Siemens SIMATIC NET User manual

SIMATIC NET
Network components
12M bus terminal
Operating Instructions
06/2022
C79000-G8976-C333-02
Preface
Introduction 1
Installation 2
Maintenance and cleaning 3
Technical speci󹪝cations 4
Approvals 5

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.
Quali󹪝ed Personnel
The product/system described in this documentation may be operated only by personnel quali󹪝ed for the speci󹪝c
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Quali󹪝ed 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
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.
Trademarks
All names identi󹪝ed 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.
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
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C333-02
Ⓟ 06/2022 Subject to change
Copyright © Siemens AG 2013 - 2022.
All rights reserved

Preface
Documentation
You will 󹪝nd information on the use of this product in the following sources:
• in the product documentation
• in the SIMATIC NET PROFIBUS Networks manual
The manual is available on the Internet pages of Siemens Industry Online Support under the
following entry ID:
35222591 (http://support.automation.siemens.com/WW/view/en/35222591)
• in the SIMATIC NET Industrial Communication catalog IK PI
You can request the catalog and additional information from your Siemens representative.
Contact person
If you cannot 󹪝nd the answer to a technical question about the use of this product in the sources
quoted, contact your Siemens representative in the agencies or o󹪟ces responsible for your area.
The addresses are listed:
• in our catalog IK PI
• on the Internet pages of Siemens Industry Online Support (http://
support.automation.siemens.com)
Frequently asked questions
Our customer support on the Internet provides useful information and answers to frequently
asked questions. Here you will 󹪝nd information about the entire product spectrum in the area
Support > FAQs (Frequently Asked Questions): http://www.automation.siemens.com/.
Hotline
Our hotline is also available to deal with problems:
• Phone
0911-895-7222
(from abroad [phone])
• Telefax
0911-895-7223
(from abroad [phone])
• E-mail
[email protected]
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 3

Security information
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is necessary
to implement – and continuously maintain – a holistic, state-of-the-art industrial security
concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected to
an enterprise network or the internet if and to the extent such a connection is necessary and only
when appropriate security measures (e.g. 󹪝rewalls and/or network segmentation) are in place.
For additional information on industrial security measures that may be implemented, please
visit
https://www.siemens.com/industrialsecurity (https://www.siemens.com/industrialsecurity).
Siemens’ products and solutions undergo continuous development to make them more secure.
Siemens strongly recommends that product updates are applied as soon as they are available
and that the latest product versions are used. Use of product versions that are no longer
supported, and failure to apply the latest updates may increase customer’s exposure to cyber
threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS Feed
under
https://www.siemens.com/cert (https://www.siemens.com/cert).
Device defective
If a fault develops, send the device to your SIEMENS representative for repair. Repairs on-site are
not possible.
Recycling and disposal
The products are low in pollutants, can be recycled and meet the requirements of the WEEE
directive 2012/19/EU for the disposal of electrical and electronic equipment.
Do not dispose of the products at public disposal sites.
For environmentally friendly recycling and the disposal of your old device contact a certi󹪝ed
disposal company for electronic scrap or your Siemens contact (Product return (https://
support.industry.siemens.com/cs/ww/en/view/109479891)).
Note the di󹪜erent national regulations.
Trademarks
The following and possibly other names not identi󹪝ed by the registered trademark sign ® are
registered trademarks of Siemens AG:
SCALANCE, C-PLUG, OLM
Preface
12M bus terminal
4Operating Instructions, 06/2022, C79000-G8976-C333-02

Table of contents
Preface ................................................................................................................................................... 3
1 Introduction ........................................................................................................................................... 7
1.1 Included in shipment ........................................................................................................... 7
1.2 Description of the product.................................................................................................... 7
1.3 Compatible devices............................................................................................................ 10
2 Installation........................................................................................................................................... 11
2.1 Important notes on using the device .................................................................................. 11
2.2 Mounting and attaching the bus cable(s) ........................................................................... 15
2.3 Grounding measures.......................................................................................................... 18
2.4 Disassembly....................................................................................................................... 19
3 Maintenance and cleaning .................................................................................................................. 21
4 Technical speci󹪝cations ....................................................................................................................... 23
5 Approvals............................................................................................................................................. 25
5.1 Note for Australia............................................................................................................... 28
Index .................................................................................................................................................... 31
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 5

