Siemens SIMATIC NET PROFIBUS Operating instructions

SIMATIC NET PROFIBUS
Optical Link Module
OLM / P11 V4.0
OLM / P12 V4.0
OLM / P22 V4.0
OLM / P11 V4.0
OLM / G12 V4.0
OLM / G22 V4.0
OLM / G12-EEC V4.0
OLM / G11-1300 V4.0
OLM / G12-1300 V4.0
Operating Instructions
01/2013
C79000-G8976-C270-03
Preface
1
Introduction
2
Network Topologies
3
Product Characteristics
4
Installation and Maintenance
5
Approvals and Marks
6
References
7
Drawings
8
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
Danger
indicates that death or severe personal injury will result if proper precautions are not taken.
Warning
indicates that death or severe personal injury may result if proper precautions are not taken.
Caution
indicates that minor personal injury can result if proper precautions are not taken.
Notice
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
All rights reserved
The reproduction, transmission or use of this document or its contents is not permitted
without express written authority. Offenders will be liable for damages. All rights, including
rights created by patent grant or registration of a utility or design, are reserved.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware
and software described. Since variance cannot be precluded entirely, we cannot
guarantee full consistency. However, the information in this publication is reviewed
regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Industry Sector Industry Automation Division
Industrielle Kommunikation (I IA SC CI)
Postfach 4848, D-90026 Nürnberg
Ⓟ 01/2013
Subject to change
Siemens Aktiengesellschaft
C79000-G8976-C270-03
Copyright © Siemens AG 2007 - 2013.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the
specific task in accordance with the relevant documentation, in particular its warning notices and safety
instructions. Qualified personnel are those who, based on their training and experience, are capable of
identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Please note the following:
Warning
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The
permissible ambient conditions must be complied with. The information in the relevant documentation must be
observed.
Note: If PROFIBUS OLMs are supplied via long 24 V supply lines or over networks, measures must be taken
to prevent interference by strong electro magnetic pulses on the supply lines. These can occur, for example,
due to lightning strikes or when heavy inductive loads are switched. The robustness of the PROFIBUS OLM
against electromagnetic interference was verified by the Surge Immunity Test according to EN61000-4-5. For
this test, overvoltage protection for the voltage supply lines is necessary. The Dehn Blitzductor VT AD 24V
Type no. 918402 or a comparable protection element is, for example, suitable. Manufacturer: DEHN+SÖHNE
GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D-92306 Neumarkt, Germany
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of the
owner.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
iii
Contents
1
Preface ...................................................................................................................................................... 1
1.1
2
Introduction................................................................................................................................................ 3
2.1
3
4
5
6
iv
Preface...........................................................................................................................................1
Introduction ....................................................................................................................................3
Network Topologies ................................................................................................................................... 7
3.1
3.1.1
3.1.2
Linear (bus) Topology ....................................................................................................................8
Linear (bus) topology with fiber-optic link monitoring and segmentation.......................................9
Bus topology without fiber-optic link monitoring.............................................................................9
3.2
Star Topology...............................................................................................................................10
3.3
3.3.1
3.3.2
Ring Topology ..............................................................................................................................11
Redundant Optical Ring...............................................................................................................11
Redundant Optical Ring with two OLMs ......................................................................................13
Product Characteristics............................................................................................................................ 17
4.1
Technical Specifications ..............................................................................................................17
4.2
4.2.1
4.2.2
4.2.3
Installation ....................................................................................................................................21
Safety related notices ..................................................................................................................21
General information on commissioning .......................................................................................22
Setting compatibility, mode and transmit power ..........................................................................23
Installation and Maintenance ................................................................................................................... 29
5.1
5.1.1
5.1.2
Installation ....................................................................................................................................29
Installation instructions.................................................................................................................29
Connecting optical cables ............................................................................................................33
5.2
Installation of the Modules ...........................................................................................................34
5.3
Connection of the Electrical RS-485 Bus Cables ........................................................................36
5.4
Connecting of the Operating Power Supply.................................................................................38
5.5
Connecting the Signaling Contact Wires .....................................................................................38
5.6
Receive Level of the Optical Channels........................................................................................39
5.7
5.7.1
5.7.2
LED Displays and Troubleshooting .............................................................................................40
LED displays ................................................................................................................................40
Troubleshooting ...........................................................................................................................43
5.8
Maintenance.................................................................................................................................44
5.9
Cleaning .......................................................................................................................................45
5.10
5.10.1
5.10.2
Configuration................................................................................................................................45
Configuring optical bus and star topologies.................................................................................45
Configuring redundant optical rings .............................................................................................45
Approvals and Marks ............................................................................................................................... 47
6.1
CE Mark .......................................................................................................................................47
6.2
c-tick.............................................................................................................................................48
6.3
KC (Korean Standard) .................................................................................................................48
6.4
FM approval .................................................................................................................................49
6.5
Ex approval ..................................................................................................................................49
6.6
UL approval (U.S. and Canada)...................................................................................................49
6.7
Shipbuilding approvals.................................................................................................................50
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Contents
7
References .............................................................................................................................................. 51
7.1
8
References...................................................................................................................................51
Drawings.................................................................................................................................................. 53
Tables
Table 2-1
Number of electrical and optical ports per module, .......................................................................4
Table 4-1
Overview of the product characteristics.......................................................................................20
Table 4-2
DIL-switches in compatibility mode..............................................................................................24
Table 5-1
Meaning of the LED displays and indication by the signaling contact .........................................42
Table 5-2
Constants for calculating the slot time for DP-standard (redundant optical ring) ........................46
Table 5-3
Constants for calculating the slot time for DP/FMS (”universal“) and DP with S5 95U (redundant
optical ring)...................................................................................................................................46
Figures
Figure 2-1
PROFIBUS OLM with position of all interfaces, displays and adjustment options ........................3
Figure 3-1
Network structure in a linear (bus) optical topology.......................................................................8
Figure 3-2
Network structure with an optical star topology ...........................................................................10
Figure 3-3
Network structure with a redundant optical ring topology............................................................11
Figure 4-1
View of the OLM module from the top .........................................................................................22
Figure 4-2
Minimum cable length for use of plastic fiber S 980/1000 without fixed attenuator.....................27
Figure 5-1
Measures to suppress..................................................................................................................29
Figure 5-2
Securing shielded cables with cable clamps and cable retainers...............................................31
Figure 5-3
View of the module from below....................................................................................................33
Figure 5-4
Installation of a module on a standard DIN rail............................................................................34
Figure 5-5
Installation of a module with a mounting plate.............................................................................35
Figure 5-6
Drilling measures for the mounting plate, all dimensions are millimeter......................................36
Figure 5-7
Electrical port, connector assignment D-sub jack.......................................................................36
Figure 5-8
Operating power supply, pin assignment 5-pin terminal block ..................................................38
Figure 5-9
Signaling contact relay with floating contacts; ............................................................................38
Figure 5-10
Signaling contact, pin assignment 5 pin terminal block .............................................................38
Figure 5-11
Position of the level recording connections ................................................................................39
Figure 5-12
Relationship between measured output voltage and signal quality.............................................39
Figure 5-13
LED displays on the front panel ...................................................................................................40
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
v
1
1.1
1
Preface
Preface
Purpose of the operating instructions
These operating instructions support you when commissioning PROFIBUS OLM devices
(Optical Link Module)
Validity of these operating instructions
These operating instructions are valid for the following devices:
SIMATIC NET OLM / P11 V4.0
6GK1 503-2CA00
SIMATIC NET OLM / P12 V4.0
6GK1 503-3CA00
SIMATIC NET OLM / P22 V4.0
6GK1 503-4CA00
SIMATIC NET OLM / G11 V4.0
6GK1 503-2CB00
SIMATIC NET OLM / G12 V4.0
6GK1 503-3CB00
SIMATIC NET OLM / G22 V4.0
6GK1 503-4CB00
SIMATIC NET OLM / G12-EEC V4.0
6GK1 503-3CD00
SIMATIC NET OLM / G11-1300 V4.0
6GK1 503-2CC00
SIMATIC NET OLM / G12-1300 V4.0
6GK1 503-3CC00
Convention
OLM/ G 1 2 -1300
optional: wavelength
Number of optical interfaces
Number of RS-485 interfaces
G glass fiber
P plastic fiber
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
1
Preface
1.1 Preface
Further documentation
You will find more information on other SIMATIC NET products that you can use with the
OLM V4.0 devices in the “SIMATIC NET PROFIBUS networks SIEMENS AG” manual.
Finding information
To help you find the information you require more quickly, the manual includes not only the
table of contents but also the following sections in the Appendix:
• Glossary
• Index
Audience
These operating instructions are intended for persons involved in the commissioning of
PROFIBUS networks with the link modules of the OLM V4.0 series.
Standards and approvals
The devices of the OLM V4.0 series meet the requirements for the CE mark. For detailed
information, please refer to chapter 6 of these operating instructions.
The devices of the OLM V4.0 series also meet the requirements for the UL, C-Tick, FM and
ATEX marks. For detailed information please refer to chapter 6 of these operating
instructions.
The devices of the OLM V4.0 series also meet several requirements for shipbuilding. For the
respectively valid approvals call our hotline +49-911-895-7222.
Furthermore you can gather information at:
http://support.automation.siemens.com
2
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
2
2.1
2
Introduction
