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ProtoNode FPC-N34 and ProtoNode FPC-N35
Start-up Guide
For Interfacing Lochinvar Products:
SYNC™, Knight
®
/Knight XL
®
/Armor/Wall Mount/Wall
Hung, Crest
®
, Copper-Fin II
®
, Power Fin, Knight FTXL,
Power Fin 2.5-5.0, IPW
To Building Automation Systems:
BACnet MS/TP, BACnet/IP, Modbus TCP/IP, Metasys N2
and LonWorks
APPLICABILITY & EFFECTIVITY
Explains ProtoNode hardware and how to install it.
The instructions are effective for the above as of November 2017.
Lochinvar ProtoNode Start-up Guide
Page 2 of 48
Technical Support
Thank you for purchasing the ProtoNode for Lochinvar.
Please call Lochinvar for Technical support of the ProtoNode product.
Sierra Monitor Corporation does not provide direct support. If Lochinvar needs to escalate the concern,
they will contact Sierra Monitor Corporation for assistance.
Support Contact Information:
Lochinvar, LLC
300 Maddox Simpson Pkwy.
Lebanon, TN 37090
Customer Service:
1-800-722-2101
Email: 2tech@lochinvar.com
Website: www.lochinvar.com
Lochinvar ProtoNode Start-up Guide
Page 3 of 48
Quick Start Guide
1. Record the information about the unit. (Section 3.1)
2. Set the device’s COM settings and Node-ID for the device that is to connect to the ProtoNode. (Section
3.2)
3. Select a stored configuration then set the field protocol’s MAC Address, Node-ID and baud rate.
(Section 3.3)
4. Connect the ProtoNode’s 6 pin RS-485 connector to the RS-485 network that is connected to the
device. (Section 4.2)
5. Connect the ProtoNode FPC-N34 3 pin RS-485 port to the field protocol cabling, (Section 4.2.3)
or connect the ProtoNode FPC-N35 2 pin LonWorks port to the field protocol cabling. (Section 4.4)
6. Connect power to the ProtoNode’s 6 pin connector. (Section 4.5)
7. Ethernet network (FPC-N34): Use a web browser to access the ProtoNode Web Configurator page to
change the IP Address. No changes to the configuration file are necessary. (Section 5)
8. LonWorks (FPC-N35): The ProtoNode must be commissioned on the LonWorks network. This must be
done by the LonWorks administrator using a LonWorks commissioning tool. (Section 7)
Lochinvar ProtoNode Start-up Guide
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TABLE OF CONTENTS
1 Certification ...................................................................................................................................... 6
1.1 BTL Mark
®
– BACnet Testing Laboratory .......................................................................................... 6
1.2 LonMark Certification ......................................................................................................................... 6
2 Introduction ...................................................................................................................................... 7
2.1 ProtoNode Gateway ........................................................................................................................... 7
3 Setup for ProtoNode ........................................................................................................................ 8
3.1 Record Identification Data .................................................................................................................. 8
3.2 Configuring Device Communications ................................................................................................. 8
3.2.1 Input COM Settings on the Device Connected to the ProtoNode ............................................. 8
3.2.2 Set Node-ID for the Device Attached to the ProtoNode............................................................ 8
3.3 BMS Network Settings: Selecting Stored Configurations, Setting the MAC Address, Device
Instance and Baud Rate ..................................................................................................................... 9
3.3.1 Selecting Configuration Files for Devices: “S” Bank DIP Switches S0 – S3 ............................. 9
3.3.1.1 FPC-N34 DIP Switch Settings ........................................................................................... 9
3.3.1.2 FPC-N35 DIP Switch Settings ......................................................................................... 10
3.3.2 BACnet MS/TP (FPC-N34): Setting the MAC Address for BMS Network .............................. 11
3.3.3 BACnet (FPC-N34): Setting the Device Instance ................................................................... 12
3.3.4 Metasys N2 or Modbus TCP/IP (FPC-N34): Setting the Node-ID .......................................... 12
3.3.5 BACnet MS/TP (FPC-N34): Setting the Serial Baud Rate for BMS Network ......................... 13
3.3.5.1 Baud Rate DIP Switch Selection ..................................................................................... 13
4 Interfacing ProtoNode to Devices ................................................................................................ 14
4.1 ProtoNode FPC-N34 and FPC-N35 Showing Connection Ports ..................................................... 14
4.2 Device Connections to ProtoNode ................................................................................................... 15
4.2.1 Biasing the Modbus RS-485 Device Network ......................................................................... 16
4.2.2 End of Line Termination Switch for the Modbus RS-485 Device Network.............................. 17
4.2.3 Lochinvar Low Voltage Modbus RTU Wiring to the ProtoNode (Armor, SYNC/Armor X2,
Knight/Knight XL, Crest, Copper-Fin II and FTXL) .............................................................................. 18
