Johnson Controls Metasys NCE25 series Installation Instructions Manual

NCE25 Installation Instructions

Application

The Metasys® Network Control Engine (NCE) 25 Series controllers combine the network supervisor
capabilities and Internet IP network connectivity of a Metasys Network Automation Engine (NAE)
with the I/O point connectivity and direct digital control capabilities of a Metasys Field Equipment
Controller (FEC). These network engines provide a cost-effective solution designed for central plant
applications and large built-up air handlers.

NCE25 Series controllers provide integration to the following network protocols: BACnet/IP, BACnet
MS/TP, and N2 Bus and integrations to other building management communication technologies,
including Modbus®, M-Bus, and KNX. The network engine at 9.0.7 is shipped with the licenses and
drivers for all three communication protocols: Modbus, M-Bus, and KNX.

Note: LonWorks® is no longer supported for an NCE at Release 9.0.7. All NCEs that feature the
LonWorks integration remain at Release 9.0 or earlier.

Figure 3 shows the physical features of an MS-NCE2567-0 model. See Table 18 for NCE25 Series
model information and features.

Important: For existing custom integrations, contact your local Systems Integration Services
(SIS) team before an upgrade. Updated drivers can be provided on request.

Installation

Follow these guidelines when installing an NCE:

• Transport the NCE in the original container to minimize vibration and shock damage to the
network .

• Verify that all the parts shipped with the NCE.

• Do not drop the NCE or subject it to physical shock.

Parts included

• One NCE with removable terminal plugs.

• One data protection battery installed and connected when the NCE is shipped.

• One installation instructions sheet.

Materials and special tools needed

• Three fasteners appropriate for the mounting surface (M4 screws [#8] screws).

• One 20 cm (8 in.) or longer piece of 35 mm DIN rail, and appropriate hardware for mounting the
DIN rail.

Mounting

Location considerations

Follow these guidelines when mounting a network engine:

• Ensure that the mounting surface can support the NCE and any user-supplied panel or enclosure.

Part No. 24-10143-63 Rev. S

2018-12-17

Release 9.0.7

*241014363S*

(barcode for factory use only)

• Mount the NCE in a horizontal, upright orientation.

• Mount the NCE on an even surface in wall mount applications whenever possible. If you must
mount the network engine on an uneven surface, be careful not to crack the mounting clips or
network engine housing when tightening the screws. Use shims or washers to mount the NCE
evenly on the mounting surface.

• Mount the NCE in areas free of corrosive vapors, and observe the environmental limitations
listed in the Technical specifications section.

• Allow sufficient space to accommodate cable and wire connections. See Figure 1.

• Do not mount the network engine where the ambient temperature may exceed 50°C (122°F).

• Do not mount the network engine on surfaces that are prone to vibration or in areas where
electromagnetic or radio frequency emissions can interfere with network engine communication.

• Do not obstruct the network engine housing ventilation holes.

• Do not mount a power transformer below the network engine.

On applications where the network engine is mounted inside a panel or enclosure, follow these
additional guidelines:

• Do not install the network engine in an airtight enclosure.

• Do not install heat-generating devices in the enclosure with the network engine that may cause
the ambient temperature to exceed 50°C (122°F).

Wall mount applications

Use the holes in the three mounting clips for wall mount applications.

To mount the network engine on a wall or other vertical surface, complete the following steps:

1. Ensure that all three mounting clips are inserted into the back of the network engine housing
and then pulled outward and snapped firmly into the extended position. See Figure 2.

2. Mark the location of the three wall mount holes using the dimensions in Figure 1, or hold the
network engine up to the wall as a template and mark the locations.

3. Drill holes in the wall at the locations marked in Step 2 and insert wall anchors, if necessary.

NCE25 Installation Instructions2

Figure 1: NCE mounting screw hole dimensions,

(mm/in.), and mounting area requirements

4. Position the network engine and insert the screws through the holes in the mounting clips, and
carefully tighten all the screws.

Important: Do not overtighten the mounting screws. Overtightening the screws may
damage the mounting clips or NCE housing.

DIN rail mount applications

To mount the network engine on a DIN rail:

1. Securely mount a 20 cm (8 in.) or longer section of DIN rail horizontally and centered in the
required space.

2. Pull out the two mounting clips and snap them firmly. See Figure 2.

3NCE25 Installation Instructions

Figure 2: DIN rail and mounting clip features on the back of an NCE

3. Hang the network engine by the DIN rail hooks on the top track of the DIN rail, and position
the network engine DIN rail channel snugly against the tracks of the DIN rail. See Figure 2.

4. Push the bottom mounting clips up to secure the network engine on the DIN rail tracks.

To remove the network engine from the DIN rail, snap the bottom DIN clips to the outward
extended position and carefully lift the network engine off the DIN rail.

Enclosure mount applications

Mount the enclosure in accordance with the manufacturer’s instructions, and then mount the
network engine in the enclosure following the guidelines in the Location considerations and

Mounting sections.

NCE25 Installation Instructions4

NCE25 physical features

Figure 3: Front of NCE2567-0 showing physical features (power

and I/O terminal blocks, and NCE mounting clips not shown)

Table 1: Callout table for NCE25 physical features

Callout Description

1 The LED status indicators vary depending on the NCE model. See LED status

indicators.

2 Binary output, configurable output, and analog output terminal blocks are located

on the top side of the NCE. See Input and output wiring guidelines.

3 6-Pin modular Bus ports.

• FC Bus port for MS/TP models only, connects to a Wireless Commissioning
Converter (MS-BTCVT-1).

• SA Bus port connects to a NS network sensor, a DIS1710- Local Controller Display,
or a Wireless Commissioning Converter (MS-BTCVT-1).

4 Data protection battery component.

5 NCE reset switch.

6 24 VAC Class 2 supply power terminal block is located on the top side of the NCE.

7 Display screen on specified models and displays NCE menus and commands.

8 Display navigation keyypad is used to navigate the display menus and initiate

commands.

9 Cover screw.

5NCE25 Installation Instructions

Table 1: Callout table for NCE25 physical features

Callout Description

10 FC Bus teminal block connects an NCE to an N2 Bus or FC Bus segment. It is not

available on all models.

11 End-of-Line (EOL) Termination Switch sets the NCE as an EOL terminating device. Set

the EOL switch according to the NCE position on the N2 or FC Bus segment.

12 SA Bus Terminal Block connects the NCE field controller to the SA Bus.

13 Standard USB port.

14 Universal inputs and Binary input terminal blocks are located on the bottom side of

the NCE. See Input and output wiring guidelines.

15 Ethernet port RJ-45 8-pin modular jack connects the NCE to the IP network.

16 RS-232 Serial port.

17 Modem Jack - 6 pin modular jack, only on NCE models with optional internal

modems.

Wiring

Power supply, network, and communication connections

See Figure 3 for the location of the NCE’s power supply terminal, bus terminals and ports, USB port,
Ethernet port, and modem port.

Important: Modem functions are available with Metasys Release 9.0, but are not available if
you update the NCE25 to Release 9.0.7.

Note: Do not remove the red terminal block keys from the board mounted terminal blocks as
this can cause a removable terminal plug being plugged into the wrong terminal block, which
can cause the network engine to malfunction.

The NCE25 supports Modbus, M-Bus, and KNX integrations when upgraded to Release 9.0.7.

24~ supply power terminal block

The 24~ supply power terminal block is a gray, keyed, removable 3-terminal block located on the
top side of all NCE models. See Figure 3, Figure 11, and Figure 12.

In North America, the NCE25 requires a Class 2, 24 VAC, 25 VA minimum power supply. Outside
North America, use a 24 VAC SELV transformer at the appropriate rating. A minimum input voltage
of 20 VAC is required for the network engine to operate properly.