Introduction
This section provides you with an overview of the functions of the PROFIBUS OLM4.0
product family.
What is possible?
PROFIBUS OLMs are designed for use in optical PROFIBUS fieldbus networks. They allow
the conversion of electrical PROFIBUS interfaces (RS-485 level) into optical PROFIBUS
interfaces and vice versa.
The modules can be integrated in existing PROFIBUS fieldbus networks with the known
advantages of optical transmission technology. A complete PROFIBUS fieldbus network can
also be set up with modules in a linear (bus), star or ring topology as well as any
combination of these topologies.
To increase the reliability of the fieldbus network in case of failure, the redundant ring is
supported.
DIL switch for
modes
LED displays
Operating voltage
Signaling contact
Channel 1/0
RS-485
Sockets for
measuring levels of
the optical interfaces
(see section 5.6).
Channel 2 Channel 3
Optical channels
Figure 2-1
PROFIBUS OLM with position of all interfaces, displays and adjustment options
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
3
Introduction
2.1 Introduction
Every module has two (OLM P11, G11), three (OLM P12, G12), or four (OLM P22, G22)
independent channels (ports) that consist of transmitter and receiver pairs.
The power supply voltage for operation is 24 V DC. To increase operational reliability, a
redundant power supply is possible.
The electrical channel is designed as 9-pin D-sub socket. An RS-485 bus segment
complying with PROFIBUS standard EN 50170 /2/ can be connected to this channel.
The fiber-optic cables are connected via BFOC1/2.5 connectors.
Six multicolor LEDs indicate the current mode and any disruptions as well as the level ratios
on the optical interfaces.
Table 2-1 shows the different connection options of the modules and the maximum possible
optical range of the single channels.
OLM/
P11
P12
P22
G11
G12
G22
G12-EEC
G11-
G12-
1300
1300
Number of channels
-electrical
1
1
2
1
1
2
1
1
-optical
1
2
2
1
2
2
1
2
80 m
80 m
80 m
-
-
-
-
-
400 m
400 m
400 m
-
-
-
-
-
10/125 µm (9/125 µm)
-
-
-
-
-
-
15 km
15 km
50/125 µm
-
-
-
3 km
3 km
3 km
-
-
62.5/125 µm
-
-
-
3 km
3 km
3 km
-
-
Fiber types that can be used
- plastic fiber-optic cables
980/1000 µm
®
- PCF fiber-optic cables (HCS )
200/230 µm
- silica glass fiber-optic cables
Table 2-1
Number of electrical and optical ports per module,
usable fiber types, as well as maximum achievable fiber-optic cable distances between the modules. See
the “Technical Data” for precise conditions of use. PCF stands for Polymer Cladded Fiber and is similar to
HCS® 2.
There is a measurement output available for every channel, at which the optical input level
can be measured with a standard voltmeter.
The various error and disruption messages of the OLM are available as a group signal via a
signaling contact (relay with floating contacts) for further processing. The individual modes
as well as error/fault messages are displayed by several multicolor LEDs on the front panel
of the device (see section 5.7.1).
The mechanical design consists of a compact and stable metal housing which can be
mounted either on a DIN rail or on a mounting plate.
The modules are configured using switches that are easily accessible from the outside.
1
2
BFOC stands for Bayonet Fiber Optic Connector.
This type of connector is functionally compatible with ST connectors.
ST is a registered trademark of the company AT&T.
4
®
HCS is a trademark of Ensign-Bickford Optics Company.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Introduction
2.1 Introduction
The PROFIBUS OLMs comply with the standard EN 50170 /2/ and with the technical
guideline “Optical transmission technology for PROFIBUS” published by the PROFIBUS
User Organization (PNO).
OLM / G12 and OLM / G12-EEC have the same functions. They only differ in the
specification of the ambient climatic conditions: the OLM / G12 is suitable for use in the
standard temperature range from 0 °C to 60 °C, whereas the OLM / G12-EEC (extended
environmental conditions) can be used in the extended temperature range of -25 °C to +60
°C and up to 100% humidity (condensing).
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
5
3
Network Topologies
3
Which network topologies can be implemented?
The following network topologies can be implemented with the PROFIBUS OLM:
•
Point-to-point connection
•
Bus (linear) topology
•
Star topology
•
Redundant optical ring
Combinations of these basic types are also possible. To set up the fiber-optic links of these
network topologies, cables with two optical fibers are used.
If a high degree of availability is required of the fieldbus network, this can be increased by
using a redundant network configuration, for example to allow continued communication if a
cable is broken.
Please note the following:
 Single DTEs or complete PROFIBUS segments with a maximum of 31 nodes can be
connected to the electrical interface of the PROFIBUS OLM.
 Use only fiber-optic cables in areas subject to heavy noise to avoid EMC problems
affecting the entire network.
 Only OLMs of the same wavelength may be connected to each other optically:
– OLM / P11, OLM / P12 and OLM / P22 with each other
– OLM / G11, OLM / G12, OLM / G22, and OLM / G12 EEC with each other
– OLM / G11-1300 and OLM / G12-1300 with each other
 Optical channels connected via fiber-optic cables must be set to the same mode.
 Transitions between different OLM types are only possible via the RS-485 interface.
 In the network topologies described below, the OLM / G12-EEC can be used everywhere
where an OLM / G12 can be used.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
7
Network Topologies
3.1 Linear (bus) Topology
3.1
Linear (bus) Topology
Figure 3-1
Network structure in a linear (bus) optical topology
* If OLM / P22 or OLM / G22 are used, an additional DTE or bus segment
can be connected to Ch 0.
In a linear or bus structure, the single PROFIBUS OLMs are connected by two-fiber cables.
At the beginning and at the end of a line, modules with one optical channel are adequate, inbetween modules with two optical channels are necessary.
If single point-to-point connections are required, they can be implemented with modules with
one optical channel each.
The bus topology can be implemented with and without fiber-optic link monitoring. Fiber-optic
link monitoring is recommended in homogeneous OLM networks (factory default).
Please note that to ensure correct operation, the following conditions must be kept to when
configuring the network:
 The parameter MIN TSDR, described in the PROFIBUS standard EN 50170 /2/, must be
set to a value ≥ 11 on all DTEs. This is usually the case but should be checked if
permanent communication problems occur.
 Choose bus node addresses as low as possible when configuring your network, to reduce
master timeouts that may occur due to disruptions.
You will find information on changing the setting in the documentation supplied by the
manufacturer of your DTE.
8
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Network Topologies
3.1 Linear (bus) Topology
3.1.1
Linear (bus) topology with fiber-optic link monitoring and segmentation
Use this mode especially when you want a disrupted fiber-optic cable segment to be
separated from the rest of the network (see section 4.2.2.4). Only use this mode, if you only
connect PROFIBUS OLM V4.0 or V3/V4.0 with each other.
Monitoring mechanisms:
• Send echo:
• Monitor echo:
• Suppress echo:
• Monitor:
• Segmentation:
yes
yes
yes
yes
yes
In this mode, the individual fiber-optic links are monitored by the two connected modules.
If a module fails or a fiber-optic cable breaks or disturbances are detected on the optical
transmission line, the fiber-optic link between the two OLMs is interrupted (segmented). The
PROFIBUS network is separated into two (sub)networks each remaining functional on its
own. The problem is indicated by the channel LEDs changing to red and by the signaling
contacts of the two OLMs connected to the disturbed fiber-optic link. The segmentation is
canceled automatically as soon as both modules recognize that the segmented fieldbus
(sub)network is no longer disrupted based on test frames that they send out automatically.
Note that if a problem occurs in networks with several active bus nodes, two logical token
rings are formed. As a result, temporary network disturbances may occur due to double
tokens or frame collisions when the full network is restored.
Note:
If modules with two optical channels are used at the end of a line, the unused optical channel
must be set to the mode “bus without fiber-optic link monitoring”, so that it does not cause a
broken fiber-optic cable signal (see section 4.2.3.4). Remember that the optical channels
that are not connected must be protected against external light and pollution by protective
caps.
3.1.2
Bus topology without fiber-optic link monitoring
Use this mode when you connect a PROFIBUS OLM with a different fiber-optic component
according to the PROFIBUS guideline (optical/electrical converter), which does not send a
frame echo and does not expect or tolerate a frame echo.
Monitoring mechanisms:
•
Send echo:
no
•
•
•
Monitor echo:
Suppress echo:
Monitor:
Segmentation:
no
no
no
no
•
In this mode, there is no monitoring of the individual fiber-optic links.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
9
Network Topologies
3.2 Star Topology
3.2
Star Topology
RS-485
Electrical star segment
OLM/G12
OLM/P11
Ch 1
Ch 1
Ch 1
Ch 2
S E
OLM/P11
OLM/G11-1300
Ch 1
Ch 2
S E
Ch 2 Ch 3
S E S E
Ch 2
S E
FOC
E S
Ch 2
E S
Ch 2
Ch 1
E S
Ch 2
E S
Ch 2
Ch 1
E S
Ch 2
Ch 1
OLM/P11
OLM/P11
Ch 1
Ch 1
OLM/G11
OLM/G11
DTE/
bus segment
DTE/
bus segment
Figure 3-2
OLM/G11-1300
DTE/
bus segment
DTE/
bus segment
DTE/
bus segment
Network structure with an optical star topology
Several modules are grouped together to form an active PROFIBUS star coupler. Further
modules are connected to this via two-core fiber-optic cables. The modules of the star
coupler are interconnected via the electrical channel (electrical star segment). All OLM types
for different fiber-optic cables (plastic, PCF, glass) can be combined via the electrical star
segment.
Please note the following:
 CH1 / CH0 must be set to “Monitor off” (S0/S8 = 1) on all OLMs connected to the
electrical star segment. This disables segmentation function of the RS-485 channel of this
OLM to achieve high availability of the electrical star.
 Make sure that the electrical star segment is carefully wired. Keep its span as small as
possible to avoid interference in the electrical star segment that can spread to the whole
network. You can achieve this by positioning the OLMs directly next to each other on a
DIN rail.
 Switch on the terminating resistors (see section 5.3) in the bus connectors at the two ends
of the electrical star segments.
 If possible do not connect any bus nodes to the electrical star segment.
To set up an active PROFIBUS star coupler, modules with one or two optical channels can
be used. To connect a DTE or an RS-485 bus segment to an active star coupler, modules
with one optical channel are adequate.
When the monitoring on the optical channels is active, the fiber-optic links are monitored by
the connected OLMs.
10
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Network Topologies
3.3 Ring Topology
Note:
Unused optical channels you intend to use later to expand the network cause a broken fiberoptic cable signal if the monitoring is active. You can avoid this error message by setting
unused channels to the mode “bus without fiber-optic link monitoring”. Remember that the
optical channels that are not connected must be protected against external light and pollution
by protective caps.
3.3
3.3.1
Ring Topology
Redundant Optical Ring
Figure 3-3
*
Network structure with a redundant optical ring topology
If OLM / P22 or OLM / G22 are used, an additional DTE or bus segment
can be connected to Ch 0.
This network topology is a special form of the bus topology. “Closing” the optical bus
achieves high operational reliability in the network. A redundant optical ring can only be
implemented using modules with two optical channels.
Monitoring mechanisms:
•
Send echo:
yes
•
Monitor echo:
yes
•
Suppress echo:
yes
•
Segmentation:
yes
The interruption of one or both fiber-optic cables between the modules is detected by the
OLM and the ring becomes an optical bus.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
11
Network Topologies
3.3 Ring Topology
If one module fails, only the DTEs connected to this module or the RS-485 segment are
disconnected from the ring. The rest of the network itself stays functional as a bus. The
problem is indicated by the LEDs of the two OLMs connected to the disrupted fiber-optic link
and by the signaling contacts of these OLMs. The segmentation is canceled automatically as
soon as both modules recognize that the segmented fieldbus (sub)network is no longer
disrupted based on test frames that they send out automatically. The bus then closes again
to form a ring.
Please note the following:
For correct operation, the following conditions must be met:
 Only use this mode, if you only connect PROFIBUS OLMs with at least version V3 with
each other. Both optical channels must be set to the “redundant optical ring” mode on all
PROFIBUS OLMs. All modules within a ring must be connected to each other over fiberoptic cables. There must be no RS-485 bus cable within the ring.
 The MIN TSDR parameter described in the PROFIBUS standard EN 50170 /2/ must be
set to a value ≥ 11 on all DTEs. This is usually the case but should be checked if
permanent communication problems occur.
 Choose bus node addresses as low as possible when configuring your network, to reduce
master timeouts that may occur due to disruptions.
 If there is a failover (for example due to a cable break), there is failover time during which
correct data transmission is not possible. To ensure bumpless bridging for the application,
it is advisable to set the frame retry number on the PROFIBUS master to at least 3. To
ensure a bumpless return from the optical bus to the optical ring once a problem has been
eliminated, there must be no frame on the network at this time. This status occurs when
the master sends a GAP query to an address lower than HSA. The master tries to address
the device cyclically and waits for a reply at the longest until the configured slot time has
elapsed (“GAP query”). The OLM recognizes this status and closes the optical bus to
form an optical ring in the middle of this query sequence. This results in the following two
important configuration requirements for the redundant optical ring:

The value of the parameter HSA (Highest Station Address) must be set on all DTEs
so that there is at least one address between bus address 0 and the value HSA that is
not occupied by a bus node, in other words there is at least one address gap. You can
create this address gap simply by setting the HSA value one higher than the highest
existing bus node address.
Notice
If this requirement is not or no longer met, the optical bus will no longer close to form
a redundant optical ring after segmentation. In this case the error message (LED and
signaling contact) of the two affected OLMs will not be cleared after eliminating the
problem.

