Leuze DDLS 170 Technical Description

Serial Optical Data Transmission with Bus Capability
DDLS 170

Technical Description

© All rights reserved, in particular the rights of reproduction, distribution, and translation. Duplication or reproduction in

any form (print, photocopies, microfilm or data) may only be carried out with the expressed written consent of
Leuze electronic GmbH + Co.

We reserved the right to make changes for the technical improvement of the product.

Table of Contents

1 General Information.................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..3

1.1 Explanation of symbols ..............................................................................3

1.2 Im p o r t a n t te r m s........... ........ ........ .............. .............. ........ .............. .............4

1.3 Declaration of Conformity...........................................................................4

2 Safety Notices................................................................................................5

2.1 Safety standard..........................................................................................5

2.2 Intended use ..... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..5

2.3 Working safely........ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..6

2.4 Organizational measures........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..6

3 Description........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..7

3.1 About the data transmission units of the DDLS 170 series.......... .. .. .. .. .. .. ..7

3.2 Characteristics of the DDLS 170 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..7

3.3 Benefits .......... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..8

3.4 Construction....................... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..9

3.5 Interface chara cteristics .... ......................................................................10

3.6 Function...................................................................................................11

3.7 Application examples ...............................................................................13

3.7.1 Examples of use (in principle)........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..13

3.7.2 INTERBUS.......................................................................................... 15

3.7.3 RS422 Point-to-point connection .......................................................16

3.7.4 Profibus, MPI, FMS, DP, mixed operation (FMS/DP) .........................17

3.7.5 Suconet K ................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..20

3.7.6 Connection variants for Profibus (MPI, FMS, DP) and Suconet K......21

4 Specifications..............................................................................................22

4.1 General specifications........ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..22

4.2 Dimensioned drawing...............................................................................23

5 Accessories / Order Designations..... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..24

5.1 Individual components ................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..25

5.2 Recommended cable...............................................................................26

6 Installation ...................................................................................................27

6.1 Storing, transporting.................................................................................27

6.2 Mounting and aligning............................ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..28

6.2.1 Preparation ............... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..28

6.2.2 Installation. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..29

6.2.3 Alignment.................... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..30

6.3 Connection information ............................................................................32

6.4 INTERBUS connection........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..33

6.4.1 Shielding..............................................................................................33

6.4.2 Terminal configuration for INTERBUS, RS422 - connection

terminals.............. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..34

6.4.3 Connection examples .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..35

6.5 Profibus, Suconet K connection........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..36

6.5.1 Terminal configuration for Profibus- (MPI, FMS, DP, FMS/DP),

RS485- and Suconet K - connection terminals ..................................36

6.5.2 Connection examples .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..37

7 Commissioning............................................................................................39

7.1 Steps before the first commissioning .......................................................39

7.1.1 Switching on the operating voltage .....................................................39

7.1.2 Alignment ............................................................................................39

7.2 Settings on the INTERBUS interface module...........................................39

7.3 Settings on the Profibus-, RS485- and Suconet K-interface module .......40

7.3.1 Setting the transmission rate (switch 1) ..............................................40

7.3.2 Bus interruption (switch 1)................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..41

7.3.3 Termination (switch 2)... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..41

8 Error Diagnosis / Failures and Troubleshooting ......................................42

8.1 Errors during commissioning....................................................................42

8.2 Other errors.... ..........................................................................................44

9 Maintenance.................................................................................................45

9.1 General maintenance information ........ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..45

9.2 Repair, Maintenance ........ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..45

Appendix (applies only to DDLS 170.1 and DDLS 170.2)

A Construction ................................................................................................48

B Specifications..............................................................................................50

B.1 General specifications.................. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..50

B.2 Dimensioned drawing...............................................................................51

B.3 Terminal configuration of interfaces .........................................................52

B.3.1 INTERBUS terminal configuration....... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..52

B.3.2 Profibus terminal configuration.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..52

C Examples of connection .............................................................................53

C.1 DDLS 170 – INTERBUS connection........................................................53

C.2 RS422 point-to-point connection..............................................................54

C.3 DDLS 170 – Profibus connection .............................................................54

D Installation and Commissioning ................................................................5 5

D.1 Preparation. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ..55

D.2 Installing the interface modules................................................................56

D.3 Installation................................................................................................57

D.4 Commissioning.........................................................................................58

E Accessories / Order Designation....................... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..59

1 General Information

About this document

The DDLS 170 data transmission system available up to now has been further de­veloped. This technical description covers the new, as well as the old, data trans­mission system.

·

The further-developed DDLS 170 is documented in Chapters 2 - 9.
Designation: DDLS 170/xxx.1-xxxx or DDLS 170/xxx.2-xxxx
(x = place holder for defined order designation, such as range and bus system;
further details can be found in Chapter 5 "Accessories / Order Designations").

·

Device-specific details pertaining to the previous data transmission system can
be found in the Appendix (Chapters A - E).

Designation: DDLS 170.1, or DDLS 170.2

1.1 Explanation of symbols

The following is an explanation to symbols used in this

technical description:

Attention !

This symbol appears in front of text which must be observed without fail.
Failure to observe the provided instructions could lead to personal injury or dama­ge to equipment.

Notice:

This symbol indicates text which contains important information.

☞ This symbol refers you to other chapters or other literature.
➜ This symbol indicates activities which are to be carried out.

Italics

To help you find information quickly, important terms and key words are listed in
the left-hand column in italics.

Leuze electronic DDLS 170 3

1.2 Impor tan t ter ms

DDLS 170

Type designation for the optical data transmission system from Leuze electronic,
consisting of two synchronized data transmission units.

DDLS 170/xxx.1-xxxx
DDLS 170/xxx.2-xxxx

Type designation of the further-developed data transmission units. One data trans­mission system consists of two DDLSs.

DDLS 170.1
DDLS 170.2

Type designation of the data transmission units available up to now. One data
transmission system consists of two DDLSs.

FSK modulation

Modulation by means of frequency shift keying.

FSK frequencies

Frequencies at which data are transmitted between DDLS units. The
DDLS 170/xxx.1-xxxx (DDLS 170.1) and DDLS 170/xxx.2-xxxx (DDLS 170.2) each
have their own assigned frequency pairs.

Full duplex

Simultaneous transmission and reception of data.

Half-duplex operation

Data are alternately transmitted and received only.

Transparent

The data transmission units function as passive transmission members in a bus sy­stem. The telegram structure is transmitted optically without being altered. The
transmitted data information are not subjected to interference.

Remote multifunction

display

Two highly visible LEDs for displaying reception level during coarse adjustment.

Bar graph

Close-up multifunction display for displaying reception level during fine adjustment.

INTERBUS

Bus system according to DIN 19258.

Profibus

Bus system according to DIN 19245.

Suconet K

Transmission system produced by Klöckner Möller

1.3 Declaration of Conformity

The DDLS 170 data transmission system was designed and manufactured in ac­cordance with applicable European normatives and guidelines.

Notice:

A corresponding Declaration of Conformity can be requested from the manufactu­rer.

The manufacturer of the product, Leuze electronic GmbH + Co. in D-73277
Owen/Teck, maintains a certified quality management system in accordance with
ISO 9001.

4 DDLS 170 Leuze electronic

2 Safety Notices

2.1 Safety standard

The DDLS optical data transmission system has been developed, tested and produ­ced in compliance with applicable safety standards. It corresponds to the state of
the art.

2.2 Intended use

Attention !

The protection of personnel and the device cannot be guaranteed if the device is
operated in a manner not corresponding to its intended use.

Optical data transmission systems of the type DDLS 170 are designed for the opti­cal transmission of data in the infrared range.

