Sensopart FT 50 C S1 Series Service manual

Montage- und Bedienungsanleitung
Mounting and operating instructions
Instructions de service et de montage
FT 50 C...S1
Farbsensor mit serieller Schnittstelle
Colour sensor with serial interface
Capteur de couleur avec interface série

Copyright (Deutsch)
Die Wiedergabe bzw. der Nachdruck dieses Dokuments, sowie die entsprechende Speicherung in Datenbanken
und Abrufsystemen bzw. die Veröffentlichung, in jeglicher Form, auch auszugsweise, oder die Nachahmung der
Abbildungen, Zeichnungen und Gestaltung ist nur auf Grundlage einer vorherigen, in schriftlicher Form vorliegenden
Genehmigung seitens SensoPart Industriesensorik GmbH, zulässig.
Für Druckfehler und Irrtümer, die bei der Erstellung der Montageanleitung unterlaufen sind, ist jede Haftung ausge-
schlossen. Liefermöglichkeiten und technische Änderungen vorbehalten.
Erstveröffentlichung April 2007.
Copyright (Englisch)
No part of this document may be reproduced, published or stored in information retrieval systems or data bases in
any manner whatsoever, nor may illustrations, drawings and the layout be copied without prior written permission
from SensoPart Industriesensorik GmbH.
We accept no responsibility for printing errors and mistakes which occurred in drafting this manual. Subject to delive-
ry and technical alterations.
First publication April 2007
Copyright (Français)
Toute reproduction de ce document, ainsi que son enregistrement dans une base ou système de données ou sa
publication, sous quelque forme que ce soit, même par extraits, ainsi que la contrefaçon des dessins et de la mise en
page ne sont pas permises sans l’autorisation explicite et écrite de SensoPart Industriesensorik GmbH.
Nous déclinons toute responsabilité concernent les fautes éventuelles d’impression et autres erreurs qui
auraient pu intervenir lors du montage de cette brochure. Sous réserve de modifications techniques et de disponibili-
té pour livraison.
Première publication Avril 2007
SensoPart Industriesensorik GmbH
Am Wiedenbach 1
D-79695 Wieden
Inhalt / Content / Contenu
Deutsch .................................................................................................................. 5
English.................................................................................................................. 33
Français................................................................................................................ 60

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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Contents
1 Guide to symbols................................................................................................................................................35
2 Safety instructions ..............................................................................................................................................35
3 Correct use .........................................................................................................................................................36
4 Performance .......................................................................................................................................................36
5 Mounting.............................................................................................................................................................37
5.1 Dimensional drawing..................................................................................................................................37
5.2 Mounting the sensor ..................................................................................................................................37
6 Electrical installation ...........................................................................................................................................38
7 Use and configuration.........................................................................................................................................39
7.1 Displays and configuration elements .........................................................................................................39
7.2 Possible configurations and operating modes ...........................................................................................40
7.3 Configuration via the control panel ............................................................................................................41
7.3.1 Quick user guide (068-13883) see fold-out page..............................................................................41
7.3.2 Activate configuration mode (conf) ...................................................................................................41
7.3.3 Menu „C“: Teach a single colour .......................................................................................................41
7.3.4 Menu „C+“: teach, add, link further colours.......................................................................................43
7.3.5 Menu „S“: Scanning a single colour range........................................................................................44
7.3.6 Menu „S+“: Scan, add, link further colour ranges .............................................................................45
7.3.7 Menu „F“: Configurating special functions ...........................................................................................46
8 Communication via the serial interface...............................................................................................................47
8.1 Basic characteristics and parameters of the serial sensor interface..........................................................47
8.2 Description of protocol ...............................................................................................................................48
8.3 Telegram structure .....................................................................................................................................48
8.4 Overview of master commands: ................................................................................................................49
8.5 Commands for Master commands.............................................................................................................50
8.5.1 Permanent storage of configurations ................................................................................................50
8.5.2 Read software version ......................................................................................................................50
8.5.3 Activate factory setting......................................................................................................................51
8.5.4 Change the sensor’s address ...........................................................................................................51
8.5.5 Lock and unlock keys........................................................................................................................51
8.5.6 Configure special functions (N.O. / N.C. and drop-out delay time) ...................................................52
8.5.7 Read colour channel .........................................................................................................................52
8.5.8 Read all configuration settings..........................................................................................................53
8.5.9 Read colour vector (current measured colour value)........................................................................54
8.5.10 Transfer colour matrix .......................................................................................................................55
8.5.11 Teach colour and scan colour range .................................................................................................56
8.5.12 Set tolerance.....................................................................................................................................57
8.5.13 Set data transfer rate ........................................................................................................................57
9 Care and maintenance .......................................................................................................................................58
9.1 Cleaning.....................................................................................................................................................58
9.2 Transport, packaging, storage ...................................................................................................................58
9.3 Disposal .....................................................................................................................................................58
10 Troubleshooting ..................................................................................................................................................59
11 Technical data.....................................................................................................................................................59
12 Order information................................................................................................................................................60
12.1 Order information ......................................................................................................................................61
12 Références de commande .................................................................................................................................90
12.1 Accessoires ...............................................................................................................................................90

