Metra Electronics ELS NET User manual

Metra NET Network Installation Manual

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Metra NET Network - Installation Manual
Table of contents
Metra NET Network Installation Manual ................................................................................................ 4
Metra NET Network description ......................................................................................................... 4
Terminology ........................................................................................................................................ 5
Network installation products ............................................................................................................ 6
Network Splitter ............................................................................................................................. 6
Network Repeater 2 ....................................................................................................................... 6
Network Repeater 8 ....................................................................................................................... 6
Network Controller / Repeater Mounting Plate for 19’’ rack......................................................... 7
Network Terminator 120 ................................................................................................................ 7
Network Terminator 240 ................................................................................................................ 7
Emergency Open Push-Button ....................................................................................................... 7
Connecting cable for Metra Devices............................................................................................... 8
Mounting Network installation products............................................................................................ 8
Mounting Network Splitter............................................................................................................. 8
Mounting Network Repeater 2 to the Network Controller / Repeater Mounting Plate for 19’’
rack ................................................................................................................................................. 8
Mounting Network Repeater 8 to the Network Controller / Repeater Mounting Plate for 19’’
rack ................................................................................................................................................. 9
Mounting Network Controller TCP/IP to the Network Controller / Repeater Mounting Plate for
19’’ rack .......................................................................................................................................... 9
Mounting Network Controller NET to the Network Controller / Repeater Mounting Plate for 19’’
rack ............................................................................................................................................... 10
Metra NET Network .......................................................................................................................... 10
Metra NET Network termination.................................................................................................. 11
Network Repeater and Network Controller internal line termination......................................... 11
Maximum number of devices on “Metra NET Network”.................................................................. 12
Line topology..................................................................................................................................... 12
Simple ”V” topology......................................................................................................................... 12
Star topology –Using Network Repeater 2 ...................................................................................... 13
Star Topology - Two Network Repeaters 2................................................................................... 13
Star Topology - Three Network Repeaters 2 ................................................................................ 14
Star Topology - Four Network Repeaters 2 .................................................................................. 15
Star topology –Using Network Repeater 8 ...................................................................................... 16

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Metra NET Network - Installation Manual
Line topology –Using Master and Slave Network Controllers TCP/IP.............................................. 17
Network Lines longer than 1 km....................................................................................................... 17
2km Network ................................................................................................................................ 17
4km Network ................................................................................................................................ 18
Connecting Metra devices to “Metra NET Network” ....................................................................... 18
Metra device connection via additional Network Splitter ........................................................... 19
Metra device direct connection.................................................................................................... 20
UTP cable signals description for Metra NET Network..................................................................... 21
Different Metra NET Network connectors on Metra devices........................................................... 22
Phoenix MSTB 2,5/ 4-ST-5,08 connector...................................................................................... 22
Detachable connectors................................................................................................................. 22
WAGO 256 connectors ................................................................................................................. 23
UTP connector .............................................................................................................................. 23
Appendix ........................................................................................................................................... 24

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Metra NET Network - Installation Manual
Metra NET Network Installation Manual
Manufacturer:
Metra Inženiring d.o.o.
IOC Trzin
Špruha 19
SI-1236 Trzin, Slovenia
phone:
fax:
web:
[phone]
[phone]
www.metra.si
System:
Metra ELS NET, Metra LCC NET, Metra ELS
Declaration of Conformity:
The Metra ELS products have been developed, designed and
manufactured in accordance with the EU directive for Electromagnetic
Compatibility (2004/108/EC).
Metra NET Network - Installation Manual [rev.1-270810]
2010 Metra inženiring d.o.o.
All Rights reserved.
No part of this manual may be reproduced in any form or by any means without prior written permission of Metra inženiring d.o.o.
The contents of this manual are subject to change without notice.
All efforts have been made to ensure the accuracy of the contents of this manual, however, should any errors be detected, Metra inženiring would greatly appreciate being informed of
them.
Metra inženiring d.o.o. can assume no responsibility for any errors in this manual.
Metra NET Network description
“Metra NET network” is based on industry standard CAN bus networking system to interconnect
different Metra devices. Metra developed several installation devices to make network installation
on the field easy and reliable. Network Repeaters ensure longer maximum cable length and almost
any desirable network topology. Network Splitter supports standard UTP cabling widely used in
computer installations.