The data transmission units

·

may not be used in areas where interruption of data transmission, e.g. as a re­sult of blocked transmitter or receiver lens, could lead to damage or injury

·

may not be operated in rooms with explosive atmospheres

·

may not be used for medical purposes

Fields of application

The DDLS 170 optical data transmission system is designed, in particular, for the
following applications:

·

transmission of data output using the INTERBUS, Profibus and Suconet K field
bus protocols

·

use in automated high-bay warehouses

·

anywhere where data transmission to and from fixed or moving objects and over
large distances (up to 200 m) is required

Leuze electronic DDLS 170 5

2.3 Working safely

Attention !

Entering or making changes to the device, except where expressly described in
this operating manual, is not permitted.

Optics

Regularly clean transmission and reception windows on the DDLS 170.
Observe Chapter 9, "Maintenance".

Alignment

Use the bar graph regularly to check the alignment of the DDLS 170
(see Chapter 6.2.3 "Alignment").

2.4 Organizational measures

Documentation

Observe all instructions in this "Technical Description" without fail, particularly the
section entitled "Safety remarks".

Carefully store this operating manual. It should be accessible at all times.

Safety regulations

Observe the locally applicable legal regulations and the rules of the employer’s lia­bility insurance association.

Qualified personnel

Mounting, commissioning and maintenance of the device may only be carried out
by qualified personnel.

Electrical work must be carried out by a certified electrician.

Repair

Maintenance work must only be carried out by the manufacturer or by a service
center authorized by the manufacturer.

6 DDLS 170 Leuze electronic

3 Description

3.1 About the data transmission units of the DDLS 170 series

Where data have to be transmitted to and from moving objects, optical data trans­mission systems provide an ideal solution.

With the DDLS 170 series, Leuze electronic offers a range of efficient optical data
transmission units. The data transmission units are robust and are not subject to
wear.

Notice:

The DDLS data transmission system consists of two devices, each of which has a
transmitter and a receiver:

e.g. DDLS 170/120. -1110 and DDLS 170/120. -1110

3.2 Characteristics of the DDLS 170

The widespread use of bus systems in nearly all branches of industry requires data
transmission systems with high demands on:

·

transmission security

·

flexibility

·

operation

The DDLS 170 data transmission unit from Leuze electronic is a high-performance
transmission system. It enables transmission of the following bus protocols without
any physical contact:

·

INTERBUS

·

Profibus / MPI / SINEC L2 - FMS / SINEC L2 - DP / mixed operation FMS - DP

·

Suconet K (Klöckner Möller)

·

RS422 - systems up to 500 kbit/s

·

RS485 - systems up to 500 kbit/s (on request)

1

2

Leuze electronic DDLS 170 7

3.3 Benefits

The DDLS 170 is characterized by the following features:

·

The DDLS 170 can be operated at temperatures as low as - 30°C.

·

Interference-free data exchange in full-duplex operation, transmission rate up to
500 kbit/s at a max. range of 120 / 200 m and large functional reserves.

·

High interference immunity through special constructions such as galvanically se­parated interfaces and FSK modulation.

·

Fast and simple alignment by means of integrated remote multifunction display
and bar graph. The angles can be set independently of one another thanks to
the physical construction of the adjusting bracket.

·

All installation work can be carried out from the front. The DDLS 170 system can
be completely disassembled without removing the connection plate.

Switching off transmitter and receiver

·

Both the transmitter and the receiver can be switched off separately.
Example: Changing aisles of high-bay storage and retrieval units. By switching

off the transmitter and receiver during travel through curves, other optical sy­stems are not influenced and faulty data transmission does not occur as the re­sult of signals detected by the receiver which have been emitted by other optical
sensors.

For Profibus only

Signal regeneration

·

Several optical data transmission paths can be connected in series (see Chapter

3.7.4).

·

Trouble-free data transmission with Profibus FMS-Systems in Multi-Master confi­guration (indirect series connection, see Chapter 3.7.4).

·

Repeater function; signal regeneration increases the possible line lengths and
the number of nodes in the system.

For Profibus only

Selector switch during loss of visual contact

·

Shorter bus access times for Profibus systems in Multi-Master configuration on
renewed visual contact (see Chapter 3.7.4).

·

If the signal received by the data transmission unit receiver is inadequate, the
transmitted and received data are switched off.
In this way, undefined bus conditions occurring as the result of one-sided system
accesses are prevented.

8 DDLS 170 Leuze electronic

3.4 Construction

The DDLS 170 series data transmission units are durable, user-friendly and
easy to service. A data path consists of two synchronized data transmission
units:
e.g. DDLS 170/120. -1110 and DDLS 170/120. -1110

The data transmission unit consists of the following components:

1 Adjusting screws (2)
2 INTERBUS, Profibus (Suconet K) interface module
3 Bi-dir ectional trans mi tt er
4 Fastening screws (2)
5 Remote multifunction LED display: multif unction dis play , red, red blinking
6 Remote multifunction LED display: multif unction dis play , yellow
7 Receiver
8 Close-up multifunction display; bar graph for reception level (10 LEDs)
9 Interface monitor; LED red - transmit data
10 Interface monitor; LED green - receive data
11 Terminal strip

Fig. 1: DDLS 170 components

1

2

Leuze electronic DDLS 170 9

3.5 Interface characteristics

INTERBUS interface

The INTERBUS interface physically corresponds to an RS422 interface. It is char­acterized by the following features:

Protocol

·

Transmission of the INTERBUS protocol

Transmission rates

·

Transmission rates: 500 kbit/s with INTERBUS and

0 to 500 kbit/s with RS422 - systems

Cable connection

·

4-wire

Range of operation

·

Can be used for:

- bus operation (INTERBUS)

- point-to-point connection (RS422)

·

See also Chapters 3.7.2 and 3.7.3

Profibus interface

The Profibus interface (e.g. SINEC L2) physically corresponds to an RS485 interfa­ce. It is characterized by the following features:

Protocol

·

Transmission of the following Profibus protocols is possible:

- MPI Multi Point Interface (187.5 kbit/s)

- FMS Field Message System

- DP Decentralized periphery

- FMS/DP Mixed operation

Transmission rates

·

Can be set to all common transmission rates:
in kbit/s

- 9.60

- 19.20

- 38.40

- 57.60

- 93.75

- 187.50

- 375.00

- 500.00

Cable connection

·

2-wire

·

Terminator can be activated with slide switch

Range of operation

·

See Chapter 3.7.4

Suconet K interface

Protocol

·

Transmission of the Suconet K, K1 and K2 protocols

Transmission rates

·

Transmission rate of 187.5 kbit/s with Suconet K, K1 and K2
Transmission rate of 375 kbit/s with Suconet K

Cable connection

·

2-wire

·

Terminator can be activated with slide switch

Range of operation

·

See Chapter 3.7.5

10 DDLS 170 Leuze electronic

3.6 Function

Transmit / Receive

The transmitter transforms the electric signals into light signals by means of an IR­LED. The receiver transforms the light signals back into electric signals by means
of a photodiode.

Carrier frequency

To ensure that there is no mutual interaction during data transmission in full-duplex
operation, two different pairs of frequencies are used. These are identified by type

designations ... .1 ... and ... .2 ... .

Fig. 2: Transmit - receive principle

FSK modulation

Each device transmits its signal by means of frequency shift keying (FSK modula­tion). Information is bit-encoded in two frequencies.

Fig. 3: FSK modulation

The receiver filters the frequencies from the received signal and transforms them
back into bit sequence. Bit errors in the transmission, caused for example by light
flashes from fluorescent tubes, are filtered out in this way.

Transmission quality

The level of the received signals can be checked on both devices.

·

Remote multifunction LED:
Multifunction display (red, red blinking or yellow) for coarse tuning.

·

Close-up multifunction display:
Bar graph for reception level (10 LEDs) for fine-tuning.

·

For PLC:
Data transmission good - terminal 9
Data transmission critical - terminal 8

Monitoring

To monitor the aligned DDLS 170 or for contamination checks, connect both output
terminal 9 and terminal 8 to a PLC program.

DDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx

"0"

"1"

Leuze electronic DDLS 170 11

Remote multifunction LED / bar graph

Data transmission LED

(red)

LED
(yellow)

Bar graph
(LED bar)

none (no optical connection) off off 0 - 1 (red)
none (optical connection) blinking off 2 - 4 (red)
critical on off 5 + 6 (green)
good

(with sufficient functional reserve)

off on 7 - 10 (green)

Fig. 4: Display of reception quality

Transmit / Receive

By means of an LED, each DDLS 170 indicates whether it is transmitting and/or re­ceiving data at the moment:

LED (1) red - Transmit data
LED (2) green - Receive data
LED (1) and (2) simultaneously - Data are being transmitted and received

Fig. 5: Transmit / receive indicator

LED (red)
LED (yellow)
Terminal 9 with functional reserve
Terminal 8 without functional reserve

1

2

3

4

5

6

7

8

9

10

Bar graph

12 DDLS 170 Leuze electronic

3.7 Application examples

Area of application

Die DDLS 170 optical data transmission units are used wherever transmission devi­ces using different systems are more elaborate, complicated, susceptible to interfe­rence, and expensive to operate and maintain.

Optical data transmission units replace e.g.:

·

Collector wires

·

Trailing cables

·

Radio connections

When used in mobile applications, the travel speed and acceleration do not influen­ce the transmission quality of the data.

In the application of optical data transmission, a distinction is made between

·

Coupling to bus systems

·

Point-to-point connections

3.7.1 Examples of use (in principle)

One data path - horizontal

For example, for controlling transport trucks

Fig. 6: Transport truck

Two data paths - horizontal

Fig. 7: Two transport trucks running run after the other

When arranging several transmission paths one after the other, the transmission
frequencies must be alternated in order to prevent mutual interference (see Fig. 7).

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

Leuze electronic DDLS 170 13

One data path - vertical

Fig. 8: High-bay warehouse - one data path

Two data paths - vertical and horizontal

For example, data transmission in a high-bay warehouse with several moving axes
and several data transmission paths is possible:
horizontal (movement in the aisle) and vertical (raising/lowing).

Fig. 9: High-bay warehouse - two data paths

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

Bus

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

14 DDLS 170 Leuze electronic

3.7.2 INTERBUS

All bus elements that meet the INTERBUS standard can be connected:

·

Order designation: DDLS 170/120.1-2110 and DDLS 170/120.2-2110 (120 m)

DDLS 170/200.1-2110 and DDLS 170/200.2-2110 (200 m)

·

Interface: INTERBUS interface IM170-2000 (built into unit)

·

Transmission rate: 500 kbit/s

·

Full-duplex operation: transmit and receive data simultaneously

Examples:

·

Transmission of control parameters, desired / actual values from the master to
the node and vice versa

·

Vehicle control in a stationary switch cabinet. Communication with DRIVECOM
and ENCOM components via DDLS 170

Fig. 10: DDLS in INTERBUS

Connection
assemblies
for PLC or
computer

Bus terminals
in remote bus

I/O modules

Compatible
devices from
other
manufacturers

I/O modules

1

2

1 DDLS 170 in remote bus
2 DDLS 170 in installation remote bus

Leuze electronic DDLS 170 15

3.7.3 RS422 Point-to-point connection

RS422 4-wire connection

·

Order designation: DDLS 170/120.1-2110 and DDLS 170/120.2-2110 (120 m)

DDLS 170/200.1-2110 and DDLS 170/200.2-2110 (200 m)

·

Interface: RS422 interface IM170-2000 (built into unit)

·

Transmission rate: infinitely variable up to max. 500 kbit/s, no adjustment necess.

·

Full-duplex operation: transmit and receive data simultaneously

Example of use

·

Use on transport vehicles/sidetracking skates
e.g. control of trucks and cranes

Fig. 11: Truc k

Additiona l possibiliti e s

·

e.g. transmission of scale data to a printer or display, on-line connection be­tween operating data acquisition and computer

Fig. 12: Mobile crane system

DDLS 170/xxx.1-2110

DDLS 170/xxx.2-2110

RS422

RS422

Max. 400 m

DDLS 170

RS422

RS422

16 DDLS 170 Leuze electronic

3.7.4 Profibus, MPI, FMS, DP, mixed operation (FMS/DP)

·

Order designation: DDLS 170/120.1-1110 and DDLS 170/120.2-1110 (120 m)

DDLS 170/200.1-1110 and DDLS 170/200.2-1110 (200 m)

·

Interface: Profibus interface IM170-1000 (built into unit)

·

Transmission rate: 9.6 kbit/s, 19.2 kbit/s, 38.4 kbit/s, 57.6 kbit/s, 93.75 kbit/s,

187.5 kbit/s, 375 kbit/s, 500 kbit/s (adjustable)

·

Semi-duplex oper.: only serial transmission and reception of data possible

A high-performance, optical data transmission system is available with the
DDLS 170 with which the following Profibus protocols can be transmitted:

·

MPI Multi Point Interface (187.5 kbit/s)

·

FMS Field Message System (in accord. with DIN 19245 Parts 1,2)

·

DP Decentralized periphery (in accord. with DIN 19245 Part 3)

·

FMS/DP Mixed operation (in accordance with DIN 19245)

Performance features

·

All masters and/or slaves that meet the Profibus standard can be connected.

·

If the signal received by the data transmission unit receiver is inadequate, the
transmitted and received data are switched off.
In this way, undefined bus conditions occurring as the result of one-sided system
accesses are prevented.

Signal regeneration

Fig. 13: Direct series connection

Leuze electronic DDLS 170 17

·

Repeater function; signal regeneration increases the possible line lengths and
number of nodes in the system.

·

Several optical data transmission paths can be connected in series. In this way it
is, for example, possible to transmit data between several high-bay storage and
retrieval units in one storage aisle (see Fig. 13).

·

Trouble-free data transmission with Profibus FMS systems in Multi-Master confi­guration. In this way it is, for example, possible to establish direct data communi­cation between several high-bay storage and retrieval units located in different
storage aisles (indirect series connection, see Fig. 14).

Fig. 14: Indirect series connection

Selector switch during loss of visual contact

Located on the Profibus module next to the DIP switches for baud rate adjustment
(1, 2 and 3) is an additional DIP switch (4) which controls the behavior of the data
transmission units in the event of loss of visual contact (see Chapter 7.3 "Settings
on the Profibus interface module").
If DIP-switch 4 (switch position = 1) is activated and visual contact is lost, it can, for
example on high-bay storage and retrieval units, prevent the formation of a token
on the vehicle.
Compared with the standard setting (switch position = 0), this has the advantage
that, upon re-establishment of visual contact, the system is again stable within a
few milliseconds (see Fig. 15, next page).

18 DDLS 170 Leuze electronic

Attention !

Switch 4 must not be activated if a Profibus system consisting of 2 or more nodes
is installed on the other side of the data transmission units. Bus communication
between the nodes would otherwise suffer interference.

Functionality of switch 4

0 The data lines are switched to high impedance (Tristate) when visual contact
is lost. Tristate is the standard application case.

The system behaves as it would in the event of a line interruption.

1 If the transmission path is interrupted, bus occupation is simulated until visual

contact is re-established. Normal exchange of data then resumes. In this way,
token regeneration on one of the interrupted nodes is prevented.

Advantages

·

Shorter bus access times for Profibus systems in Multi-Master configuration
once visual contact has been re-established.
For example, when moving high-bay storage and retrieval units from one aisle to
another, the interruption routine is carried out faster, thereby reducing the time
required to make the entire system available after activating the switch.

Fig. 15: Selector switch during loss of visual contact

Leuze electronic DDLS 170 19

Examples:

·

Field Message System (FMS)
Transmission of FMS Master to FMS Slave (e.g. CP 5412, PG 750, PC)

·

Decentralized periphery
Transmission from DP Master (e.g. CP 5412, IM 308B) to DP slave (e.g.
ET 200, IM 318M).