4.3 Serial Network (FPC-N34): Wiring Field Port to RS-485 Network ................................................... 19
4.4 LonWorks (FPC-N35): Wiring LonWorks Devices to the LonWorks Terminal ................................. 19
4.5 Power-Up ProtoNode ....................................................................................................................... 20
5 Use the ProtoNode Web Configurator to Setup the Gateway ................................................... 21
5.1 Connect the PC to ProtoNode via the Ethernet Port........................................................................ 21
5.2 Ethernet Network: Setting IP Address for Field Network ................................................................. 22
6 BACnet: Setting Node_Offset to Assign Specific Device Instances ....................................... 24
7 LonWorks (FPC-N35): Commissioning ProtoNode on a Lonworks Network........................... 25
7.1 Commissioning ProtoNode FPC-N35 on a LonWorks Network ....................................................... 25
7.1.1 Instructions to Upload XIF File from ProtoNode FPC-N35 Using Browser ............................. 25
8 BACnet Explorer NG ...................................................................................................................... 27
Appendix A. Troubleshooting .................................................................................................................. 28
Appendix A.1. Lost or Incorrect IP Address ............................................................................................ 28
Appendix A.2. Viewing Diagnostic Information ....................................................................................... 29
Appendix A.3. Checking Wiring and Settings .......................................................................................... 30
Appendix A.4. LED Diagnostics for Communications Between ProtoNode and Devices ....................... 31
Appendix A.5. Taking Diagnostic Capture with the FieldServer Toolbox ................................................ 32
Appendix A.6. Updating Firmware ........................................................................................................... 35
Appendix A.7. Securing ProtoNode with Passwords .............................................................................. 36
Lochinvar ProtoNode Start-up Guide
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Appendix B. Vendor Information - Lochinvar ........................................................................................ 37
Appendix B.1. SYNC Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks ......................... 37
Appendix B.2. Knight/Knight XL/Armor/Wall Mount/Wall Hung Modbus RTU Mappings to BACnet,
Metasys N2 and LonWorks .............................................................................................................. 38
Appendix B.3. Crest Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks .......................... 39
Appendix B.4. Copper-Fin II Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks .............. 40
Appendix B.5. Power Fin Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks ................... 41
Appendix B.6. Knight FTXL Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks ............... 41
Appendix B.7. Power Fin 2.5-5.0 Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks....... 42
Appendix B.8. IPW Modbus RTU Mappings to BACnet, Metasys N2 and LonWorks ............................ 43
Appendix C. “A” Bank DIP Switch Settings ........................................................................................... 44
Appendix C.1. “A” Bank DIP Switch Settings .......................................................................................... 44
Appendix D. Reference ............................................................................................................................. 47
Appendix D.1. Specifications ................................................................................................................... 47
Appendix D.1.1. Compliance with UL Regulations ........................................................................... 47
Appendix E. Limited 2 Year Warranty ..................................................................................................... 48
LIST OF FIGURES
Figure 1: ProtoNode Part Numbers .............................................................................................................. 8
Figure 2: COM Settings ................................................................................................................................. 8
Figure 3: Lochinvar Modbus COM Board Showing Serial DIP Switches ...................................................... 8
Figure 4: S Bank DIP Switches ..................................................................................................................... 9
Figure 5: DIP Switch Locations ..................................................................................................................... 9
Figure 6: MAC Address DIP Switches ........................................................................................................ 11
Figure 7: Baud Rate DIP Switches ............................................................................................................. 13
Figure 8: BMS Baud Rate ........................................................................................................................... 13
Figure 9: ProtoNode FPC-N34 (upper) and ProtoNode FPC-N35 (lower) ................................................. 14