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Metra NET Network - Installation Manual
Terminology
CAN
Controller Area Network. Industry standard field bus networking system.
Metra NET Network
Industry standard CAN network that is used for interconnection of Metra
devices.
Network device
(Metra NET Device)
Device connected to Metra NET Network (for example: Door Access
Terminal, Reader Terminal, Tripod Turnstile, Locker Controller….).
Network Controller
Special purpose Metra device that converts signals and communication
protocol between Metra NET (CAN) and computer’s LAN network (TCP/IP).
Network Repeater
Device that amplifies CAN physical signals to achieve complex networking
topologies or longer networking cable lengths.
Network Splitter
Device that splits Metra NET Network cable to connect Metra device.
Network Terminator
Each cable segment of the Metra NET network must be terminated on far
end with the Network Terminator (resistor).
RJ-45 connector
Standard UTP cable connector.
UTP Cable
Cable widely used in computer networks. Suitable also for Metra NET
Network. Cable wires are defined differently for Metra NET network. Never
mix Metra NET Network with other computer Networks. They are not
compatible!
Trunk Line
Main Metra NET Network (CAN) cable line which can be totally up to 1km
long and terminated with Network Terminator at the end. Network devices
are attached to the Trunk line via Network Splitters and should not be
located more than 10 meters away from trunk line.

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Metra NET Network - Installation Manual
Network installation products
Network Splitter
Used as interconnecting device for “Metra NET Network” by using
standard UTP cable. It is also used to connect Metra device to the
“Metra NET Network”.
It is passive device that do not need power for operation.
NOTE 
Network Splitter does not need power supply for its operation! It
only connects device’s power lines to power supply’s power lines for
easier installation procedure!
NOTE 
Connect only 12VDC power to the Network Splitter.
CAUTION 
Do not connect 24VDC power to the Network Splitter!
CAUTION 
Do not connect 230 VAC Mains power to the Network Splitter!
Network Repeater 2
Used to join two cable segments of the “Metra NET Network”. It has
two external RJ-45 connectors: IN line is connected to Network
Controller side. OUT line is Trunk line for connecting Metra Devices
and can be up to 1000 meters long terminated at far end with
Network Terminator (the other side is terminated inside Network
Repeater on OUT line).
“Network Repeater 2” is also used in series topology when total
length of cable is longer than 1000m. “Network Repeater 2 needs
Power Supply 12VDC to operate properly which is included in the
product package.
NOTE 
Power supply for the Network Repeater 2 should be connected
through the UPS power supply unit.
Network Repeater 8
Used to join 8 cable segments of the “Metra NET Network”. It has 8
external RJ-45 connectors: IN line is connected to Network
Controller side, seven OUT lines are each Trunk line for connecting
Metra Devices and can be each up to 1000 meters long terminated
at far end with Network Terminator (the other side is terminated
inside Network Repeater on each OUT line). It is useful for complex

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Metra NET Network - Installation Manual
network topologies (star topologies) where several cables joins at
the single point.
“Network Repeater 8 needs Power Supply 12VDC to operate
properly which is included in the product package.
NOTE 
Power supply for the Network Repeater 8 should be connected
through the UPS power supply unit.
Network Controller / Repeater Mounting Plate for 19’’ rack
Mounting plate for 19’’ computer rack
for 2x “Network Repeater 2”, 1x
“Network Repeater 8” and 1x Network
Controller NET or Network Controller
TCP/IP. With nine additional RJ-45 Metra
NET Network connectors.
Network Terminator 120
Coloured Black. Used to terminate Trunk line. Single segment can be
up to 1000 meters long and connected to Network Controller or
Network Repeater.
Nominal impedance 120 Ohm.
Network Terminator 240
Coloured Blue. Used to terminate dual cable each segment
separately. Dual cable can be each segment up to 400 meters long.
Both cable segments join at the Network Controller or Network
Repeater.
Nominal impedance 240 Ohm
Emergency Open Push-Button
Key protected Emergency Open Push-button is used to initiate
Emergency Open procedure for all Electronic Locks connected to
Metra NET network.
Connects to Network Controller and Network Controller TCP/IP.