Note: The maximum power consumption of an NCE25 is 25 VA, but that does not include
power for internally sourced BO points. Applications that provide power to BO points and CO
points configured as BO points can require up to 125 VA of additional power over the 25 VA
minimum required for the NCE25.

SA Bus terminal block

All NCE models provide a brown, keyed, removable 4 terminal Sensor/Actuator (SA) Bus terminal
block. See Figure 3. Connect the 4-wire SA Bus cable to the SA BUS terminal block. See SA Bus rules.

SA Bus modular port

The 6-Pin modular SA Bus port is available on all NCE models. See Figure 3 and Figure 4. The SA Bus
port connects to the following:

NCE25 Installation Instructions6

• A Wireless Commissioning Converter (MS-BTCVT-1) to commission the network engine with the
Controller Commissioning Tool.

• A DIS1710 Local Controller Display to provide a display screen on NCE25 models without an
integral display screen.

• An NS Series Network Sensor to provide room temperature data to the network engine.

Figure 4: Pin number assignments for Sensor, SA

Bus, and FC Bus Ports on NCE, FEC, IOM, and VMA16

FC Bus terminal block

The blue, keyed, removable 4-terminal block FC BUS terminal block is designed for RS485 serial
protocol field buses and is available on NCE models that support N2 Bus or MS/TP FC Bus
applications. See Figure 3 for more information. You can complete the following connections:

• Connect the 3-wire N2 Bus to the FC BUS terminal block on NCE models that support N2 Bus
applications. See Figure 3 and N2 Bus rules for more information.

• Connect the 3-wire MS/TP FC Bus to the FC BUS terminal block on NCE models that support MS/
TP FC Bus applications. See Figure 3 and MS/TP FC Bus rules for more information.

The SHLD terminal on the FC BUS terminal block is a convenient terminal to connect cable shield
drains in daisy-chain bus applications that use shielded cable.

LonWorks network terminal block

Note: LonWorks® is no longer supported for an NCE at Release 9.0.7. All NCEs that feature the
LonWorks integration remain at Release 9.0 or earlier.

The blue, keyed, removable, 3-position LON terminal block connects a LonWorks network trunk
to NCE25 models that support a LonWorks network trunk. The Shield (SHD) on the LON terminal
block is soft grounded to the network engine chassis terminal, and you can use it as a convenient
terminal to connect cable shield drains in daisy-chain bus applications that use shielded cable.

FC Bus modular port

The 6-pin modular FC BUS port is available only on NCE models that support MS/TP FC Bus
applications (Figure 3 and Figure 4). Connect a Wireless Commissioning Converter (MS-BTCVT-1) to
the modular FC BUS port to commission the NCE with the CCT.

RS232C serial port

For a network engine updated with Release 9.0.7, the RS232C serial port only outputs information
during startup to a VT100 or a computer with a VT100 emulator. For a network engine at 9.0.7
configured with vendor integrations, the RS232C serial port provides a direct connection to a
Modbus RTU or M-Bus network using a standard 9-pin female data terminal equipment (DTE) to 9­pin female DTE null modem cable. You can integrate only one device on this port.

7NCE25 Installation Instructions

Standard USB port

A network engine updated to Release 9.0.7, does not support modem functionality through
the USB port. However, for a network engine with vendor integrations, you can configure the
vendor integration to use an external flash drive connected to the USB port to capture diagnostic
information when the engine is in diagnostic mode.

Ethernet port

The Ethernet port, labeled ETHERNET, is an 8-pin RJ-45 network port for connecting the network
engine to Ethernet networks (10 or 100 Mbps). For a network engine configured for vendor
integrations, use this port for connecting a Modbus TCP, M-Bus TCP, or KNX network.

Internal modem

Modem functionality for NCE25 models that feature an internal modem is removed supported
when you update the NCE25 with Release 9.0.7. If your application requires a modem, image the
engine with Release 9.0.

Wiring rules for networks and field buses

All NCE25 Series models are designed to connect to Ethernet IP networks and support a single SA
Bus.

A network engine also supports an MS/TP field bus trunk, an N2 Bus trunk, and up to two vendor
integrations. For example, an NCE support two Modbus, two M-bus, or one of each. If a KNX
integration is required, an NCE25 supports only one KNX IP Integration.

IP Ethernet network rules

All NCE25 models are designed to connect to properly configured IP Ethernet networks. Observe
the IP Ethernet network rules in the following table.

Note: You can find the Media Access Control (MAC) address on a label on the network engine
housing.

Table 2: Ethernet network rules

Category Rules/maximums allowed

General Star topology with network hubs/switches.

Number of devices Maximum number of supervisory devices that you can connect to

one site in the Metasys system depends on the Metasys server. For
details, refer to Metasys System Configuration Guide (LIT-12011832).

2,000 m (6,561 ft) for plastic/glass fiber optic with external adapter.Line length and type

100 m (328 ft) CAT5 cable.

Terminations For 10/100 BaseT, no line terminators allowed.

MS/TP FC Bus rules

The MS/TP FC Bus connects FECs, VMA1600s, IOMs, TEC Series thermostats, and third-party MS/TP
controllers to NCE256x models.

NCE256x models support an FC Bus trunk with up to 32 MS/TP devices. Observe the rules in the
following table when designing and installing the connected FC Bus.

NCE25 Installation Instructions8

Table 3: FC Bus rules

Category Rules/maximums allowed

General One FC Bus with up to 32 MS/TP devices (on NCE256x models only).

Note: An FC port on a network engine can connect to only one
bus segment on an FC Bus.

Only a daisy-chain topology is allowed (no T or Star topology
configurations).

Number of devices One FC Bus Supports up to 32 MS/TP controllers on a single FC Bus

segment.

Cable length for FC bus

FC Bus can be up to 1,520 m (4,987 ft) using 0.6 mm (22 AWG) 3-wire
twisted, shielded cable.

When using fiber-optic connections: 2,010 m (6,594 ft) between two
fiber-optic modems.

Cable Stranded 0.6 mm (22 AWG) 3-wire twisted, shielded cable is

recommended.

Stranded 0.6 mm (22 AWG) 4-wire (two twisted-pairs) shielded cable
is acceptable.

Note: Ensure the + and - bus leads are a twisted pair. On
applications using 4-wire (two twisted-pairs) cable, isolate and
insulate unused conductor. Refer to the MS/TP Communications
Bus Technical Bulletin (LIT-12011034) for more information.

EOL termination on the FC
bus

The EOL switch must be set to On (or an EOL terminator installed)
on the two devices located at either end of each bus segment on
an FC Bus. The EOL switches must be set to Off (or EOL termination
disabled) for all other devices on the bus segment on an FC Bus. See

Setting the end-of-line switch for information on setting the EOL

switch.

SA Bus rules

The SA Bus connects the Metasys Input/Output Modules (IOMs), NS Series Network Sensors,
DIS1710 Local Controller Display, specified variable frequency drives, and Wireless Commissioning
Converter (MS-BTCVT-1) to an NCE.

Observe the rules in the following table when designing and installing the SA Bus for your
application.

Table 4: SA Bus rules

Category Rules/limits

General Each bus supervisor supports one SA Bus.

Number of devices
supported on the bus

The SA Bus supports up to 10 devices.

Note: The SA Bus supervisor provides power for the NS
network sensors on the bus. Due to power limitations, only 4
of the 10 devices on a SA Bus can be NS sensors. The SA Bus on
NCE25 models that have an integral Local Controller Display do
not support an optional DIS1710 Local Controller Display.

The SA Bus does not support repeaters.

9NCE25 Installation Instructions

Table 4: SA Bus rules

Category Rules/limits

Cable length for SA Bus

365 m (1,198 ft) maximum bus length.