3.7.5 Suconet K

·

Order designation: DDLS 170/120.1-1110 and DDLS 170/120.2-1110 (120 m)

DDLS 170/200.1-1110 and DDLS 170/200.2-1110 (200 m)

·

Interface: RS485 interface IM170-1000 (built into unit)

·

Transmission rate: Succonet K, K1 and K2 with 187.5 kbit/s,

Suconet K with 375 kbit/s

·

Semi-duplex oper.: Only serial transmission and reception of data

With the DDLS 170 the following protocols from Klöckner Möller can be transmitted:

·

Succonet K, K1 and K2

20 DDLS 170 Leuze electronic

3.7.6 Connection variants for Profibus (MPI, FMS, DP) and Suconet K

Fig. 16: Profibus (MPI / SINEC L2 - FMS / SINEC L2 - DP) and Suconet K

Fig. 17: Connection variant for I/O components

Control Control

PG

Field

device

Slave

Slave

Spur line

Connection with bus line by

means of corresponding bus

terminal

DDLS 170/xxx.1-1110

DDLS 170/xxx.2-1110

DDLS 170/xxx.1-1110

DDLS 170/xxx.1-1110

DDLS 170/xxx.1-1110

DDLS 170/xxx.2-1110

DDLS 170/xxx.2-1110

DDLS 170/xxx.2-1110

Connected through

The connection terminals for
the data line are arranged in

dupliate, allowing forwarding of

the data line in the DDLS 170.

e.g.

I/O

ET 200x

optical

inductive

pneumatic

mobile

capacitiveoptical

stationary

CP5412
IM308B

DP-Master

DDLS 170/xxx.1-1110 DDLS 170/xxx.2-1110

Leuze electronic DDLS 170 21

4 Specifications

4.1 General specifications

Manufacturer Leuze electronic GmbH & Co., D-73277 Owen/Teck
Type DDLS 170

Range 0 to 120 m;

Type designation DDLS 170/120.x-xxxx

0 to 200 m;

Type designation DDLS 170/200.x-xxxx
(... x-xxxx depending on carrier frequency and
interface module). The listed range is the usable
range with adequate functional reserve.

Transmission rate DC - 500 kbit/s
Interfaces Modular slot in the connection element

1) INTERBUS interface

2) Profibus interface (MPI, FMS, DP)

3) Suconet K interface (K, K1, K2)

Power supply

(Terminals 10, 11)

Operating voltage (UB) 12 to 30 VDC filtered
Residual ripple

£

15 %
Current consumption max. 420 mA (with interface module)
Electr. connection 11-pole terminal str ip

Display

Remote multifunction display LEDs with lenses
Close-up multifunction display Bar graph for reception level (10 LEDs)

2 LEDs for data transmission

Inputs

(Terminal 4)

Transmitter deacativation Tx DIS
Input signal + U

B

transmitter inactive < 0.7 V transmitter active

(Terminal 5)

Receiver deactivation Rx DIS
Input signal + U

B

receiver inactive < 0.7 V receiver active

Outputs

(Terminal 8)

Reception without
functional reserve PNP, plus switching U

B

- 2 V

(Terminal 9)

Reception with
functional reserve PNP, plus switching U

B

- 2 V

Output load max. 200 mA
Safety wiring against overcurrent and transients

Mechanical data

Housing Aluminum
Protection class IP 65
Weight 1525 g

22 DDLS 170 Leuze electronic

Lenses

Transmission medium Modulated infrared light
Lenses Glass
Optical beam angle approx. ± 0.5° to the optical axis

Environmental conditions
Operating temperature -30 °C ... +60 °C
Storage temperature -35 °C ... +70 °C

4.2 Dimensioned drawing

Fig. 18: Dimensioned drawing of DDLS 170

optical axis 114

level indicator

optical axis 48

Leuze electronic DDLS 170 23

5 Accessories / Order Designations

Addresses for ordering

Products manufactured by Leuze electronic GmbH + Co. can be ordered from any
of the distributor and service addresses listed on the reverse of the envelope.

Optical data transmission system
DDLS 170/xxx.x-xxxx, order designation:

Explanation of the

order designation

The order designation for the DDLS 170 is structured according to the following
scheme:

DDLS 170/ A.-B-CDEF

The letters A through F represent the following device variants:

·

A range /120 = 120 m range

/200 = 200 m range

·

B FSK frequencies .1 = carrier frequency pair 1

.2 = carrier frequency pair 2

·

C interface 0 = no interface

1 = Profibus, Suconet K, RS485
2 = INTERBUS, RS422

·

D beam angle 0 = without optics unit

1 = ± 0.5°

·

E conn. element 0 = without connection element

1 = Profibus/Suconet K/INTERBUS connection element

·

F optics heating 0 = without optics heating

1 = reserved
2 = with optics heating

Notice:

The DDLS 170 is offered primarily as a complete unit. This means that the order
designations denote complete units, and delivery includes connection element, in­terface module and optics unit.

Two complete units with di fferent FSK frequencies (.1 and .2) must be ordered
for each transmission path.

In addition, we offer the three components: connection element, interface module
and optics unit individually for service and spare parts needs.

24 DDLS 170 Leuze electronic

Order examples for complete units

Order designations

DDLS 170/120.1-1110 1 transmission pair, 120 m range,
DDLS 170/120.2-1110 Profibus, RS485, Suconet K, ± 0.5° beam angle

DDLS 170/120.1-2110 1 transmission pair, 120 m range,
DDLS 170/120.2-2110 INTERBUS, RS422, ± 0.5° beam angle

DDLS 170/200.1-1110 1 transmission pair, 200 m range,
DDLS 170/200.2-1110 Profibus, RS485, Suconet K, ± 0.5° beam angle

DDLS 170/200.1-2110 1 transmission pair, 200 m range,
DDLS 170/200.2-2110 INTERBUS, RS422, ± 0.5° beam angle

Fig. 19: complete DDLS 170 unit

5.1 Individual components

The following components can also be ordered individually for service and spare
part needs:

Connection element

AT170-0010 Connection element with wobble plate for

Profibus/Suconet K/INTERBUS

Interface modules

IM170-1000 Interface module for Profibus, RS485, Suconet K
IM170-2000 Interface module for INTERBUS, RS422

Optics units

OA170/120.1-0100 Optics unit 120 m
OA170/120.2-0100 Optics unit 120 m
OA170/200.1-0100 Optics unit 200 m
OA170/200.2-0100 Optics unit 200 m

A complete unit can be assembled from connection element, interface module and
optics unit.

Leuze electronic DDLS 170 25

5.2 Recommend ed cab le

Profibus, RS485, Suconet K

No special connection cables are necessary for the installation of the DDLS 170
supply and control lines. The Profibus standard specifies two cable types for the
connection of the data lines into the FMS and DP systems.

Cable type A is particularly suited for high transmission rates and long ranges. Ca­ble type B should be used only with short ranges and transmission rates up to 500
kbit/s.

Cable type A Cable type B

Intrinsic impedance

135...165 W
(at 3...20 MHz)

130...135

W

(at f > 100 kHz)
Cable capacitance < 30 pF / m typ. < 30 pF / m
Wire cross sec tion min. 0.34 mm

2

min. 0.22 mm

2

Cable type twisted pairs, 1x2; 2x2;

or 1x4 conductor

twisted pairs, 1x2; 2x2;

or 1x4 conductor
Resistance

< 110 W / km < 110 W / km

Signal loss max. 9 dB over entire

line length

max. 9 dB over entire

line length
Shielding copper-mesh shielding

or mesh shielding and
foil shielding

copper-mesh shielding

or mesh shielding and

foil shielding

INTERBUS, RS422

Cables with the following specifications are recommended for use in the INTER­BUS system:

Designation LI-YCY ...
Type 4-conductor, twisted pair
Wire cross section 0.14 mm

2

Resistance

< 140 W / km

Insulation resistance of
the wires

min. 200 MW / km

Mutual capacitance max. 120 nF / km
Test volt. wire / wire 1200 V
Test volt. wire / shielding 1200 V
Shielding copper-mesh shielding or

mesh shielding and foil shielding

26 DDLS 170 Leuze electronic

6 Installation

6.1 Storing, transporting

Attention !