The slot time must be set to about twice the value compared with a not redundant
network. See section 5.10 for further information. You will find information on
changing the setting in the documentation supplied with your DTE or with the
configuration software.
Notice
No glass fiber-optic cable may be connected to an OLM that uses plastic fiber-optic cable
and vice versa.
12
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Network Topologies
3.3 Ring Topology
3.3.2
Redundant Optical Ring with two OLMs
Setting up a redundant optical ring with two PROFIBUS OLMs can be seen as special case
of the redundant optical ring and can be implemented with the following two configurations.
Figure 3-4
*
Configuration 1
Figure 3-5
Configuration 2
If OLM / P22 or OLM / G22 are used, an additional DTE or bus segment
can be connected to Ch 0.
How the LEDs react in the redundant optical ring:
A frame received by any channel is passed on to all other channels. If the frame was
received at an optical channel, it will also be sent back to the sender on the same channel as
an echo and therefore serves as a monitoring frame to test the fiber-optic links between the
OLMs.
The OLM recognizes whether a received frame is an echo or a frame that was forwarded. In
the case of an echo frame, the channel LED stays off whereas in the case of a forwarded
frame it will light up yellow. In networks with more than two OLMs, echo frames and
forwarded frames will alternate quickly. Due to the extended display-time of at least 300 ms,
all channel LEDs seem to be lit yellow continuously.
The channel LEDs may react differently in the redundant optical ring only if the following
conditions are met:
1. The redundant optical ring consists of exactly two OLMs and the two fiber-optic links are
of different length (difference > approx. 2 m).
Under these conditions, the receiving OLM will always receive a sent frame first on the
channel with the shorter fiber-optic link. The channel signals this with a lit yellow LED. The
frame on the other optical channel is interpreted as an “echo frame”, the channel LED stays
unlit. Since the fiber-optic cable lengths represent static variables, the display reaction is also
static.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
13
Network Topologies
3.3 Ring Topology
 Configuration 1 (see Figure 3-4, FOC1 < FOC2) , LED display:
1. Situation, no FOC interruption:
OLM 1
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit yellow
CH2
LED = is not lit
CH3
LED = is not lit
CH3
LED = lit yellow
2. Fault, FOC1 interrupted:
OLM 1
OLM 2
System LED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit red
CH2
LED = lit yellow
CH3
LED = lit yellow
CH3
LED = lit red
3. Fault, FOC2 interrupted:
OLM 1
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit yellow
CH2
LED = lit red
CH3
LED = lit red
CH3
LED = lit yellow
 Configuration 2 (Figure 3-5, FOC1 < FOC2) , LED display:
1. Situation, no FOC interruption:
OLM 1
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit yellow
CH2
LED = lit yellow
CH3
LED = is not lit
CH3
LED = is not lit
2. Fault, FOC1 interrupted:
OLM 1
14
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit red
CH2
LED = lit red
CH3
LED = lit yellow
CH3
LED = lit yellow
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Network Topologies
3.3 Ring Topology
3. Fault, FOC2 interrupted:
OLM 1
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
CH2
LED = lit yellow
CH2
LED = lit yellow
CH3
LED = lit red
CH3
LED = lit red
2. The redundant optical ring consists of exactly two OLMs and both fiber-optic cable
connections are of exactly the same length.
Under these circumstances, that the receiving OLM receives a frame on both of the optical
channels at the same time. To manage this case, the OLM prioritizes the two optical
channels. By definition, the frame on one optical channel will then be taken as an echo
(channel LED = off) and the frame on the other optical channel will then be taken as a
forwarded frame (channel LED = yellow).
Due to the effect of jitter and the resulting sampling differences between the two optical input
channels, it is possible that one or the other optical channel receives a frame first. Due to the
extended display time of at least 300 ms. all channel LEDs are then lit yellow continuously.
 Configuration 1/2 (FOC1 = FOC2), LED display A:
1. Situation, no FOC interruption:
OLM 1
OLM 2
SystemLED = lit green
SystemLED = lit green
CH1/0 LED = lit yellow
CH1/0 LED = lit yellow
(continuous, flashing, flickering)
(continuous, flashing, flickering)
CH2
CH2
LED = lit yellow
LED = lit yellow
(continuous, flashing, flickering)
(continuous, flashing, flickering)
CH3
CH3
LED = lit yellow
(continuous, flashing, flickering)
LED = lit yellow
(continuous, flashing, flickering)
2. Fault, FOC1 interrupted:
see above
3. Fault, FOC2 interrupted:
see above
Generally:
Regardless of whether a channel LED is lit or not, all optical channels are monitored
continuously in the redundant optical ring. If a channel LED is not lit, the frames circulating
on this channel are used to monitor the transmission line. The productive communication is
implemented over the channel with the LED lit yellow.
Without exception, faults are indicated by a red channel LED and by the signaling contact.
We recommend that you connect the signaling contact for safe monitoring of the OLM.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
15
4
4.1
4
Product Characteristics
Technical Specifications
Characteristics
Device type
OLM P11 V4.0
OLM P12 V4.0
OLM P22 V4.0
OLM G11 V4.0
OLM G12 V4.0
OLM G22 V4.0
OLM G12-EEC V4.0
OLM G11-1300 V4.0
OLM G12-1300 V4.0
Power supply
Operating voltage
Current consumption
Output voltage for bus termination
RS-485 (D-sub jack, pin 6)
24 V DC safety extra low voltage
permitted voltage range 18..32 V DC NEC Class 2
max. 200 mA
5 V DC+5/-10%,
Signaling Contact
Function
floating contact, opens in case of error
Voltage
CE:
max. 50 V DC/30 V AC safety extra low voltage
cULus: max. 30 V DC/30 V AC safety extra low voltage
Current
max 1.0 A
Signal transmission
Transmission rate
Transmission rate setting
Bit error rate
Signal delay time (any input/output)
9.6; 19.2; 45.45; 93.75; 187.5; 500 Kbps
1.5; 3; 6; 12 Mbps
automatic
<10-9
≤ 6.5 tBit
Retimer
Input (all channels)
Signal distortion
Bit length
± 30%
± 0.12%
Output (all channels)
Average bit length
± 0.01%
Status signaling
Device
Electrical channel
Optical channels
Optical level
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
LED “system”, red/green together with signaling contact
LED yellow/red
LED yellow/red
level display with green/yellow/red LED
17
Product Characteristics
4.1 Technical Specifications
Characteristics
Device type
OLM P11 V4.0
OLM P12 V4.0
OLM P22 V4.0
OLM G11 V4.0
OLM G12 V4.0
OLM G22 V4.0
OLM G12-EEC V4.0
OLM G11-1300 V4.0
OLM G12-1300 V4.0
Safety
IEC regulation
IEC 60950 (corresponds to EN 60950 and VDE 0805)
UL-approval
according to type plate
CSA-approval
according to type plate
C-Tick approval
according to type plate
FM approval
according to type plate
Ex (hazardous area) approval
according to type plate
Electrical channel
Type
RS-485
Input voltage stability
-7 V .. +12 V
Optical channels
Wavelength
660 nm
860 nm
1310 nm
in glass fiber E 10/125 (9/125)
-
-
-19 dBm
in glass fiber G 50/125
Optical transmit power “reduced“3
Optical transmit power “default“
-
-20.5 dBm
-16 dBm
-
in glass fiber G 62.5/125
Optical transmit power “reduced“3
Optical transmit power “default“
-
-17.5 dBm
-13 dBm
-
in PCF S 200/230
Optical transmit power “reduced“
Optical transmit power “default“
-17 dBm
-
-
in plastic fiber S 980/1000
Optical transmit power “reduced“
Optical transmit power “default“
-9.5 dBm
-5 dBm
-
-
Sensitivity of receiver
-25 dBm
-28 dBm
-29 dBm
Overdrive limit receiver (typ.)
-7 dBm
-11 dBm
-14 dBm
-
-
0..15 km
with glass fiber G 50/125
(3 dB/km @860 nm, 1 dB/km @1310 nm)
Transmit power “reduced“3
Transmit power “default“
-
0..1 km
0.5..3 km
-
with glass fiber G 62.5/125
(3.5 dB/km @860 nm, 1 dB/km @1310 nm)
Transmit power “reduced“3
Transmit power “default“
-
0..1 km
0.5..3 km
-
0..400 m
-
-
Optical power that can be injected
Range 4
with glass fiber E 10/125 (9/125)
(0.5 dB/km)
with PCF S 200/230 (10 dB/km)
Transmit power “reduced“
Transmit power “default“
3
The switch position "reduced" is valid for OLM / G11, G12, G22 and G12 EEC since revision (rev) 04. The valid revision is marked with an
"X" on the type plate. For e.g.
4
.
for rev = 04
The distances between two OLMs may not be exceeded, regardless of the optical power budget.
18
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Product Characteristics
4.1 Technical Specifications
Characteristics
Device type
OLM P11 V4.0
OLM P12 V4.0
OLM P22 V4.0
with plastic fiber S 980/1000 (0.2 dB/m)
Transmit power “reduced“
Transmit power “default“
OLM G11 V4.0
OLM G12 V4.0
OLM G22 V4.0
OLM G12-EEC V4.0
0..50 m
30..80 m
OLM G11-1300 V4.0
OLM G12-1300 V4.0
-
Connector
-
BFOC/2.5
Electromagnetic compatibility
Radiated emission
EN55022, limit value class A
Conducted emission
EN55022, limit value class A
Electrostatic discharge (ESD)
EN61000-4-2, ± 6 kV contact discharge
Radiated RF
EN61000-4-3, 10 V/m 80 MHz .. 1 GHz
Conducted RF
EN61000-4-6, 10 V 10 kHz .. 80 MHz
Burst
EN61000-4-4, ± 2 kV on power supply, signaling contact and RS-485
Surge
(with Blitzductor)
EN61000-4-5,
on power supply lines
on RS-485 bus lines
Voltage interruption
Voltage dips
± 1 kV balanced
± 2 kV unbalanced
± 2 kV unbalanced
EN61000-4-11,
voltage reduction by >95% for 5 s
voltage reduction by 30% for 10 ms
voltage reduction by 60% for 100 ms and 1000 ms
Climatic ambient conditions
Ambient temperature during operation
-25 °C..+60 °C for OLMG12-EEC
0 °C..+60 °C for all other OLMs
Storage and transport temperature
-40 °C..+70 °C
Relative humidity
Max. 100%, condensing for OLMG1x-EEC
<95%, non condensing for all other OLMs
Mechanical ambient conditions
Oscillation in operation
10..58 Hz, 0.075 mm deflection
58..150 Hz, 1 g acceleration
Oscillation during transportation
5 Hz..9 Hz, 3.5 mm deflection
9 Hz..500 Hz, 1 g acceleration
Vibration in operation
40 m/s²
Shock in operation
150 m/s², 10 ms
Shock packed
250 m/s², 6 ms
Free fall unpacked
10 cm
Free fall packed
30 cm in product packaging
1 m in shipping packaging
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
19
Product Characteristics
4.1 Technical Specifications
Characteristics
Device type
OLM P11 V4.0
OLM P12 V4.0
OLM P22 V4.0
OLM G11 V4.0
OLM G12 V4.0
OLM G22 V4.0
OLM G12-EEC V4.0
OLM G11-1300 V4.0
OLM G12-1300 V4.0
Miscellaneous information
Degree of protection
IP40
Dimensions
39.5 x 112 x 74.5 mm
Housing material
stainless steel, 1.4016
Weight
approx. 340 g
Silicone
the device is free of silicone
MTBF at 40 °C
155,29 years (P11)
117,93 years (P12)
107,05 years (P22)
157,87 years (G11)
118,16 years
(G12/EEC)
108,69 years (G22)
157,24 years
(G11-1300)
117,69 years
(G12-1300)
MTBF at 60 °C
73,27 years (P11)
55,87 years (P12)
50,50 years (P22)
73,95 years (G11)
56,05 years
(G12/EEC)
50,96 years (G22)
73,82 years
(G11-1300)
55,94 years
(G12-1300)
Table 4-1
Overview of the product characteristics
Notice: The resistance to ground (RTG) for operation of an ungrounded PROFIBUS OLM V4.0 is
830 kOhm.
20
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Product Characteristics
4.2 Installation
4.2
4.2.1
Installation
Safety related notices
Only use the PROFIBUS OLM in the way intended in these operating instructions.
In particular, observe all warnings and safety-relevant notices.
Run the modules only with a safety extra-low voltage of a maximum of +32 V DC (typically
+24 V DC) according to IEC 950 / EN 60 950 / VDE 0805. According to the UL/CSA-approval,
the power supply unit must meet the requirements of NEC, Class 2. Protective measures must
be taken to avoid the rated voltage of the equipment being exceeded by more than 40% by
transient overvoltages. This is the case if the equipment is supplied exclusively by SELV
circuits. Only the connectors supplied may be used for the electrical connection of the OLM,
(applies also when replacement parts are used). When using the existing connectors (e.g.
OLM V3), the proper contact cannot be guaranteed because of different pin diameters! The
supplied connectors must also be plugged in to achieve IP40.
Observe the electrical limit values when connecting voltage to the signaling contacts: 50 V DC,
30 V AC (CE) / 30 V DC, 30 V AC (cULus). The connected voltage must also be a safety