Table of contents
12M bus terminal
6Operating Instructions, 06/2022, C79000-G8976-C333-02

Introduction 1
1.1 Included in shipment
• 12M bus terminal order no. 6GK1 500-0AA10
1.2 Description of the product
Function
The 12M bus terminal is used to attach data terminal equipment (DTE) with an RS-485 interface
to a bus cable.
Note
A maximum of 32 12M bus terminals can be connected to one bus segment.
If other components, such as repeaters are connected to a bus segment, this reduces the
maximum number of 12M bus terminals that can be connected.
Operator controls
The bus terminal consists of the following elements and controls:
• 1 terminal block with 6 terminals for wires with a cross-sectional area of ≤ 1.5 mm2
With this terminal block you can connect the incoming and outgoing bus cable and, if
necessary, Protective Earth (PE).
• Screw down clamps for shield contact
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 7

• 2 switches:
– right-hand switch ("Termination")
With the right-hand switch, you can terminate the end of an incoming, electrical segment
(A1, B1) with the characteristic impedance (switch on). At the same time, the outgoing,
electrical segment (A2, B2) is interrupted.
– left-hand switch
With the left-hand switch you can set the range of the transmission speed 9.6 kbps... 1.5
Mbps and 3 Mbps...12 Mbps.
• A 1.5 m long spur line with a 9-pin D-sub male connector
You can connect a DTE directly to this spur line.
3($%$%3(RIIRQRIIRQN0007HUPLQDWLRQ5
Figure 1-1 Operator controls
Terminal block
Short name Meaning
PE Protective earth connected to the cable shield and DIN rail
A1 Signal line A of the incoming segment side
B1 Signal line B of the incoming segment side
A2 Signal line of the outgoing segment side
B2 Signal line of the outgoing segment side
PE Protective earth connected to the cable shield and DIN rail
Terminal block
The following is recommended for PROFIBUS:
• Terminal A - green wire
• Terminal B - red wire
Termination
Activate the termination on the 󹪝rst and last node of the bus segment.
If termination is activated (termination on), the connection between the incoming (A1, B1) and
outgoing (A2, B2) segment is interrupted. If the wrong bus terminating resistors are activated,
it is no longer possible to access stations downstream from the bus terminal. When a segment
is put into operation, there must therefore be no bus terminating resistors activated that are not
located at the start or end of the network.
Introduction
1.2 Description of the product
12M bus terminal
8Operating Instructions, 06/2022, C79000-G8976-C333-02

D-sub male connector
The D-sub male connector is plugged into the D-sub female connector of the DTE and secured
by screws. The 12M bus terminal requires a current of 90 mA with a voltage of 5 V supplied by
the DTE between pins 5 (M5) and 6 (P5) of the D-sub male connector.
Pin no. Short name Meaning
1 PE Protective earth, connected to the cable shield
2 nc
3 B (RxD/TxD-P) Signal line B
4 nc
5 M5 (DGND) Chassis connection of the 5 volt supply
6 P5 (VP) + 5 volt connection, 90 mA required
7 nc
8 A (RxD/TxD-N) Signal line A
9 nc
Casing PE Protective earth, connected to the cable shield
D-sub male connector pinout
The impedance of the PROFIBUS interface when receiving must be ≥ 10 kilohms (according to
the EIA standard RS-485). The spur line must not be terminated.
Segment length and transmission speed
Transmission speed maximum segment length
9.6 - 187.6 kbps 800 m
500 kbps 400 m
1.5 Mbps 200 m
3 - 12 Mbps 100 m
Permitted segment lengths
Bus cable for PROFIBUS, standard type (see catalog IK PI).
Note
Restriction when using the 12M bus terminal at 500 kbps
This restriction only a󹪜ects segments longer than 80 m.
If the 12M bus terminal is used at a transmission rate of 500 kbps along with several RS-485 bus
terminals with a spur line length of 3.0 m, a minimum distance of 5 m of PROFIBUS cable must
be maintained between two RS-485 bus terminals.
You can locate 12M bus terminals anywhere in the segment; there is no minimum distance
between them that needs to be kept to. You can also arrange a 12M bus terminal between two
RS-485 bus terminals with 3.0 m spur lines if you make sure that the PROFIBUS cable between
two RS-485 bus terminals has a total length of at least 5 m.
Introduction
1.2 Description of the product
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 9

