AMCI NXEE2 User manual

MICRO CONTROLS INC.
ADVANCED
U
s
e
r
M
a
n
u
a
l
NXEE2
mini-NEXUS
SSI Interface Module
with Integral 2-Port Ethernet Switch
Device Level Ring functionality for EtherNet/IP
Media Redundancy Protocol for PROFINET
Manual #: 940-0N110
E2 Technology

ADVANCED MICRO CONTROLS INC.
GENERAL INFORMATION
Important User Information
The products and application data described in this manual are useful in a wide variety of different applica-
tions. Therefore, the user and others responsible for applying these products described herein are responsible
for determining the acceptability for each application. While efforts have been made to provide accurate infor-
mation within this manual, AMCI assumes no responsibility for the application or the completeness of the
information contained herein.
UNDER NO CIRCUMSTANCES WILL ADVANCED MICRO CONTROLS, INC. BE RESPONSIBLE OR
LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING INDIRECT OR CONSEQUENTIAL DAM-
AGES OR LOSSES, ARISING FROM THE USE OF ANY INFORMATION CONTAINED WITHIN THIS
MANUAL, OR THE USE OF ANY PRODUCTS OR SERVICES REFERENCED HEREIN.
No patent liability is assumed by AMCI, with respect to use of information, circuits, equipment, or software
described in this manual.
The information contained within this manual is subject to change without notice.
This manual is copyright 2021 by Advanced Micro Controls Inc. You may reproduce this manual, in whole or
in part, for your personal use, provided that this copyright notice is included. You may distribute copies of this
complete manual in electronic format provided that they are unaltered from the version posted by Advanced
Micro Controls Inc. on our official website: www.amci.com. You may incorporate portions of this documents
in other literature for your own personal use provided that you include the notice “Portions of this document
copyright 2021 by Advanced Micro Controls Inc.” You may not alter the contents of this document or charge a
fee for reproducing or distributing it.
Standard Warranty
ADVANCED MICRO CONTROLS, INC. warrants that all equipment manufactured by it will be free from
defects, under normal use, in materials and workmanship for a period of [18] months. Within this warranty
period, AMCI shall, at its option, repair or replace, free of charge, any equipment covered by this warranty
which is returned, shipping charges prepaid, within eighteen months from date of invoice, and which upon
examination proves to be defective in material or workmanship and not caused by accident, misuse, neglect,
alteration, improper installation or improper testing.
The provisions of the "STANDARD WARRANTY" are the sole obligations of AMCI and excludes all other
warranties expressed or implied. In no event shall AMCI be liable for incidental or consequential damages or
for delay in performance of this warranty.
Returns Policy
All equipment being returned to AMCI for repair or replacement, regardless of warranty status, must have a
Return Merchandise Authorization number issued by AMCI. Call [phone] with the model number and
serial number (if applicable) along with a description of the problem during regular business hours, Monday
through Friday, 8AM - 5PM Eastern. An "RMA" number will be issued. Equipment must be shipped to AMCI
with transportation charges prepaid. Title and risk of loss or damage remains with the customer until shipment
is received by AMCI.
24 Hour Technical Support Number
24 Hour technical support is available on this product. If you have internet access, start at www.amci.com.
Product documentation and FAQ’s are available on the site that answer most common questions.
If you require additional technical support, call [phone]. Your call will be answered by the factory dur-
ing regular business hours, Monday through Friday, 8AM - 5PM Eastern. During non-business hours an auto-
mated system will ask you to enter the telephone number you can be reached at. Please remember to include
your area code. The system will page an engineer on call. Please have your product model number and a
description of the problem ready before you call.
Waste Electrical and Electronic Equipment (WEEE)
At the end of life, this equipment should be collected separately from any unsorted municipal waste.