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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1 Guide to symbols
Warnings and other information are signalled by symbols in this manual. They are accompanied by hea-
dings. The following symbols are used:
WARNING
... indicates a possibly dangerous situation which can cause death or serious injury if not avoided.
CAUTION
... indicates a possibly dangerous situation which can cause material damage if not avoided.
INFORMATION
Useful tips and recommendations as well as information for efficient use of the sensor.
2 Safety instructions
In order to avoid accidents, injuries or material damage, act with caution and always observe the following
safety instructions:
WARNING
The FT 50 C...S1 must never be used to protect the safety of individuals or technical applicati-
ons.
All the safety and handling instructions indicated in these mounting and operating instructions
must be observed.
The valid on-site accident prevention regulations and general safety regulations must be
observed.
Read these mounting and operating instructions carefully before using the sensor.
The manual is a product component and must be kept in immediate proximity of the sensor and
accessible to personnel at all times.
Connection, mounting and configuration of the sensor is to be carried out by trained personnel
only.
It is forbidden to tamper with or alter the device in any way!

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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3 Correct use
The FT 50 C...S1 is a colour sensor for the detection of objects in varying colours in proximity mode (for
opaque objects) and reflector mode (for transparent objects).
WARNING
The FT 50 C must never be used to protect the safety of individuals or technical applications.
4 Performance
The colour sensors of the FT 50 C...S1 series are ideal for on-line colour detection in industrial procedures and
processes.
• Reference colours are easily stored using a teach-in process – either by pressing a button on the sensor or via
an external input cable.
• Colour selectivity (colour and intensity) can be individually adapted to the particular application during the
teach-in process.
• With inhomogeneous colour surfaces, a colour range / colour spectrum can be scanned.
• It is possible to add reference colours or extend the colour range by up to 4 steps using the “Teach +“ / “Scan
+“ function without spanning too large a colour range. A high colour selectivity is thus also achieved via a larger
colour range with up to 5 colour characteristics.
• In operating conditions, the colour of the object is compared with the reference values which have been taught
and the result is indicated via the integrated switching output.
• Once colours have been taught, they are reliably recognised even at a varying scanning distance.
All FT50 C ...S1 sensors are equipped with a bus-compatible, serial interface (RS485) for bi-directional transmission
of colour values as well as the setting of sensor functions. The overriding control system controls data exchange.
Data transfer occurs through an exchange of short telegrams.
• This makes it possible to teach-in any number of colours and store them as colour vectors (reference value incl.
tolerances) in the control system via the interface.
• Before beginning the process, the relevant reference colour is transferred back to the sensor. In operating con-
ditions, the sensor compares the actual colour with the reference colour and signals the result to the switching
output. Repeated teaching of colours is unnecessary.
• During on-line access via the RS 485 interface, there are 2 further possibilities:
- The internally stored colours / colour ranges (max. 5) can be evaluated separately
- The actual values can be transferred via the interface. In this case comparison between
the actual colour and the reference colour is carried out via the control system.
Other sensor performances at a glance:
• Colour detection possible even in transmitted light (on reflector)
• High colour selectivity, insensitive to variations in scanning distance
• Adjustable signal mode (N.O. / N.C)
• Choice of operating mode - either permanent or triggered (blanked out)
• Connector plug can be rotated by 270°
• Maintenance-free