extra-low voltage according to IEC 950/ EN 60 950/ VDE 0805 and must to meet the
requirements of NEC, Class 2 in accordance with the UL/CSA approval.
WARNING: If temperatures in excess of 70 °C occur on the cable or at the cable feed-in point,
or the temperature at the branching point of the cables exceeds 80 °C, special measures need
to be taken. If the equipment is operated at an ambient temperature of 50 °C – 60 °C, use
cables with a permitted operating temperature of at least 80 °C.
WARNING: – Explosion Hazard – Do not disconnect while circuit is live unless area is known
to be non-hazardous.
DANGER: Never connect the PROFIBUS OLM to mains voltage.
Choose the installation location so that the climatic and mechanical limit values as specified in
the technical specifications can be met.
WARNING: All PROFIBUS OLMs are approved for operation in the hazardous area zone 2
according to Ex nA IIC T4 Gc. In this case, the modules must be installed in a suitable
enclosure (cabinet) providing degree of protection IP54 according to IEC 529. In this situation,
the supplied connectors must be assembled. The fiber-optic bus lines may be laid in or
through a Zone 1 hazardous area only with an OLM that is appropriately labeled (see type
plate, Ex nA [op is Gb] IIC T4 Gc and see also section 6.5 Ex approval).
Note: If PROFIBUS OLMs are supplied via long 24 V supply lines or over networks, measures must be
taken to prevent interference by strong electro magnetic pulses on the supply lines. These can occur, for
example, due to lightning strikes or when heavy inductive loads are switched. The robustness of the
PROFIBUS OLM against electromagnetic interference was verified by the Surge Immunity Test according
to EN61000-4-5. For this test, overvoltage protection for the voltage supply lines is necessary. The Dehn
Blitzductor VT AD 24V Type no. 918402 or a comparable protection element is, for example, suitable.
Manufacturer: DEHN+SÖHNE GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D-92306 Neumarkt,
Germany
Note: Under foreseeable circumstances, the accessible optical radiant power of the components used
represents no danger and meets the requirements for class 1 according to IEC 60825-1 Ed.1.2:2001-08.
Nevertheless, avoid looking directly into the transmitter or into the end of a fiber-optic cable.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
21
Product Characteristics
4.2 Installation
4.2.2
General information on commissioning
Unpack the OLM V4.0 and its accessories and check that the consignment is complete and
that there has been no damage during transportation. After unpacking, the device should be
acclimatized for some time to avoid condensation after to storage in cold surroundings.
First choose the network topology suitable for your requirements. Commissioning of the
modules then involves the following steps:
 Checking and, if necessary, setting of the DIL switches.
 Installation of the modules.
 Connection of the power supply and, if required, connection of the signaling contacts.
 Connection of the RS-485 bus line with installed bus connectors (if you use a bus
topology, remember that the terminating resistors in the connectors at both ends of the
line must be activated).
 Connection of the optical bus lines.
Figure 4-1
View of the OLM from the top
Position of the DIL switches and of the terminal block for the power supply/signaling contacts/level
measurement. The figure shows the factory default setting of the DIL switches (switches S0, S1, S2, S3,
S4, S7 and S8 in position “0”, switches S5 and S6 in position “1”).
22
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Product Characteristics
4.2 Installation
4.2.3
Setting compatibility, mode and transmit power
Please note the following:
The OLM must be switched off when changing the mode. You can achieve this for example
by disconnecting the 5-pin terminal block.
4.2.3.1
Setting the compatibility
With DIL switch S7, you can enable or disable functional compatibility with devices of the
previous generation SINEC L2FO OLM / P3, -P4, -S3, -S4, S3-1300 and S4-1300. The
default setting of S7 is position 0 (compatibility disabled).
DIL switch S7 (compatibility) in position 0:
Compatibility with SINEC L2FO OLM / P3, -P4, -S3, -S4, -S3-1300, -S4-1300 disabled
DIL switch S7 (compatibility) in position 1:
Compatibility with SINEC L2FO OLM / P3, -P4, -S3, -S4, -S3-1300, -S4-1300 enabled
By setting DIL switch S7 to 1, the functionality compatibility with optical link modules SINEC
L2FO OLM / P3, OLM / P4, OLM/S3, OLM/S4, OLM/S3-1300 and OLM/S4-1300 is enabled.
This mode is necessary for mixed operation of these modules with the OLM V4.0. Only set
the S7 switch to position 1, if the PROFIBUS OLM is used as replacement or extension
device in existing networks with SINEC L2FO OLM and a direct optical connection is
required. To interconnect OLM V3 and OLM V4.0, switch S7 must be set to position 0
because these devices are directly compatible.
The effects of the DIL switches involving compatibility mode are described in Table 4-2.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
23
Product Characteristics
4.2 Installation
The significance of the DIL switches of the OLM when S7=1 for:
SINEC L2FO
OLM / P3 and OLM / P4
SINEC L2FO
OLM / S3 and OLM / S4
SINEC L2FO
OLM / S3-1300 and
OLM / S4-1300
S6
S6
S6
Reserved
0
1
/P3:
reserved
0
1
/S4: Output
Power CH4
Standard
High
/S3:
reserved
S5
0
1
Output Power CH3
Standard
High
S5
0
1
Output Power CH3
Standard
High
S5
Reserved
S4
Reserved
S4
Reserved
S4
Reserved
S3
Reserved
S3
0
1
Distance
Extended
Standard
S3
0
1
Distance
Extended
Standard
S2
Redundancy
S2
0
1
Off
On
S1
0
1
Mode
Line/Ring
Line
Monitor
On
Off
/S3:
reserved
0
1
/S4:
Redundancy
Off
On
S1
0
1
Mode
Line/Ring
Line
Monitor
On
Off
S2
/S3-1300:
reserved
0
1
/S4-1300:
Redundancy
Off
On
S1
0
1
Mode
Line/Ring
Line
Monitor
On
Off
S0
Reserved
S0
Reserved
S0
Reserved
S8
Reserved
S8
Reserved
S8
Reserved
Table 4-2
4.2.3.2
/P4: Output
Power CH4
Standard
High
DIL-switches in compatibility mode
Setting the mode
Notice! The following information is only valid for the default setting of S7 (S7 = 0), this means
compatibility is disabled!
The mode of the electrical channel CH1 is set with DIL switch S0. The mode of the electrical
channel CH0 is set with DIL switch S8. If the OLM has only one electrical interface, S8 has
no function. The mode of optical channel CH2 is set with DIL switches S1 and S2. The mode
of optical channel CH3 is set with DIL switches S3 and S4. If the OLM has only one optical
interface, S3 and S4 have no function.
4.2.3.3
Setting the mode of the electrical channel (CH1)
Mode “electrical channel with segment monitoring“
CH1 is set to this mode, when S0 is in position 0.
24
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Product Characteristics
4.2 Installation
Mode “electrical channel without segment monitoring“
CH1 is set to this mode, when S0 is in position 1.
Note: This mode should only be set in the star segment of the star topology.
4.2.3.4
Setting the mode of the electrical channel (CH0)
Only for OLM / P22 and OLM / G22
Mode “electrical channel with segment monitoring“
CH0 is set to this mode, when S8 is in position 0.
Mode “electrical channel without segment monitoring“
CH0 is set to this mode, when S8 is in position 1.
Note: This mode should only be set in the star segment of the star topology.
4.2.3.5
Setting the mode of the optical channels (CH2, CH3)
The mode can be set separately for each optical channel. Combinations of the modes “bus
with and bus without fiber-optic link monitoring” are possible. Remember that the two optical
channels connected via the fiber-optic cables must always be set to the same mode! When
operating with devices that do not provide “fiber-optic link monitoring” this mode cannot be
used and must be disabled on the OLM V4.
If mode “redundant optical ring” is used, both optical channels have to be set to this mode
accordingly.
Mode “bus with fiber-optic link monitoring and segmentation”
CH2 is set to this mode, when S1 and S2 are in position 0.
CH3 is set to this mode, when S3 and S4 are in position 0.
Mode “bus without fiber-optic link monitoring”
CH2 is set to this mode, when S1 is in position 1 and S2 is in position 0.
CH3 is set to this mode, when S3 is in position 1 and S4 is in position 0.
Mode “redundant optical ring“
CH2 is set to this mode, when S1 and S2 are in position 1.
CH3 is set to this mode, when S3 and S4 are in position 1.
Note: Remember that both optical channels of a module must be set to the same mode.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
25
Product Characteristics
4.2 Installation
4.2.3.6
Reducing the optical transmit power
Notice! The following information is only valid for the default setting of S7 (S7=0)!
for OLM / P11, OLM / P12, and OLM / P22
The OLM / P11, OLM / P12, and OLM / P22 have a high optical transmit power. Connecting
these modules with non-OLM devices via plastic fiber-optic cables can lead to optical
overdrive, especially if short cables are used. In this case, the optical transmit power can be
reduced by approx. 60% (3.8 dB).
for OLM / G11, OLM / G12, OLM / G12 EEC and OLM / G22
The OLM / G11, G12, G12 EEC and OLM / G22 have a high optical transmit power.
Connecting these modules with non-OLM devices via multimode fiber-optic cables can lead
to optical overdrive, especially if short cables are used. In this case (revision 04 and higher
for OLM / G11, G12, G12 EEC and OLM / G22), the optical transmit power can be reduced
by approx. 70% (4.5 dB).
The valid revision (rev) is marked with an "X" on the type plate.
For e.g.
for rev = 04.
The optical transmit power of CH2 is set with DIL switch S5.
The optical transmit power of CH3 is set with DIL switch S6.
S6 has no function for the OLM / P11 and OLM / G11, respectively.
Leave S5 in position 1 (default) if the fiber-optic link on CH2 works correctly in this position.
Leave S6 in position 1 (default) if the fiber-optic link on CH3 works correctly in this position.
Set S5 to position 0 (reduced) if overdrive of a non-OLM device occurs on CH2.
Set S6 to position 0 (reduced) if overdrive of a non OLM-device occurs on CH3.
Note
When using PCF fibers, the default transmit power must be set (S5 or S6 in position 1).
Note
If OLM / P11 V4.0, OLM / P12 V4.0, or OLM / P22 V4.0 is operated along with OBTs, IM1511 FO, CP 5613 FO/CP 5614 FO, IM 467 FO, CP 342-5 FO or IM 153-2 FO devices using S
980/1000 plastic fiber cables, the devices must be interconnected by fiber-optic cables with a
minimum length of 30 m (see Figure 4-2). As an alternative, a fixed attenuator with an
attenuation value between 5 dB and 15 dB can be used. The fixed attenuator must be
installed into the OLM receiver line. The coresponding DIL switch (S5 or S6) has to be set to
"reduced". If PCF fibers S 200/230 are used, neither a minimum line length nor an attenuator
is necessary.
26
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Product Characteristics
4.2 Installation
Figure 4-2 Minimum cable length for use of plastic fiber S 980/1000 without fixed attenuator
4.2.3.7
DIL Switches S5 / S6 in OLM / G11-1300 and OLM / G12-1300
In OLM V4 devices for glass FOC (1300 nm), the DIL switches S5 and S6 do not have a
function (reduction of optical transmit power not possible). Nevertheless, if the OLM V4 is
used along with OLM V3 G11-1300 or OLM V3 G12-1300 devices, the DIL switches S6 and
S5 of the OLM V3 must be set to "0" in order to avoid interference due to the internal design
of the OLM V3 devices.
4.2.3.8
Mixed operation of OLM V4 with OLM V2 (SINEC L2FO)
If OLM V4 modules are used along with OLM V2 (SINEC L2FO) modules, the bus
terminating resistors for the second RS-485 port must be activated on the OLM V2 if the port
is not used. This is done by setting DIL switches S3 and S4 (termination) to ON.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
27
5
5.1
Installation and Maintenance
5
Installation
5.1.1
Installation instructions
Electromagnetic compatibility
Electromagnetic compatibility involves all questions regarding electric, magnetic and
electromagnetic emission effects. To avoid disturbing influences on electrical installations,
these effects must be reduced to a minimum. The construction of device, correct connection
of bus lines and the suppression of self inductances are essential limitation measures. See
also the note in section 4.2.1 (protecting against lightning strikes).
Suppression of self inductances
Figure 5-1