1.3 Compatible devices
Table 1-1 Connectable devices that can supply 90 mA at 5V.
Name Master slave Comments BT12M can be used
SIMATIC S5
IM 308-C M + S yes
CP 5431 FMS/DP M yes
S5-95U/DP M + S yes
SIMATIC S7-200
CPU 215-DP S yes
CP 242-8 S yes
SIMATIC S7-300
CP 342-5 M + S yes
CP 343-5 M yes
CPU 313/314/315/316 M yes
CPU 315-2 DP M + S yes
SIMATIC S7-400
CP 342-5 M + S yes
CP 413-2 DP M yes
CPU 414-2 DP M yes
PC modules
CP 5412A2 M yes
CP 5411 M yes
CP 5611 M yes
CP 5613 M yes
Distributed I/O
ET 200M S via IM 153 yes
ET 200U S via IM 318-C yes
ET 200B S all versions yes
Miscellaneous
RS-485 repeater - yes
OLM-V3 - yes
DP/RS485 S DP interface module for line
circuit breaker
3WN6 (only 0..60 °)
yes
DP/AS-i Link IP20 S AS-i connection to PROFIBUS
DP,
degree of protection IP20
yes
TI
SIMATIC 505-FIM M Slave SIMATIC 505-6870
PROFIBUS-DP RBC
Master complete SIMATIC 505
series
yes
Introduction
1.3 Compatible devices
12M bus terminal
10 Operating Instructions, 06/2022, C79000-G8976-C333-02

Installation 2
CAUTION
To prevent injury and damage, read the manual before using the device.
2.1 Important notes on using the device
Read the safety notices
Note the following safety notices. These relate to the entire working life of the device.
WARNING
Power supply
The device is designed for operation with a directly connectable safety extra low voltage (SELV)
from a limited power source (LPS).
The power supply therefore needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (LPS) complying with IEC
60950‑1 / EN 60950‑1 / VDE 0805‑1 or IEC 62368-1 / EN 62368-1 / VDE 62368-1 may be
connected to the power supply terminals.
• The power supply unit for the device must meet NEC Class 2 according to the National
Electrical Code (r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
WARNING
If a device is operated in an ambient temperature of more than 60 ℃, the temperature of the
device housing may be higher than 70 °C. The device must therefore be installed so that it is
only accessible to service personnel or users that are aware of the reason for restricted access
and the required safety measures at an ambient temperature higher than 60 ℃.
WARNING
If the cable or conduit entry point exceeds 70 °C or the branching point of conductors exceeds
80 °C, special precautions must be taken. If the equipment is operated in an air ambient in
excess of 60 ℃, only use cables with admitted maximum operating temperature of at least 80
℃.
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 11

NOTICE
Improper mounting
Improper mounting may damage the device or impair its operation.
• Before mounting the device, always ensure that there is no visible damage to the device.
• Mount the device using suitable tools. Observe the information in the respective section
about mounting.
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
Do not open the device when the supply voltage is turned on.
WARNING
EXPLOSION HAZARD
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
WARNING
The device is intended for indoor use only.
WARNING
The device may only be operated in an environment of contamination class 1 or 2 (see EN/IEC
60664-1, GB/T 16935.1).
WARNING
When used in hazardous environments corresponding to Class I, Division 2 or Class I, Zone 2,
the device must be installed in a cabinet or a suitable enclosure.
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a 󹪞ammable or combustible
atmosphere is present.
Installation
2.1 Important notes on using the device
12M bus terminal
12 Operating Instructions, 06/2022, C79000-G8976-C333-02

