LAARS Gateway LER User Manual
LAARS Gateway Startup Guide
Explains the Gateway RER and LER hardware and how to install it.
Document 4236BThe LAARS Gateway Startup Guide
H2355100A
H2355100A
The LAARS Gateway RER and Gateway LER.
Startup Guide for customer product automation systems
that use the following protocols:
BACnet MSTP, BACnet IP, Modbus TCP,
Metasys N2 by JCI, and LonWorks
to interface with:
LAARS Mascot II, NeoTherm,
NeoTherm LC Boilers and Water Heaters.
APPLICABILITY & EFFECTIVITY
H2354400B
The instructions are effective for the above as of September 2012
800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)
20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering)
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
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LAARS Heating Systems
THIS PAGE INTENTIONALLY LEFT BLANK
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
The LAARS Gateway LER and RER Startup Guide
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TABLE OF CONTENTS
1 Introduction ................................................................................................................................................... 5
1.1 BTL Mark – BACnet Testing Laboratory ......................................................................................................... 5
1.2 LonMark Certification .................................................................................................................................... 5
2 Bacnet/LonWorks Setup through Protocessor Gateway RER/LER .................................................................. 6
2.1 Installation steps for the customer................................................................................................................ 6
2.2 Record Identification Data ............................................................................................................................. 6
2.3 Configure the DIP Switches ........................................................................................................................... 6
2.3.1 Setting the Node/ID Device Instance (DIP Switch A0 – A7) for BACnet MS/TP, BACnet/IP, & Metasys N2 ..... 6
2.3.2 Setting the Serial Baud Rate (DIP Switch B0 – B3) for BACnet MS/TP & Metasys N2 .............................. 7
2.3.2.1 Baud Rate DIP Switch Selection ...................................................................................................... 7
2.3.3 Using S0 – S3 bank of DIP Switches to select and load Configuration Files ............................................. 7
2.3.3.1 S0 – S3 DIP Switch Configuration Settings ...................................................................................... 7
A. BACnet MS/TP, BACnet/IP and N2 for the Mascot II, NeoTherm, and NeoTherm LC ....... 7
B. LonWorks for the Mascot II, NeoTherm, and NeoTherm LC ................................................... 8
3 Interfacing the Gateway to Mascot II, NeoTherm, and NeoTherm LC ............................................................. 9
3.1 Gateway RER and LER showing connection ports ......................................................................................... 9
3.2 Wiring Connections to Gateway RER and LER ............................................................................................. 10
3.2.1 Sola wiring to the Gateway using Display .............................................................................................. 10
3.3 Wiring the Gateway RER to RS-485 BACnet MS/TP or Metasys N2 Field Protocol ..................................... 11
3.4 Wiring the Gateway LER Field Port to a LonWorks network ....................................................................... 12
3.5 Power-Up the Gateway RER or LER ............................................................................................................. 12
3.6 Commissioning the Gateway-LER on a LonWorks network ......................................................................... 12
4 Connect to Gateway’s Web GUI to Setup ip Address for BACnet/IP and modbus TCP .................................. 13
4.1 Connect the PC to the Gateway via the Ethernet port ................................................................................ 13
4.2 Use the Gateway Web GUI to Connect to the Gateway .............................................................................. 14
4.3 Set IP Address for BACnet/IP or Modbus TCP ............................................................................................. 14
Appendix A. Troubleshooting Tips if the Unit is Not Working .............................................................................. 16
Appendix A.1. Check Wiring and Settings ................................................................................................................ 16
Appendix A.2. Take Log With Our FieldServer Utilities............................................................................................ 16
Appendix A.3. Instructions to upload XIF file from the Gateway LER using RUINET ............................................. 19
Appendix A.4. LED Diagnostics for Modbus RTU Communications between the Gateway and the LAARS Boilers
................................................................................................................................................................................. 20
A.3.1 Gateway RER LEDs ..................................................................................................................................... 20
A.3.2 Gateway LER Main Board LEDs ................................................................................................................. 21
Appendix B. Vendor Information ......................................................................................................................... 22
Appendix B.1. Default Modbus COM Settings for Mascot II, NeoTherm, and NeoTherm LC .................................. 22
Appendix B.2. Gateway RER: DIP switch settings for Mascot II BACnet MSTP/IP or Mascot II, NeoTherm, and
NeoTherm LC to support 1 through 8 boilers to Modbus TCP ................................................................................ 22
Appendix B.3. Mascot II, NeoTherm, and NeoTherm LC Modbus RTU Mappings to BACnet MS/TP, BACnet IP,
Metasys, and LonWorks ......................................................................................................................................... 23
Appendix C. Reference ......................................................................................................................................... 25
Appendix C.1. Specifications .................................................................................................................................... 25
Appendix C.1.1. Compliance with UL Regulations ............................................................................................ 25
Appendix C.2. Address DIP Switch Settings ............................................................................................................. 26
Appendix D. Limited 2 year Warranty .................................................................................................................. 32
LIST OF FIGURES
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Figure 1: A0 – A7 DIP Switches ...................................................................................................................................... 6
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
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LAARS Heating Systems
Figure 2: B0 – B3 DIP Switches ...................................................................................................................................... 7
Figure 3: S0 – S3 DIP Switches ....................................................................................................................................... 7
Figure 4: Gateway RER (left) and Gateway LER (right) .................................................................................................. 9
Figure 5: Connection from Gateway to RS-485 Field Protocol –BACnet MS/TP or Metasys N2 ................................. 11
Figure 6: End-of-line termination on from Gateway to RS-485 Field Protocol – BACnet MS/TP or Metasys N2. ....... 11
Figure 7: Ethernet port location of Gateway ............................................................................................................... 13
Figure 8: FST Web GUI screen ..................................................................................................................................... 14
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
The LAARS Gateway LER and RER Startup Guide
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The BTL Mark on the Gateway RER is a symbol that indicates that a product has
quality BACnet product. Go to
for more information about the BACnet
LonMark International is the recognized authority for certification, education, and
1 INTRODUCTION
The LAARS Gateway is an external, high performance Building Automation multi-protocol gateway that has been
preprogrammed for LAARS’ Mascot II, NeoTherm, and NeoTherm LC to support BACnet®
2
Metasys®
N2 by JCI, Modbus TCP, and LonWorks®3. Configurations for the various protocols are stored within the
Gateway and are selectable via DIP switches for fast and easy installation. It is not necessary to download any
configuration files to support the required applications.