Connect self inductances to a suppression circuit. Selfinductance in relays and fans etc. produces disturbance
voltages that are far higher than the operating voltage.
These disturbance voltages can influence electronic
devices. The disturbance voltages cause by inductors
must be limited at the emission source by connecting
suppression circuits (diode or RC circuit). Only use
suppressors that are intended for use with your relay or
fan.

Switching cubicle illumination
Measures to suppress
luminescent lamps in a
cubicle
Use light bulbs for the switching cubicle illumination, e.g.
LINESTRA lamps. Avoid the use of luminescent lamps
because these produce noise fields. If you cannot avoid
using luminescent lamps, the measures described in
Figure 5-1 will be necessary.
Arrangement of devices and cables
 Maintaining clearance to reduce noise
A both simple and effective way of reducing disturbing influences is to maintain clearances
between the culprit and victim device or cable. Inductive and capacitive disturbances
decrease with the square of the distance between the elements involved. This means that
doubling the distance reduces the effect of the disturbance by a factor 4. If placement
considerations are taken into account in the planning of a building or a cubicle, these
measures can usually be implemented very cheaply.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
29
Installation and Maintenance
5.1 Installation
Please note the following:
A minimum distance of 15 cm must be maintained between an OLM and a load switching
element (e.g. contactor, relay, temperature control, switch, etc.). This minimum clearance is
measured between the outside edges of the components and must be adhered to in all
directions around an OLM. The power supply lines (24 V DC) of the OLM must not be laid in
the same cable duct as power lines (load circuits).
The lines +24 V DC and GND should be twisted with each other.
 Recommendations on the arrangement of devices and lines with the aim of achieving the
lowest mutual influence possible can be found in EN 50174-2.
 For applications in environments with heavy electromagnetic interference and for use in
shipbuilding, the retry value in the PROFIBUS master must be set to 4.
 Bus cable shields.
Note the following measures for shielding lines:
- Use completely shielded SIMATIC NET PROFIBUS cables. The shields of these cables
have a density high enough to meet the legal requirements for disturbance emission and
immunity.
- Always connect the shields of bus cables at both ends. The legal requirements for
emissions and immunity can only be met by connecting the shield of the bus cables at both
ends (CE mark).
- Secure the shield of the bus cable to the connector housing or the cable clamps.
- In stationary use, it is advisable to strip the insulation of the shielded cable over the entire
length damaging it and to lay it on shielding/grounding rail.
Note:
If there are potential differences between the grounding points, an unduly high compensating
current may flow over the shield connected at both ends. Under no circumstances
disconnect the shield of the bus cable to solve the problem.
The following solution is permissible.
Install an extra equipotential bonding cable parallel to the bus cable and this can then take
up the shield current.
30
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.1 Installation
Shield connections
Figure 5-2
Securing shielded cables with cable
clamps and cable retainers
(schematic image)
Please note the following points when connecting
the cable shield:

Connect the shield braid with cable clamps
made of metal.

The clamps must surround the shield
making good contact over a large area
(see Figure 5-2).

Only contact the SIMATIC NET
PROFIBUS cables via the copper braid
shield and not via the aluminum foil shield.
The foil shield is applied to one side of a
plastic foil to increase the tensile strength
and therefore is not conductive!

The shielding of all cables entering a
switching cubicle from outside must make
large area contact with chassis ground.

The braid shield of the cables must not be
damaged when stripping the cable jacket.
Tin-plated or galvanically stabilized
surfaces are ideal for good contact
between grounding elements. With tinplated surfaces, the necessary contact
must be established using screws. Painted
or varnished surfaces at the contact points
are unsuitable.

Shield clamps or contacts must not be
used as strain relief. The contact to the
shielding rail could deteriorate or be
broken altogether.
Optical link power budget, aging and environmental requirements
When using OLM V4.0 devices, make sure that they are not exposed to high temperatures
for no good reason. The aging of the devices increases radically in high temperatures. The
same applies to the connected fiber-optic cables. They age faster under the influence of
temperature and high humidity. The deterioration caused by humidity especially applies to
plastic fiber-optic cables.
The described deterioration of devices and fiber-optic cables is offset by the link power
margin. This is obtained from the difference between the receiver sensitivity and the
minimum input optical power (see section 4.1) along with the cable attenuation that derives
from the maximum operating distance.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
31
Installation and Maintenance
5.1 Installation
Example:
OLM / G12, wavelength 860 nm, fiber 62.5/200 µm
Psend = 13 dBm
Preceiver = 28 dBm
optical link margin
= 28 dBm -13 dBm= 15 dBm
max. line length
= 3 km
attenuation
= 3.5 dB/km @ 860 nm
max. line attenuation
= 3.5 dB/km * 3 km = 10.5 dB
optical power margin
= optical link power budget – max. line attenuation
= 15 dBm – 10.5 dBm = 4.5 dBm
This link power margin may not be infringed on by the user, because it may lead to errors at
the optical interface!
You should also remember that the maximum line lengths are only valid for unspliced cables.
If splices are used in the configured plant, their loss must be added to the cable loss.
32
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.1 Installation
5.1.2
Connecting optical cables
Figure 5-3
View of the module from below
with optical channels 2 and 3
(device with two optical
channels)

Connect the single modules via a two-core fiber-optic cable
with BFOC/2.5 connectors.