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TABLE OF CONTENTS
GENERAL INFORMATION
Important User Information ..................... 2
Standard Warranty ................................... 2
Returns Policy .......................................... 2
24 Hour Technical Support Number ........ 2
WEEE Statement ..................................... 2
About this Manual
Audience .................................................. 5
Trademark Notices ................................... 5
Revision Record ....................................... 5
Revision History ............................ 5
Navigating this Manual ............................ 5
Manual Conventions ................................ 5
Where To Go From Here ......................... 6
Reference: Introduction to the
NXEE2
The NXEE2 .............................................. 7
SSI protocol ............................................. 8
NXEE2 Programmable Parameters ......... 9
Data Setup Parameters ................... 10
Channel Setup Parameters ............. 12
Programming Cycle ................................. 13
Status LED’s ............................................ 14
Module Status (MS) LED .............. 14
Network Status (NS) LED ............. 14
Power Connectors .................................... 15
NXEE2 Power ............................... 15
Sensor Power ................................. 15
Ethernet Connectors ................................. 15
I/O Connector .......................................... 15
Specifications ........................................... 16
................................................................. 16
Reference: Data Formats
Network Output Data ............................... 17
Command Word Format ................ 17
Configuration Word Format .......... 18
Error Response ......................................... 19
Network Input Data .................................. 20
Status Word Format ...................... 20
Reference: Configuring Network 
Interfaces
Firewall Settings ....................................... 23
Disable All Unused Network Interfaces .. 23
Configure Your Network Interface .......... 23
Test Your Network Interface ................... 24
Task 1: Installing the NXEE2
Safe Handling Guidelines ........................ 25
Prevent Electrostatic Damage ....... 25
Prevent Debris From 
Entering the Module ................... 25
Remove Power Before Servicing .. 25
Mounting .................................................. 25
DIN Rail Installation ..................... 25
Dimensions ................................... 26
Mounting the NXEE2 Module ...... 26
Power Wiring ........................................... 27
Network Connections ............................... 27
EtherNet/IP DLR Applications ..... 27
PROFINET MRP Applications .... 27
I/O Connector Pin Out ............................. 28
SSI Transducer Wiring ............................. 28
AMCI DC25 SSI 
DuraCoder Wiring ...................... 29
Extending the Sensor Cable .......... 29
Avoiding Ground Loops ............... 30
Powering the SSI Sensor .......................... 30
Actual SSI Data is all 1’s .............. 30
Input Wiring ............................................. 31
Cable Shields ................................ 31
Task 2: Set the IP Address and 
Protocol
Determine the Best Method for 
Setting the IP Address ............................ 33
Use Factory Default Settings ................... 33
Use the Embedded Web Server ................ 34
Use the AMCI NET 
Configurator Utility ................................ 36

Table of Contents
ADVANCED MICRO CONTROLS INC.
4
EtherNet/IP Task: 
Implicit Communications
with an EDS
Obtain the EDS file .................................. 43
Install the EDS file ................................... 43
Start the EDS Hardware 
Installation Tool .......................... 43
Install the EDS File ....................... 44
Host System Configuration ...................... 46
Add the NXEE2 to Your Project .............. 46
NXEE2 Properties .................................... 47
General Tab ................................... 47
Connection Tab ............................. 47
Configuration Tab ......................... 48
Buffering the Input Data .......................... 48
EtherNet/IP Task: 
Implicit Communications 
Without an EDS
Host System Configuration ...................... 49
Add the NXEE2 ....................................... 49
Check for Communication Errors ............ 52
Configure the NXEE2 .............................. 52
Buffer I/O Data ......................................... 53
EtherNet/IP Task: EtherNet/IP 
Explicit Messaging
Required Message Instructions ................ 55
Create Four New Data Files. .................... 55
Add the Message Instructions 
to your Ladder Logic .............................. 56
Troubleshooting ....................................... 59
Modbus Task: Modbus TCP 
Configuration
Enable Modbus TCP Protocol .................. 61
Modbus Addressing .................................. 61
Modbus Table Mapping ................ 61
Host Addressing ............................ 61
AMCI Modbus TCP Memory Layout ...... 62
Supported Number of Connections .......... 62
Supported Modbus Functions ................... 63
Supported Modbus Exceptions ................. 63
PROFINET Task: PROFINET Network
Configuration
Basic Steps ................................................ 65
Download the GSDML files ..................... 65
GSDML File Installation .......................... 65
Configure the PROFINET Network ......... 65
Add the NXEE2 to the PROFINET 
Network .................................................. 66
Configure the NXEE2 .............................. 68
Set the I/O Configuration ......................... 69
Set the NXEE2 Device Name ................... 70
Verify and Download the New 
Configuration .......................................... 70
MRP Installations ..................................... 71
Configure the NXEE2 as an MRC ........... 71