152 m (500 ft) maximum between an NS network sensor and the
bus supervisor FEC or VMA supplying power to the sensor) using
bus cable connected to the SA Bus screw terminal blocks.

30 m (98 ft) maximum length for network sensors using bus cables
connected to the 6-pin modular jack (6-Pin SA Bus port).

366 m (1,198 ft) maximum Bus Length.

1.5 m (5 ft) maximum between the network engine and DIS1710
Local Controller Display.

Recommended bus cable
type

Screw Terminal Connections: 0.6 mm (22 AWG) Stranded 4-wire, 2­Twisted Pairs, Shielded Cable for screw terminals.

Modular Jack Connections: 6-Pin Modular Connectors with 24 or
26 AWG 6-Wire, 3 Twisted-Pairs.

EOL termination on the SA
Bus

Each SA Bus supervisor has integral (fixed ON) EOL termination,
which typically provides sufficient EOL termination on a SA Bus.
Long SA Bus runs or persistent communication problems on a SA
Bus may require EOL termination at the last device on the SA Bus in
addition to the integral EOL termination at the SA Bus supervisor)
All NCE25 models are SA Bus supervisors.

N2 Bus rules

The N2 Bus connects N2 controllers to specified NCE25 models. NCE251x models support a single
N2 Bus trunk with up to 32 N2 devices.

Observe the rules in the following table when designing and installing the connected N2 Bus.

Table 5: N2 Bus rules

Category Rules/maximums allowed

One N2 trunk supported (on NCE251x models only).General

Only daisy-chained devices (with maximum stub length of 3 m [10
ft] to any device).

Number of N2 devices
supported

Cable Solid or stranded 1.0 mm (18 AWG) 3-wire is recommended. Solid

Bus termination N2 devices are self-terminating and have no EOL setting.

Up to 32 N2 devices supported on the N2 trunk.

1,500 m (4,921 ft) twisted pair cable.Cable length and type

2,000 m (6,561 ft) between two fiber modems.

or stranded 0.5 mm (24 AWG) larger 3-wire or 4-wire (two twisted­pairs) is acceptable.

Note: Ensure the + and - bus leads are a twisted pair. On
applications using 4-wire (two twisted-pairs) cable, isolate and
insulate unused conductor.

NCE25 Installation Instructions10

Modbus RTU rules

The RS-232 port supports the connection of one Modbus RTU (RS-232) device. With the addition
of an RS-232/RS-485 converter and connection to the RS-232 port, up to 32 Modbus RTU (RS-485)
devices are supported. Observe the rules in the following table when designing and installing the
connected Modbus RTU Bus.

Table 6: Modbus RTU rules table

Category Rules/maximums allowed

General Supports one direct Modbus RTU (RS-232) connection to the RS232C port.

A connection of an RS-232/RS-485 converter to the RS232C port supports
up to 32 Modbus (RS-485) devices.

FC port does not support Modbus integration.

Number of Devices RS232C port supports one Modbus RTU (RS-232) device.

RS232C port with RS-232/RS-485 converter supports up to 32 Modbus
(RS-485) devices.

Cable Length RS-232 cable length can be up to 15 m (49.2 ft).

RS-485 cable length can be up to 1,520 m (4,987 ft).

Cable RS-232 stranded cable, 3-9 conductors, serial data grade, 20–24 AWG.

RS-485 stranded cable, 0.6 mm (22 AWG) 3-wire twisted, shielded cable is
recommended. Stranded 0.6 (22 AWG) 4-wire (two twisted pairs) shielded
is acceptable.

EOL Termination RS-232: requires no termination.

RS-485: End-of-line (EOL) termination must be set to On (or an EOL
terminator installed) on the two devices located at either end of each
bus segment on an RS-485 bus. The EOL switches must be set to Off (or
EOL termination disabled) for all other devices on the bus segment on an
RS-485 bus.

11NCE25 Installation Instructions

M-Bus protocol rules

Note: Unit load is a defined standby current. A device is permitted a current drain of one
unit load by default but may consume more if it is shown at the device (by an integer) and in
documentation. Use M-Bus Repeaters to increase the length and the number of unit loads
permissible.

Table 7: Rules for M-Bus protocol

Category Rules/maximums allowed

General Supports one direct M-Bus serial (RS-232) connection to the RS232C port.

Connection requires an RS232-to-M-Bus Level Converter on the RS232C
port.

FC port does not support M-Bus integration.

No restrictions in topology, but Bus topology is strongly recommended.

Number of devices Depends on level converter (logical maximum is 250 devices).

Line length and type

Length depends on cable resistance, capacitance, number of devices,
position of devices, and configured communication speed. Example
scenarios to help with calculation:

Baud
rate

Maximum number
of unit loads

Maximum
distance between
converter and

Maximum
distance for entire
Bus

devices

2,400

64 3,000 m (9,842 ft) 5,000 m (16,404 ft)

(2 x 1.0 mm (18
AWG), shield
recommended,
resistance < 90
Ohms)

64 1,000 m (3,281 ft) 4,000 m (13,123 ft)

(2 x 1.0 mm (18
AWG), shielded,
resistance < 90
Ohms)

250 350 m (1,148 ft) 4,000 m (13,123 ft)

(2 x 0.8 mm (20
AWG), shielded,
resistance < 30
Ohms)

9,600 64 350 m (1,148 ft) 4,000 m (13,123 ft)

(2 x 0.8 mm (20
AWG), shielded,
resistance < 30
Ohms)

NCE25 Installation Instructions12

Table 7: Rules for M-Bus protocol

Category Rules/maximums allowed

250 350 m (1,148 ft) 1,000 m (3,281 ft)

(2 x 0.8 mm (20
AWG), shielded,
resistance < 30
Ohms)

38,400 64 350 m (1,148 ft) 1,000 m (3,281 ft)

(2 x 0.8 mm (20
AWG), shielded,
resistance < 30
Ohms)

Cable Twisted pair cable (shielding optional).

Termination No termination.

KNX protocol rules

Table 8: Rules for KNX protocol

Category Rules/maximums allowed

General No restrictions in topology.

Number of devices Depends on chosen topology and cable type.

Line length and type Twisted pair cable recommended; length depends on cable resistance,

capacitance, number devices, position of devices, and communication
speed.

Cable Copper, solid and stranded wires with outer sheath, one- or two-

twisted pair; 0.8 mm to 1.0 mm (20 to 18 AWG).

Screen is required and must cover the entire diameter.

Drain wire: Diameter minimum 0.4 mm (26 AWG).

Termination No termination.

Manufacturer's Quality
management system

At least ISO 9002.

Dual trunk options

Table 9: Dual trunk options

Trunk type Supported dual trunk application

Modbus

M-Bus

1 RS232

1 TCP

2 TCP

1 RS232

1 TCP

2 TCP

13NCE25 Installation Instructions

Table 9: Dual trunk options

Trunk type Supported dual trunk application

Modbus and M-Bus

1 RS232 Modbus

1 TCP M-Bus

1 RS232 M-Bus

1 TCP Modbus

1 TCP Modbus

1 TCP M-Bus

Wiring

Important: Do not connect 24 VAC supply power to the NCE before finishing wiring and
checking all wiring connections. Short circuits or improperly connected wires may result in
permanent damage to the equipment.

Important:

• Use copper conductors only. Make all wiring in accordance with local, national, and regional
regulations. The NCE is a low-voltage device (<30 VAC) in North America and an extra low­voltage device in Europe. Do not exceed the NCE electrical ratings.

• Do not remove the terminal block keys. The terminal block plugs and the terminal sockets
are keyed to fit together in the correct configuration only.