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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5 Mounting
5.1 Dimensional drawing
5.2 Mounting the sensor
Screw sensor to suitable holder e.g. type MS F 50 or MSP F 50* (not included in delivery) using the fixing holes.
Fit the sensor in a place where the distance to the object is as constant as possible (little variation in scanning
distance).
INFORMATION
Observe the following operating conditions:
• The distance to the object must be within the sensor’s scanning distance (see technical data)
• The direction of movement of the object should be cross-wise to the sensor’s front screen
(Illustr. 3+4).
• With strongly reflective or shiny surfaces, incline the sensor by approx. 10-30° in relation to
the surface of the object (Illustr. 5).
• In transmitted light mode, RF 10* C reflective foil * should be fitted opposite the colour sensor
so that the light beam hits the centre of the foil (Illustr. 6).
*Part number, see list of accessories
CAUTION
In the case of strong vibrations (shocks / oscillations), the sensor must be given constructive
protection from damage
Illustr. 1
15300350
Illustr. 2
15300065

Illustr. 3
15500270
Illustr. 4 Illustr. 5
15500697
Illustr. 6
09113288


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6 Electrical installation
Rotate the connector plug for the connection cable, so that the cable can be connected easily, without kinks.
Fit socket of the connector cable and screw tight (authorised approx. tightening torque 0.5 to 1 Nm).
Secure connection cable (for example with cable retainer).
Connect sensor according to Ilustr. 7 / IIlustr. 8
CAUTION
PIN 1 and PIN 5 are the RS 485 interface connections and must not be connected to the power
supply. This would destroy the FT 50 C.
Ilustr. 7 / Ilustr. 8 Connection diagram
PIN Colour Use
1 (WH) White RS 485 Y/A = serial interface
2 (BN) Brown + UB= supply voltage
3 (GN) Green Q = switching output
4 (YE) Yellow IN ES = input for external scan
Colour scan ðwhen >3s high (> 12 V to 28 V)
Run ðwhen low (< 3 V) or blank
5 (GY) Grey RS 485 Z/B = serial interface
6 (PK) Pink IIN ET = input for external teach-in
Teach-in ðwhen >3s high (> 12 V to 28 V)
Run ðwhen low (< 3V) or blank
7 (BU) Blue - UB= supply voltage
8 (RD) Red IN KL/TR = IN KL/TR = input for key lock (KL) or triggering (TR)
(TR = Triggerung)) parametrizable
a.) if set to key lock (KL):
keys locked ðwhen high (> 12 V to 28 V)
keys free ðwhen low (< 3 V) or blank
b.) if set to triggering (TR):
triggered ðwhen high (> 12 V to 28 V)
unsolicited ðwhen low (< 3 V) or blank
Response time ð< 10 ms
Switch on power supply (observe authorised operating voltage).
Sensor is ready for operation after power-on delay (≤ 300 ms). LED operating display (green) must light up.
INFORMATION
If several sensors are connected via the RS 485 bus, reflections can occur which may impair
transmission. The last device in the chain must therefore be fitted with a load resistor (optimum
value: 120 Ohm).



Illustr. 7
15500473



Illustr. 8
15500474

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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7 Use and configuration
The sensor has different operating modes and functions. It has a serial RS 485 interface for the transfer of colour
values and configuration of sensor functions.
Sensor configuration can be carried out via the control panel using the

and keys.
CAUTION
Push bottons only with finger! Do not use sharp objects!
7.1 Displays and configuration elements
Keys and their functions:
General operating functions
Keys Description In operating mode In configuration mode

SET
Pressing key > 3 s activates configuration
mode
ðLED „C“ flashes yellow to confirm
Quick press and release:
ðjump to next menu
ðsave and confirm set values
Continue No function Alter configuration and jump to next
menu / point

Entire control
panel No function
Pressing both keys together activates ESC
(Escape)
ðquit configuration mode without saving
modifications
INFORMATION
A time lock prevents short unintentional pressure on the

key from activating configuration
mode.
Once configuration mode has been opened, a time window (duration approx. 20 s) also opens.
Should no further input occur during this period, then the sensor switches back to operating
mode.
LEDs (Illustr.9) indicate the selected menus and configurations.
Display function
LED Colour Use In operating mode In configuration mode
Green Operating mode
display
LIGHTS UP,
when sensor is ready for use.
LIGHTS UP,
when sensor is ready for use.
C Yellow C = Colour
ðteach colour
ðSignal status
LIGHTS UP, (in switching
mode N.O. = Factory setting)
if object colour = taught colour
(switching output „Q“ = active).
Function inverted when swit-
ching mode N.C. is selected.
FLASHES,
if menu „C“ (teach a colour) is selec-
ted,
FLASHES with „+/F“,
if menu „C+“ is selected

