Vingtor Stentofon FCDC1 Instruction sheet

Configuration Manual
Flowire Converter
FCDC1 / FCDC2
A100K11422
TECHNICAL MANUAL

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Flowire Converter Conguration Manual
About this Document
Document Scope
This document provides a detailed guide to the system setup and conguration of the FCDC1
and FCDC2 Flowire Converter in creating IP networks using conventional telecom star-wired
infrastructure (2-wire).
Relevant Products
Product Description Item Name Item No.
Flowire Converter, 24-48V DC FCDC1 1008080110
Flowire Converter for Ex, 24-48V DC FCDC2 1008080210
XP PSU, 48V DC, 120W Flowire XP 120 2990101120
XP PSU, 48V DC, 240W Flowire XP 240 2990101240
Powerbox PSU, 24V DC, 120W Flowire EX 120 2990102120
Powerbox PSU, 24V DC, 250W Flowire EX 250 2990102240
Turbine Extended Ex IP Intercom TFIX-1 1008123010
Turbine Extended Ex IP Intercom TFIX-2 1008123020
Turbine Extended Ex IP Intercom TFIX-3 1008123030
Turbine Extended Ex IP Intercom TFIX-4 1008123040
Exigo Access Panel Ex EAPFX-1 1023221511
Exigo Access Panel Ex EAPFX-6 1023221516
Publication Log
Ver. Date Author Status Comments
1 5.7.2013 HL/HKL Published
2 10.11.2015 HKL Published
2.1 13.4.2016 HKL Published FCDC1 restrictions
3 2.5.2017 HKL Published New GUI, IGMP, CCo
Related Documentation
For further information, refer to the following documentation:
Doc. number Documentation
A100K11706 Flowire Guidelines for Exigo
A100K11285 Flowire Getting Started
A100K11611 Replacing Flowire Converter
A100K11379 Autocad Dimension Drawing
A100K11499 Exigo & Turbine Ex Installation & Maintenance
Acronyms
Acronym Meaning
FCDC Flowire Converter Direct Current
Flowire Star
Conguration
A star conguration consisting of two or more Flowire devices, with a link to each other,
and one PSU.
NMK Network Management Key
PLC Power Line Communication. This is the basis of the Flowire technology for transporting
both power and signal on power cables or any other cable with at least two conductors.
PSU Power Supply Unit

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Contents
1 Product Description ............................................................................................................4
1.1 General Description .......................................................................................................4
1.2 Areas of Application .......................................................................................................5
1.2.1 Retrotting Older Intercom & Telephone Systems ......................................................5
1.2.2 Remote IP Intercom Locations In New Buildings ........................................................5
2 Upgrading Conventional Star-Wired Infrastructure .........................................................6
2.1 The Conventional System .............................................................................................6
2.2 Power on Conventional Infrastructure ...........................................................................7
2.3 Precaution & Limitations ................................................................................................7
2.4 Recommendations .........................................................................................................7
2.5 System Conguration with Central Powering of Remote Intercoms ..............................8
2.6 System Conguration with Local Powering of Remote Intercoms .................................9
2.7 System Conguration with Ex Equipment ...................................................................10
3 Connections & Indications ............................................................................................... 11
3.1 Flowire Connection ...................................................................................................... 11
3.2 Ethernet Connection .................................................................................................... 11
3.3 Indicator LEDs ............................................................................................................. 11
3.4 Password Reset Button ............................................................................................... 11
4 Mounting & Recommendations........................................................................................12
4.1 Mounting the Flowire Converter ..................................................................................12
4.2 Power Requirements ...................................................................................................12
5 Troubleshooting ................................................................................................................13
5.1 Power for Stable Connection at Remote Site ..............................................................13
5.2 Cables & Bandwidth ....................................................................................................13
5.3 Collecting Trace Logs ..................................................................................................13
A: Power Consumption & Distances for Typical Cables ....................................................15
B: AdvancedConguration...................................................................................................16
B.1 Setting a Static IP Address ..........................................................................................16
B.2 Disabling DHCP ..........................................................................................................17
B.3 Network Management Key (NMK) Conguration ........................................................18
2.1 IGMP Settings..............................................................................................................19
2.1.1 IGMP Querier ............................................................................................................19
2.1.2 IGMPv2 Compatability ..............................................................................................19
2.2 CCo Settings ...............................................................................................................20
C: Software Upgrade..............................................................................................................21
C.1 Upgrading via VS-IMT on PC ......................................................................................21
C.2 Upgrade via Web Interface on Flowire Device ............................................................24
C.2.1 TFTP Server Setup ...................................................................................................24
C.2.2 Flowire Device Web Interface ...................................................................................24
Figures
Figure 1 FCDC1 Flowire Converter .......................................................................................................................... 4
Figure 2 FCDC1 and FCDC2 .................................................................................................................................... 4
Figure 3 Conventional star-wired infrastructure ........................................................................................................ 6
Figure 4 Conventional star infrastructure with multi-pair cables and junction boxes ................................................ 6
Figure 5 Flowire Upgraded conguration with central power distribution. ............................................................... 8
Figure 6 Conventional analog/digital system conguration....................................................................................... 9
Figure 7 Flowire Upgraded conguration with local power at remote locations. ...................................................... 9
Figure 8 Cabling in Ex Zone using FCDC2 ............................................................................................................. 10
Figure 9 Flowire Converter Dimensions.................................................................................................................. 12
Figure 10 IGMP Settings ........................................................................................................................................... 19
Figure 11 Congured PLC Role - CCo, Not CCo, Auto ............................................................................................ 20

