Hobart NDP1 Installation Manual

NAFEM GATEWAY

MODEL

NDP1

MODEL NDP1

701 S. RIDGE AVENUE

TROY, OHIO 45374-0001

937-332-3000

www.hobartcorp.com

FORM 35374 (Sept. 2005)

TABLE OF CONTENTS

GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Network Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Physical Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Optimum Physical Location Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Ethernet Gateway Architecture — Possible Configurations . . . . . . . . . . . . . . 6

Ethernet Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Authentication and Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installation & RS485 Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RS485 and MODBus Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Gateway Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LED Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Problem / Suggested Corrective Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Ping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

© HOBART, 2005

Model NDP1

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Installation, Operation and Care of

MODEL NDP1 NAFEM GATEWAY

SAVE THESE INSTRUCTIONS

GENERAL

This manual is intended for the user who is already familiar with the NAFEM protocol and Ethernet
connections. For more information see:

NAFEM DATA PROTOCOL USER MANUAL located at:
http://www.nafem.org/resources/tech/DataProtocol.cfm

The NDP1 is a gateway device that, when used with compatible Hobart equipment, can make the
system NAFEM Data Protocol compliant. The NDP1 performs protocol conversion from MODBus
over RS485 to TCP/IP over Ethernet. You do not have to be a computer expert to understand
what the gateway can do for you and how it is going to be applied.

The first thing you need to know is that a protocol is simply a set of rules that instructs or tells
the computer how it can communicate. It is like a language and the rules of grammar that we use
to talk with each other. Computers talk to each other over wires or through radio waves using
protocols. NAFEM has worked with its members to develop a 'common' protocol for use in
foodservice equipment. Using this protocol, information about the equipment can be shared with
a computer system. Information that may be shared could include HACCP data, asset information
about the equipment, maintenance information and so forth.

Networking is very common in most office environments. The NAFEM Protocol uses networking
concepts that are very typical. If you use the Internet on your computer at home, you are
networking with computers all over the world. You may also use computers in your workplace to
share POS or inventory data.

When your network administrator connects the gateway to the network and adds an application
software package on the computer, you will be able to hook up from one to eight pieces of Hobart
and Traulsen equipment that are NDP (NAFEM Data Protocol) compatible. These pieces of
equipment will send data to a specified computer on site or at a central location. The data
collected will be managed by an application software system installed on the target computer.

The kitchen equipment will run normally and have only a slight difference in the installation.
When adding the Gateway to your facility, a network connection will start at either the target
computer or the router to the Ethernet going to the Gateway. From this point an RS485 cable (like
a telephone cable) will extend from the Gateway to the first piece of equipment. If more than one
piece of equipment is to be connected, a "daisy chain" configuration will connect one unit to the
other. A diagram of this configuration is shown on page 6.

The remainder of this manual gives further details to installing the NAFEM Data Protocol system
in your facility. Your network administrator will be able to complete the installation hookup and
software set-up.

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PRODUCT OVERVIEW

The model NDP1 has three physical connectivity points to the physical world:

• The device’s EIA-485 serial communication port,

• The RJ45 Ethernet network communication port (10BaseT), and

• The power supply jack.

The NAFEM Gateway is a protocol converter that connects Hobart / Traulsen equipment to the
NAFEM protocol using an Ethernet connection. The requirements are set forth by NDP using
digital signal connectivity.

This Gateway device performs these tasks and achieves NAFEM Data Protocol compliance with
the use of six firmware components: Poll Engine, Alarm Module, SNMP v1 Agent, Web Server,
TFTP Client, and a Device Protocol Driver. In addition, a database resides within the gateway that
contains the NAFEM Objects. This is where the information is exchanged between the NAFEM
and MODBus elements.

The function of the gateway is to receive requests for reads and writes of NAFEM Objects. These
objects are the registers within the target equipment. This request comes to the gateway in the
format of the NAFEM protocol. The gateway converts the request into the appropriate format and
communicates with the target equipment. If connected in a daisy chain configuration (page 6),
up to 8 pieces of equipment can be connected to one gateway. The gateway can access up to
80 registers (i.e. 80 different pieces of data) divided between these targets. The information
returned to the gateway from the target equipment is converted into the NAFEM protocol and sent
to the SNMP Manager, the Web browser or the application software.

Network Services

The NDP1 supports DHCP client, staticIP, and autoIP for address assignment. Normally you will
not need to make any changes. Intelligence is employed within the gateway to revert to backup
IP assignment methods if the primary method is unavailable.

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INSTALLATION

PHYSICAL LOCATIONS

There must be no more than 160 feet of RS485 cable within a configuration having one Gateway.
This means that one Gateway with up to 8 machines must have a total of no more than 160 feet
of RS485 cable. A configuration with two Gateways and up to 16 machines total must have no
more than160 feet of RS485 cable in each Gateway cluster for a total of no more than 320 feet
of RS485 cable for the two-Gateway configuration. A power adapter cord with six feet of lead is
provided; 120 volts, 60 hertz, 1 phase grounded outlet is required. Power adapter cord must be
plugged in prior to installation. The Gateway and power cord must be located away from areas
that will be sprayed with water or any other liquids, and any devices that can emit electrical
dsiturbances, such as microwave ovens, radios or other Gateways. The Power Supply must be
installed such that condensate cannot drip down the cord into the 120 volt outlet. The Gateway
and power cord must be located in an area where the ambient temperature is less than 100°F and
where there is minimal risk of condensate. It is recommended that the Gateway be mounted
above the equipment on the upper portion of a wall or above a dropped ceiling. Installation must
be in accordance with all applicable local or national electrical codes.

OPTIMUM PHYSICAL LOCATION CONFIGURATION

If multiple machines will be networked through the same Gateway, a daisy chain connection must
be utilized. Refer to Installation on page 6 for details. One connection cable is provided. If more
than one machine is to be connected, additional cables can be purchased from Hobart (order kit
number 893512). Hobart suggests that the machines for any one Gateway be clustered within
15 feet of the Gateway regardless of the length of cable between the machines and the Gateway.
If the machines are more than 15 feet away from the Gateway, a second Gateway should be used.

NOTE: NAFEM Data Protocol Gateway can be implemented in an Ethernet wireless configuration
such as the 802.11b wireless protocol. Components to install in this manner are supplied by
others. Connections between the target equipment and the Gateway must be hard wired with an
RS485 connection cable.

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