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ABOUT THIS MANUAL
Audience
This manual explains the set-up, installation, and operation of AMCI’s NXEE2 SSI Interface Module. It is
written for the engineer responsible for incorporating these modules into a design, as well as the engineer or
technician responsible for their actual installation.
Trademark Notices
The AMCI logo is a trademark of Advanced Micro Controls Inc. “CIP” is a trademark of Open DeviceNet
Vendor Association, Inc. “EtherNet/IP” is a trademark of ControlNet International, Ltd. under license by
Open DeviceNet Vendor Association, Inc. “PROFINET” is a registered trademark of PROFIBUS & PROFI-
NET International (PI). “Adobe” and “Acrobat” are registered trademarks of Adobe Systems Incorporated.
All other trademarks contained herein are the property of their respective holders.
Revision Record
This manual, 940-0N110, is the first release of this manual. It was released May 14th, 2021.
Revision History
940-0N110 May14, 2021: Initial release.
Navigating this Manual
This manual is designed to be used in both printed and on-line formats. Its on-line form is a PDF document,
which requires Adobe Acrobat Reader version 7.0+ to open it. The manual is laid out with an even number of
pages in each chapter. This makes it easier to print a chapter to a duplex (double sided) printer.
The PDF file is password protected to prevent changes to the document. You are allowed to select and copy
sections for use in other documents and, if you own Adobe Acrobat version 7.0 or later, you are allowed to
add notes and annotations.
Manual Conventions
Three icons are used to highlight important information in the manual:
NOTES highlight important concepts, decisions you must make, or the implications of those
decisions.
CAUTIONS tell you when equipment may be damaged if the procedure is not followed
properly.
WARNINGS tell you when people may be hurt or equipment may be damaged if the pro-
cedure is not followed properly.
Read this chapter to learn how to navigate through this manual and familiarize
yourself with the conventions used in it. The last section of this chapter highlights
the manual’s remaining chapters and their target audiences.

ABOUT THIS MANUAL NXEE2 User Manual
ADVANCED MICRO CONTROLS INC.
6
Manual Conventions (continued)
The following table shows the text formatting conventions:
Where To Go From Here
You will most likely read this manual for one of two reasons:
If you are curious about the NXEE2 SSI Interface Module from AMCI, this manual contains the infor-
mation you need to determine if these product is the right one for your application. The first chapter,
Introduction to the NXEE2, contains all of the information you will need to fully specify the right
product for your application.
If you need to install and use the NXEE2 SSI Interface Module, then the rest of the manual is written for
you. To simplify installation and configuration, the rest of the manual is broken down into references
and tasks. Using this product requires you to complete multiple tasks, and the manual is broken down
into sections that explain how to complete each one.
Format Description
Normal Font Font used throughout this manual.
Emphasis Font Font used the first time a new term is introduced.
Cross Reference When viewing the PDF version of the manual, clicking on
the cross reference text jumps you to referenced section.
HTML Link When viewing the PDF version of the manual, clicking on
the link will connect you with the www.amci.com website.
Chapter Title Page # Intended Audience
Introduction to the
NXEE2 7Anyone new to the NXEE2. This chapter gives a basic overview of
the features available on the unit, typical applications, and specifi-
cations.
Data Formats 17 Anyone that needs detailed information on the data formats used by
the NXEE2 to communicate with its host controller.
Configuring Network
Interfaces 23 Basic information on configuring a PC or laptop to successfully
communicate with an NXEE2 to set its IP address.
Installing the
NXEE2 25 Anyone that must install an NXEE2 on a machine. Includes infor- mation on mounting, grounding, and wiring specific to the units.
Set the IP Address
and Protocol 33 Anyone that needs to change the IP address or communications  protocol used by the NXEE2.
Implicit
Communicationswith
an EDS 43 Anyone that wants to use EtherNet/IP Implicit Messaging on 
platforms that support EDS files.
Implicit
Communications
Without an EDS 49 Anyone that wants to use EtherNet/IP Implicit Messaging on 
platforms that do not support EDS files.
EtherNet/IP Explicit
Messaging 55 Anyone using EtherNet/IP Explicit Messaging to communicate
with the NXEE2.
Modbus TCP
Configuration 61 Anyone using Modbus TCP to communicate with the NXEE2.
PROFINET Network
Configuration 65 Anyone using PROFINET to communicate with the NXEE2.