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1 Product Description
1.1 General Description
The Flowire Converter enables Ethernet to run on the same two wires as power, providing simpler
cabling and opening up for longer cable hauls. The Flowire converter is also capable of powering the
Ethernet devices (Vingtor-Stentofon IP intercom stations) attached to it via spare pairs.
Figure 1 FCDC1 Flowire Converter
There are two models of the Flowire Converter:
Model Description
FCDC1 24-48 VDC Flowire Converter with power-forwarding (PoE, type
2). Forwards 48V from the power supply to the spare pairs of the
Ethernet port (not true PoE).
FCDC2 Non-PoE 24-48 VDC Flowire Converter for use with central equipment
rack and Ex devices. Does not forward 48V to the spare pairs of the
Ethernet port.
Figure 2 FCDC1 and FCDC2
LIt is recommended to use FCDC1 only when you need to power the connected device
via the spare pairs of the Ethernet port. In all other situations, use the FCDC2.
Flowire/
Power
Connection
Indicators
Ethernet
RJ45 Port
Password
Reset
Button

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1.2 Areas of Application
The main areas of application for the Flowire Converter are:
● Retrotting older communication systems
● Providing Ethernet connectivity to remote locations in buildings
1.2.1 RetrottingOlderIntercom&TelephoneSystems
● Analog and digital intercom systems
● Analog and digital telephone systems
The above solutions typically use a conventional star-wired telecom infrastructure with 0.5 mm2 (20
AWG) single-pair twisted cables.
1.2.2 Remote IP Intercom Locations In New Buildings
In some new building projects, it is a challenge to provide Ethernet connectivity to remote locations
(beyond 100 meters from the main equipment room) for critical communication.
By implementing Flowire Converters, it is possible to upgrade these systems with IP products without
costly and time consuming re-cabling of CAT or ber cables.

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2 Upgrading Conventional Star-Wired Infrastructure
2.1 The Conventional System
A conventional star-wired infrastructure supports analog and digital intercom and telephone systems.
These star-wired telecom infrastructures are typically used in both marine and onshore intercom
applications.
Figure 3 Conventional star-wired infrastructure
In this solution, you will have a centralized equipment rack with the following equipment:
● Telecom / Intercom Exchange
● Power Supply Unit
● Main Distribution Frame
The Main Distribution Frame connects the exchange to subscriber lines connected in a star structure.
Figure 4 Conventional star infrastructure with multi-pair cables and junction boxes
In order to simplify maintenance and reduce cabling costs, it is common to use multi-pair cables and
junction boxes in order to branch out to di󰀨erent locations.