Make sure
– that the end faces of the optical connectors are clean.
– that always one optical input and one optical output are
interconnected (“crossover connection“). The BFOC
sockets of a channel that belong together are marked on
the lower part of the front panel.
– that the optical connector is securely locked to the BFOC
socket (bayonet connector must be locked).
– that the tip of the BFOC connector is inserted completely
into the fiber-optic cable socket when using single mode
fiber-optic cables. If necessary, push the connector into
the socket using anti-kink sleeve to make reliable contact.

Make sure there is adequate strain relief for the fiber-optic
cable and keep to the minimum bending radii of the fiberoptic cables (see note below).

Close unused BFOC sockets with the supplied protective
caps (note: An unused optical channel should be set to the
“bus without fiber-optic link monitoring“ mode so that it does
not cause a broken fiber-optic cable signal). Incoming
external light can disturb the network, especially if the area
is bright. Intruding dust can destroy the optical components.

Keep to the maximum length of the fiber-optic cables and
the possible fiber types, as shown in Table 2-1, page 4. and
in the technical specifications, section 4.1.

Test the quality of the link using the measurement socket
after installing the optical network. The values must be
within the permissible range according to section 5.6.
Notice
No glass fiber-optic cable may be connected to an OLM that uses plastic fiber-optic cable and vice
versa.
Note
The laying of fiber-optic cables requires special measures. Mechanical stress such as traction,
pressure or kinking must be avoided. The cable manufacturers specify minimum bending radii for
fiber-optic cables both during installation and operation. The bending radii and the requirements when
laying cables depend largely on the cable type used and must therefore be checked up in the
instructions in the relevant data sheets. Ignoring these requirements may lead to higher attenuation
values and, in the worst case (extreme bending), to destruction of the fiber-optic cable.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
33
Installation and Maintenance
5.2 Installation of the Modules
5.2
Installation of the Modules
Installation options
The OLMs can either be mounted on a 35 mm rail according to DIN EN 50022 or on a flat
surface with the help of a mounting plate.
 Choose the location so that the climatic and mechanical limit values listed in the technical
specifications can be met.
 Make sure there is enough space to connect the bus and voltage supply lines.
 Connect the fiber-optic cables before you install the modules. This makes it easier to
connect the fiber-optic cables.
 Only install the modules on a rail or a mounting plate that is grounded with low resistance
and inductance. No other grounding measures are necessary.
Installation on a DIN rail

Fit the upper securing hooks onto the rail
and push in the lower part towards the rail,
as shown in Figure 5-4 , until it locks
audibly in place. To uninstall the module,
pull the locking slide downwards.
Locking slide
Figure 5-4
34
Installation of a module on a standard DIN rail
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.2 Installation of the Modules
Installation on a mounting plate
 Unscrew the 3 screws on the right side of the OLM (the side with the type label).
 Fix with this screws the mounting plate (MLFB: 6GK1503-8AA00).
 Now fix the OLM at the wall or at a cubicle plate.
 Make sure there is a reliable and permanent electrical connection between the mounting plate and surface,
for example by using toothed washers.
holes for wall (plate)
installation
mounting plate with
OLM on the front
Figure 5-5
Installation of a module with a mounting plate
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
35
Installation and Maintenance
5.3 Connection of the Electrical RS-485 Bus Cables
71
10,15
37,35
60,15
21,7
0
0
83,3
67,8
108
3x Ø3,5
Figure 5-6
5.3
Connection of the Electrical RS-485 Bus Cables
9
8
7
6
Figure 5-7
36
Drilling measures for the mounting plate, all dimensions are millimeter
5
4
3
2
1
Pin
3
8
5
6
4
1, 2, 7, 9
Assignment
RxD/TxD, P
RxD/TxD, N
Ground
+5V Output
RTS
vacant
Electrical port, connector
assignment D-sub jack
The modules are equipped with one or two electrical ports with
RS-485 level. They are designed as 9-pin D-sub jack with
screw locking mechanism (inner thread UNC 4-40).
The pin assignment corresponds to the PROFIBUS standard
assignment. A short-circuit proof 5 V output for the supply of
external pull-up/pull-down resistances is available at pin 6. The
resistances must have a power loss of at least 0.25 W. The RS485 bus cables RxD/TxD, N and RxD/TxD, P are galvanically
isolated from the 24 V supply voltage within the SELV limits
(functional isolation).
The RS-485 interface is electrically connected with the housing.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.3 Connection of the Electrical RS-485 Bus Cables
 Only use shielded twisted pair for the RS-485 bus cables as described in the manual
“SIMATIC NET PROFIBUS Networks”. Do not exceed the segment lengths specified there.
 Connect the RS-485 bus segment via a PROFIBUS connector. If the module is at the
beginning or at the end of a bus segment, this connector must have an active bus terminator.
 All PROFIBUS bus connectors of the network must be screwed securely to the RS-485
ports.
 Connecting or removing the bus connector or loosely connected bus connectors or bus wires
not secure inside the connectors can lead to disruptions in the optical and electrical network.
 Connect or remove the RS-485 bus connector sharply and without tilting or levering the
connector.
 Disconnect the RS-485 bus cable from the OLM when there is no device at the other end or
when there is no power supplied to it. Otherwise the open line acts like an antenna and is
susceptible to noise.
 In order to minimize disturbances, keep to the following order when connecting an RS-485
bus cable to a PROFIBUS OLM when the network is active:
1. Plug the RS-485 bus connector onto the relevant device (e.g. the programming device)
and secure it with the screws.
2. Insert the RS-485 bus connector in the PROFIBUS OLM with a sharp movement and
without tilting the connector.
Carry out the steps in the reverse order to disconnect a device from the network.
 Make sure that the bus segment connected to the RS-485 port is terminated at both ends.
Only use a connecting cable that is terminated at both ends to connect a single device.
 If temperatures in excess of 70 °C can occur on the cables or their insertion points or the
temperature at cable branching points can exceed 80 °C, special measures must be taken.
For ambient temperatures of 50 °C to 60 °C, cables with a temperature rating for at least
80 °C should be used.
Compatibility notice:
In the OLM V3, pin 2 was additionally connected with ground and pin 1 with the shield. This
does not conform with the relevant standard EN 50170 /2/. This presents no problem, when
cables complying with the PROFIBUS standard are used. When installing in an existing cabling
system, check the pin assignment and modify it if necessary.
Please note the following safety information:
Do not connect RS-485 bus cables to the OLM that are laid completely or partly outside
buildings. Lightning strikes in the vicinity could otherwise destroy the modules. If the bus exits
the building, use fiber-optic cables!
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
37
Installation and Maintenance
5.4 Connecting of the Operating Power Supply
5.4
Connecting of the Operating Power Supply
L1+
The terminal block can be removed from the device to allow
cables to be connected.

F1
M
F2
L2+
Figure 5-8
5.5
Operating power supply,
pin assignment 5-pin
terminal block
Supply the module only with a stabilized safety extra-low
voltage of a maximum of +32 V (typically +24 V)
according to IEC 950 / EN 60 950 / VDE 0805. According
to the UL/CSA-approval, the power supply unit must meet
the requirements of NEC, Class 2. This can be supplied
via the 5-pin terminal block on the top of the module.
To increase the operational reliability, the module can be
supplied redundantly via the terminals L2+/+24 V DC and
M. If the regular supply voltage fails, the module
automatically switches to the redundant power supply.
There is no load splitting between the individual power
supplies. The signaling contact does not indicate the
failure of one of the 24 V supplies. To monitor the power
supply, the supplies and the signaling contact must be
connected to an input module.
Latches on the terminal block ensure a secure connection to the
device and avoid polarity reversal.