Figure 10: Power and RS-485 Connections ............................................................................................... 15
Figure 11: Modbus RS-485 Biasing Switch on the ProtoNode N34 (left) and ProtoNode N35 (right)........ 16
Figure 12: Modbus RS-485 End-Of-Line Termination Switch on the ProtoNode N34 (left) and ................ 17
Figure 13: Low Voltage Modbus RTU Connection Wiring to the ProtoNode .............................................. 18
Figure 14: Connection from ProtoNode to RS-485 Field Network .............................................................. 19
Figure 15: RS-485 BMS Network EOL Switch ............................................................................................ 19
Figure 16: LonWorks Terminal .................................................................................................................... 19
Figure 17: Required Current Draw for the ProtoNode ................................................................................ 20
Figure 18: Power Connections .................................................................................................................... 20
Figure 19: Web Configuration Screen ......................................................................................................... 22
Figure 20: Changing IP Address via FS-GUI .............................................................................................. 23
Figure 21: Web Configurator Node Offset Field.......................................................................................... 24
Figure 22: LonWorks Service Pin Location ................................................................................................. 25
Figure 23: Sample of Fserver.XIF File Generated ...................................................................................... 26
Figure 24: BACnet Explorer on a BACnet Network .................................................................................... 27
Figure 25: Ethernet Port Location ............................................................................................................... 28
Figure 26: Error Messages Screen ............................................................................................................. 29
Figure 27: Diagnostic LEDs ........................................................................................................................ 31
Figure 28: Ethernet Port Location ............................................................................................................... 32
Figure 29: FS-GUI Passwords Page ........................................................................................................... 36
Figure 30: Password Recovery Page ......................................................................................................... 36
Figure 31: Specifications ............................................................................................................................. 47
Lochinvar ProtoNode Start-up Guide
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1 CERTIFICATION
1.1 BTL Mark
®
1
– BACnet Testing Laboratory
1.2 LonMark Certification
1
BACnet is a registered trademark of ASHRAE
The BTL Mark on ProtoNode is a symbol that indicates that a product has
passed a series of rigorous tests conducted by an independent laboratory
which verifies that the product correctly implements the BACnet features
claimed in the listing. The mark is a symbol of a high-quality BACnet product.
Go to www.BACnetInternational.net/btl/ for more information about the
BACnet Testing Laboratory. Click here for the BACnet PIC Statement.
LonMark International is the recognized authority for certification, education,
and promotion of interoperability standards for the benefit of manufacturers,
integrators and end users. LonMark International has developed extensive
product certification standards and tests to provide the integrator and user
with confidence that products from multiple manufacturers utilizing LonMark
devices work together. Sierra Monitor has more LonMark Certified gateways
than any other gateway manufacturer, including the ProtoCessor,
ProtoCarrier and ProtoNode for OEM applications and the full featured,
configurable gateways.
Lochinvar ProtoNode Start-up Guide
Page 7 of 48
2 INTRODUCTION
2.1 ProtoNode Gateway
The ProtoNode is an external, high performance building automation multi-protocol gateway that has
been preprogrammed for Lochinvar’s products (hereafter called “device”) to various building automation
protocols. These protocols include BACnet
MS/TP, BACnet/IP, Metasys
®
2
N2 by JCI, Modbus TCP/IP, and
LonWorks
®
3
.
It is not necessary to download any configuration files to support the required applications. The ProtoNode
is pre-loaded with tested profiles/configurations for the supported devices.
FPC-N34 Connectivity Diagram:
FPC-N35 Connectivity Diagram:
2
Metasys is a registered trademark of Johnson Controls Inc.
3
LonWorks is a registered trademark of Echelon Corporation
Lochinvar ProtoNode Start-up Guide
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3 SETUP FOR PROTONODE
3.1 Record Identification Data
Each ProtoNode has a unique part number located on the side or the back of the unit. This number should
be recorded, as it may be required for technical support. The numbers are as follows:
Model
Part Number
ProtoNode FPC-N34
FPC-N34-0614
ProtoNode FPC-N35
FPC-N35-0615
Figure 1: ProtoNode Part Numbers
• FPC-N34 units have the following 3 ports: RS-485 + Ethernet + RS-485.
• FPC-N35 units have the following 3 ports: LonWorks + Ethernet + RS-485.