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Conventional star-wired telecom infrastructures commonly use one twisted wire pair to each telecom
device. However, many systems, like AlphaCom, use two twisted pairs for each telecom device
2.2 Power on Conventional Infrastructure
In an analog and digital telecom/intercom system, it is usually a requirement to power the telephones/
intercoms from the central equipment rack, thus supplying the power over the subscriber line.
Typical maximum subscriber line distances for intercom systems are:
Wire cross section Distance
0.6 mm2 (19 AWG) 2.0 km
0.5 mm2 (20 AWG) 1.4 km
Table 1 AlphaCom Subscriber Line Distance
Wire cross section Distance
0.5 mm2(20 AWG) 0.8 km
Table 2 AsaCom Subscriber Line Distance
2.3 Precaution & Limitations
● The cable shields must be interconnected in junction boxes and grounded in the central device
only.
● Never use a cable run where the voltage drops below half of the PSU voltage.
● Do not connect more than 10 Flowire Converters on one Flowire star conguration.
● Powering of remote IP intercom stations through their Ethernet ports requires at least 40 VDC
at the remote site.
2.4 Recommendations
● Use twisted-pair shielded cables
● The cable between the PSU and the Flowire Converter should not be shorter than 50 cm.
● Unless the cables are shielded, you should avoid running wires from di󰀨erent Flowire star
congurations in the same cable ducts.
● Avoid multi-pair cables with connections to other systems.
● If you are using a multi-pair cable, but not all its pairs, connect more pairs between two Flowire
Converters to reduce voltage drop and increase bandwidth.
● In a central rack with two or more Flowire Converters in close proximity, use heat shrink with
grounding on unshielded areas of the cable to isolate the di󰀨erent Flowire star congurations
and avoid cross-talk.

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2.5 SystemCongurationwithCentralPoweringofRemoteIntercoms
Figure 5 Flowire Upgraded conguration with central power distribution.
In the gure above, there are two Flowire star congurations, each with one central FCDC2 Flowire
Converter and one central PSU (Power Supply Unit). FCDC1 is used to power the connected
device via the spare pairs of its Ethernet port There can be no cross connection between these star
congurations inside the main distribution frame.
The gure above shows how the Flowire upgraded system conguration will look when all remote IP
products are powered by centrally located PSUs.
LOnly use FCDC2 together with the central PSU in the main distribution frame.
LAll multi-pair cables for one Flowire star conguration has to be gathered in the central
FCDC2. This can be done directly in the FCDC2 if the plug has room for it, on connector rails
or by some other means.
LYou must never cross connect two Flowire star congurations.
LYou must never have wires from dierent Flowire star congurations share the same multi-
pair cable as this will lead to a very detrimental form of crosstalk.
LYou must never ground any of the devices at the remote sites as this may draw additional
current from the central PSU to the remote sites, thus reducing the power distribution
performance.
Junction
box
Junction
box
FCDC1
FCDC1
FCDC1
FCDC1
2-wire
2-wire
2-wire
2-wire
2-wire
2-wire
CAT
CAT
CAT
CAT
Gather multipairs when
connecting to Flowire
FCDC2
FCDC2
Main distribution frame
2-wire/multipair cable
2-wire/multipair cable
CAT
CAT
PSU
PSU
CAT FCDC1
FCDC1
FCDC1
FCDC1
CAT
CAT
CAT
CAT
FCDC1 CAT
2-wire
2-wire
2-wire
> 0 5 m
> 0 5 m
.
.

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2.6 SystemCongurationwithLocalPoweringofRemoteIntercoms
Figure 6 Conventional analog/digital system conguration
Figure 7 Flowire Upgraded conguration with local power at remote locations.
Red cables indicate long hauls where local power will be necessary to maintain a stable connection
to the intercoms. FCDC2 is used to connect to local power for intercoms at remote locations. For
single stations a PoE injector will be ideal. For groups of intercom stations, it may be better to use a
PoE switch.
LDO NOT use FCDC1 to connect to local power for intercoms at remote locations.
LMaximum number of Flowire devices per star conguration = 10
LDO NOT use Gigabit switch with FCDC1 as this will damage the switch.
LONLY use twisted-pair cables.
Junction
box
Junction
box
FCDC1
FCDC2
FCDC2
FCDC1
FCDC1
FCDC1
2-wire
2-wire
2-wire
2-wire
2-wire long haul
2-wire long haul
CAT
CAT
CAT
CAT
CAT
CAT
PoE injector CAT
PoE
Switch
Gather multipairs when
connecting to Flowire
FCDC2
FCDC2
Main distribution frame
2-wire/multipair cable
2-wire/multipair cable
CAT
CAT
PSU
PSU
CAT
> 0 5 m
> 0 5 m
.
.
Cross connect
Flat cable
Flat cable
Multipair cable
2wire
2wire
2wire
2wire
2wire
Junction
box
Junction
box
Multipair cable
2wire
2wire
2wire
2wire
Main distribution frame

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2.7 SystemCongurationwithExEquipment
In this example the Ex access panel in a PA system is connected to the central equipment rack using
Ex certied 2-wire shielded cable. FCDC2 is used to extend the Ethernet connection and support
power distribution on the 2-wire cabling infrastructure.
Figure 8 Cabling in Ex Zone using FCDC2
LFor power, a 24 VDC Power Supply Unit MUST be used.
LThe FCDC2 MUST NOT be connected to a PoE injector as this will damage the Ex equipment.