• Prevent any static electric discharge to the NCE. Static electric discharge can damage the
NCE and void any warranties.

• Ensure the network and field bus wiring meets the specifications, rules, and guidelines in
the Power supply, network, and communication connections section in this document.

Mount the network engine securely before wiring.

Follow these guidelines when wiring a network engine:

• Route the supply power wires and communication cables at least 50 mm (2 in.) away from the
vent slots on the sides of the network engine housing.

• Provide slack in the wires and cables. Keep cables routed neatly around the network engine to
promote good ventilation, LED visibility, and ease of service.

Wiring for N2, MS/TP, or Modbus RTU Protocol

1. Connect the Ethernet cable to the RJ-45, 8-pin Ethernet port as shown in NCE25 physical

features.

2. Connect the BAS network cables to the appropriate ports.

3. For Modbus RTU protocol using the RS232C serial port, use a cable to connect the RS-232/
RS-485 converter to the RS232C serial port on the network engine.

Note: The maximum cable length between devices connected though an RS-232 line
depends on the baud rate used. In general, at 9600 baud ensure the length does not
exceed 15 meters.

4. Wire from the RS-485 terminal on the converter to the RS-485 port on the vendor device. The

NCE25 Installation Instructions14

RS-485 bus is a two-wire network. See Figure 5.

a. Connect the converter's + A terminal to the device's + (or A) terminal.

b. Connect the converter's - B terminal to the device's - (or B) terminal.

c. If the device has a Signal Ground or Reference terminal, connect this to the converter's

CG2 terminal.

Figure 5: Connection between converter and device

5. To add additional vendor devices, terminate the wires from one device to the next as shown in
Figure 6. There must be no more than two wire connected to each terminal to ensure the daisy
chain configuration is used.

Figure 6: Daisy Chained Devices

Note: Ensure the completed wiring looks similar to the following figure.

15NCE25 Installation Instructions

Figure 7: Modbus RTU Wiring Detail Overview

6. Connect the 24 VAC supply power wires from the transformer to the removable power terminal
block plug on the network engine as shown in the following figure.

Figure 8: 24 VAC Supply Power Wiring

Note: Power supply wire colors may be different on transformers not manufactured by

Johnson Controls. Follow the transformer manufacturer’s instructions and the project
installation drawings.

7. Connect the 24 VAC supply power wires from the transformer to the converter. No additional
external power adapter is required. Terminate the hot and common wires as you need. The
network engine does not require an earth ground connection.

Note: The 24 VAC power should be terminated to all network devices so transformer
phasing is uniform across the devices. Powering network devices with uniform 24 VAC
supply power phasing reduces noise, interference, and ground loop problems.

Wiring for serial M-Bus Protocol

1. Connect the Ethernet cable to the RJ-45, 8-pin Ethernet port shown in NCE25 physical features.

2. Connect from the RS232C serial port on the network engine to the RS-232 connecter of the
level converter. Wire to terminals GND, RxD, and TxD as shown in NCE25 physical features.

3. Wire from the M- and M+ terminals on the level converter (Figure 9) and to use the line (daisy-

NCE25 Installation Instructions16

chain) topology, especially for long distances and many devices. Specific cabling can vary
depending on the topology and site.

Note: If the number of M-Bus unit loads or distances exceeds the specifications of a level
converter, youcan wire a M-Bus repeater to the converter to increase the number of unit
loads and distances. The converter shown in Figure 9 is capable of handling up to six units
loads, while other models can handle up to 100.

4. Connect the 24 VAC supply power wires from the transformer to the removable power terminal
block plug.

Note: Power supply wire colors may be different on transformers not manufactured by
Johnson Controls®. Follow the transformer manufacturer’s instructions and the project
installation drawings.

5. Connect the 24 VAC supply power wires from the transformer to the -/~ and +/~ terminals as
shown in Figure 9.

Figure 9: M-Bus Level Converter

Wiring for KNX Protocol

1. Connect an Ethernet cable to the RJ-45, 8-pin Ethernet port shown in NCE25 physical features.

2. Connect another Ethernet cable to the port on the front of the KNX gateway (Figure 10).

Note: Depending on the size of your KNX network, you can use either a KNX Interface or
KNX Router as an access point to the KNX network. The interface connects the network
engine to a single KNX line, while the router acts as both an interface and a line coupler
over Ethernet to connect the NCE to the network.

17NCE25 Installation Instructions

Figure 10: KNX/IP Interface Router

3. For a single KNX line, wire from the red and black terminals on the gateway to the devices. For
multiple KNX lines, wire from the red and black terminals on each gateway to the devices on
the same KNX line.

Note: Specific cabling can vary depending on the topology and site. See Wiring rules for

networks and field buses.

4. Wire each KNX gateway to its own dedicated power supply on the KNX line.

Wiring input and output terminals

NCE25 Series models support up to 33 hard-wired I/O points including:

• 7 BO points

• 4 CO points

• 4 AO points

• 8 BI points

• 10 UI points

See Figure 11, Figure 12, and Table 12 for more information.

I/O points are compatible with multiple types of input and output and most of the points are
configured in the CCT software.

NCE25 Installation Instructions18

Figure 11: NCE25 series output terminal blocks, Binary output jumpers,

and supply power terminal block as viewed from the top of an NCE25

Table 10: Call-out table for NCE25 series output terminal blocks, binary output jumpers, and supply
power terminal block as viewed from the top of an NCE25

Callout Description

1 Binary output - Two jumpers positioned for an internal source of power.

2 Binary outputs are 24 VAC Triac outputs.

3 Back of NCE (Flush to mounting surface).

4 Analog outputs can be defined as:

• Voltage Analog outputs (0-10 VDC)

• Current Analog outputs (4-20 mA)

5 24 VAC, Class 2 supply power terminal block. The center terminal is not used.

6 Configurable outputs can be defined as the following:

• Voltage Analog outputs (0-10 VDC)

• Binary outputs (24 VAC Triac)

7 Front of NCE.

8 Binary output - Four jumpers positioned for an external source of power.

9 Required jumper positons for setting a Binary output's power source.

Figure 12: Universal input and Binary input terminal

blocks as viewed from the bottom of an NCE25

19NCE25 Installation Instructions

Table 11: Call-out table for Universal input and Binary input terminal blocks as viewed from the
bottom of an NCE25

Callout Description

1 Universal inputs can be defined as the following:

• Voltage Analog inputs (0 -10 VDC)

• Current Analog inputs (4-20 mA)

• Resistive Analog inputs (0-2k Ohm)

- RTD: 1k Nickel, 1k Platinum, or A99B SI

- NTC: 10k Type L or 2.225k Type 2

• Dry contact Binary inputs

2 Front of NCE.

3 Binary inputs can be defined as:

• Dry contact maintained

• Pulse counter mode (50 Hz at 50% Duty Cycle)

4 Back of NCE (Flush to Mounting Surface)

Terminal functions, ratings, requirements, and
wiring guidelines

Input and output wiring guidelines

Table 12 provides information and guidelines about the functions, ratings, and requirements for
the NCE input and output terminals and references to guidelines for determining proper wire sizes
and cable lengths.

In addition to the wiring guidelines in Table 12, observe these guidelines when wiring inputs and
outputs:

• Run all low-voltage wiring and cables separate from high-voltage wiring.

• Ensure all input and output cables, regardless of wire size or number of wires, consist of
stranded, insulated, and twisted copper wires.

• Shielded cable is not required for input or output cables.

• Shielded cable is recommended for input and output cables that are exposed to high
electromagnetic or radio frequency noise.