Connecting the Signaling Contact Wires
F1
Figure 5-9
F2
Signaling contact relay
with floating contacts;
In case of error, the
contact is open
The terminal block can be removed from the device to allow
wiring to be connected.
A relay with floating contacts is available for the signaling
contact on the 5-pin terminal block on the top of the module.
This relay can be used to signal problems in the network and on
the modules. If a problem occurs, the contact is opened. This
means that a total power outage is also signaled.
The problems indicated by the signaling contact are listed in
section 5.7. Limit values of the signaling contact:
– maximum switching voltage 50 V DC; 30 V AC
L1+
F1
M
F2
L2+
Figure 5-10 Signaling contact, pin
assignment 5 pin
terminal block
38
– maximum switching current 1.0 A
The voltage connected to the relay must be a safety extra-low
voltage according to IEC 950/ EN 60 950/ VDE 0805 and must
meet the requirements of NEC, Class 2 in accordance with the
UL/CSA approval.
 Connection assignment 5-pin terminal block:
Terminal F1 and F2.
 Please make absolutely sure that the terminals of the 5-pin
terminal block are connected correctly. Make sure there is
adequate electrical insulation of the connecting cables to the
signaling contacts, especially if you are using voltages higher
than 32 V. Connecting up wrongly can lead to the destruction
of the modules.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.6 Receive Level of the Optical Channels
5.6
Receive Level of the Optical Channels
The receive level of the two optical channels CH2 und CH3 can
be measured using a standard voltmeter via the measurement
sockets. The voltmeter can be connected and disconnected
while the device is operating. The OLM is protected against a
short circuit at the measurement sockets; data transmission is
not influenced. The receive level of the two optical channels can
be read in on a PLC using floating high impedance analog
inputs.
This allows
Figure 5-11 Position of the level
recording connections
– the incoming optical power to be documented, e.g. for later
measurement (aging, damage)
– a good/bad test to be carried out (limit value).
The measurement must be performed with a high-resistance, ungrounded voltmeter. The ground connector
must not be connected to the housing; otherwise the data traffic could be disturbed. To meet the EMC
requirements, the length of the connected measuring cables must not exceed 3 m. The quality of the bus traffic
can be estimated based on the receiving levels in the following diagram:
4,0
3,5
3,0
2,5
1,7
1,4
1,0
Normal operation, level sufficient
0,8
Measured voltage / V
2,0
0,6
0,4
0,2
Optical system reserve reduced
0,1
Function not guaranteed
˜
-26
-24
-22
-20
-18
-16
-14
-12
-10
-8
-6
0
-4
Receiving level at 660 nm / dBm
˜
-28
-26
-24
-22
-20
-18
-16
-14
-12
Receiving level at 860 nm / dBm
˜
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
-18
Receiving level at 1310 nm / dBm
Figure 5-12
Relationship between measured output voltage and signal quality
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
39
Installation and Maintenance
5.7 LED Displays and Troubleshooting
Notes:
For a valid measurement, that the partner OLM at the other end of the fiber-optic cable must
send normal PROFIBUS frames. This can be recognized by the LED display of the partner
OLM (see section 5.7.1).
The output voltages at the measurement sockets are influenced by many factors:
 strength of the optical transmit power of the partner OLM
 ambient temperature of the optical transmitter and receiver
 attenuation of the transmission line
 transmission rate used
The measurement sockets are therefore not intended as a substitute for a calibrated level
measuring device with a calibrated light source. The value obtained only serves to classify
the received optical signals in 3 classes:
 good
(normal operation, green)
5 V > U > 240 mV
 critical
(optical link margin reduced, yellow)
 bad
(functionality not guaranteed, red)
120 mV ≤ U ≤ 240 mV
U < 120 mV
The measurement must be performed with a standard ungrounded and high-resistance
voltmeter. The internal resistance of the measurement sockets is approx. 30 kΩ. A
connection from the measurement sockets or of reference potential to the OLM housing is
not permitted.
When an OLM of the SINEC L2FO type series is connected, the OLM V4 LED level indicator
has no meaning. The measurement sockets cannot be used.
5.7
LED Displays and Troubleshooting
5.7.1
Figure 5-13
40
LED displays
LED displays on the front panel
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.7 LED Displays and Troubleshooting
LED display
Possible causes
Signaling
contact
System
 lit green
- The transmission rate was detected and the voltage supply is ok
does not signal
 not lit
- Voltage supply outage (complete outage, with a redundant supply, outage
down of both supply voltages)
- Voltage supply connected wrongly
- Module defective
signals
 flashes red
Transmission rate not yet detected
- There is no transmitting bus node
- No connection to a partner module sending frames
- Transmit and receive fiber-optic cables are swapped over
- Transmission rate does not correspond to the PROFIBUS standard
- Only one single bus node is connected, which only sends token to itself. After
activation of a second bus node, the display must change (token frames are
not enough to set the transmission rate)
- The connected RS-485 segment is only terminated at one side
does not signal
  flashes
red/green
Transmission rate detected but
- The slot time of the network could not be detected yet (network parameter
HSA set too low, there is no transmitting bus node)
- One optical channel is set to “redundant optical ring“ mode but the second
one is not (this mode must always be set on both optical channels)
- The value for the slot time of the network is set too low
does not signal
 lit yellow
Signals are received on the RS-485 bus lines.
does not signal
 not lit
Bus node is not connected, does not signal
-Connected bus node is not turned on
- Interruption5 of one or both cores of the RS-485 bus line
does not signal
CH1, CH0
electrical
does not signal
- Short circuit1 or ground fault of cores of the RS-485 bus line
 flashes red/lit red
Sporadic disturbances because of
- Insufficient shielding of the RS-485 bus cable
- Open bus cable, this means the RS-485 bus cable is only connected at one
end
- RS-485 segment is not terminated or only at one end
- Removal/insertion of an RS-485 bus terminal or terminating plug
Permanent problem because
- Cores A and B of the RS-485 bus cable have been swapped over
- Short circuit1 on the RS-485 bus cable
- Transmission time exceeded due to a bus node in a bus segment connected
to channel 1 or 0
-Module and other bus nodes connected over channel 1 or 0, transmit at the
same time (e.g. because of duplicate address assignment or slot time set too
low or when restoring after segmentation in the optical line, see section 3.1.1 )
- RS-485 driver of the module defective (e.g. after lightning strike)
CH2, CH3
optical
5
signals
does not signal
Mode “Bus with fiber-optic link monitoring” and “redundant optical ring“
 lit yellow
PROFIBUS frames are received on the optical channel
does not signal
Depends on the cable length between RS485 interface and fault, and on baud rate. Can vary from one example to another.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
41
Installation and Maintenance
5.7 LED Displays and Troubleshooting
LED display
 not lit
Possible causes
Signaling
contact
Transmission rate not detected yet – LED “System“ flashes red
- There is no transmitting bus node
- Transmit and receive fiber-optic cables swapped over
-No partner module connected or partner module is not turned on
- Connected partner module is defective
does not signal
Transmission rate is detected – LED “System” is lit green
- When the mode “redundant optical ring“ is set, the
optical channel operates as standby channel. There is no problem in the OLM
or on the fiber-optic cable.
- If one of the modes “bus with fiber-optic link monitoring...“
is set, no frames are received on the optical
PROFIBUS channel. There is no error in the OLM or on the
fiber-optic cable.
 flashes yellow
Transmission rate is detected – LED “System” is lit green or flashes red/green
- There is no transmitting bus node (fiber-optic cable connection is ok)
does not signal
 lit red
- Transmit and receive fiber-optic cables are swapped over
- No partner module connected or partner module is not turned on
- Connected partner module is defective
- Transmission time exceeded by the connected partner module
- Interruption of a fiber-optic cable
- Fiber optic cable to the partner module longer than permitted
- Loose contact at a fiber-optic cable connector
- Fiber in the fiber-optic cable is loose
- When the channel LED of the two concerned OLMs continues to be lit red
after clearing a fiber-optic cable fault in the redundant optical ring
check that the setting of the parameter HSA described in section 3.3 is correct
signals
  flashes
red/yellow
- Periodically occurring error (see above) loose contact at a fiber-optic cable
connector
- Fiber in the fiber-optic cable is loose
- Only one single bus node is connected, which only sends token to itself.
After the activation of a second participant the LED display should stop