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3 Connections & Indications
3.1 Flowire Connection
The Flowire Converter must be connected to the Flowire star conguration
using twisted cabling as shown. The red wire is the positive supply voltage
while the black wire is the negative supply voltage. The power supply
voltage used depends on the type of devices in the star conguration.
●48 VDC PSU : When using Flowire with Vingtor-Stentofon IP intercoms
and access panels.
●24 VDC PSU : When using Flowire with Vingtor-Stentofon Ex intercoms
and access panels. (FCDC2 is particularly suited to this.)
For the sake of convenience, the Flowire Converter is equipped with two
connections to the star conguration.
LPlease note that these two connections are equivalent.
3.2 Ethernet Connection
Ethernet is connected via the RJ45 port. This supplies 10/100 Mbps
Ethernet (in and out) and power out over spare pairs (FCDC1 only). The
power on the spare pairs is the same voltage as the one supplied to the
converter. Hence, at least 40 volts must be applied to the converter in order
to ensure stable operation when powering IP intercom stations directly
through their Ethernet ports. If the station has a 24V input, the current can
be reduced to 24 volts by separating the spare pairs from the CAT cable
and connecting it to this input.
LDO NOT power the Flowire Converter through the RJ45 port. Trying
to do so with a PoE injector will damage the converter.
LDO NOT use Gigabit switch with FCDC1 as this will damage the
switch
LThe RJ45 port on FCDC1 is NOT a PoE-compatible output but
DC voltage on spare pairs which is present at all times. It MUST
NOT be connected to any equipment that can be damaged by this
voltage.
3.3 Indicator LEDs
The Flowire Converter is equipped with three green LEDs. These indicate
the status of the power, the connection/link to Flowire, and whether data is
transmitted on Flowire or not.
LED1 - Power:This LED is lit when the converter is receiving enough
power for powering up.
LED2 - Link: This LED is lit when the converter recognizes one or more
converters on the Flowire star conguration.
LED3 - Activity: This LED is lit when data is transmitted to or from the
converter.
3.4 Password Reset Button
Pressing and holding this button for more than 15 seconds will reset the
NMK password to the default: HomePlugAV0123
In addition to reseting the NMK password to its default, the procedure will
also set the following factory defaults:
● DHCP will be turned on
● IGMP snooping querier will be turned on

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4 Mounting & Recommendations
4.1 Mounting the Flowire Converter
The Flowire Converter should be mounted on-wall by using 2 x 4 mm screws or on NS35 DIN rail by
using the mounting clips provided in a normal and ventilated indoor environment with a temperature
of maximum 55ºC. Make sure that there is su󰀩cient space for cables and maintenance. When using
more than one Flowire Converter, try to mount them as far apart as possible.
Figure 9 Flowire Converter Dimensions
4.2 PowerRequirements
A Flowire Converter needs at least 18V to operate, nominal voltage is 24V to 48V, and maximum
voltage is 56V. The voltage at the remote Flowire Converter should never drop below half of the
PSU’s output voltage.
To power a Vingtor-Stentofon IP Intercom Station through its Ethernet port, we recommend at least
40V at the remote site.
For land-based installations, use XP power PSU for FCDC1:
- Flowire XP 120 XP Power Supply Unit, 48V DC, 120W
Item no. 2990101120
- Flowire XP 240 XP Power Supply Unit, 48V DC, 240W
Item no. 2990101240
For installations with Ex equipment, use Powerbox PSU for FCDC2:
- Flowire EX 120 Powerbox PSU, 24V DC, 120W
Item no. 2990102120
- Flowire EX 250 Powerbox PSU, 24V DC, 250W
Item no. 2990102240
24VDC
1008080210
non-PoE
.
FCDC2