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Metra NET Network - Installation Manual
Connecting cable for Metra Devices
Cable to connect Metra device to Network Splitter if longer cable
needed.
Each device comes with own cable from 1 to 1.5 metres long.
Available lengths: 3m, 5m and 10m.
Mounting Network installation products
Mounting Network Splitter
Network Splitter can be mounted to a flat surface by a
screw through the hole in the middle.
The other possibility is to mount it on a flat surface by
adhesive label on the bottom of Network Splitter.
Mounting Network Repeater 2 to the Network Controller / Repeater
Mounting Plate for 19’’ rack
NOTE 
Up to four “Network Repeaters 2” and one “Network Repeater 8” can be mounted to the “Network
Repeater Mounting Plate for 19” rack simultaneously.

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Metra NET Network - Installation Manual
Mounting Network Repeater 8 to the Network Controller / Repeater
Mounting Plate for 19’’ rack
NOTE 
Up to four “Network Repeaters 2” and one “Network Repeater 8” can be mounted to the “Network
Repeater Mounting Plate for 19” rack simultaneously.
Mounting Network Controller TCP/IP to the Network Controller / Repeater
Mounting Plate for 19’’ rack
NOTE 
Up to four “Network Repeaters 2” and one “Network Repeater 8” can be mounted to the “Network
Repeater Mounting Plate for 19” rack simultaneously.

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Metra NET Network - Installation Manual
Mounting Network Controller NET to the Network Controller / Repeater
Mounting Plate for 19’’ rack
NOTE 
Up to four “Network Repeaters 2” and one “Network Repeater 8” can be mounted to the “Network
Repeater Mounting Plate for 19” rack simultaneously.
Metra NET Network
“Metra NET Network” uses industry standard CAN network.
It is two wire bus topology which means parallel connection to each device. Wires are labelled CANH
and CANL on each Metra device.
NOTE 
It is important not to mix connection wires for CANH and CANL!

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Metra NET Network - Installation Manual
Network Controller (NTC in this document) is used to translate signals between computer LAN
network and Metra NET Network.
Maximum length and maximum number of devices are limited on Metra NET Network. See different
topologies for exact information.
Metra NET Network termination
In CAN theory each end of a main cable (trunk line) must be terminated by its characteristic
impedance (120 ohm for Metra NET Network). All devices must be connected to main cable (trunk
line) with very short cable segments comparing to maximum main cable length (maximum 10 meters
for Metra NET Network).
For “Metra NET Network” to function properly both ends of the cable must be terminated by
“Network Terminator 120”. Network Controller and Network Repeater’s OUT line already include
“Network Terminator 120” internally. Therefore only the far end of the Metra NET Network must be
terminated by the “Network Terminator 120”. Maximum length for Metra NET trunk line cable is
1000 meters (connected via Network Splitters to attach to Metra devices). Metra devices connected
via Network Splitter must not be terminated and their connecting cable should not exceed 10
meters.
Special case is when two cable segments are used instead of one and each cable is not longer than
400 meters. In that case Network Terminator 240 is connected on far end of each cable. Both cables
join on the other side at Network Controller or Network Repeater.
NOTE 
If Metra NET Network is not terminated as described in this document Master keys may not function
and Metra devices may not have full functionality!
NOTE 
If Metra NET Network is over terminated by using more than one Network Terminator on each line
Metra NET Network may not function properly!
Network Repeater and Network Controller internal line termination
“Network Controller NET” is internally terminated by the “Network Terminator 120”.
“Network Controller TCP/IP” is internally terminated by the “Network Terminator 120”.
“Network Repeater 2” has OUT line internally terminated by the “Network Terminator 120”.
“Network Repeater 8” has each OUT line internally terminated by the “Network Terminator
120”.
Network Repeater’s IN line is not terminated internally since many input lines can be joined
together through the Network Splitter.