WARNING
Unsuitable cables or connectors
Risk of explosion in hazardous areas
• Only use connectors that meet the requirements of the relevant type of protection.
• If necessary, tighten the connector screw connections, device fastening screws, grounding
screws, etc. according to the speci󹪝ed torques.
• Close unused cable openings for electrical connections.
• Check the cables for a tight 󹪝t after installation.
WARNING
Lack of equipotential bonding
If there is no equipotential bonding in hazardous areas, there is a risk of explosion due to
equalizing current or ignition sparks.
• Ensure that equipotential bonding is available for the device.
WARNING
Unprotected cable ends
There is a risk of explosion due to unprotected cable ends in hazardous areas.
• Protect unused cable ends according to IEC/EN 60079-14.
WARNING
Improper installation of shielded cables
There is a risk of explosion due to equalizing currents between the hazardous area and the non-
hazardous area.
• Ground shielded cables that cross hazardous areas at one end only.
• Lay a potential equalization conductor when grounding at both ends.
WARNING
Insu󹪟cient isolation of intrinsically safe and non-intrinsically safe circuits
Risk of explosion in hazardous areas
• When connecting intrinsically safe and non-intrinsically safe circuits, ensure that the
galvanic isolation is performed properly in compliance with local regulations (e.g. IEC
60079-14).
• Observe the device approvals applicable for your country.
Installation
2.1 Important notes on using the device
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 13

Notes for use in hazardous locations according to ATEX, IECEx, UKEX and CCC Ex
If you use the device under ATEX, IECEx, UKEX or CCC Ex conditions you must also keep to the
following safety instructions in addition to the general safety instructions for protection against
explosion:
WARNING
To comply with EU Directive 2014/34 EU (ATEX 114), UK-Regulation SI 2016/1107 or the
conditions of IECEx or CCC-Ex, the housing or cabinet must meet the requirements of at least
IP54 (according to EN/IEC 60529, GB/T 4208) in compliance with EN IEC/IEC 60079‑7, GB
3836.8.
WARNING
If the temperature of the cable or housing socket exceeds 60 °C or the temperature at the
branching point of the cables exceeds 80 °C, special precautions must be taken. If the
equipment is operated in an air ambient in excess of 60 ℃, only use cables with admitted
maximum operating temperature of at least 80 ℃.
WARNING
Transient overvoltages
Take measures to prevent transient overvoltages of more than 40% of the rated voltage (or
more than 119 V). This is the case if you only operate devices with SELV (safety extra-low
voltage).
Safety notices when using the device according to Hazardous Locations (HazLoc)
If you use the device under HazLoc conditions you must also keep to the following safety notices
in addition to the general safety notices for protection against explosion:
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-hazardous
locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations only.
WARNING
EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
Installation
2.1 Important notes on using the device
12M bus terminal
14 Operating Instructions, 06/2022, C79000-G8976-C333-02

2.2 Mounting and attaching the bus cable(s)
Installation
Types of installation
The 12M bus terminal can be mounted in three di󹪜erent ways:
• By snapping it on to a 35 mm DIN rail according to DIN EN50022-35x7.5
• By screwing it to a mounting plate (refer to the section "Drilling template") using two cheese
head screws.
• Wall mounting (brick, concrete). You require 2 type 5 plugs, 2 half-round wood screws
DIN 96, size 3.5 , L70 and two washers DIN 125‑4.3.
Note
Please make sure that the 12M bus terminal is accessible for maintenance and installation work
even during operation.
Drilling template
The following 󹪝gure shows the drilling template for screw fastening.
PPPPPPPP
①Top edge of the 12M bus terminal
②M4 thread or 4.2 mm hole
Figure 2-1 Drilling template for the 12M bus terminal
Connecting up
Follow the steps below to connect the bus cable:
1. Open the bus cable at the point at which the bus terminal will be inserted.
2. Strip approximately 33 mm of the outer jacket. Make sure that the braided shield is not
damaged when you strip the jacket.
Installation
2.2 Mounting and attaching the bus cable(s)
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 15