Illustr.9
15500349

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Display function
LED Colour Use In operating mode In configuration mode
S Yellow S = Scan
ðScan colour
No function FLASHES,
if menu „S“ (scan a colour) is selected,
FLASHES with „+/F“,
if menu „S+“ is selected
+/F Yellow C+ = Teach+
S+ = Scan+
ðteach / scan
further colours
No function FLASHES with „C“,
if menu „C+“ (teach extra colours) is
selected or with „S“,
if menu „S+“ (scan extra colours) is
selected
+/F Green
flashing
F = Functions
(special functions)
No function FLASHES,
if menu „F“
(special functions) selected
Tol. C Green Tol. C
(Tolerance Col.)
No function Set colour tolerance (4 levels)
Tol. I Red Tol. I
(Tolerance Int.)
No function Set intensity (grey levels)
(4 levels)
Tol. C
Tol. I
Red
flashing
Specific special
functions
No function Special functions are indicated by
special LED combinations
7.2 Possible configurations and operating modes
Different configurations are possible with the FT 50 C ...S1.
They are divided into 5 main menus.
Possible functions, configurations and operating modes:
Factory setting
Main menu „C“
• Teach-in the (individual) colours
Tolerance for colour tone and intensity is set separately. Neutral White (Kodak 90%)
Main menu „C+“
• Teach-in another colour with a disjunctive link to max. 4 existing
colours.
Tolerance for colour tone and intensity is set separately.
Neutral White (Kodak 90%)
for all channels
Main menu „S“
• Scan a colour spectrum (a colour range) Neutral White (Kodak 90%)
Main menu „S+“
• Scan, add further colour ranges with a disjunctive link to max. 4
already scanned colour ranges
Neutral White (Kodak 90%)
for all channels
Main menu „F“
• Reset sensor to factory setting -
• Configure drop-out delay time Drop-out delay time deactivated
• Configure signal mode (N.O. / N.C) Signal mode N.O.
• Configure PIN 8 for key lock or trigger function (lock or triggering via
electrical connection) PIN 8 is provided for triggering

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Factory setting
Also via the electrical interface:
• It is possible to teach a reference colour via the external input cable
„IN ET“
• It is possible to scan a colour range via the external input cable
„IN ES“
• All sensor functions can be configured and read-out via the RS 485
interface
• The individual colours / colour ranges can be evaluated individually via
the RS 485 interface
Also via the RS 485 interface:
• Sensor address 1
7.3 Configuration via the control panel
7.3.1 Quick user guide (068-13883) see fold-out page
7.3.2 Activate configuration mode (conf)
INFORMATION
= LED ON / = LED flashes / = LED OFF
Activity Picture follows Remark
> 3 s

until LED „C“
(yellow) flashes

LED flashes when configuration mode is activated.
Once configuration mode has been activated, a time window of approx.
20 s opens. Should no further input occur during this period, then the sensor
switches back to operating mode.
7.3.3 Menu „C“: Teach a single colour
INFORMATION
• When a colour is taught, all previously taught or scanned colours / colour ranges are deleted.
• Colour and intensity tolerance are set individually during the programming procedure.
• After the teaching process, the yellow LED “C“ lights up when the switching output „Q“ is
active a colour has been detected (when switching mode = N.O. = Factory setting is selected).

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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Procedure:
Step Menu item Activity Picture follows Remark
1 Operating
mode (no
menu item)
Position object Observe operating parameters such as scanning distance,
direction of movement, inclination etc. (see chapter
“Mounting“).
2 Press
> 3 s

until LED „C“
(yellow) flashes

LED „C“ (yellow) flashes, when time lock is open and
configuration mode is activated.
3 Teach
colours
Press

Press button briefly and release it. When the button gets
released, the colour is taught.
4 Release


Colour value is stored in sensor.
Sensor is ready for the setting of colour tolerance. LED
„C“ (yellow) lights up when colour is detected,*
LEDs „Tol. C“ (green) light up
5 Press
several
times until
the required
tolerance is
selected
Select colour tolerance (colour selectivity).
1 2 3 4