This document provides the necessary information to facilitate installation of the Gateway.
1.1 BTL Mark – BACnet Testing Laboratory
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-
http://www.bacnetinternational.net/btl/
Testing Laboratory.
1
MS/TP, BACnet/IP,
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1.2 LonMark Certification
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
1
BACnet is a registered trademark of ASHRAE
2
Metasys is a registered trademark of Johnson Controls Inc.
3
LonMark is a registered trademark of LonMark International
4
LonWorks is a registered trademark of Echelon Corporation
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
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LAARS Heating Systems
2 BACNET/LONWORKS SETUP THROUGH PROTOCESSOR GATEWAY RER/LER
2.1 Installation steps for the customer
1. Record the information about the unit. (See Section 2.2)
2. Configure each Mascot II, NeoTherm, and NeoTherm LC Modbus node address for each LAARS controller
connected to the Gateway. The first node must start at 1 and go up to 8; if you have a total of 8 LAARS
boilers controls connected to the Gateway. (See Appendix B.1 Note that NeoTherm LC units each have
two controllers.)
3. Set device addressing: MAC Address and Device Instance/Node-ID for BACnet MS/TP, BACnet/IP, Metasys
N2, and Modbus TCP. (See section 2.3)
4. Connect the Gateway to the Field protocol port and Honeywell’s Display (RS-485 gateway port) to the
Gateway’s RS-485 interface. (See Section 3)
5. Power up the Gateway RER and LER.
6. If the Controls Contractor requires LonWorks Fserver.xif file for the Gateway LER, see Appendix A.3 to
generate the file.
7. If the Field protocol is BACnet/IP or Modbus TCP, refer to Section 4 to run the Gateway web GUI to
change IP address or the RUINET utility program to change the IP address (Section 4).
2.2 Record Identification Data
Each Gateway has a unique part number located on the underside of the unit. The numbers are as follows:
FieldServer # FPC-N34-103-122-0701 Modbus RTU to BACnet MSTP, BACnet IP, N2, Modbus TCP,
RER, Metasys N2 by JCI.
FieldServer # FPC-N35-103-401-0702 Modbus RTU to LonWorks, LER.
This number should be recorded, as it may be required for technical support.
2.3 Configure the DIP Switches
2.3.1 Setting the Node/ID Device Instance (DIP Switch A0 – A7) for BACnet MS/TP,
BACnet/IP, & Metasys N2
The A Bank DIP switches on the Gateway RER allow users to set the Node-ID/Device Instance on the Field
RS-485.
DIP switches A0 – A7 can also be used to set the MAC Address for BACnet MS/TP and BACnet/IP.
Figure 1: A0 – A7 DIP Switches
Please refer to Appendix C.2 for the full range of addresses to set Node-ID/Device Instance.
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
The LAARS Gateway LER and RER Startup Guide
LAARS Gateway Startup Guide Page 7 of 32
B0 B1 B2 B3
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
S0 S1 S2 S3
S Bank DIP Switches
NOTE: When setting DIP Switches, please ensure that power to the board is OFF.
2.3.2 Setting the Serial Baud Rate (DIP Switch B0 – B3) for BACnet MS/TP & Metasys N2
DIP Switches B0 – B3 can be used to set the serial baud rate to match the baud rate provided by the
Building Management System for BACnet MS/TP.
Metasys N2 is always defaulted to 9600 baud and the B bank is disabled.
Figure 2: B0 – B3 DIP Switches
2.3.2.1 Baud Rate DIP Switch Selection
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2.3.3 Using S0 – S3 bank of DIP Switches to select and load Configuration Files
The S bank of DIP switches, S0 - S3 is used to select and load a configuration file from a group of
pretested/preloaded configuration files which are stored in the Gateway RER (BACnet MS/TP, BACnet/IP
and Metasys N2) and LER (LonWorks).