When transporting, package the device so that it is protected against collision and
humidity. Optimal protection is achieved when using the original packaging. Heed
the required environmental conditions specified in the technical data.

Unpacking

➜ Check the packaging for any damage. If damage is found, notify the post of-

fice or shipping agent as well as the supplier.

➜ Check the delivery contents against your order and the delivery papers:

·

delivered quantity

·

device type and model as indicated on the name-plate

·

accessories

·

operating manual(s)

➜ Save the original packaging in case the device must be stored or shipped at a

later time.

Should you have questions, please contact your distributor or the responsible Leu­ze electronic sales office (see reverse of this operating manual).

➜ Observe the locally applicable regulations when disposing of the packaging

materials.

Cleaning

➜ Before installing, clean the DDLS 170 lenses with a soft cloth. Remove all

packaging remains, e.g. carton fibres or styrofoam balls.

Attention !

Do not use an aggressive cleaning material such as thinner or acetone to clean the
device.

Leuze electronic DDLS 170 27

6.2 Mounting and aligning

6.2.1 Preparation

Observe the following points before installing the data transmission unit:

·

For each data transmission path one device of type
DDLS 170/xxx. -xxx and one of type DDLS 170/xxx. -xxxx is required.

·

The data transmission path can be oriented either horizontally or vertically.

·

For trouble-free data transmission, ensure

- unimpeded optical connection between transmitter and receiver

- precise alignment

- clean lenses

·

Parallel operation of several data transmission paths:
When arranged with shifted frequencies, two parallel data paths can be operated
with a separation 0.3 m (see Fig. 20).
The parallel distance to a third transmission path can be calculated as follows:
parallel distance = 0.025 x range (however, at least 2.5 m)

Fig. 20: Multiple data transmission paths

1

2

positioned one behind the other

DDLS 170/xxx.1-xxxxDDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx DDLS 170/xxx.2-xxxx

parallel

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

DDLS 170/xxx.1-xxxx

DDLS 170/xxx.2-xxxx

no influence

no influence

min. 0,3 m

28 DDLS 170 Leuze electronic

6.2.2 Installation

When preparing the installation sites, ensure that no vertical, lateral and angular
offsets can develop between the two units.

➜ Drill fastening holes for the two adjusting brackets (1). For hole dimensions,

see the dimensioned drawing in Chapter 4.2.

➜ Fasten adjusting brackets (1).
➜ Attach DDLS 170/xxx.1-xxxx and DDLS 170/xxx.2-xxxx to the adjusting

brackets and secure with the hex socket-head screws (2).

Fig. 21: Mounting DDLS 170

Leuze electronic DDLS 170 29

6.2.3 Alignment

Each DDLS 170 is equipped with two multifunction displays which can be used to
simplify the alignment process:

·

Remote multifunction display for coarse adjustment,

·

Close-up multifunction display (bar graph) for fine adjustment.

Coarse adjustment

DDLS 170/xxx.1-xxxx transmits a signal to the DDLS 170/xxx.2-xxxx. The LED indi­cates the quality of the received signal. When adjusting the DDLS 170/xxx.1-xxxx,
observe the LED on the DDLS 170/xxx.2-xxxx (and vice versa).

➜ Align the DDLS 170/xxx.1-xxxx with the unsprung screws (2) on the adjusting

bracket (8 mm open-end wrench) until the remote multifunction display (1) on
the DDLS 170/xxx.2-xxxx lights up yellow.

Fig. 22: DDLS 170 coarse adjustment

Check: The remote multifunction LED displays on both units must light up yellow

for the entire path.

30 DDLS 170 Leuze electronic

Fine adjustment

DDLS 170/xxx.1-xxxx transmits a signal to the DDLS 170/xxx.2-xxxx and vice ver­sa. The bar graph indicates the quality of the received signal. When adjusting the
DDLS 170/xxx.1-xxxx, observe the bar graph on the DDLS 170/xxx.2-xxxx.

The greater the distance between two DDLS 170, the weaker the receiving level.
As a result, the bar graph will not reach its maximum level as the distance is increa­sed.
The maximum range which can be indicated by the bar graph is approx. 20 m.

➜ Align DDLS 170/xxx.1-xxxx with the sprung screws (1) on the adjusting

bracket (8 mm open-end wrench) until the maximum number of LEDs for this
range light up on the bar graph.

➜ Align DDLS 170/xxx.2-xxxx in the same way as DDLS 170/xxx.1-xxxx.

Fig. 23: Fine adjustment of DDLS 170

Alignment monitoring (functional reserve)

To monitor the aligned DDLS 170 with the aid of a PLC, use the output terminals 9
(with reserve) and 8 (without reserve), or test the LEDs on the unit (remote and clo­se-up multifunction displays) at regular intervals (see Chapter 3.6, page 12).

Leuze electronic DDLS 170 31

6.3 Connection information

Attention !

The unit must only be connected by a qualified electrician.
If faults cannot be eliminated, the device should be removed from operation and

protected against possible use.
Before connecting the device, be sure that the supply voltage is in agreement with

the value printed on the name plate.

Be sure that the earthing conductor is correctly connected. Error-free
operation is guaranteed only when the device is properly earthed.

Preparing bus lines

➜ Prepare the cables for the lead and continuation of the bus line as described

in Fig. 24. Guide the cables through the appropriate PG cable glands and
make the connection.

Shielding clamps

➜ Ensure that the bus cable shielding is connected at both ends and the clamps

for the shielding are tightened.

Strain relief

➜ For strain relief, finish by tightening the PG cable glands.

Fig. 24: Bus cable preparation and shielding connection

~25

~103

Circuit board

➀

➂

➁

➀ Strip approx. 25 mm of the cable

covering and shorten the mesh shielding
by 17 mm.
Strip 3 mm from the ends of the individual
wires.

➁ Fold the mesh shielding uniformly back

onto the cable covering.

➂ Clamp the shielding under the cable

clamp (conductive connection with the
housing).

32 DDLS 170 Leuze electronic

6.4 INTERBUS connection

6.4.1 Shielding

Attention !

Inadequate shielding can lead to operating errors. Therefore, observe the following
points.

Data line shielding

·

Connect shielding as shown in Fig. 25.

·

Lay the shielding at both ends.

·

Secure the shielding on the entire surface.

·

Do not damage or squeeze any wires.

·

Ensure that the shielding covers as much of the individual wires as possible in
the unit.

Fig. 25: DDLS 170 - INTERBUS shielding

C=
47nF

Connection assembly

Bus terminal

DDLS 170

I/O module I/O module

The shielding connection for all INTERBUS
devices always alternates between a direct PE connection
and a PE connec tion made by means of a 47 nF capacitor.

The capacitor is active when the jumper in the device next
to the terminal block is removed (see Fig. 26).

Leuze electronic DDLS 170 33

6.4.2 Terminal configuration for INTERBUS, RS422 - connection terminals

·

Connect the earthing line (PE) to the screw terminal provided for this purpose in
the unit.

·

Connect supply voltage in accordance with the specifications (see Chapter 4).