3.2 Configuring Device Communications
3.2.1 Input COM Settings on the Device Connected to the ProtoNode
• The connected serial device MUST have the same baud rate, data bits, stop bits, and parity
settings as the ProtoNode.
• Figure 2 specifies the device port settings required to communicate with the ProtoNode.
Port Setting
Device
Protocol
Modbus RTU
Baud Rate
9600
Parity
None
Data Bits
8
Stop Bits
2
Figure 2: COM Settings
3.2.2 Set Node-ID for the Device Attached to the ProtoNode
• Set the Modbus Node-ID to a value of 1.
Figure 3: Lochinvar Modbus COM Board Showing Serial DIP Switches
Lochinvar ProtoNode Start-up Guide
Page 9 of 48
3.3 BMS Network Settings: Selecting Stored Configurations, Setting the MAC
Address, Device Instance and Baud Rate
3.3.1 Selecting Configuration Files for Devices: “S” Bank DIP Switches S0 – S3
The S bank of DIP switches (S0-S3) are used to select and load a configuration file from a group of
pretested/preloaded configuration files which are stored in the ProtoNode FPC-N34 and the ProtoNode
FPC-N35 (LonWorks).
NOTE: When setting DIP switches, ensure that power to the board is OFF.
3.3.1.1 FPC-N34 DIP Switch Settings
For most BACnet and Modbus TCP/IP profiles, all small ProtoCessor DIP Switches (A1-A8) must be set to
“off”. This is the default position when the ProtoNode is shipped so check the profile chart on the next
page before taking steps to manipulate the ProtoCessor DIP Switches.
NOTE: The lid on top of the ProtoNode must be removed to select the small ProtoCessor DIP
switches (A1-A8). To remove, pull on the lid while holding onto the 6 pin Phoenix connector.
Do not hold the wall mount tabs as these are designed to break off if not required.
• To select configurations using the ProtoCessor DIP Switches, open the ProtoNode and find the
DIP switches on the small ProtoCessor module that sits on top of the ProtoCarrier (Figure 5).
o The ProtoCessor A1 DIP switch is the lowest of the ProtoCessor DIP switches with A8 at the
top, as oriented in Figure 5.
NOTE: The ProtoCessor A2-A8 DIP switches are disabled for this configuration.
ProtoCarrier DIP Switches
ProtoCessor DIP Switches
S0 – S3 DIP
Switches
S Bank DIP Switch Location
Figure 4: S Bank DIP Switches
S0
S1
S2
S3
Off On
Figure 5: DIP Switch Locations
Lochinvar ProtoNode Start-up Guide
Page 10 of 48
The following chart describes the S bank DIP Switch settings for devices to support the listed protocols on
the ProtoNode.
Profiles for ProtoNode FPC-N34
S0
S1
S2
S3
A1
BACnet-Modbus TCP/IP SYNC Deg_C
Off
Off
Off
Off
Off
BACnet-Modbus TCP/IP Knight/Knight XL/Armor/ Wall Mount/Wall Hung Deg_C
On
Off
Off
Off
Off
BACnet-Modbus TCP/IP Crest Deg_C
Off
On
Off
Off
Off
BACnet-Modbus TCP/IP Copper-Fin II Deg_C
On
On
Off
Off
Off
BACnet-Modbus TCP/IP Power Fin Deg_C
Off
Off
On
Off
Off
BACnet-Modbus TCP/IP Knight FTXL Deg_C
On
Off
On
Off
Off
BACnet-Modbus TCP/IP SYNC Deg_F
Off
On
On
Off
Off
BACnet-Modbus TCP/IP Knight/Knight XL/Armor/ Wall Mount/Wall Hung Deg_F
On
On
On
Off
Off
BACnet-Modbus TCP/IP Crest Deg_F
Off
Off
Off
On
Off
BACnet-Modbus TCP/IP Copper-Fin II Deg_F
On
Off
Off
On
Off
BACnet-Modbus TCP/IP Power Fin Deg_F
Off
On
Off
On
Off
BACnet-Modbus TCP/IP Knight FTXL Deg_F