1 = smallest tolerance, 4 = greatest tolerance
3 = factory setting
6 Confirm with


Colour tolerance is stored.
Sensor is ready for the setting of intensity tolerance
LED „C“ (yellow) lights up when colour is detected,*
LEDs „Tol.I“ (red) light up
7 Press
several
times until
the required
tolerance is
selected
Select intensity tolerance (grey selectivity)
1 2 3 4




1 = smallest tolerance, 4 = greatest tolerance
2 = factory setting
8 Confirm with


Sensor is ready for use.
LED „C“ (yellow) lights up when colour is detected / swit-
ching output „Q“ is active*
* when switching mode = N.O. = Factory setting is selected.

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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Teach-in colours via PIN 6:
The teach-in procedure can also be initiated by means of the input cable IN ET (PIN 6). For this purpose, the input
cable must be set for >3s to High (time lock).The colour is taught by the variation of the edge (from High to Low).
After the teach-in process, the colour is stored with the last manual tolerance settings. If a colour has not yet been
taught manually (via the control panel), the factory values (colour value tolerance level 3 / intensity tolerance level 2)
are adopted.
7.3.4 Menu „C+“: teach, add, link further colours
INFORMATION
• The „C+“ (Teach +) function enables the teaching of 1 to 4 further reference colours. They are
automatically linked to one another. Previously taught and scanned colours / colour ranges
remain stored.
• Colour and intensity tolerance are set individually during the programming process.
• If more than 5 colours are taught, the oldest is erased (FIFO)
• After the teach-in process, the yellow LED „C“ lights up when the switching output „Q“ is
active a colour has been detected (when switching mode = N.O. = Factory setting is selected).
Procedure:
Step Menu item Activity Picture follows Remark
1 Operating
mode (no
menu item)
Position object Observe operating parameters such as scanning distance,
direction of movement, inclination etc. (see chapter
“Mounting“).
2 Press
> 3 s

until LED „C“
(yellow) flashes

LED „C“ (yellow) flashes, when time lock is open and
configuration mode is activated.
3 Press

Menu “Scan further colours“ is selected LED „C“ and „+”
(yellow) flashes
4 Teach
colours
Press

Press button briefly and release it. When the button gets
released, the colour is taught.
5 Release


Colour value is stored in sensor.
Sensor is ready for the setting of colour tolerance.LED „C“
(yellow) lights up when colour is detected,*
LEDs „Tol. C“ (green) light up.
6 Press
several
times until
the required
tolerance is
selected
Select colour tolerance (colour selectivity)
1 2 3 4




1 = smallest tolerance, 4 = greatest tolerance
2 = factory setting

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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Step Menu item Activity Picture follows Remark
7 Confirm with


Colour tolerance is stored.
Sensor is ready for the setting of intensity tolerance
LED „C“ (yellow) lights up when colour is detected,*
LEDs „Tol.I“ (red) light up
8 Press
several
times until
the required
tolerance is
selected
Select intensity tolerance (grey selectivity).
1 2 3 4




1 = smallest tolerance, 4 = greatest tolerance
2 = factory setting
9 Confirm with


Sensor is ready for use
LED „C“ (yellow) lights up when colour is detected / swit-
ching output „Q“ is active*
* when switching mode = N.O. = Factory setting is selected.
Repeat the configuration procedure (steps 1 – 8) to teach (add) further colours.
7.3.5 Menu „S“: Scanning a single colour range
INFORMATION
• Function for the scanning of an inhomogeneous colour surface.
• If a colour is scanned, all previously taught and scanned colours / colour ranges are deleted.
• After the scanning process, the yellow LED “C“ lights up when the switching output „Q“ is
active a colour has been detected (when switching mode = N.O. = Factory setting is selected).
Procedure:
Step Menu item Activity Picture follows Remark
1 Operating
mode (no
menu item)
Position object Observe operating parameters such as scanning distance,
direction of movement, inclination etc. (see chapter
“Mounting“).
2 Press
> 3 s

until LED „C“
(yellow) flashes

LED „C“ (yellow) flashes, when time lock is open and
configuration mode is activated.
3 Press
2x

Menu „Scan colour range“ is selected LED “S“ (yellow)
flashes
4 Scan colour
range
Press

and keep
pressed

The colour range is scanned as long as

is pressed.