Fig. 26: INTERBUS, RS422 terminal configuration
Connection description

Terminal 1

DI Data line INTERBUS - System / TxD for RS422 interface

Terminal 2

DO Data line INTERBUS - System / RxD for RS422 interface

Terminal 3 COM connection for data line - GND
Terminal 4 Tx DIS transmitter deactivation (+ U

B

transmitter inactive;

< 0.7 V transmitter active)

Terminal 5 Rx DIS receiver deactivation (+ U

B

receiver inactive;

< 0.7 V receiver active)

Terminal 6 DI data line INTERBUS - System / TxD for RS422 interface
Terminal 7 DO data line INTERBUS - System / RxD for RS422 interface
Terminal 8 Data transmission without functional reserve
Terminal 9 Data transmission with functional reserv e
Terminal 10 GND voltage supply 0 V
Terminal 11 + U

B

voltage supply 12 to 30 V DC

1 2 3 4 5 6 7 8 9 10 11

DO (RxD)

COM

DI (TxD)

Tx DIS

GND

Plug-in bridge removed:
Shielding connected to PE by
means of a 47 nF capacitor.

Rx DIS

DO (RxD)

DI (TxD)

without reserve

with reserve

+ U

B

Pull back shielding over cable covering
and clamp uniformly under cable clamp
(see Fig. 24).

PE

34 DDLS 170 Leuze electronic

6.4.3 C onnection examples

INTERBUS

Fig. 27: Connection example DDLS 170 - INTERBUS

RS422 point-to-point connectio n

Fig. 28: Connection example DDLS 170 - RS422

GND GND

7
6
3
2
1

6
7
3
1
2

11 11

+ U

B

+ U

B

PC/MASTER or

bus terminal

10

DO
DI

COM
DO
DI

10

1
2
3
6
7

yellow

grey

brown

green

pink

yellow

grey

brown

green

pink

DO
DI

COM
DO
DI

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

Bus terminal /

node

DI
DO

COM
DI
DO

DO
DI

COM
DO
DI

1
2
3
6
7

TxD+
TxD–
RxD+
RxD–

GND

RxD+
RxD–

TxD+

TxD–

GND

7
2
6
1
10

6
1
7
2

10

RS422

RxD
RxD

TxD
TxD

11 11

+ U

B

+ U

B

RS422

PLCPLC

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

TxD
TxD
RxD
RxD

Leuze electronic DDLS 170 35

6.5 Profibu s, Suco net K connec tio n

6.5.1 Terminal configuration for Profibus- (MPI, FMS, DP, FMS/DP), RS485­and Suconet K - connection terminals

Fig. 29: Profibus, RS485 and Suconet K terminal configuration
Connection description
Terminal 1 B data line Profibus, RS485 (+TxD/RxD), Suconet K - System

Terminal 2 A data line Profibus, RS485 (-TxD/RxD), Suconet K - System
Terminal 3 COM connection for data line - GND
Terminal 4 Tx DIS transmitter deactivation (+ U

B

transmitter inactive;

< 0.7 V transmitter active)

Terminal 5 Rx DIS receiver deactivation (+ U

B

receiver inactive;

< 0.7 V receiver active)

Terminal 6 B’ data line Profibus, RS485 (+TxD/RxD), Suconet K - System
Terminal 7 A’ data line Profibus, RS485 (-TxD/RxD), Suconet K - System
Terminal 8 Data transmission without functional reserve
Terminal 9 Data transmission with functional reserv e
Terminal 10 GND voltage supply 0V
Terminal 11 + U

B

voltage supply 12 to 30 V DC

1 2 3 4 5 6 7 8 9 10 11

A (-TxD/RxD)

COM

B (+TxD/RxD)

Tx DIS

GND

Rx DIS

A' (-TxD/RxD)

B' (+TxD/RxD)

without reserve

with reserve

+ U

B

Plug-in bridge must
not be removed.

Pull back shielding over cable covering
and clamp uniformly under cable clamp
(see Fig. 24).

PE

B - B', A - A' bridged internally

36 DDLS 170 Leuze electronic

6.5.2 C onnection examples

DDLS 170 - Profibus connection

Fig. 30: Connection example DDLS 170 - Profibus (MPI, FMS, DP, FMS/DP)

DDLS 170 - Suconet K, K1 and K2 connection

Fig. 31: Connection example DDLS 170 - Suconet K, K1 and K2

A
B

Master

e.g.
bus terminal

GND GND

10

10

11

11

+ U

B

+ U

B

Slave

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

2 A
1 B
7 A'
6 B'

A
B

A 2
B 1

GND GND

10 10

11

11

+ U

B

+ U

B

Slave

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

2 A

1 B

A
B

A 2
B 1

A (4)

B (1)

GND

GND

10

10

11

11

+ U

B

+ U

B

Slave

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

2 A
1 B

7 A'
6 B'

(1) B
(4) A

A 2
B 1

GND GND

10 10

11

11

+ U

B

+ U

B

Slave

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

2 A

1 B

A 2
B 1

COM

Master

COM

(1) B
(4) A

Note:

Data line B (Master) to A (data transmission unit) and reverse;
the same with slave connection.

Leuze electronic DDLS 170 37

DDLS 170 - RS485 connection

Fig. 32: Connection example DDLS 170 - RS485

GND

GND

10

10

11

11

+ U

B

+ U

B

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

GND GND

10 10

11

11

+ U

B

+ U

B

DDLS 170/120...
DDLS 170/200...

DDLS 170/120...
DDLS 170/200...

+TxD/RxD

-TxD/RxD

1 +TxD/RxD

2 -TxD/RxD

6 +TxD/RxD

7 -TxD/RxD

+TxD/RxD

-TxD/RxD

+TxD/RxD

-TxD/RxD

1 +TxD/RxD

2 -TxD/RxD

+TxD/RxD 1

-TxD/RxD 2

+TxD/RxD 1

-TxD/RxD 2

38 DDLS 170 Leuze electronic

7 Commissioning

7.1 Steps before the first commissioning

➜ Prior to the first commissioning, familiarise yourself with the operation and ad-

justment of the device(s)!

➜ Before switching on, recheck all connections and ensure that they have been

properly made.

7.1.1 Switching on the operating voltage

Before you switch on the operating voltage, be certain that the unit has been pro­perly connected and that the polarities of the data-signal and supply lines are cor­rect.

☞ See Chapter 6.3 and the following

After switching on the operating voltage, the DDLS 170 is immediately ready for
data transmission.

7.1.2 Alignment

➜ Align the units with one another as described in Chapter 6.2.3.

7.2 Settings on the INTERBUS interface module

Notice:

No settings are necessary.
The data transmission unit functions as a passive node; a system address is not

necessary.

➜ Activating system control

Data paths with appropriate nodes are automatically registered in the system.

Leuze electronic DDLS 170 39

7.3 Settings on the Profibus-, RS485- and Suconet K­interface module

Fig. 33: Settings on the interface module

7.3.1 Setting the transmission rate (switch 1)

Set the desired transmission rate with DIP switches 1, 2, 3 on the connection
circuit board (switch 1) (see Fig. 33).

Notice:

All listed baud rates are available for Profibus protocols FMS, DP, FMS/DP as well
as for RS485.

The RS485 MPI protocol functions only at a transmission rate of 187.5 kbit/s.
The possible transmission rates for Suconet K are 187.5 and 375 kbit/s, for Suco-

net K1 and K2 only the transmission rate of 187.5 kbit/s is permitted.

DIP switches 1,2,3 Transmission rates in kbit/s

000 9.60
100 19.20
010 38.40
011 57.60
110 93.75
001 187.50
101 375.00
111 500.00

Thus, in the example a transmission rate of 375
kbit/s is selected.

40 DDLS 170 Leuze electronic

7.3.2 Bus interruption (switch 1)

Bus interruption DIP switch 4 can be set to define how the data transmission unit
should behave in the event of loss of visual contact (see Chapter 3.7.4, page 19).

Set DIP switch 4 on the connection circuit board (switch 1) in accordance with your
requirements (see Fig. 33).

Attention !