On
On
Off
On
Off
Metasys N2 SYNC Deg_C
Off
Off
On
On
Off
Metasys N2 Knight/Knight XL/Armor/ Wall Mount/Wall Hung Deg_C
On
Off
On
On
Off
Metasys N2 Crest Deg_C
Off
On
On
On
Off
Metasys N2 Copper-Fin II Deg_C
On
On
On
On
Off
Metasys N2 Power Fin Deg_C
Off
Off
Off
Off
On
Metasys N2 Knight FTXL Deg_C
On
Off
Off
Off
On
Metasys N2 SYNC Deg_F
Off
On
Off
Off
On
Metasys N2 Knight/Knight XL/Armor/ Wall Mount/Wall Hung Deg_F
On
On
Off
Off
On
Metasys N2 Crest Deg_F
Off
Off
On
Off
On
Metasys N2 Copper-Fin II Deg_F
On
Off
On
Off
On
Metasys N2 Power Fin Deg_F
Off
On
On
Off
On
Metasys N2 Knight FTXL Deg_F
On
On
On
Off
On
BACnet-Modbus TCP/IP Power Fin 2.5-5.0 Deg_C
Off
Off
Off
On
On
BACnet-Modbus TCP/IP Power Fin 2.5-5.0 Deg_F
On
Off
Off
On
On
Metasys N2 Power Fin 2.5-5.0 Deg_C
Off
On
Off
On
On
Metasys N2 Power Fin 2.5-5.0 Deg_F
On
On
Off
On
On
BACnet-Modbus TCP/IP IPW Deg_C
Off
Off
On
On
On
BACnet-Modbus TCP/IP IPW Deg_F
On
Of
On
On
On
Metasys N2 IPW Deg_C
Off
On
On
On
On
Metasys N2 IPW Deg_F
On
On
On
On
On
NOTE: When setting DIP Switches, ensure that power to the board is OFF.
3.3.1.2 FPC-N35 DIP Switch Settings
The following chart describes the DIP switch settings for devices to support LonWorks on the ProtoNode.
NOTE: For LonWorks, all small ProtoCessor DIP Switches must be set to “off”. This is the default
position when the ProtoNode is shipped.
Profiles for ProtoNode FPC-N35
S Bank DIP Switches
S0
S1
S2
S3
LonWorks SYNC
Off
Off
Off
Off
LonWorks Knight/Knight XL/ Armor/Wall Mount/Wall Hung
On
Off
Off
Off
LonWorks Crest
Off
On
Off
Off
LonWorks Copper-Fin II
On
On
Off
Off
LonWorks Power Fin
Off
Off
On
Off
LonWorks Knight FTXL
On
Off
On
Off
LonWorks Power Fin 2.5-5.0
Off
On
On
Off
LonWorks IPW
On
On
On
Off
NOTE: When setting DIP Switches, ensure that power to the board is OFF.
Lochinvar ProtoNode Start-up Guide
Page 11 of 48
3.3.2 BACnet MS/TP (FPC-N34): Setting the MAC Address for BMS Network
• Set the BACnet MS/TP MAC Address of the ProtoNode to a value between 1 to 127 (MAC
Master Addresses); this is so that the BMS front end can find the ProtoNode via BACnet
Auto-Discovery.
NOTE: Never set a BACnet MS/TP MAC Address from 128 to 255. Addresses from 128 to 255 are
Slave Addresses and cannot be discovered by BMS front ends that support Auto-Discovery of
BACnet MS/TP devices.
• Set DIP switches A0 – A7 to assign MAC Address for BACnet MS/TP for the ProtoNode
FPC-N34.
• Refer to Appendix C.1 for the complete range of MAC Addresses and DIP switch settings.
NOTE: When using Metasys N2 and Modbus TCP/IP, the A Bank of DIP switches are disabled
and not used. They should be set to OFF.
A0
A1
A2
A3
A4
A5
A6
A7
Off On
NOTE: When setting DIP switches, ensure that power to the board is OFF.
Figure 6: MAC Address DIP Switches
Lochinvar ProtoNode Start-up Guide
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3.3.3 BACnet (FPC-N34): Setting the Device Instance
• The A Bank of DIP switches are used for two purposes:
o For BACnet MS/TP, they are used to set the BACnet MS/TP MAC address (Section 3.3.2)
o For both BACnet MS/TP and BACnet/IP, they are also used to determine the BACnet Device
Instance values
• The BACnet Device Instance can range from 1 to 4,194,303.