3. Shorten the braided shield and foil shield to a length of approximately 12 mm (the foil shield
can be left somewhat longer) and shorten the two 󹪝llers to a length of approximately 12 mm.
PPPPPP
①Filler
②Foil shield
③Fold back braided shield over the cable jacket
4. Fold back the braid shield over the cable jacket.
5. Strip approximately 10 mm from the end of the wires.
6. Fit the bus cable to the terminal so that the braided shield is lying directly under the cable
clamp.
7. Screw the ends of the wires to the appropriate terminals (if the cores are stranded, for
example, the trailing cable, 0.25 mm2 wireend ferrules complying with DIN 46228 must be
used).
8. If the bus terminal is at the start or end of a segment, the integrated terminator must be
activated (switch set to Termination on).
Note
The shield clamps are used solely to contact the shields and are not suitable as strainrelief
clamps. This means that the bus cables must be secured as close as possible to the 12M bus
terminals to provide mechanical strain relief.
Note
If the terminating resistor is activated (permitted only at the segment ends), the terminal pair
A1, B1 must be used (A2, B2 are disconnected from the segment).
During operation of the bus terminal in the segment, it requires 5 V to be supplied by the DTE.
The DTE must therefore be turned on and the D-sub male connector inserted and secured by
screws! Due to the necessary termination at the start and end of the segment, the DTE
connected there must not be turned o󹪜.
Note
The same wires (green or red) must always be connected to the same terminal A or B in all bus
terminals (and with all bus connectors) and be uniform throughout the segment.
Installation
2.2 Mounting and attaching the bus cable(s)
12M bus terminal
16 Operating Instructions, 06/2022, C79000-G8976-C333-02

Note
The 12M bus terminal may only be plugged into a PROFIBUS interface when the power is o󹪜.
The following scheme is recommended for a PROFIBUS LAN:
• Connector A: green wire
• Connector B: red wire
Installation
2.2 Mounting and attaching the bus cable(s)
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 17

2.3 Grounding measures
If the 12M bus terminal is mounted on a DIN rail, the shield clamp makes largearea contact with
the rail via an internal spring. To connect the cable shield with local ground, a connection
between the DIN rail to local earth is adequate (this should be kept as short as possible).
$3($%%3($3($%%3($3($%%3($3($%%3(0RQWDJHDXIHLQHPJHHUGHWHQ6FKUDQNEOHFKPLW1RUPSURILOVFKLHQH$EVFKOXVVZLGHUVWDQG]XJHVFKDOWHW0RQWDJHDXIHLQHP6FKUDQNEOHFKPLW%HIHVWLJXQJVVFKUDXEHQ$EVFKOXVVZLGHUVWDQG]XJHVFKDOWHW:DQGEHIHVWLJXQJPLW%HIHVWLJXQJVVFKUDXEHQ
①Grounding bar
②Shield clamp rail
Figure 2-2 Ways of installing and grounding the 12M bus terminal
Note
The grounding bar and local ground must be connected together with Cu wire with an adequate
cross-sectional area over the shortest distance possible.
Installation
2.3 Grounding measures
12M bus terminal
18 Operating Instructions, 06/2022, C79000-G8976-C333-02

Note
The DIN rail must have a good conducting surface.
Note
If you mount the bus terminal on a wall, connect at least one PE terminal to local ground. This
connection should be over the shortest possible distance.
2.4 Disassembly
WARNING
Improper disassembly
Improper disassembly may result in a risk of explosion in hazardous areas.
For proper disassembly, observe the following:
• Before starting work, ensure that the electricity is switched o󹪜.
• Secure remaining connections so that no damage can occur as a result of disassembly if the
system is accidentally started up.
Installation
2.4 Disassembly
12M bus terminal
Operating Instructions, 06/2022, C79000-G8976-C333-02 19

Installation
2.4 Disassembly
12M bus terminal
20 Operating Instructions, 06/2022, C79000-G8976-C333-02