flashes red/yellow/off
A periodically alternating color (red-yellow-off) of the port LED in combination
with a green port level LED signalizes an optical overdrive of the corresponding
channel. For a possible fix of the problem it could be helpful to reduce the
transmit power (refer to section 4.2.3.6 for detail).
signals
signals
Mode “bus without fiber-optic link monitoring”
CH2, CH3
Level
Table 5-1
42
 lit yellow
PROFIBUS frames are received on the optical channel
does not signal
 Not lit
- There is no transmitting bus node
- Transmit and receive fiber-optic cables are swapped over
- No partner module connected or partner module is not active
- Connected partner module is defective
does not signal
 Lit green
Receiving level adequate, normal operation
 lit yellow
Receiving level critical, link power margin reduced
 Lit red
Receiving level inadequate, function not guaranteed
not relevant
Meaning of the LED displays and indication by the signaling contact
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.7 LED Displays and Troubleshooting
5.7.2
Troubleshooting
This section will help you to localize the problem after an error message (LED or signaling
contact). Refer to the description of the LED displays in section 5.7.1.
5.7.2.1
Error display of the System LED
See description of the LED displays in section 5.7.1.
5.7.2.2
Error display on CH1 / CH0
Check whether
 the DIL switch S0 (CH1) or S8 (CH0) is in position 1, when the OLM is in the electrical
star segment of a star topology (see section 3.2)
 the problem remains after removing the RS-485 connector.
Still there: Device defective6. Change the OLM.
Gone: The error is in the RS-485 bus segment.
Check:
– all RS-485 connectors as described in section 5.3
– the setup and the shielding of the RS-485 bus segment.
– the RS-485 bus segment using the PROFIBUS bus monitor
– the configuration of all bus nodes.
5.7.2.3
Error display on CH2 / CH3
1.
Check whether
 only modules of the same type are connected to each other optically (see chapter 3),
 the optical fiber is permitted for the module type being used and does not exceed the
permitted length (see Table 2-1).
 the optical channels connected via fiber-optic cables are set to the same mode. (see
section 4.2.3)
 the ends of the fiber-optic cables and the optical transmission and receiving components
are clean
 the fiber-optic cable connectors are connected completely and correctly,
 the requirements of section 5.1.2 were met when connecting and laying the optical bus
cables.
6
Does not apply if the monomaster of a PROFIBUS network is connected to the RS-485 bus segment to be tested. In this case, swap the
suspect OLM with another OLM from the network and then carry out the test mentioned above.
If the error moves with the OLM, the device is defective. Replace the OLM.
If the error does not move with the OLM, the disturbance originates in the RS-485 bus segment. Take measures as described above.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
43
Installation and Maintenance
5.8 Maintenance
2.
Detect the optical receive level (section 5.6):
 Check the fiber-optic cable attenuation with an optical level meter if the level is in the
range “function not guaranteed” or “optical link power margin reduced". If the attenuation
is too high, replace the fiber-optic cable. If the attenuation is within the valid range, one of
the two OLMs of the disturbed segment is defective. First, replace the OLM which
supplies the signal for the measurement mentioned above. If the problem remains,
replace the other OLM instead. If there is no optical level meter at hand, you can still get
an idea of where the problem lies simply by swapping over both fiber-optic cables at both
OLMs: if the problem moves along with the cables, the cable is almost certainly faulty, if it
does not, the problem is in one of the OLMs.
 If the level is in the range “normal operation”, first check the transmitting OLM, as
described above, and then the receiving OLM, if necessary.
 If the level of both OLMs of the disturbed fiber-optic cable segments is within the range
“optical link power margin reduced” or “normal operation”, one of the two OLMs of the
disturbed fiber-optic cable segment is defective. In this case replace one OLM of the
disturbed fiber-optic cable segment first. If the error persists, replace the other OLM
instead.
5.7.2.4 Level display lit yellow or red
For active interfaces see previous section 5.7.2.3.
The level display cannot normally be deactivated. If you want to have the (correctly)
displayed red level of an unused optical interface changed to green, a "short circuit" must be
arranged from the transmitter to the receiver of the channel involved using a suitable fiberoptic cable. At the same time, the monitoring for this channel must be active. This means for
channel 2, the S1 and S2 switches are turned off and for channel 3, the S3 and S4 switches.
The channel display (yellow LED) remains off and the corresponding level LED is green.
5.8
Maintenance
The OLMs V4.0 are maintenance-free. It is also not possible to make any calibrations on the
OLM V4.0. There are no elements whatsoever inside the OLM V4.0 housing that need to be
touched by engineers or users. The only controls are the DIL switches are accessible from
the outside.
The devices have a resettable fuse (PTC). If the fuse trips (all LEDs go off despite correctly
applied power supply), the device should be disconnected from the power supply for
approximately 30 minutes before it can be turned on again.
If solvents or similar chemicals are used in the vicinity, the user should periodically inspect
the visible plastic parts of the OLM V4.0 (DIL switches). If there are any signs of changes,
the OLM V4.0 should be replaced.
If any other fault develops, please send the device to your SIEMENS service center for
repair. Repairs on-site are not possible.
44
Telefon
Fax
Technical Support
+49 (0)911 895-7222
+49 (0)911 895-7223
Field Service
+49 (0)911 895-7444
+49 (0)911 895-7445
Spare Parts / Repair
+49 (0)911 895-7448
+49 (0)911 895-7449
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Installation and Maintenance
5.9 Cleaning
5.9
Cleaning
If it becomes necessary to clean the device, this must be done with a dry, lint-free cloth. Do
not use water or solvent! If liquids get into the device, it must be deactivated.
When cleaning the device, make sure that no dirt enters the optical transmission path or gets
onto the optical components. This means either that the fiber-optic cables remain connected
or you fit the supplied protective caps!
5.10 Configuration
Because of frame delays due to cables, network components and monitoring mechanisms in
the network components, the PROFIBUS network parameter "slot time" must be adapted to
the network span, the network topology and the data rate when configuring the network.
5.10.1
Configuring optical bus and star topologies
You configure the PROFIBUS network, for example with SIMATIC STEP 7 (V5) or COM
PROFIBUS (V5). You enter the number of OLMs and overall cable length in a configuration
dialog. The configuration tools then check whether the slot time can be retained in the
chosen communication profile. If the limit is exceeded due to the extra delays caused by
OLMs and fiber-optic cables, a warning message is displayed and the parameters are
adapted.
5.10.2
Configuring redundant optical rings
The following configuration requirements must be met in the redundant optical ring (see
section 3.3 for details):
 One unused address lower than the HSA
(1)
 Increase of the retry value to at least 3
(2)
 Checking and adaptation of the slot time
(3)
Use the user-specific profile of the configuration tool to set the parameters under (2) and (3).
Calculate the slot time based on the following equation:
Slot time = a + (b * Length FOC) + (c * Number OLM)
Slot time
is the monitoring time in bit times
Length FOC
is the sum of all fiber-optic cables (segment lengths) in the network.
The length must be entered in km!
Number OLM
is the number of the PROFIBUS OLMs in the network.
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
45
Installation and Maintenance
5.10 Configuration
The factors a, b and c depends on the transmission speed and can be found in the following
table:
Data rate
12 Mbps
7
7
6 Mbps
7
3 Mbps
7
1.5 Mbps
500 Kbps
187.5 Kbps
93.75 Kbps
45.45 Kbps
19.2 Kbps
9.6 Kbps
Table 5-2
a
b
c
1651
240
28
951
120
24
551
60
24
351
251
171
171
851
171
171
30
10
3.75
1.875
0,909
0,384
0,192
24
24
24
24
24
24
24
Constants for calculating the slot time
for DP-standard (redundant optical ring)
Data rate
a
b
c
12 Mbps
7
6 Mbps
7
3 Mbps
1651
951
240
120
28
24
7
7
1.5 Mbps
500 Kbps
187.5 Kbps
93.75 Kbps
45.45 Kbps
19.2 Kbps
9.6 Kbps
Table 5-3
551
60
24
2011
771
771
451
851
181
171
30
10
3.75
1.875
0.909
0.384
0.192
24
24
24
24
24
24
24
Constants for calculating the slot time for
DP/FMS (”universal“) and DP with S5 95U (redundant optical ring)
The slot time calculation only takes into account the optical network and the connection of
bus nodes to the OLM via a RS-485 bus segment each with a maximum length of 20 m.
Longer RS-485 bus segments are included in the calculation by adding them to the length of
the fiber-optic cables.
Note:
If the value of the slot time is configured too low, this can lead to malfunctions and error
messages on the OLM. The system LED flashes red/green.
7
With OLM / G11-1300 and OLM / G12-1300, minimum slot times must be maintained according to the following table at data rates of 12
Mbps, 6 Mbps, 3 Mbps and 1.5 Mbps:
Data rate
Minimum slot time
12 Mbps
3800 tBit
6 Mbps
2000 tBit
3 Mbps
1000 tBit
1.5 Mbps
530 tBit
If the calculated slot time is shorter than the minimum slot time, use the minimum slot time from the table above as the configured slot time.
46
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
6
6.1
6
Approvals and Marks
CE Mark
Product name SIMATIC NET
SIMATIC NET OLM / P11 V4.0
6GK1 503-2CA00
SIMATIC NET OLM / P12 V4.0
6GK1 503-3CA00
SIMATIC NET OLM / P22 V4.0
6GK1 503-4CA00
SIMATIC NET OLM / G11 V4.0
6GK1 503-2CB00
SIMATIC NET OLM / G12 V4.0
6GK1 503-3CB00
SIMATIC NET OLM / G22 V4.0
6GK1 503-4CB00
SIMATIC NET OLM / G12-EEC V4.0
6GK1 503-3CD00
SIMATIC NET OLM / G11-1300 V4.0
6GK1 503-2CC00
SIMATIC NET OLM / G12-1300 V4.0
6GK1 503-3CC00
CE Mark for the following SIMATIC NET products:
OLM / P11 V4.0
OLM / P12 V4.0
0344
OLM / P22 V4.0
OLM / G11 V4.0
OLM / G12 V4.0
OLM / G22 V4.0
OLM / G12-EEC V4.0
CE Mark for the following SIMATIC NET products:
OLM / G11-1300 V4.0
OLM / G12-1300 V4.0
EMC directive The SIMATIC NET products above meet the requirements for the following EC directives:
Directive 2004/108/EC
“Electromagnetic compatibility“
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
47
Approvals and Marks
6.2 c-tick
Area of Application
The products are designed for use in an industrial environment:
Area of Application
Requirements
immunity
emission
Industrial area
EN 61000-6-4 : 2007
(replaces EN 50082-2)
EN 61000-6-2 : 2005
(replaces EN 50081-2)
Installation guidelines
The products meet the requirements if you keep to the installation instructions and safetyrelated notices as described in these instructions and in the “SIMATIC NET PROFIBUS
Networks” /1/ manual when installing and operating the device.
Conformity certificates
The EC Declaration of Conformity is available for the responsible authorities according to the
above-mentioned EC Directive at the following address:
Siemens Aktiengesellschaft
Industry Sector Industry Automation Division
Industrielle Kommunikation (I IA SC CI)
Postfach 4848
D-90026 Nürnberg, Germany
Notes for the manufacturers of machines
The products are not machines in the sense of the EC Machinery Directive. There is
therefore no declaration of conformity relating to the EC Machinery Directive for these
products.
If the products are part of the equipment of a machine, they must be included in the
procedure for the declaration of conformity by the manufacturer of the machine.
General notice concerning the approvals
The listed approvals are valid only when the corresponding marks are shown on the product.
6.2
c-tick
Australia
This product meets the requirements of the AS/NZS 3548 standard.
6.3
KC (Korean Standard)
Korea
This product meets the requirements of the Korean standard.
48
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Approvals and Marks
6.4 FM approval
6.4
FM approval
CL.1, DIV.2, GP. A,B,C,D, T4
CL.1, Zone 2, GP. IIC, T4
Ta: -20 °C .. +60 °C (model OLM / G12 EEC, only)
Ta: 0 °C .. +60 °C
(all other models)
6.5
Ex approval
Models: OLM / P11 V4.0, OLM / P12 V4.0, OLM / P22 V4.0, OLM / G11 V4.0, OLM / G12 V4.0,
OLM / G22 V4.0, OLM / G12-EEC V4.0
II 3 (2) G Ex nA [op is GB] IIC T4 Gc
DEKRA 11ATEX0060 X
EN 60079-15:2005
EN 60079-0:2009
EN 60079-28:2007
0344
Models: OLM / G11-1300 V4.0, OLM / G12-1300 V4.0
II 3 G Ex nA IIC T4 Gc
KEMA 07ATEX0145 X
EN 60079-15:2005
EN 60079-0:2009
6.6
UL approval (U.S. and Canada)
c(UL)us LISTED
IND. CONT. EQ.: 69B1
I.T.E.for HAZ. LOC.: 21BP
CLASS 1, DIV. 2 GROUP A; B; C; D T4
CLASS 1, Zone2, GP. IIC, T4
CLASS 1, Zone2, Aex nC IIC, T4
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
49
Approvals and Marks
6.7 Shipbuilding approvals
WARNING - Exposure to some chemicals may degrade the sealing properties of materials
used in the following devices:
Relay K600 – materials used
Manufacturer 1, Song Chuan:
base:
dust cover:
sealing compound:
PA66
PBT
Eccobond (Emerson & Cuming)
Manufacturer 2, Hongfa:
base, dust cover, card:
sealing compound:
6.7
PBT 3316 (E213445);
6060RP (Well-Ta Chemical Company Limited)
Shipbuilding approvals
The devices of the OLM V4.0 series also meet several requirements for shipbuilding. For the
respectively valid approvals call our hotline +49-911-895-7222.
Furthermore you can gather information at:
http://support.automation.siemens.com
50
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
7
7.1
References
7
References
Sources of information and other documentation
1. SIMATIC NET PROFIBUS networks
order numbers:
C79000-G8900-C124-03 German
C79000-G8976-C124-03 English
C79000-G8977-C124-03 French
C79000-G8972-C124-03 Italian
2. EN 50170-1-2 1996: “General Purpose Field Communication System“, Volume 2
“Physical Layer Specification and Service Definition“
3. DIN 19245: “Measurement and Control; PROFIBUS Part 3; Process Field Bus;
Decentralized Peripherals (DP)”
4. EIA Standard RS–485 (April 1983): “Standard for electrical characteristics of generators“
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
51
8
Drawings
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
8
53
Drawings
54
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
Glossary
BFOC
Bayonet Fiber Optic Connector
DIN
EEC
Deutsches Institut für Normung
[German Institute for Standardization]
Extended Environmental Conditions
EIA
Electronic Industries Association
EN
European standard
EMC
Electromagnetic Compatibility
HCS™
Hard Polymer Cladded Silica Fiber
(registered trademark of Ensign-Bickford)
HSA
Highest Station Address
IEC
International Electrotechnical Commission
LED
Light Emitting Diode
OBT
Optical Bus Terminal
OLM
Optical Link Module
PCF
Polymer Cladded Fiber
(similar to HCS™)
PNO
PROFIBUS User Organization
SELV
Safety Extra Low Voltage
TSDR MIN
Time Station Delay Responder Minimum
UL
Underwriter Laboratories
VDE
Verband der Elektrotechnik Elektronik Informationstechnik
[Association for Electrical, Electronic & Information
Technologies]
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
55
Index
A
N
ATEX, 47
Network topology
bus (linear) topology, 7
point-to-point-connection, 7
redundant optical ring, 7
ring topology, 11
star topology, 7, 10
C
CE mark, 45
Compatibility, 22
C-tick mark, 46
O
D
DIL switch, 22
E
Electromagnetic compatibility, 27
Optical link power budget, 29
Optical star topology, 3
overdrive, optical, 25, 40
R
Redundant ring, 11
Revision, 25
F
FM approval, 47
Fuse, 42
I
Installation options, 32
K
S
Segment monitoring, 23, 24
Shielded cables, 29
SINEC L2FO, 22
U
UL approval, 47
KC mark, 46
L
line lengt, minimum, 25
Link power margin, 29
M
Mode, 22
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03
57
Index
Index-58
SIMATIC NET PROFIBUS Optical Link Module OLM V4.0
Operating Instructions, 01/2013, C79000-G8976-C270-03