• The BACnet device instance is calculated by taking the Node_Offset (default is 50,000) found in
Web Configurator (Section 5.2) and adding it to the value of the A Bank DIP switches.
• The formula for calculating the Device Instance is:
Device Instance = Node_Offset + A Bank DIP switch value
For example, if:
o Default Node_Offset value = 50,000
o A Bank DIP switch value = 11
Then the Device Instance value for the device is:
o Device Instance = 50,011
3.3.4 Metasys N2 or Modbus TCP/IP (FPC-N34): Setting the Node-ID
• Set DIP switches A0 – A7 to assign a Node-ID for Metasys N2 or Modbus TCP/IP to the ProtoNode.
• Node-ID’s range from 1-255. Refer to Appendix C.1 for the full range of addresses for setting
Node-ID.
Lochinvar ProtoNode Start-up Guide
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3.3.5 BACnet MS/TP (FPC-N34): Setting the Serial Baud Rate for BMS Network
• DIP switches B0 – B3 are used to set the field baud rate of the ProtoNode to match the baud rate
required by the BMS for BACnet MS/TP.
• The ProtoNode baud rate for Metasys N2 is set for 9600. DIP Switches B0 – B3 are disabled for
Metasys N2 on ProtoNode FPC-N34.
• DIP switches B0 – B3 are disabled on ProtoNode FPC-N35 (FPC-N35 LonWorks).
B0
B1
B2
B3
Off
On
NOTE: When setting DIP switches, ensure that power to the board is OFF.
3.3.5.1 Baud Rate DIP Switch Selection
Baud
B0
B1
B2
B3
9600
On
On
On
Off
19200
Off
Off
Off
On
38400*
On
On
Off
On
57600
Off
Off
On
On
76800
On
Off
On
On
Figure 8: BMS Baud Rate
* Factory default setting = 38400
Figure 7: Baud Rate DIP Switches
Lochinvar ProtoNode Start-up Guide
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4 INTERFACING PROTONODE TO DEVICES
4.1 ProtoNode FPC-N34 and FPC-N35 Showing Connection Ports
Figure 9: ProtoNode FPC-N34 (upper) and ProtoNode FPC-N35 (lower)
Lochinvar ProtoNode Start-up Guide
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4.2 Device Connections to ProtoNode
ProtoNode 6 Pin Phoenix connector:
• The 6 pin Phoenix connector is the same for ProtoNode FPC-N34 (BACnet) and FPC-N35
(LonWorks).
• Pins 1 through 3 are for RS-485 devices.
o Use standard grounding principles for RS-485 GND
• Pins 4 through 6 are for power. Do not connect power (wait until Section 4.5).
Device Pins
ProtoNode Pin
#
Pin
Assignment
Pin RS-485 +
Pin 1
RS-485 +
Pin RS-485 -
Pin 2
RS-485 -
Pin GND
Pin 3
RS-485 GND
Power In (+)
Pin 4
V +
Power In (-)
Pin 5
V -
Frame Ground
Pin 6
FRAME GND
Figure 10: Power and RS-485 Connections
Lochinvar ProtoNode Start-up Guide
Page 16 of 48
4.2.1 Biasing the Modbus RS-485 Device Network
• An RS-485 network with more than one device needs to have biasing to ensure proper
communication. The biasing only needs to be done on one device.
• The ProtoNode has 510 ohm resistors that can be used to set the biasing. The ProtoNode’s default
positions from the factory for the Biasing jumpers are OFF.
• The OFF position is when the 2 RED biasing jumpers straddle the 4 pins closest to the outside of
the board of the ProtoNode. (Figure 11)
• Only turn biasing ON:
o IF the BMS cannot see more than one device connected to the ProtoNode
o AND all the settings (Modbus COM settings, wiring, and DIP switches) have been
checked.
• To turn biasing ON, move the 2 RED biasing jumpers to straddle the 4 pins closest to the inside of
the board of the ProtoNode.
RS-485 Bias
Switch
(off)
Figure 11: Modbus RS-485 Biasing Switch on the ProtoNode N34 (left) and ProtoNode N35 (right)
Lochinvar ProtoNode Start-up Guide
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4.2.2 End of Line Termination Switch for the Modbus RS-485 Device Network
• On long RS-485 cabling runs, the RS-485 trunk must be properly terminated at each end.