FT 50 C...S1 Colour sensor - GB - 068-13821 - 25.07.2007-01
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Step Menu item Activity Picture follows Remark
5 Release


Colour range.
Sensor is ready for use
LED „C“ (yellow) lights up, when colour is detected / swit-
ching output „Q“ is active (when switching mode = N.O. =
Factory setting is selected).
Scanning a colour via PIN 4:
The scanning process can be activated via the input cable IN ES (PIN 4). For this purpose, the input cable must be
set for >3s to High (time lock). Then the colour is scanned for as long as the signal at PIN 4 is high.
7.3.6 Menu „S+“: Scan, add, link further colour ranges
INFORMATION
• The “S+“ (“Scan +“) function makes it possible to scan 1 to 4 further colour ranges and extend
the colour range by up to 4 steps.
• When a colour range is scanned with “S+“ (Scan+), previously taught and scanned colours
remain stored.
• If more than 5 colour ranges are taught, the oldest is erased (FIFO)
• After the scanning process, the yellow LED “C“ lights up when the switching output „Q“ is
active a colour has been detected (when switching mode = N.O. = Factory setting is selected)
Procedure:
Step Menu item Activity Picture follows Remark
1 Operating
mode (no
menu item)
Position object Observe operating parameters such as scanning distance,
direction of movement, inclination etc. (see chapter
„Mounting“.
2 Press
> 3 s

until LED „C“
(yellow) flashes

LED „C“ (yellow) flashes, when time lock is open and
configuration mode is activated.
3 Press
3x

Menu „Scan further colour ranges“ is selected LED „S”
and „+“ (yellow) flashes.
4 Scan further
colour
range
Press

and keep
pressed
The colour range is scanned for as long as

is
pressed.
5 Release


Additional colour / colour range is stored.
Sensor is ready for use
LED „C“ (yellow) lights up, when colour is detected / swit-
ching output „Q“ is active (when switching mode = N.O. =
Factory setting is selected).
Repeat steps 1-5 of the configuration process to teach (add) further colour ranges.

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7.3.7 Menu „F“: Configurating special functions
Individual functions are configurated or activated / deactivated in this menu.
Step Menu item Activity Picture follows Remark
1 Press
> 3 s

until LED „C“
(yellow) flashes

LED „C“ (yellow) flashes, when time lock is open and
configuration mode is activated.
2 Press
4x

Menu „Special functions“ is selected.
LED „F“ (green) flashes
3 Special
functions
Press


Menu „Special functions“ is activated.
Sensor jumps to first setting (reset to factory setting)
LEDs „Tol. I“ (red) flash
Reset to
factory
setting

LEDs „Tol. I“ (red)
flash.
Reset sensor to
factory setting with


If

was
pressed, the LED
„S+/F“ (green)
flashes alternately
with LEDs „Tol. I“
(red) to confirm
4 Press Continue to next function (drop-out delay time)
Drop-out
delay time

Drop-out delay
time inactive:
Activate with


Drop-out delay
time active:
Deactivate with

5 Press Continue to next function (Set signal type for switching
output „Q“).
Set signal
type „Q“

„Q“ (PIN 3) is set
as N.O..
Switch to N.C. with


„Q“ (PIN 3) is set
as N.C.
Switch to N.O. with

6 Press Continue to next function (Configure PIN 8 input)
Configure
PIN 8 input

PIN 8: Triggering is
active.
Switch to key lock
function with


PIN 8: lock is
active.
Switch to triggering
function with


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Step Menu item Activity Picture follows Remark
7 Press Continue to „Exit menu”
Exit menu

8 Press

The settings are stored and configuration mode is exited.
8 Communication via the serial interface
All FT50C ...S1 sensors are equipped with a bus-compatible, serial interface (RS485) for bi-directional transmission
of colour values as well as the setting of sensor functions. The overriding control system controls data exchange.
Data transfer occurs through an exchange of short telegrams.
• This makes it possible to teach-in any number of colours and store them as colour vectors (reference value incl.
tolerances) in the control system via the interface.
•Before beginning the process, the relevant reference colour is transferred back to the sensor. In operating con-
ditions, the sensor compares the actual colour with the reference colour and signals the result to the switching
output. Repeated teaching of colours is unnecessary.
•During on-line access via the RS 485 interface, there are 2 further possibilities:
- The internally stored colours / colour ranges (max. 5) can be evaluated separately
- The actual values can be transferred via the interface. In this case comparison between the actual colour
and the reference colour is carried out via the control system.
INFORMATION
If several sensors are connected via the RS 485 bus, reflections can occur which may impair
transmission. The last device in the chain must therefore be fitted with a load resistor (optimum
value: 120 Ohm).
8.1 Basic characteristics and parameters of the serial sensor interface
The serial interface of the sensor has the following characteristics:
Fixed factory configuration modifiable
Hardware RS485, half-duplex
Pin1 Y/A, Pin5 Z/B
Data transfer rate 9600 Baud
Stop bits 1
Parity no
Bits / Byte 8
Access method Master / Slave (the sensor acts as
slave)
Sensor address 1