NCE25 Installation Instructions20

Terminal wiring and cable length guidelines

Table 12: Terminal wiring

Terminal block
label

UNIVERSAL

(Inputs)

Terminal labels Function, ratings, and

requirements

+15 V 15 VDC Power Source for

active (3-wire) input devices
connected to the Universal INn
terminals.

Provides 100 mA total current.

INn

Analog Input - Voltage Mode
(0–10 VDC)

10 VDC maximum input voltage
Internal 75k Ohms Pulldown.

Analog Input - Current Mode
(4–20 mA)

Internal 100 Ohms load
Impedance.

Analog Input - Resistive Mode
(0–600k Ohms)

Internal 12 V, 15k Ohms pull up.

Determine wire size
and maximum cable
length

Same as Universal INn.

Note: Use 3-wire
cable for devices
that source power
from the +15 V
terminal.

See Guideline A in Table

13.

See Guideline B in Table

13.

See Guideline A in Table

13.

BINARY

(Inputs)

Qualified Sensors: 0–2k
potentiometer, RTD (1k Nickel
[Johnson Controls sensor], 1k
Platinum, and A99B Silicon
Temperature Sensor) NTC
Sensor (10k Type L, 10k JCI Type
II, 2.252k Type II).

Binary Input - Dry Contact
Maintained Mode1 second
minimum pulse width Internal
12 V, 15k Ohms pull up.

ICOMn Universal Input Common for

all Universal IN terminals

Note: All Universal
ICOMn terminals share a
common, which is isolated
from all other commons.

INn Binary Input - Dry Contact

Maintained Mode

0.01 second min. pulse width.

Internal 18 V, 3k Ohms pull up.

See Guideline A in Table

13.

Same as (Universal)
INn.

See Guideline A in Table

13.

21NCE25 Installation Instructions

Table 12: Terminal wiring

Terminal block
label

ANALOG

(Outputs)

Terminal labels Function, ratings, and

requirements

Binary Input - Pulse Counter
Mode

0.01 second min. pulse width.

(50 Hz at 50% duty cycle).

Internal 18 V, 3k Ohms pull up.

ICOMn Binary Input Common for all

Binary Input (IN) terminals

Note: All Binary ICOMn
terminals share a
common, which is isolated
from all other commons,
except the CO common
(OCOMn) when the CO is
defined as an AO.

OUTn Analog Output - Voltage Mode

(0–10 VDC)

10 VDC maximum output
voltage.

Determine wire size
and maximum cable
length

See Guideline A in Table

13.

10 mA maximum output
current.

Requires an external load of
1,000 Ohms or more.

Note: The AO operates
in Voltage Mode when
connected to devices
with impedances greater
than 1,000 Ohms. Devices
that drop below 1,000
Ohms may not operate as
intended for Voltage Mode
applications.

NCE25 Installation Instructions22

Table 12: Terminal wiring

Terminal block
label

BINARY

(Outputs)

Power Selection
Jumper
positioned to
External (EXT).

Terminal labels Function, ratings, and

requirements

Analog Output - Current
Mode (4–20 mA)

Requires an external load
between 0–300 Ohms.

Note: The AO operates
in Current Mode when
connected to devices with
impedances less than 300
Ohms. Devices that exceed
Ohm may not operate as
intended for Current Mode
applications.

OCOMn Analog Output Signal

Common for all Analog OUT

terminals

Note: All Analog OCOMn
terminals share a
common, which is isolated
from all other commons.

OUTn Binary Output - 24 VAC Triac

(External Power)

Connects OUTn to OCOMn
when activated.

External Power Source:

30 VAC maximum output
voltage.

Determine wire size
and maximum cable
length

See Guideline B in Table

13.

Same as (Analog) OUTn.

See Guideline C in Table

13.

OCOMn Binary Output Common (for

0.5 A maximum output current.

1.3 A at 25% duty cycle.

Maximum 6 cycles/hour with
M9220-BGx-3.

40 mA minimum load current.

OUTn terminal)

Note: Each Binary
Output common terminal
(OCOMn) is isolated
from all other commons,
including other Binary
Output commons.

23NCE25 Installation Instructions

Table 12: Terminal wiring

Terminal block
label

BINARY

(Outputs)

Power Selection
Jumper
positioned to
Internal (INT).

Terminal labels Function, ratings, and

requirements

OUTn Binary Output - 24 VAC Triac

(Internal Power)

Sources internal 24 VAC power
(24~ HOT).

OCOMn Binary Output - 24 VAC Triac

(Internal Power)

Connects OCOMn to 24~ COM
when activated.

Internal Power Source:

30 VAC maximum voltage to
load.

0.5 A maximum output current.

1.3 A at 25% duty cycle.

Maximum 6 cycles/hour with
M9220-BGx-3.

Determine wire size
and maximum cable
length

See Guideline C in Table

13.

CONFIGURABLE

(Outputs)

OUTn

40 mA minimum load current.

Analog Output - Voltage Mode
(0–10 VDC)

10 VDC maximum output
voltage.

10 mA maximum output
current.

Requires an external load of
1000 Ohms or more.

Binary Output 24 VAC Triac

Connects OUT to OCOM when
activated.

External Power Source:

30 VAC maximum voltage to
load.

0.5 A maximum output current.

1.3 A at 25% duty cycle.

Maximum 6 cycles/hour with
M9220-BGx-3.

See Guideline A in Table

13.

See Guideline C in Table

13.

NCE25 Installation Instructions24

40 mA minimum load current.

Table 12: Terminal wiring

Terminal block
label

Terminal labels Function, ratings, and

requirements

Determine wire size
and maximum cable
length

OCOMn Analog Output Signal

Common: All Configurable

Same as (Configurable)

OUTn.
Outputs defined as Analog
Outputs share a common,
which is isolated from all other
commons except the Binary
Input common.

Binary Output Signal
Common: All Configurable

Outputs defined as Binary
Outputs are isolated from all
other commons, including
other Configurable Output
commons.

The following table defines cable length guidelines for the various wire sizes can may be used for
input and output wiring.

Table 13: Cable length guidelines for recommended wire sizes

Guideline Wire size/gauge and type Maximum cable

length and type

A

1.0 mm (18 AWG) stranded copper 457 m (1,500 ft) twisted
wire

0.8 mm (20 AWG) stranded copper 297 m (975 ft) twisted
wire

0.6 mm (22 AWG) stranded copper 183 m (600 ft) twisted
wire

0.5 mm (24 AWG) stranded copper 107 m (350 ft) twisted
wire

B

1.0 mm (18 AWG) stranded copper 229 m (750 ft) twisted
wire

0.8 mm (20 AWG) stranded copper 137 m (450 ft) twisted
wire

0.6 mm (22 AWG) stranded copper 91 m (300 ft) twisted
wire

0.5 mm (24 AWG) stranded copper 61 m (200 ft) twisted
wire

Assumptions

100 mV maximum
voltage drop

Depending on the
cable length and the
connected input or
output device, you
may have to define
an offset in the setup
software for the input
or output point.

100 mV maximum
voltage drop

Depending on the
cable length and the
connected input or
output device, you
may have to define
an offset in the setup
software for the input
or output point.

25NCE25 Installation Instructions

Table 13: Cable length guidelines for recommended wire sizes

Guideline Wire size/gauge and type Maximum cable

length and type

C See Figure 13 to select wire size/

gauge. Use stranded copper wire.

See Figure 13 to
determine cable
length. Use twisted
wire cable.

Assumptions

N/A

Maximum cable length versus load current

In most cases inputs/outputs with cables less than 30 m (100 ft) do not require an offset in the
software setup. Cable runs over 30 m (100 ft) may require an offset in the input/output software
setup.

Use Figure 13 to estimate the maximum cable length relative to the wire size and the load current
(in mA) when wiring inputs and outputs.