For operation with Suconet K and the RS485 MPI protocol, the bus
interruption switch must be deactivated (switch position 0).
If a Profibus system consisting of 2 or more nodes is located on the other side of
the data transmission unit, the bus interruption switch must also be deactivated.

DIP switch 4 Bus interruption

0 No output to the bus if visual

contact is lost : Tristate­condition; behaves as in
the case of line interruption.

1 If visual contact is lost bus

occupation is simulated until
visual contact with the
data transmission units is
re-established.

The setting for simulated bus access is shown in
the example for the case of visual contact loss.

7.3.3 Termination (switch 2)

A terminating resistor must be connected at both ends of a bus segment line. If the
data transmission unit is the last node of a bus segment, the terminating resistor
must be activated.

Use switch 2 of the connection circuit board to set the terminating resistances on
DIP switches 1, 2 in accordance with your requirements (see Fig. 33).

Attention !

Termination must not take place within a bus segment!
Both switches must be either on 1 or on 0.

DIP switch 1, 2 Termination

00 Switch position terminated
11 Switch position not terminated

In the example, no termination is set.

Notice:

Should problems occur during commissioning or if the data transmission path can­not be put into service, refer to Chapter 8, "Error Diagnosis".

Leuze electronic DDLS 170 41

8 Error Diagnosis / Failures and Troubleshooting

General:
The DDLS 170 fulfills the conformity requirements for:

·

Profibus

·

INTERBUS

·

Suconet K

Should errors occur during operation or during commissioning, the DDLS 170 of­fers a wide range of localization and correction options.

8.1 Errors durin g commi ssio ni ng

Voltage supply

polarities correct?

Error Cause Correction

Device does not respond
(no LEDs light up)

supply voltage polarity
false, possible line
interruption or loose
contacts on terminal
blocks!

Connect supply voltage
correctly, check lines
and terminal blocks

Coarse adjustment

carried out?

Error Cause Correction

Red LED on the remote
multifunction display
blinks

Strength of received
signal insufficient!
Notice: the yellow LED
must light up over the
entire travel area at the
lens end.

Realign the device
(see Chapter 6.2.3)

Fine adjustment

carefully carried o ut?

Error Cause Correction

Less than two green
LEDs light up on the
close-up multifunction
display

Strength of received
signal insufficient!
Notice: As a minimum
the LEDs 1-4 (red) and
LEDs 5-6 (green) must
light up over the entire
travel area

Realign the device
(see Chapter 6.2.3)

42 DDLS 170 Leuze electronic

Data transmission

lines A and B connected

correctly?

Error Cause Correction

No data exchange
possible, only one of the
control LEDs (red =
transmit
green = receive) on the
side of the device lights
up

Lines exchanged, or
loose contacts on the
device terminal blocks!

Is the baud rate (Profibus)

set correctly for a ll

devices?

Error Cause Correction

Transmission error The baud rates are

either set falsely or not
at all!
Notice: If no baud rate
is activated, the levels of
the data signal shift.

Check the DIP switch
settings on all devices,
(see Chapter 7.3)
Notice: Line length for

9.6 - 93.75 kbit/s up to

1.2 km,

187.5 kbit/s up to 600 m,
500 kbit/s up to 200 m

Are the terminating

resistors correctly switched?

(Profibus only)

Error Cause Correction

Transmission error The terminating

resistors are incorrectly
switched!
Notice: Devices must
only be terminated at
the beginning and end
of a line!

Check DIP switch
settings on all devices,
DIP switches must both
either be set to 0 or to 1
(see Chapter 7.3)
Notice: if necessary
measure the line
terminations directly in
the bus line (switch off
mains). If the
termination is
considerably less than
110 Ohm, the data
signal level deteriorates,
harmonics are possibly
occurring on the B-line
at 0 signal.

Leuze electronic DDLS 170 43

Influence due to

"cross talking"?

Error Cause Correction

Transmission error Influence resulting from

data transmission paths
arranged adjacent to or
one behind the other!

Check the minimum
distance of the data
transmission paths and
ensure that paths are
arranged with offset
frequencies
(see Chapter 6.2.1)

Is the shielding

faulty (INTERBUS)?

Error Cause Correction

Transmission error Earthing line not

connected!

Not all of the system’s
earthing lines are at the
same potential,
compensating currents
are flowing!

Check earthing-line
connections and
shielding
(see Chapter 6.4.1)

Are you using

the correct cable?

Error Cause Correction

Transmission error The cables have the

wrong intrinsic
impedance!

The cable must be
selected with respect to
the baud rate
(see Chapter 5.2).

Have you installed the bus

cable correctly?

Error Cause Correction

Transmission error You have installed stub

lines in your system!

The bus cable must be
passed from one node
to the next using serial
connections

8.2 Other errors

Interference fields

Ensure that no strong electromagnetic fields are located in the immediate vicinity of
the devices!

Light axes

The light axes must not be interrupted at any point in time!

44 DDLS 170 Leuze electronic

9 Maintenance

9.1 General maintenance information

In normal use, the DDLS 170 optical data transmission system requires no opera­tor servicing.

Cleaning

➜ Should the DDLS 170 lenses become dirty, clean with a soft cloth.

Attention !

Do not use an aggressive cleaning material such as thinner or acetone to clean the
device.

9.2 Repair, Maintenance

Repairs to the devices must only be carried out by the manufacturer.

☞ Contact your Leuze distributor or service organization should repairs be requi-

red. The addresses are listed on the reverse of this description.

Leuze electronic DDLS 170 45

46 DDLS 170 Leuze electronic

Appendix
(applies only to DDLS 170.1 and DDLS 170.2)

Leuze electronic DDLS 170 47

AConstruction

The data transmission units of the DDLS 170 series are durable, user-friendly and
easy to service.

A data path consists of two synchronized data transmission units: DDLS 170.1 and
DDLS 170.2.

The DDLS 170 is modular is design:
1 Main unit DDLS 170.1

2 Main unit DDLS 170.2
3 Connection unit with adjusting bracket and slot for interfaces
4 Interface module

Fig. Appendix 1 : DDLS 170 components

21

3 4

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

48 DDLS 170 Leuze electronic

Components of the data transmission unit are:

1 Mounting bracket
2 Adjusting screws (2)
3 Connection module
4 Interface module
5 Alignment indicator
6 Bi-dir ectional trans mi tt er
7 Fastening screws (2)
8 Remote multifunction LED display: Multif unction dis play , red, red blinking
9 Remote multifunction LED display: Multif unction dis play , yellow
10 Receiver
11 Close-up multifunction display; Bar graph for reception level (10 LEDs)
12 Interface monitor; LED red - transmit data
13 Interface monitor; LED green - receive data
14 Terminal strip
15 PG cable glands

right: Signal lines and voltage supply
left: Data lines (PG cable glands with dual cable entries)

Fig. Appendix 2 : Components of the DDLS 170

2
3
4

6

7
8

10

1

131211 14

5

9

15

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 49

B Specifications

B.1 General specifications

Manufacturer Leuze electronic GmbH + Co., D-73277 Owen/Teck
Type DDLS 170
Range 0 to 200 m; The listed range is the usable

operating range with adequate functional reserve
Transmission rate DC - 500 kBit/s
Interfaces Modular slot in bottom section of the strip (AT 170)

1) INTERBUS

2) Profibus/SINEC L2 plug-in module

Power supply

Operating voltage 12 to 30 VDC filtered
Residual ripple

£

15 %
Current consumption max. 420 mA (with interface module)
Electr. connection 12-pole terminal str ip

Display

Remote multifunction display LEDs with lenses
Close-up multifunction display Bar graph for reception level (10 LEDs)

2 LEDs for data transmission

Inputs

Receiver deactivation Rx DIS (9)
Input signal + U

B

receiver inactive, < 0.7 V receiver active

Outputs

(Terminal 7)

Reception without functional PNP, plus switching; UB - 2 V at the corresponding
reserve reception level