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5 Troubleshooting
5.1 Power for Stable Connection at Remote Site
The minimum voltage at the remote end for PoE is 40VDC. The minimum voltage for the TFIX Ex
intercoms and EAPFX Ex access panels is 18VDC.
If you are not getting su󰀩cient voltage for a stable connection at the remote site, you can:
● Adjust the output voltage on the PSU
● Use local power supply for the connected equipment
● Route the spare pairs in the Ethernet cable to the intercom station’s 24V input (available on
most Vingtor-Stentofon IP intercom stations and kits except for Desktop Master Stations)
5.2 Cables & Bandwidth
● To get the best bandwidth you should use twisted-pair shielded cables.
● When using multi-pair cables, there should ideally not be any tra󰀩c on the pairs not being
used for the Flowire Converter. A point-to-point connection between two Flowire Converters,
however, will get better bandwidth when more wires are connected between them.
● Avoid unnecessary splicing. A continuous cable will carry the signal further.
● Regarding EMI, twisted/shielded cabling is highly recommended. When using unshielded
parallel cables, try to avoid running them close to devices emitting strong elds in the 2 to 28
MHz bandwidth.
● Regarding cross-talk, there will always be some cross-talk when running unshielded
cables close to each other or when using several pairs in a multi-pair cable for di󰀨erent
devices. However, the most detrimental cross-talk can occur between di󰀨erent Flowire star
congurations.
5.3 Collecting Trace Logs
This feature is supported in Flowire software versions 4.1.3.3 and later.
In case of issues with the Flowire device, the Trace Log Folder will be populated.
This will be reected on the Flowire device information page.
● The contents of the folder can be downloaded by clicking the the Download logs button on
the information page.
● The logs can be deleted by clicking the Clear trace folder button on the information page.

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A: Power Consumption & Distances for Typical Cables
The table below shows theoretical point-to-point distances for di󰀨erent cable types at di󰀨erent levels
of power consumption at the remote location. All distances are calculated for 48V output from the
PSU.
Cable Type Resistance Intercom Intercom Power
Consumption
40V
0.5 mm (24 AWG) 87.5 Ohm/km Turbine Compact Normal 10W 180m
0.5 mm (24 AWG) 87.5 Ohm/km Turbine Compact Max power consumption 18W 100m
0.5 mm (24 AWG) 87.5 Ohm/km INCA Normal 8W 220m
0.5 mm (24 AWG) 87.5 Ohm/km INCA Max power consumption 14W 130m
0.6 mm (22 AWG) 60.7 Ohm/km Turbine Compact Normal 10W 260m
0.6 mm ( 22 AWG) 60.7 Ohm/km Turbine Compact Max power consumption 18W 140m
0.6 mm (22 AWG) 60.7 Ohm/km INCA Normal 8W 320m
0.6 mm (22 AWG) 60.7 Ohm/km INCA Max power consumption 14W 180m
0.9 mm (19 AWG) 26.9 Ohm/km Turbine Compact Normal 10W 590m
0.9 mm (19 AWG) 26.9 Ohm/km Turbine Compact Max power consumption 18W 330m
0.9 mm (19 AWG) 26.9 Ohm/km INCA Normal 8W 740m
0.9 mm (19 AWG) 26.9 Ohm/km INCA Max power consumption 14W 420m
Table 3 Theoretical point-to-point distances when using a centrally located PSU to power intercom stations. Wire/
conductor thickness described as diameter and AWG.
Cable Type Resistance Intercom Intercom Power
Consumption
40V
0.5 mm2 (20 AWG) 37.8 Ohm/km Turbine Compact Normal 10W 420m
0.5 mm2 (20 AWG) 37.8 Ohm/km Turbine Compact Max power consumption 18W 230m
0.5 mm2 (20 AWG) 37.8 Ohm/km INCA Normal 8W 520m
0.5 mm2(20 AWG) 37.8 Ohm/km INCA Max power consumption 14W 300m
0.75 mm2(18 AWG) 25.3 Ohm/km Turbine Compact Normal 10W 630m
0.75 mm2(18 AWG) 25.3 Ohm/km Turbine Compact Max power consumption 18W 350m
0.75 mm2(18 AWG) 25.3 Ohm/km INCA Normal 8W 790m
0.75 mm2(18 AWG) 25.3 Ohm/km INCA Max power consumption 14W 450m
1.0 mm2(17 AWG) 18.9 Ohm/km Turbine Compact Normal 10W 840m
1.0 mm2(17 AWG) 18.9 Ohm/km Turbine Compact Max power consumption 18W 470m
1.0 mm2(17 AWG) 18.9 Ohm/km INCA Normal 8W 1000m
1.0 mm2(17 AWG) 18.9 Ohm/km INCA Max power consumption 14W 420m
1.5 mm2(15 AWG) 12.6 Ohm/km Turbine Compact Normal 10W 1200m
1.5 mm2(15 AWG) 12.6 Ohm/km Turbine Compact Max power consumption 18W 700m
1.5 mm2(15 AWG) 12.6 Ohm/km INCA Normal 8W 1500m
1.5 mm2(15 AWG) 12.6 Ohm/km INCA Max power consumption 14W 900m
Table 4 Theoretical point-to-point distances when using a centrally located PSU to power intercom stations. Wire/
conductor thickness described as cross section and AWG
LNote that being able to power a remote station does not guarantee sucient bandwidth. For
more about bandwidth see section “5.2 Cables & Bandwidth”.