Figure 13: Maximum wire length by current and wire size

Communications Bus and supply terminal blocks, functions,
ratings, requirements, and cables

Table 14: Communications bus and supply terminal blocks, functions, ratings, requirements, and
cables

Terminal
block/port
label

FC BUS

NCE25 Installation Instructions26

Terminal
labels

+
_

COM Signal Reference (Common) for bus

SHLD Isolated terminal (optional shield drain

Function, electrical ratings/requirements Recommended cable

FC Bus Communications

communications

connection)

type

0.6 mm (22 AWG)
stranded, 3-wire
twisted, shielded cable
recommended

Table 14: Communications bus and supply terminal blocks, functions, ratings, requirements, and
cables

Terminal
block/port
label

FC Bus
(port)

SA BUS

SA BUS
(Port)

Terminal
labels

+
_

COM SA Bus Signal Reference and 15 VDC Common

SA PWR 15 VDC Supply Power for Devices on the SA

Function, electrical ratings/requirements Recommended cable

6-Position Modular Connector provides:

• FC Bus Communications

• FC Bus Signal References and 15 VDC
Common

• 15 VDC Power for Wireless Commissioning

• Converter or ZFR1811 Wireless Router

SA Bus Communications

Bus (Maximum total current draw for SA Bus
is 240 mA.)

6-Position Modular Connector provides:

• SA Bus Communications

• SA Bus Signal References and 15 VDC
Common

• 15 VDC Power for devices on the SA Bus
and

• Wireless Commissioning Converter

type

Wireless Commissioning
Converter retractable
cable or 24 AWG 3-pair
CAT 3 Cable <30.5 m (100
ft)

0.6 mm (22 AWG)
stranded, 3-wire
twisted, shielded cable
recommended

Note: The + and

- wires are one
twisted pair and
the COM and SA
PWR are the second
twisted pair of wires.

24 AWG 3-pair CAT 3
Cable <30.5 m (100 ft)

24~

Note:

• See Table 13 to determine wire size and cable lengths for cables other than the
recommended cables.

• The SA Bus and FC Bus wiring recommendations in this table are for MS/TP bus
communications at 38.4k baud. For more information, refer to the MS/TP Communications

Bus Technical Bulletin (LIT-12011034).

HOT 24 VAC Power Supply - Hot

Supplies 20-30 VAC (Normal 24 VAC)

COM 24 VAC Power Supply Common (Isolated

from all other Common terminals on
controller)

0.8 mm to 1.5 mm (20 to
16 AWG) 2-wire

FC and SA Bus and supply power wiring guidelines

Table 14 provides information about the functions, ratings, and requirements for the NCE
communication bus and supply power terminals, and guidelines for wire sizes, cable types, and
cable lengths when wiring the communication buses and supply power.

27NCE25 Installation Instructions

In addition to the guidelines in Table 14, observe these guidelines when wiring the SA/FC Buses and
supply power:

• Run all low-voltage wiring and cables separate from high-voltage wiring.

• Use twisted, insulated, stranded copper wire for all FC and SA Bus cables, regardless of wire size.

• Shielded cable is strongly recommended for all FC and SA Bus cables.

• Refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034) for detailed information
regarding wire size and cable length requirements for the FC and SA buses.

Setup and adjustments

Data protection battery

The battery is pre-installed and connected in the network engine when shipped. Do not disconnect
the battery for any reason other than to replace a defective battery.

Important: If you are installing a new battery for the first time or you are replacing the
battery, disconnect the power from the NCE25 prior to inserting a new battery.

The 24 VAC supply power to the network engine charges the data protection battery. At initial
startup, the battery may require a charging period of at least 4 hours before it supports data
protection if power fails. Maximum protection (up to 3 consecutive power failures without
recharging time) requires a 15-hour charging period.

With the 24 VAC supply power, the battery slowly loses charge. If the battery completely loses
charge, the network engine real-time clock stops.

Whenever a network engine is disconnected from 24 VAC power for over 30 days, ensure that the
real-time clock is set properly and that the network engine and there is enough power to recharge
the data protection battery.

Powering on the network engine

After applying 24 VAC power, the network engine requires approximately five minutes to become
operational. See LED Test Sequence at Startup.

Startup is complete and the network engine is operational when the green RUN LED is On steady
and the red FAULT LED is Off (Figure 16).

Important: Wait for the network engine to complete the start-up sequence and the RUN LED
to go On steady before initiating any other action on the network engine.

Disconnecting power from the network engine

When 24 VAC supply power to a network engine is disconnected or lost, the network engine
is nonoperational, but the POWER LED (Figure 16) remains on and the data protection battery
continues to power the network engine for several (approximately one to eight) minutes while
volatile data is backed up in nonvolatile memory. The RUN LED goes off when data backup and
shutdown is complete.

Important: You must install and charge the data protection battery before disconnecting the
24 VAC supply power.

Setting the end-of-line switch

RS485 serial protocol bus segments require proper EOL termination to reduce interference from
signal bounce back on the bus segment.

FC Bus MS/TP applications require a terminated device at each end of each FC Bus segment. See
the MS/TP FC Bus rules section for more information on EOL requirements on an FC Bus.

NCE25 Installation Instructions28

N2 Bus applications are self terminating and have no EOL setting. See the N2 Bus rules section for
more information on EOL requirements on an N2 Bus.

The NCE25 models that support MS/TP FC Bus applications or N2 Bus applications have an EOL
switch, which must be set according to the position of the NCE on the FC Bus or N2 Bus segment.
The NCE25 is shipped with the EOL switch in the factory default, ON (up) position (Figure 14).

Figure 14: FC bus EOL switch in the factory default ON (Up) position

See the following figure to determine the appropriate EOL switch setting for the NCE in your field
bus application.

Figure 15: EOL switch setting relative to NCE position on the N2 Bus or FC bus segment

Setting the network and device addresses

You must assign a new IP network address to the NCE25, so it can communicate on the IP Ethernet
network. The network engine MAC address on a label on the housing.

The network engine is always the SA Bus supervisor and, therefore, always has a fixed device
address of 0 on the SA Bus.

The supervisory controller on NCE25 models that support an (MS/TP) FC Bus is always an FC Bus
supervisor and has a fixed device address of 0 on the FC Bus. The field controllers in all the NCE25
models have fixed device addresses of 4 on the network engine FC Bus.

Refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034) for more information on
device addresses on (MS/TP) FC Buses and SA Buses.

29NCE25 Installation Instructions

NCE25 models that support an N2 Bus are always bus supervisors on the N2 Bus. They do not
require a user assigned device address to communicate on the N2 Bus.

Binary output source power selection jumpers

The BO source power selection jumpers determine whether a BO provides internal power (sourced
from the network engine) to the output load (INT position) or requires an external power source
(EXT position) for the output load. Figure 11 shows an example of the NCE controller BOs and the
associated power selection jumpers next to the BO terminal blocks.

Position the jumpers next to the BO terminals to provide either internal 24 VAC power to the BO
load or act as a switch for an externally powered BO. Each NCE25 BO wired in an application must
have the jumpers positioned properly for the application. See Figure 11.

Important: Do not connect an external power source to a BO when the BO power source
jumper is in the internal power (INT) position. Connecting external power to a BO that sources
internal power can damage the controller and void any warranties.

Display screen and display navigation keypad

Specified NCE25 models feature an integral display screen and display navigation keypad. Use
these features to can view and edit the I/O points settings on the network engine. See Figure 3.
Refer to the DIS1710 Local Controller Display Technical Bulletin (LIT-12011270) for more information on
using the display screen and keypad.

Troubleshooting

LED status indicators

The NCE25 models have up to 11 LEDs (depending on model) to indicate power and network
communication status. Figure 16 shows the LEDs and Table 15 describes the LED indications.