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8.2 Description of protocol
The data transfer protocol is bus-compatible.
Data flow is controlled by the master (PC, SPC) via the software protocol. The sensor only sends data on request
and has an address within the range 1 to 127 (factory setting = 1).
A data transfer cycle consists of a command telegram addressed to the sensor by the master and the sensor’s reply
telegram.
The sensor begins with the reply telegram within 100µs after receipt of the command telegram.
8.3 Telegram structure
Each byte consists of a selection bit (D7) and 7 data or address bits (D0 to D6).
Byte structure
D7 D6 D5 D4 D3 D2 D1 D0
Selection bit 7 data bits / address bits
A complete telegram, from both the master and the slave, consists of at least 4 bytes and has the following structure:
General telegram structure
Master Reply sensor
1st byte Address (1 to 127) corresponds with (129 to 255), as the selection bit of the
1st byte (D7) =1
2nd byte Length of telegram, number of all bytes (4 to 127), D7=0
3rd byte Command (see “Overview of master
commands”) D7=0
Reply (see reply telegram, below)
D7=0
4th byte to (n-1) byte Parameter (see parameter bytes, below) D7=0
n byte (last byte) Check sum exclusive OR of byte 1 to byte n-1, D7=0
The sensor is always addressed with its address in the 1st byte. The selection bit is always set with the first byte
(D7=1). This byte is thus always “Address +128“. The selection bit is not set (D7=0) with any other bytes.
•When the master sends a byte with a set selection bit, a new data transfer cycle is started, regardless of whe-
ther the previous cycle has been completed.
•The last byte is the check sum which is formed from the bitwise exclusive disjunction of all previous bytes.
•In the command telegram, the 3rd byte can adopt the values listed in the chapter “Overview of master com-
mands and examples of master commands”.
•In the sensor’s reply telegram, the 3rd byte (reply) can adopt the following values:
Possible reply telegram from sensor
Decimal Hex.: Meaning
89 59 Command has been carried out
78 4E Command could not be carried out;
Possible causes: check sum or parameter / command incorrect
•12 bit and 7 bit data is transferred in the parameter bytes (4th byte to (n-1) byte). The following formats are
used:
Possible parameter format:
7 bit data byte
D7 D6 D5 D4 D3 D2 D1 D0
0 Data byte bit [6..0]

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12 bit data item:
Byte i Byte i + 1
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
0 0 Data item bit [11..6] 0 0 Data item bit [5..0]
12 bit data item with switching output recognition (Q1 in bit D6):
Byte i Byte i + 1
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
0 0 Data item bit [11..6] 0 Q1 Data item bit [5..0]
8.4 Overview of master commands:
Command description Decimal Hex.: Remark Example
Store configurations
permanently
83 53 With this command, parameter settings and data are
stored permanently in the sensor. They thus remain in the
memory even after the power supply has been turned off.
8.5.1
Read software version
(SW)
118 76 8.5.2
Activate factory setting 87 57 The sensor resets all configurations incl. sensor address
to the factory settings.
8.5.3
Change sensor’s
address
76 4C Transfer new address to sensor 8.5.4
Lock and unlock keys 86 56 The command immediately locks or unlocks the operating
keys. It is not necessary to connect PIN 8. It is only pos-
sible to unlock the keys again by sending the appropriate
telegram command.
8.5.5
Configure special
functions
98 62 Configure N.O. / N.C. functions and drop-out delay time. 8.5.6
Read colour channel 99 63 Up to 5 colours / colour ranges are stored in separate
colour channels within the sensor. Upon receipt of the
command, the sensor transfers information on the colour
channels which were detected in the last measuring cycle.
8.5.7
Read colour vector 65 41 Read current measured colour value (colour vector). (Sen-
sor sends colour vector and the status of the switching
output in the last 12 bit data item).
8.5.8
Transfer colour matrix 105 69 The master programs the 5 colour channels. 8.5.9
Read all of sensor’s
configuration settings
63 3F The sensor transfers all configuration settings (parameters
and colour channels).
8.5.10
“Teach colour“ and
“scan“
88 58 Command for teach-in of colours and scanning of colour
ranges.The process consists of a command sequence
which must be executed.
8.5.11
Tolerance settings 73 49 Enter colour and grey selectivity (only constructive in
conjunction with “teach colour“ command).
8.5.12
Set data transfer rate 66 42 Setting of data transfer rate. Possible Baud rates are
4800, 9600, 19200 and 38400 Baud.
8.5.13