• The ProtoNode has an End of Line (EOL) blue jumper. The default setting for this Blue EOL switch
is OFF with the jumper straddling the pins closest to the inside of the board of the ProtoNode.
o On short cabling runs the EOL switch does not to need to be turned ON
• If the ProtoNode is placed at one of the ends of the trunk, set the blue EOL jumper to the ON
position straddling the pins closest to the outside of the board of the ProtoNode.
• Always leave the single Red Jumper in the A position (default factory setting).
Modbus RS-485
EOL Switch
(off)
Leave in Position A
Figure 12: Modbus RS-485 End-Of-Line Termination Switch on the ProtoNode N34 (left) and
ProtoNode N35 (right)
Lochinvar ProtoNode Start-up Guide
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4.2.3 Lochinvar Low Voltage Modbus RTU Wiring to the ProtoNode (Armor,
SYNC/Armor X2, Knight/Knight XL, Crest, Copper-Fin II and FTXL)
• On the Lochinvar’s Modbus terminal strip, connect Pin A (RS-485+) to B+ (RS-485+) on the
ProtoNode’s 6 Pin Phoenix connector.
• On the Lochinvar’s Modbus terminal strip, connect Pin B (RS-485-) to A- (RS-485-) on the
ProtoNode’s 6 pin Phoenix connector.
• The Shield Pin on the terminal strip (which is Ground) does not need to be grounded to the
ProtoNode.
Figure 13: Low Voltage Modbus RTU Connection Wiring to the ProtoNode
Lochinvar ProtoNode Start-up Guide
Page 19 of 48
4.3 Serial Network (FPC-N34): Wiring Field Port to RS-485 Network
• Connect the RS-485 network wires to the 3-pin RS-485 connector on ProtoNode FPC-N34 as
shown below in Figure 14.
o Use standard grounding principles for RS-485 GND
• See Section 5.2 for information on connecting to BACnet/IP network.
BMS RS-
485 Wiring
ProtoNode
Pin #
Pin
Assignment
RS-485 +
Pin 1
RS-485 +
RS-485 -
Pin 2
RS-485 -
-
Pin 3
RS-485 GND
• If the ProtoNode is the last device on the trunk, then the End-Of-Line Termination Switch
needs to be enabled (Figure 15).
o The default setting from the factory is OFF (switch position = right side)
o To enable the EOL Termination, turn the EOL switch ON (switch position = left side)
4.4 LonWorks (FPC-N35): Wiring LonWorks Devices to the LonWorks Terminal
• Wire the LonWorks device network to the ProtoNode LonWorks Terminal.
o Use approved cable per the FT-10 installation guidelines
• LonWorks has no polarity.
Figure 16: LonWorks Terminal
Figure 15: RS-485 BMS Network EOL Switch
End-of-Line Switch
Figure 14: Connection from ProtoNode to RS-485 Field Network
G
-
+
Lochinvar ProtoNode Start-up Guide
Page 20 of 48
4.5 Power-Up ProtoNode
Check power requirements in the table below:
Power Requirement for ProtoNode External Gateway
Current Draw Type
ProtoNode Family
12V DC/AC
24V DC/AC
30V DC
FPC – N34 (Typical)
170mA
100mA
80mA
FPC – N34 (Maximum)
240mA
140mA
100mA
FPC – N35 (Typical)
210mA
130mA
90mA
FPC – N35 (Maximum)
250mA
170mA
110mA
NOTE: These values are ‘nominal’ and a safety margin should be added to the power supply of the host
system. A safety margin of 25% is recommended.
Figure 17: Required Current Draw for the ProtoNode
Apply power to the ProtoNode as shown below in Figure 18. Ensure that the power supply used complies
with the specifications provided in Appendix D.1.
• ProtoNode accepts either 9-30V DC or 12-24V AC on pins 4 and 5.
• Frame GND should be connected.
Power to
ProtoNode
ProtoNode
Pin #
Pin
Assignment
Power In (+)
Pin 4
V +
Power In (-)
Pin 5
V -
Frame Ground
Pin 6
FRAME GND
Figure 18: Power Connections
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