Figure 16: NCE/NIE LED designations

LED test sequence at startup

During startup, the network engine automatically initiates an LED test to verify the operational
status of the LEDs. When you turn on the NCE, the following LED lighting sequence occurs:

1. The POWER, BATT FAULT, 10 LINK, FAULT, RUN, and PEER COM LEDs turn On, indicating that
the OS, is starting. (After 2 seconds, the LEDs may change states depending on the site-specific

NCE25 Installation Instructions30

network activity.)

2. The BATT FAULT, PEER COM, and FAULT LEDs shut Off. The RUN LED flashes to indicate that the
NCE software is loading.

3. The LEDs display the operational status of the network engine. When the RUN LED goes On
Steady, startup is complete and the network engine is operational.

The total time to start up the network engine depends on the size of the database and can take
several minutes.

Table 15: LED designations, normal status, and descriptions

LED designation Normal status Descriptions/other conditions

POWER (Green) On steady On Steady = Unit is getting power from either the

battery or 24 VAC power.

Off Steady = Unit is shut down.

FAULT (Red) Off steady Off Steady = Normal operation.

On Steady = General Fault. CCT application may
be corrupted or missing. Some FAULT conditions
are user-configurable in the Metasys software. Pre­configured fault conditions include excessive CPU
flash or memory use, excessive board temperature.

Blink - 2 Hz = Download or Startup in progress, not
ready for normal operation.

Blink Rapidly - 5 Hz = One or more defined SA
Bus devices are offline. Check SA Bus devices for
problems, including low batteries on wireless
sensor.

SA BUS (Green) Blinking Blinking - 5 Hz = Data Transmission (normal

communication)

Off Steady = No Data Transmission

On Steady = Communication lost, waiting to join
communication ring

FC BUS (Green) Flicker Flicker = Normal communications; the FC Bus

is transmitting and receiving data. Flickers are
generally synchronized with data transmission but
do not use them to indicate specific transmission
times. Off Steady = No field controllers are defined
to FC Bus in the network engine. This LED is always
OFF on LON models with 9.0.7 software.

MODEM RX Flicker Not functional on 9.0.7 engines.

MODEM TX Flicker Not functional on 9.0.7 engines.

BATT FAULT (Red) Off steady On Steady = Battery defective. Flicker = Data

Protection Battery is not installed. Connect or install
battery.

31NCE25 Installation Instructions

Table 15: LED designations, normal status, and descriptions

LED designation Normal status Descriptions/other conditions

ETHERNET (Green) Flicker Flicker = Data is transferring on the Ethernet

connection. Ethernet traffic is general traffic (may
not be traffic to or from the network engine).

Off Steady = No Ethernet traffic, probably indicates a
dead Ethernet network or bad Ethernet connection.

10 LINK (Green) On steady (10 Mbps

network)

100 LINK (Green) On steady (100

Mbps network)

RUN (Green) On steady On Steady = NCE software is running.

PEER COM (Green) Varies Flicker = Data traffic between network engines.

On Steady = Ethernet connection is established at 10
Mbps.

On Steady = Ethernet connection is established at
100 Mbps.

On 1 second, Off 1 second = NCE or NIE software is
in startup mode.

On 0.5 seconds, Off 0.5 seconds = NCE or NIE
software is shutting down.

Off Steady = Operating system is shutting down or
software is not running.

For an NCE or NIE that is not a Site Director, this
LED indicates regular heartbeat communications
with the Site Director. For a single NCE or NIE on a
network without an ADS, there is no flicker.

Accessories

Table 16: NCE25 Accessories Ordering Information

Product Code Number Description

MS-BAT1020-0 Replacement data protection battery for the NCE25. Rechargeable

NiMH battery: 3.6 V 500 mAh, with a typical life of five to seven years at
21°C (70°F).

TL-MAP1810-xx Pocket-sized web server that provides a wireless mobile user interface

to Metasys field controllers, thermostats, and smart rooftop units. Refer
to the Mobile Access Portal Gateway Catalog Page (LIT-1900869) to identify
the appropriate product for your region.

MS-DIS1710-0 Local Controller Display connects to NCE on SA Bus and provides menu

display and navigation keypad for monitoring status and controlling
parameters on the NCE’s integral field controller.

Note: A DIS1710 display does not operate on NCE models that
have an integral controller display.

AS-XFR100-1 Power transformer (Class 2, 24 VAC, 92 VA maximum output), with

enclosure.

AS-XFR010-1 Power transformer (Class 2, 24 VAC, 92 VA maximum output), no

enclosure.

NCE25 Installation Instructions32

Table 16: NCE25 Accessories Ordering Information

Product Code Number Description

MS-EXPORT-0 Metasys Export Utility, which extracts historical trend, alarm, and audit

data from the system and presents the historical data in a variety of
formats.

Note: This option is not necessary for sites that have an ADS/
ADX as the Site Director because it is provided with the ADS/ADX
solution.

Notes:

• Additional Y60 Series transformers are also available.

• The transformers specified here are for North America only. In Europe, you must use an SELV
transformer purchased locally.

Modbus Integrations require one or more vendor model definition (VMD) tables for specific third­party equipment. You can purchase tables from your regional System Integration Services (SIS)
office, or you can create the tables with the VMD Generator Express (VGE) tool. The VGE tool
requires certification and licensing for its use. To obtain a license, attend the training listed in the
following table.

Table 17: VGE Tool Training Registration

Product Code Number Description

C-10077 The VGE Tool Software Training (North America).

The VGE tool is required to generate custom Modbus mapping
tables.

PTK-CONT-25 The VGE Tool Software Training (Europe and Asia).

The VGE tool is required to generate custom Modbus mapping
tables.

Repair information

If you replace a network engine for any reason or add a new network engine to a site, you must
update the site registration to ensure that the new network engine is recognized and able to
communicate.

Except for replacing the data protection battery, the NCE25 cannot be repaired in the field. You
must replace the NCE if it fails to operate. Contact your local Johnson Controls representative.

Note: Batteries removed from this device must be recycled or disposed of in accordance with
local, national, and regional regulations. Only use certified technicians or qualified building
maintenance personnel to service Johnson Controls® products.

33NCE25 Installation Instructions

Ordering information

Table 18: NCE25 Ordering Information (Releases 9.0 and 9.0.7 Only)

Product Code
Number

MS-NCE25xx-x (Base
Features on Each
NCE25)

MS-NCE2500-0

(Europe only)

MS-NCE2506-0

(Europe only)

MS-NCE2510-0 9.0.7 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2511-0 9.0 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2516-0 9.0.7 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2517-0 9.0 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2520-0 9.0 Supports one LonWorks trunk with up to 32 LonWorks devices.

Release Description

N/A Each NCE25 Series model requires a 24 VAC power supply and

includes one RS-232-C serial port, one RS-485 optically isolated
SA Bus port, one USB serial port, one Ethernet port, and an MS­BAT1020-0 Data Protection Battery. Each NCE25 Series model
has 33 integral I/O points and supports up to 128 additional I/O
points on the SA Bus. Supports BACnet IP network.

9.0.7 Base features with no physical field controller trunk connection.

9.0.7 Base features with no physical field controller trunk connection.
Includes integral display screen.

KNX) and one N2 Bus. The number of supported devices on the
third-party trunk depends on the protocol. For the N2 Bus, up to
32 devices are supported.

KNX) and one N2 Bus. The number of supported devices on the
third-party trunk depends on the protocol. For the N2 Bus, up to
32 devices are supported. Includes internal modem.

KNX) and one N2 Bus. The number of supported devices on the
third-party trunk depends on the protocol. For the N2 Bus, up to
32 devices are supported. Includes integral display screen.