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B: AdvancedConguration
IP addresses on a Flowire device can be set either by setting a static IP address or having one
assigned from a temporary DHCP server. The Flowire device has, by default, DHCP enabled on one
of their networking interfaces. The DHCP can be disabled as described in section “B.2 Disabling
DHCP”.
B.1 Setting a Static IP Address
By default, all Flowire devices have 169.254.1.10 as a static IP address.
In order to set a new static IP address:
1. Isolate the Flowire device by disconnecting the line to other devices.
2. Access the web interface of the Flowire device via the default address 169.254.1.10.
3. Enter the new IP address in CIDR notation, e.g. 10.5.202.80/24 in the Flowire static IP eld
4. Click Set static IP
The device will now reboot with the new static IP address.

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B.2 Disabling DHCP
This feature is supported in Flowire software versions 4.1.3.3 and later.
In case there is an explicit need to turn o󰀨 the DHCP client on the device, this can be done via the
device web interface.
To disable DHCP:
● Click Toggle DHCP
DHCP will be disabled or enabled, depending on the previous state. The DHCP enabled eld
displaying true or false on the information page will reect the change.
When the DHCP client is disabled, IP Address will display 0.0.0.0 indicating that DHCP is not
congured.

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B.3 NetworkManagementKey(NMK)Conguration
To set a new NMK password:
1. Log into the Flowire device by entering its IP address (e.g. 10.5.202.80) in a web browser.
2. Click the Upgrade form button
3. Enter a new password in the Flowire NMK eld
4. Click Change NMK
The NMK Password must be between 8 and 64 characters long, and is case sensitive.

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It is good practice to label the Flowire device with the new NMK.
Default NMK: HomePlugAV0123
2.1 IGMP Settings
It is possible to congure IGMP settings in the Flowire web interface.
Figure 10 IGMP Settings
2.1.1 IGMP Querier
In order to secure the reliability of multicast handling, the network should have an active IGMP
querier.
If the core network is an unmanaged switch with no IGMP querier, it is possible to enable an IGMP
querier in Flowire. The setting is in the Flowire web interface, and activates an IGMPv3 querier. It is
recommended to enableIGMPquerier on the Flowire unit closest to the switch.
If the core network has an IGMP querier, do not enable IGMPquerier in any of the Flowire units.
2.1.2 IGMPv2 Compatability
Current versions of Cisco industrial switches only handle IGMPv2. Therefore, the Cisco switch should
be the IGMP querier, forcing the system to do IGMPv2 reporting.
In systems where the network has an IGMPv2 querier, and there are several devices in a star
conguration, IGMPv2 compatibility must be enabled in the device-side/endpoint Flowire units. This
setting is available in Flowire SW version 4.1.3.10 and later.
●IGMPv2 compatibility must never be enabled on the Flowire unit closest to the switch.
● For star conguration (one-to-many), IGMPv2 compatibility must be enabled on the device-
side/endpoint Flowire units.
● For one-to-one connections, this setting is irrelevant for the device side Flowire unit, and can
be left as Disabled.
For more information, go to our wiki page on this subject.

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2.2 CCo Settings
Figure 11 Congured PLC Role - CCo, Not CCo, Auto
In the Flowire web interface, each Flowire unit has a setting for CCo (Central Coordinator). In every
Flowire network, there is always one CCo, but this is, by default, automatically selected. If the
CCo should fail, another Flowire unit on the network is automatically selected to be CCo. In a star
conguration, in order to optimize availability, it is recommended to always congure the FCDC2 in
the rack to be CCo. Due to its location, it is least likely to su󰀨er damage. If this Flowire unit fails, the
star conguration will not function in any case, whether or not it is the CCo, as all other Flowire units
are routed through it. In order for the FCDC2 in the rack to be congured as a CCo, it is necessary to
congure the device-side Flowire units to not CCo.
● For one-to-one connections, this setting can be left as Auto.
LNote: After changing CCo settings, the Flowire unit needs to be rebooted.
For more information, go to our wiki page on this subject.