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8.5 Commands for Master commands
This chapter describes the possible commands and replies (3rd byte) and parameters (4th byte and following).
With each command, there is an example of a possible data transfer cycle.
8.5.1 Permanent storage of configurations
Command (byte 3): decimal 83; hexadecimal 0x53
Parameter: no
Reply (byte 3): decimal 89; hexadecimal 0x59
Parameter: no
INFORMATION
Only this command ensures that parameters and data are stored permanently in the sensor. They
thus remain in the memory even after the power supply has been turned off
Example telegram
(In the example, the sensor has the address 3):
Master telegram Sensor’s reply telegram
Designation Decimal Hex.: Bezeichnung Dezimal Hex.:
1st byte Address 131 83 1st byte Address 131 83
2nd byte Length 4 04 2nd byte Length 4 04
3rd byte Command 83 53 3rd byte Reply 89 59
4th byte Check sum 84 54 4th byte Check sum 94 5E
8.5.2 Read software version
Command (byte 3): decimal 118; hexadecimal 0x76
Parameter: no
Reply (byte): decimal 89; hexadecimal 0x59
Parameter: Main version 7 bit data byte, secondary version 7 bit data byte
The sensor sends the software version.
Example telegram
(In the example, the sensor has the address 1 and the SW version 3.5)
Master telegram Sensor’s reply telegram
Designation Decimal Hex.: Designation Decimal Hex.:
1st byte Address 129 81 1st byte Address 129 81
2nd byte Length 4 04 2nd byte Length 6 06
3rd byte Command 118 76 3rd byte Reply 89 59
4th byte Check sum 115 73 4th byte Main version 3 03
5th byte Secondary version 5 05
6th byte Check sum 88 58

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8.5.3 Activate factory setting
Command (byte 3): decimal 87; hexadecimal 0x57
Parameter: no
Reply (byte 3): decimal 89; hexadecimal 0x59
Parameter: no
The sensor resets all configurations (incl. sensor adress) to the factory settings
Example telegram
(In the example, the sensor has the address 1)
Master telegram Sensor’s reply telegram
Bezeichnung Dezimal Hex.: Bezeichnung Dezimal Hex.:
1st byte Address 129 81 1st byte Address 129 81
2nd byte Length 4 04 2nd byte Length 4 04
3rd byte Command 87 57 3rd byte Reply 89 59
4th byte Check sum 82 52 4th byte Check sum 92 5C
8.5.4 Change the sensor’s address
Command (byte 3): decimal 76; hexadecimal 0x4C
Parameter: new sensor address
Parameter format: 7 bit data byte
Reply (byte 3): decimal 89; hexadecimal 0x59
Parameter: no
The sensor adopts the new sensor address.
Example telegram
(In the example, the sensor has the address 3, the master alters the address to 122. The sensor still answers with
the old address after which it can only be addressed with the new address).
Master telegram Sensor’s reply telegram
Designation Decimal Hex.: Designation Decimal Hex.:
1st byte Address 131 83 1st byte Address 131 83
2nd byte Length 5 05 2nd byte Length 4 04
3rd byte Command 76 4C 3rd byte Reply 89 59
4th byte New address 122 7A 4th byte Check sum 94 5E
5th byte Check sum 48 30
8.5.5 Lock and unlock keys
Command (byte 3): decimal 86; hexadecimal 0x56
Parameter: bit 0: 0 unlock keys; 1 lock keys
Parameter format: 7 bit data byte