KNX) and one N2 Bus. The number of supported devices on the
third-party trunk depends on the protocol. For the N2 Bus, up to
32 devices are supported. Includes integral display screen and
internal modem.

MS-NCE2521-0 9.0 Supports one LonWorks trunk with up to 32 LonWorks devices.

MS-NCE2526-0 9.0 Supports one LonWorks trunk with up to 32 LonWorks devices.

MS-NCE2527-0 9.0 Supports one LonWorks trunk with up to 32 LonWorks devices.

MS-NCE2560-0 9.0.7 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

NCE25 Installation Instructions34

Includes internal modem.

Includes integral display screen.

Includes integral display screen and internal modem.

KNX) and one MS/TP Bus. The number of supported devices on
the third-party trunk depends on the protocol. For the MS/TP
bus, up to 32 devices are supported.

Table 18: NCE25 Ordering Information (Releases 9.0 and 9.0.7 Only)

Product Code
Number

MS-NCE2561-0 9.0 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2566-0 9.0.7 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

MS-NCE2567-0 9.0 Supports two third-party trunks (Modbus RTU or TCP, M-Bus, or

Release Description

KNX) and one MS/TP Bus. The number of supported devices on
the third-party trunk depends on the protocol. For the MS/TP
bus, up to 32 devices are supported. Includes internal modem.

KNX) and one MS/TP Bus. The number of supported devices on
the third-party trunk depends on the protocol. For the MS/TP
bus, up to 32 devices are supported. Includes integral display
screen.

KNX) and one MS/TP Bus. The number of supported devices on
the third-party trunk depends on the protocol. For the MS/TP
bus, up to 32 devices are supported. Includes integral display
screen and internal modem.

Technical specifications

Table 19: NCE25

Power Requirement Dedicated nominal 24 VAC, Class 2 power supply (North America),

SELV power supply (Europe), at 50/60 Hz (20 VAC minimum to 30 VAC
maximum)

Power Consumption 25 VA maximum for NCE25 only

Note: The 25 VA rating does not include any power supplied
by the NCE to devices connected at the NCE BOs. BO devices
connected to and powered by an NCE can require an additional
125 VA (maximum).

Power Source +15 VDC power source terminals provide 100 mA total current; quantity

of inputs: five, located in Universal IN terminals; for active (3-wire) input
devices

Ambient Operating
Conditions

Ambient Storage
Conditions

Data Protection Battery Supports data protection on power failure. Rechargeable NiMH battery:

Processors Supervisory Controller: 192 MHz Renesas SH4 7760 RISC processor

Memory Supervisory Controller: 128 MB flash nonvolatile memory for

0°C to 50°C (32°F to 122°F), 10 to 90% RH, 30°C (86°F) maximum dew
point

-40°C to 70°C (-40°F to 158°F), 5% to 95% RH, 30°C (86°F) maximum dew
point

3.6 VDC 500 mAh, with a typical life of five to seven years at 21°C (70°F);
Product Code Number: MS-BAT1020-0

Field Controller: 20 MHz Renesas H8S2398 processor

operating system, configuration data, and operations data storage and
backup and 128 MB SDRAM for operations data dynamic memory

Field Controller: 1 MB flash memory and 1 MB RAM

35NCE25 Installation Instructions

Table 19: NCE25

Operating System Microsoft® Windows Embedded CE 6.0 (Release 9.0)

Buildroot 2017.08.2 with Linux kernel 14.4 (Release 9.0.7)

Note: The Windows Embedded OS sticker on the bottom of the
network engine permits downgrading the engine to an older
Metasys release that uses a Windows Embedded OS.

Network and Serial
Interfaces

(Depending on the NCE
model.)

• One Ethernet port; 10/100 Mbps; 8-pin RJ-45 connector

• One optically isolated RS-485 SA Bus port; with a pluggable and
keyed 4-position terminal block (on all NCE25 models)

• One optically isolated RS-485 port; with a pluggable and keyed 4­position terminal block (only on NCE25 models that support an N2
Bus or MS/TP bus trunk)

• One LonWorks port; FTT10 78 Kbps; pluggable, keyed 3-position
terminal block (only on NCE25 models that support a LonWorks
Network trunk). The LonWorks models are supported to run the
Metasys Release 9.0 software, but not the Release 9.0.7 update.

• One RS-232-C serial port with a standard 9-pin sub-D connector that
supports standard baud rates

• One USB serial port with a standard USB connector that supports
an optional, user-supplied external modem. Modem functions are
available with Metasys Release 9.0, but are not available after the
NCE is updated with Release 9.0.7.

• Option: One telephone port for the internal modem; up to 56 Kbps;
6-pin modular connector (NCE models with an optional internal
modem have one RS-232-C serial port only; not supported for an
engine with Release 9.0.7).

Analog Input/Analog
Output Point Resolution

• Analog Input Points: 16-bit resolution

• Analog Output Points: 16-bit resolution and ±200 mV accuracy on
0-10 VDC applications

Input/Output
Capabilities

• 10-Universal Inputs: Defined as 0–10 VDC, 4–20 mA, 0–600k ohm, or
Binary Dry Contact

• 8-Binary Inputs: Defined as Dry Contact Maintained or Pulse/
Accumulator Mode

• 4-Analog Outputs: Defined as 0–10 VDC or 4–20 mA

• 7-Binary Outputs: Defined as 24 VAC Triac (selectable internal or
external source power)

• 4-Configurable Outputs: Defined as 0–10 VDC or 24 VAC Triac BO

Dimensions

(Height x Width x Depth)

155 mm x 270 mm x 64 mm (6.1 in. x 10.6 in. x 2.5 in.), minimum
mounting space required: 250 mm x 370 mm x 110 mm (9.8 in. x 14.6
in. x 4.3 in.)

Housing Plastic housing

Plastic material: ABS and polycarbonate

Protection: IP20 (IEC60529)

Mounting On a flat surface with screws, on three mounting clips, or a single 35

mm DIN rail

NCE25 Installation Instructions36

Table 19: NCE25

Shipping Weight 1.2 kg (2.7 lb)

Compliance

The performance specifications are nominal and conform to acceptable industry standard. For
application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson
Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

United States: UL Listed, File E107041, CCN PAZX, UL 916, Energy
Management Equipment; FCC Compliant to CFR47, Part 15, Subpart B,
Class A

Canada: UL Listed, File E107041, CCN PAZX7, CAN/CSA C22.2 No. 205,
Signal Equipment Industry Canada Compliant, ICES-003

Europe: CE Mark - Johnson Controls declares that this product is
in compliance with the essential requirements and other relevant
provisions of the EMC Directive.

Australia and New Zealand: RCM Mark, Australia/NZ Emissions
Compliant

BACnet International: BTL 135-2010 Listed B-BC at Metasys system
Release 8.1

Points of Single Contact

APAC Europe NA/SA

JOHNSON CONTROLS

C/O CONTROLS PRODUCT MANAGEMENT

NO. 32 CHANGJIJANG RD NEW DISTRICT

WUXI JIANGSU PROVINCE 214028

CHINA

JOHNSON CONTROLS

WESTENDHOF 3

45143 ESSEN

GERMANY

JOHNSON CONTROLS

507 E MICHIGAN ST

MILWAUKEE WI 53202

USA

North American Emissions Compliance

United States

This equipment has been tested and found to comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when this equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area may cause harmful
interference, in which case the users will be required to correct the interference at their own
expense.

37NCE25 Installation Instructions

Canada

This Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing
Equipment Regulations.

Cet appareil numérique de la Classe (A) respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.

© 2019 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document
revision and are subject to change without notice.

www.johnsoncontrols.com