Figure 3: S0 – S3 DIP Switches
2.3.3.1 S0 – S3 DIP Switch Configuration Settings
H2355100A
A. BACnet MS/TP, BACnet/IP and N2 for the Mascot II, NeoTherm, and NeoTherm LC
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
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Gateway LER
Gateway S Bank DIP Switches
Profile - FPC-N35
S0
S1
S2
S3
LonWorks Sola 1
Off
Off
Off
Off
LonWorks Sola 2
On
Off
Off
Off
LonWorks Sola 3
Off
On
Off
Off
LonWorks Sola 4
On
On
Off
Off
LonWorks Sola 5
Off
Off
On
Off
LonWorks Sola 6
On
Off
On
Off
LonWorks Sola 7
Off
On
On
Off
LonWorks Sola 8
On
On
On
Off
Gateway RER
Gateway S Bank DIP Switches
Profile – FPC-N34
S0
S1
S2
S3
BACnet IP/BACnet MSTP Sola 1
Off
Off
Off
Off
BACnet IP/BACnet MSTP Sola 2
On
Off
Off
Off
BACnet IP/BACnet MSTP Sola 3
Off
On
Off
Off
BACnet IP/BACnet MSTP Sola 4
On
On
Off
Off
BACnet IP/BACnet MSTP Sola 5
Off
Off
On
Off
BACnet IP/BACnet MSTP Sola 6
On
Off
On
Off
BACnet IP/BACnet MSTP Sola 7
Off
On
On
Off
BACnet IP/BACnet MSTP Sola 8
On
On
On
Off
Metasys N2 Sola 1
Off
Off
Off
On
Metasys N2 Sola 2
On
Off
Off
On
Metasys N2 Sola 3
Off
On
Off
On
Metasys N2 Sola 4
On
On
Off
On
Metasys N2 Sola 5
Off
Off
On
On
Metasys N2 Sola 6
On
Off
On
On
Metasys N2 Sola 7
Off
On
On
On
Metasys N2 Sola 8
On
On
On
On
LAARS Heating Systems
The Following chart describes S0 – S3 DIP Switch configuration settings for the Mascot II, NeoTherm, and
NeoTherm LC boilers – 1 through 8 units to support BACnet MSTP/IP and Metasys N2 on a Gateway RER. The
Mascot II, NeoTherm, and NeoTherm LC boilers all use the same configuration points list.
See Appendix B.2 for additional configuration DIP switch settings:
For the Mascot II, NeoTherm, and NeoTherm LC boilers to support Modbus TCP on the Gateway RER
B. LonWorks for the Mascot II, NeoTherm, and NeoTherm LC
The following chart describes S0 – S3 DIP Switch configuration settings for Mascot II, NeoTherm, and NeoTherm LC
boilers to support LonWorks on a Gateway LER. The Mascot II, NeoTherm, and NeoTherm LC units all use the same
configuration points list.
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
The LAARS Gateway LER and RER Startup Guide
LAARS Gateway Startup Guide Page 9 of 32
LAARS Gateway Startup Guide Page 9 of 32
3 INTERFACING THE GATEWAY TO MASCOT II, NEOTHERM, AND NEOTHERM LC BOILERS
3.1 Gateway RER and LER showing connection ports
RS-485 Port for BACnet
MS/TP, and N2
10/100
BaseT for
BACnet IP and Modbus TCP
Power +/- and FG 9-30 VDC
12-24 VAC
RS-485 Port for connection
to the Mascot II, NT 80 –
850, and NT 1000 boilers
LonWorks Port
LonWork Service Pin
RS-485 Port for
connection to the
Mascot II, NT 80 – 850,
and NT 1000 boilers
Power +/- and FG 9-30
VDC
12-24 VAC
3 INTERFACING THE GATEWAY TO MASCOT II, NEOTHERM, AND NEOTHERM LC BOILERS
3.1 Gateway RER and LER showing connection ports
Page 9
to the Mascot II, NeoTherm,
and NeoTherm LC
H2355100A
Mascot II, NeoTherm,
and NeoTherm LC
Figure 4: Gateway RER (left) and Gateway LER (right)
H2355100A
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
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LAARS Heating Systems
3.2 Wiring Connections to Gateway RER and LER
Gateway 6 Pin Phoenix connector – Pinouts
3.2.1 Sola wiring to the Gateway using Display
On the System Operator Display, connect terminal Y4 (RS-485+) to Pin 1 - RS 485+ on the Gateway’s 6 pin
Phoenix connector.
Connect terminal Y5 (RS-485) to Pin 2 - RS 485- on the Gateway’s 6 pin on the Gateway’s Phoenix
connector.
Y6 (Ground) does not need to be grounded to the Gateway.
LAARS Heating Systems Company, 20 Industrial Way, Rochester, NH 03867 USA
Web: www.laars.com Toll Free: (800) 900-9276
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