(Terminal 6)

Reception with PNP, plus switching; UB - 2 V at the corresponding
functional reserve reception level

Output load max. 200 mA
Safety wiring against overcurrent and transients

Mechanical data

Housing Aluminum
Protection class IP 65

Lenses

Transmission medium Modulated infrared light
Lens Glass, behind glass covers
Optical beam angle approx. ± 0.5° to the optical axis

Environme ntal conditions

Operating temperature -30 °C ... +60 °C
Storage temperature -35 °C ... +70 °C

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

50 DDLS 170 Leuze electronic

B.2 Dimensioned drawing

Fig. Appendix 3 : Dimensioned drawing DDLS 170

optical axis 114

optical axis 48

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 51

B.3 Terminal configuration of interfaces

B.3.1 INTERBUS terminal configuration

Fig. Appendix 4 : INTERBUS terminal configuration

B.3.2 Profibus terminal configuration

Fig. Appendix 5 : Profibus terminal configuration

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

DO DO COM DI DI

GND GND

with without

reserve

RX

DISTXEN

+UB

12…
30V

47nF

PE

PE

INTERBUS

Plug-in bridge removed:
Shielding connected to PE by
means of 47 nF capacitor.

shielding

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

B B' COM

GND GND

with without

reserve

RX

DISTXEN

+UB

12…
30V

PE

PE

AA'

P

N

shielding

47nF

Plug-in bridge must not
be removed

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

52 DDLS 170 Leuze electronic

C Examples of connection

C.1 DDLS 170 – INTERBUS connection

Fig. Appendix 6 : DDLS 170 - INTERBUS connection

Fig. Appendix 7 : Example of DDLS 170 – INTERBUS connection

DDLS 170

INTERBUS Master

Bus terminal

/ node

us terminal

e.g. Siemens

AEG-Modicon
Bosch
Klöckner-Moeller
GE Fanuc
Klaschka

DO

yellow

5
4
3
2

1

DO

COM

DI

DI

green
brown
grey
pink

DI

DI

COM

DO

DO

PC/Master
or bus terminal

DDLS 170.1

DO

yellow

2
1
3
5

4

DO
COM
DI
DI

green
brown
grey
pink

DO
DO

COM

DI
DI

Bus terminal /
node

DDLS 170.2

1
6

3
2
7

11

12

+ U

B

11

12

+ U

B

GND

GND

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 53

C.2 RS422 point-to-point connection

Fig. Appendix 8 : Example of DDLS 170 – RS422 (INTERBUS module) connection

C.3 DDLS 170 – Profibus connection

Fig. Appendix 9 : Example of DDLS 170 – Profibus connection

TxD+
TxD–
RxD+
RxD–

GND

RxD+
RxD–

TxD+
TxD–

GND

5
4
2
1
11

2
1
5
4

11

RS422

DI

DI
DO
DO

DO
DO

DI
DI

12 12

+ U

B

+ U

B

RS422

PLCPLC

DDLS 170.1 DDLS 170.2

A

B

Master

B - B, A - A bridged internally

GND

GND

11 11

12 12

+ U

B

+ U

B

Slave

DDLS 170.1 DDLS 170.2

4 A

1 B
5 A'
2 B'

A
B

A 4
B 1

A

B

GND

GND

11 11

12 12

+ U

B

+ U

B

DDLS 170.1 DDLS 170.2

A 4
B 1

4 A

1 B

e.g. bus
terminal

Slave

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

54 DDLS 170 Leuze electronic

D Installation and Commissioning

D.1 Preparation

Observe the following points before installing the data transmission unit:

·

One device of each type (DDLS 170.1 and DDLS 170.2) is required per data
transmission path.

·

The data transmission path can be either horizontal or vertical.

·

Ensure interference-free data transmission through

- unimpeded optical connection between transmitter and receiver

- precise alignment

- clean lenses

·

Parallel operation of several data transmission paths:
When arranged with shifted frequencies, two parallel data paths can be operated
with a separation 0.3 m.
The parallel distance to a third transmission path can be calculated as follows:
parallel distance = 0.025 x range (however, at least 2.5 m)

Fig. Appendix 1 0 : Multiple data transmission paths

positioned one behind the other

parallel

no influence

no influence

min. 0,3 m

DDLS 170.2

DDLS 170.1

DDLS 170.2 DDLS 170.1

DDLS 170.2

DDLS 170.1

DDLS 170.2

DDLS 170.1

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 55

D.2 Installing the interface modules

Attention !

Improper installation of the interface modules leads to erroneous data transmission
or component damage.

For this reason:

·

Avoid electrostatic charging,

·

Do not touch plug pins,

·

Store interface modules only in their original packing,

·

Install interface modules only when system is in a voltage-free state.

➜ Lift up and remove DDLS 170.1/.2.
➜ Loosen mounting screw (1), install interface module (2) and tighten with the

mounting screw.

➜ Position and tighten down DDLS 170.1/.2.

Fig. Appendix 1 1 : Inst alling the int erfac e module

1

2

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

56 DDLS 170 Leuze electronic

D.3 Installation

Notice:

When preparing the installation sites, ensure that no vertical, lateral and angular
offsets can develop between the two units.

Information regarding the alignment of the DDLS 170 can be found in the front part
of this technical description (see Chapter 7).

➜ Drill fastening holes for the two adjusting brackets (1). For hole dimensions,

see Fig. Appendix 3. Fasten adjusting brackets (2).

➜ Put the DDLS 170.1 and DDLS 170.2 onto the adjusting brackets so that the

alignment indicators (1) point in the same direction.
The alignment indicators point up for vertical installation.

➜ Fasten each DDLS 170.1 and 170.2 with the hex socket-head screws.
➜ When installing vertically, align both DDLS 170s with unsprung screws (3) on

the adjusting bracket with the help of the alignment indicators.

Fig. Appendix 1 2 : Installation and horizontal alignment of DDLS 170

3

2

1

3

2

1

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 57

D.4 Commissioning

➜ Connect data signal and power cables with the correct polarity.

Check the following points prior to commissioning.

·

All cable and plug connections.

·

Profibus interface settings (1)

·

- Baud rate (2) on both DDLS 170s:
Desired transmission rate is set to I, all others to 0.

- Terminator (3) on both DDLS 170s:
Both switches must be in the same position
0 = inactive
I = active

Fig. Appendix 1 3 : Profibus interface module settings

➜ Activate bus operation

If faults occur during commissioning or if the data transmission path cannot be
activated, see Chapter "Error Diagnosis / Failures and Troubleshooting".

0

I

I 0

Baud rate

93,75k
187,5k
375k
500k

Terminator

Sub-D
to upper
component

1

3

2

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

58 DDLS 170 Leuze electronic

E Accessories / Order Designation

When ordering, specify:

·

per data path one DDLS 170.1 and one DDLS 170.2
(see Fig. Appendix 14: points 1 and 2)

·

2 connection elements AT 170-02 with adjusting brackets (for each)
(see Fig. Appendix 14: point 3)

·

2 interface modules (for each)

- IM 02-IBS for INTERBUS cable, RS422
or
IM 02-P for Profibus (FMS, DP, mixed operation FMS/DP)
(see Fig. Appendix 14: point 4)

Fig. Appendix 1 4 : DDLS 170 components

Components Description Type / Order Designation
Main unit

Range Trans mission

200 m 500 kbit/s
200 m 500 kbit/s

DDLS 170.1
DDLS 170.2

Interface plug­in module

INTERBUS plug-in module,
RS422
Profibus plug-in module,
RS485, Suconet K

IM 02-IBS

IM 02-P

Connection
elements

Connection element with screw
terminals and adjusting bracket:
Cable entry: 2 x PG 13.5

AT 170-02

21

3 4

These data are only valid for the previous data transmission systems DDLS 170.1
and DDLS 170.2!

Leuze electronic DDLS 170 59