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Metra NET Network - Installation Manual
Maximum number of devices on “Metra NET Network”
Maximum number of Metra devices connected to Metra NET Network depends on type of Network
Controller (NTC) used. Limiting factor is Network Controller’s capability to handle several devices not
the physical properties of network.
type of NTC
order code
maximum number of Metra devices
Network Controller NET
NCNET
100
Network Controller TCP/IP
NCTCP
100
NOTE 
To extend number of devices on the installation use several Network Controllers!
Line topology
This is basic topology that must be followed at each Trunk line. Simplest form is direct connection to
Network Controller without any Network Repeater as shown below:
Simple ”V” topology
Used for installations where two Trunk lines (Metra NET cables) are joined at Network Controller
without Network Repeaters. In this case each Trunk line should not exceed 400m in length and must
be terminated with Network Terminator 240. This topology can be also implemented on each OUT
line of the Network Repeater.

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Metra NET Network - Installation Manual
Star topology –Using Network Repeater 2
Star Topology - Two Network Repeaters 2
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.

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Metra NET Network - Installation Manual
NOTE 
Power supplies for the Network Repeaters 2 should be connected through the UPS power supply
unit.
See “Appendix 3: Two Network Repeaters 2 and Network Controller TCP/IP” for rack mounting plate
connection schematic.
Star Topology - Three Network Repeaters 2
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.
NOTE 
Power supplies for the Network Repeaters 2 should be connected through the UPS power supply
unit.

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Metra NET Network - Installation Manual
Star Topology - Four Network Repeaters 2
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.
NOTE 
Power supplies for the Network Repeaters 2 should be connected through the UPS power supply
unit.

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Metra NET Network - Installation Manual
Star topology –Using Network Repeater 8
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.
NOTE 
Power supply for the Network Repeater 8 should be connected through the UPS power supply unit.
See “Appendix 3: Star Topology - Network Repeater 8 and Network Controller TCP/IP” for rack
mounting plate connection schematic.

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Metra NET Network - Installation Manual
Line topology –Using Master and Slave Network Controllers TCP/IP
In dual (master/slave) mode two Network Controllers TCP/IP control one Metra NET network. One
Network Controller TCP/IP acts as master and the other is redundant slave that takes over the
control of Metra NET network in case of master malfunction, etc. Master device is connected to one
end of Metra Net Network and slave device to the other. In normal operation only master device
controls all devices on the Metra NET Network and slave serves as hot spare and is activated in case
of LAN, Metra NET or master device failure and upon failure activation alarm notification is send by
Metra PC SW over LAN/WAN network. If Metra NET Network gets interrupted both devices become
master and take control of devices connected to their segment of Metra NET Network. See also
“Network Controller TCP/IP - Technical Manual” for more information.
NOTE 
Trunk line is terminated internally with Network Terminators 120 build-in the Network Controllers
TCP/IP.
Network Lines longer than 1 km
When Network line is longer than 1 km Network Repeater must be used. See examples for 2 and 4
km Network.
For connecting via optical lines, contact Metra Inženiring.
2km Network

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Metra NET Network - Installation Manual
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.
NOTE 
Power supply for the Network Repeater 2 should be connected through the UPS power supply unit.
4km Network
NOTE 
OUT line Network Repeater is terminated internally with Network Terminator 120. IN line of the
Network Repeater is not terminated internally.
NOTE 
Power supplies for the Network Repeaters 2 should be connected through the UPS power supply
unit.
Connecting Metra devices to “Metra NET Network”
NOTE 
Always consult Metra device’s Technical Manual for exact information how to connect it to the
Metra NET Network!
Trunk line and its termination
Metra NET Network trunk (main) line is segmented using Network Splitters where the Metra device
is connected to it. Network Splitters are interconnected by standard UTP (Cat. 5) cables forming the
Trunk line (main network line). The last Network Splitter is terminated by the Network Terminator.

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Metra NET Network - Installation Manual
Metra device connection via additional Network Splitter
Metra devices come with Network cable which is usually 1 meter long and intended to connect
device to Network Splitter. If Network Splitter (network installation) is far from the device (not more
than 10 meters) additional Network Splitter is needed close to the device to use original connecting
cable.
Metra device is also powered via Network Splitter as illustrated bellow.

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Metra NET Network - Installation Manual
NOTE 
Power supply is Metra Device’s Power Supply and is not needed for Network Splitter operation.
Network Splitter only connects device’s power lines to power supply’s power lines for easier
installation procedure!
Metra device direct connection
NOTE 
Extra connecting cable for Metra device is needed (3m, 5m or 10m) in case when Network Splitter is
installed more than 1 meter from Metra device (not more that 10 meters)!