you select the GRAPH function from the main menu, this area of the screen
is used to graphically represent the count progress.
7. Operating Status Signaling Area
To enable a more direct and evident interpretation of the operating context in
which you are working, on the right hand side of the operator message area, 6
rectangular boxes (labels) are implemented. They display the operating status of
the system
More specifically, the PROGRAM label indicates that you are operating in one of
the following modes: configuration, programming or data transmission to the
sensors.
The CONTROL label indicates that the system is operating normally with all
monitor functions enabled, and according to the settings currently set in the system.
In this phase the message display indicates CONTROL MTC.
The TARGET label indicates that one or multiple sensors reached the number of
meters setup ( target ).
The ERROR label indicates that an error has been detected during normal
operation of the system. In this case the message display shows the type of error
detected (for further information please refer to Operations Sequences and to
Chapter 4 “Troubleshooting and Maintenance”).
The labels P1 .. P5 indicate the hierarchic level of the menu in which you are
operating. P1 is the highest level, P5 is the lowest hierarchical level. To move
from an upper to a lower level you must normally press down the ENTER button,
while to do the opposite, i.e. going from a lower to an upper level you must press
the RESET button.
SMART
200 MTC

Operation
- 3.4 - SMART 200 MTC
IS3W/MTC Sensor Features
The IS3W.. devices are electronic sensors able to measure and control, thanks to a
sophisticated patented control technique, the amount of yarn collected by the textile
machine and to stop the position when the desired amount (TARGET) is reached.
The image variation technique makes the IS3W.. device free of environmental/yarn
conditions, such as humidity, conductivity and machine vibrations, and, even more
important, does not require any contact with the yarn under control, thus allowing a
perfect monitoring, without affecting the tension characteristics of the yarn itself.
The IS3W.. devices are fully programmable and easy adaptable to the quality
control of any type of yarn.
Function of the IS3W/MTC Sensors
The IS3W.. sensors allow the real time detection of strokes, i.e. the crossings of
yarn within the optical reading zone , and stop the position when reaching the set
TARGET; furthermore, if properly programmed, they can detect the yarn
broken/missing condition.
The IS3W.. sensors have two signaling lights (green LED and red LED) and an
optical button “Touch Light”.
The “Touch Light” is used to perform the Automatic Numbering and Counter
Reset operations.
During the automatic numbering of the sensors (blinking green LED), it is
sufficient to skim the "Touch Light" to assign the sensor the number shown on
device configuration screen.
On the contrary, to reset the counters you must continuously touch the sensor for at
least one second; this avoids possible undesired resets due to brief accidental
contacts.
Touch Light

Operation
SMART 200 MTC -3.5 -
Interface Specifications
The IS3W.. sensors communicate with the external environment using the
following signals:
1 Output signal (STOP).
2 Optical signaling (green and red LEDs)
1 Touch Light used by the operator to perform the sensor numbering and to
manually reset the counter.
STOP signal
The STOP signal is an OPEN COLLECTOR output through which the IS3W..
sensor signals three possible conditions:
-Normal operation ( regular strokes of yarn inside the sensor detection
zone ).
-Missing yarn stroke inside the sensor detection zone (broken / missing
yarn failure)
-Target reached
From the electrical point of view, the STOP output can be configured either as a
Normally Open (ST-NcO) contact or as a Normally Closed (ST-NCo) contact, while
for what concerns the timing, it can be configured either as a continuous signal
(ST-Cp) or as a 2 seconds/10 seconds pulse signal (ST-cP) to indicate a failure
condition, and as a continuous signal (STG-CT) or as a 4 Hz square signal (STG-
SQ), to indicate the Target reached condition.
Starting from the Software Version 4.0, the STOP signal may be used to
fulfill a further function:
- Possibility to temporarily interrupt the meter count, by forcing the STOP
signal to Ground (STE-On)
(the count will restart as soon as the STOP signal returns to high electrical
level).
Obviously this function can be used only if the STOP signal has been
programmed as Normally Open (ST-NcO) contact.
Otherwise (ST-NCo), the function will have no effect.

Operation
- 3.6 - SMART 200 MTC
STOP Signal Timing
The following table shows in detail the possible STOP signal states within the various operating conditions.
STOP Signal Timing Operating Condition Signal
Configuration
Failure (Yarn Broken) ST-Cp
Failure (Yarn Broken) ST-cP
(2 sec.)
Failure (Yarn Broken) ST-cP
(10 sec.)
Target Reached STG-CT
Target Reached STG-SQ
Normally Open (ST-NcO) Contact
Failure (Yarn Broken) ST-Cp
Failure (Yarn Broken) ST-cP
(2 sec.)
Failure (Yarn Broken) ST-cP
(10 sec.)
Target Reached STG-CT
Target Reached STG-SQ
Normally Closed (ST-NCo) Contact
BYarn Broken TTarget