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REFERENCE 1
INTRODUCTION TO THE NXEE2
The NXEE2
The NXEE2 is a two channel SSI interface module that accepts 24 to 48 Vdc as its power source. Synchro-
nous Serial Interface (SSI) is an industry standard serial protocol for transmitting sensor data. The SSI proto-
col is most commonly used in rotary and linear distance sensors, but any type of data can be transmitted using
the protocol.
The NXEE2 is a two channel SSI interface module that allows you to lower transducer wiring cost by placing
the NXEE2 close to the transducers and running a single network cable back to the host controller. The
NXEE2 also future-proofs your SSI feedback design. The host controller can be updated to any future plat-
form that supports EtherNet/IP, PROFINET, or Modbus TCP and the NXEE2 will operate with the new sys-
tem.
E2 Technology
The NXEE2 is a member of the growing line of products from AMCI that incorporate our E2 Technology. E2
Technology by AMCI is an innovative new multi-protocol approach to Ethernet distributed I/O.
E2 Technology products are simple and intuitive, allowing easy transition between Ethernet/IP, PROFINET,
or Modbus/TCP protocols without the need to physically switch parts. An advanced web server integrated
into all AMCI E2 Technology devices facilitates simple network configuration and troubleshooting via a
web-browser. Furthermore, an impressive array of advanced features for each supported protocol has been
incorporated into the devices to meet many unique application requirements.
Each unit has two Ethernet ports which are internally connected through an onboard, two port, 10/100 Mbps
ethernet switch. These ports allow you to wire your network in a “daisy-chain” fashion, which may lower net-
work wiring costs and complexities.
The two ports also allow the units to function as members of a redundant Device Level Ring (DLR) network
when using the EtherNet/IP protocol or as clients in a Media Redundancy Protocol (MRP) network when
using PROFINET.
In DLR environments, the units act as Beacon-Based Ring Nodes. All units can process beacon packets at the
default rate of every 400 microseconds. Beacon-based nodes can respond faster to network changes than
nodes that only process Announce packets.
SSI Sensor Interface
The NXEE2 contains several parameters that allows the module to interface with any SSI sensor on the mar-
ket today and extract the data value from it. A total of four values are available. These four values are:
Data Value (Typically a position value.)
Rate of Change (The velocity value when the Data Value represents a position.)
Actual SSI Value (The data stream read from the SSI sensor. This stream will include any available 
status bits.)
Captured Data Value (Captures and reports the Data Value when an input makes a transition. The
NXEE2 sets a status bit to signal that a new value is available. This bit must be reset by a write to the
NXEE2 from the host controller before another capture can occur.)
Any two of these values can be reported to the host controller at a time. The two that are reported is program-
mable from the host controller.
Each channel has a dedicated DC input. As mentioned above, the input can be programmed to capture the
Data Value on a transition. The input can also be programmed for a different function. The input can be pro-
grammed to preset the Data Value on a transition. The Preset Value is programmable from the host controller.
This reference section contains the information you need to decide if the NXEE2
SSI Interface Module is the right product for your application.

INTRODUCTION TO THE NXEE2 NXEE2 User Manual
ADVANCED MICRO CONTROLS INC.
8
The NXEE2 (continued)
SSI Sensor Interface
Communication is performed through input registers and output registers assigned to the module. The
NXEE2 can be completely configured from your host controller. This allows you to:
Configure the NXEE2 to work with all popular SSI sensors.
Scale the Data Value to engineering units.
Read status bits from the SSI sensor.
Preset the Data Value when aligning the machine.
Copy setup data from one machine to another
Design custom HMI interfaces for configuration and alignment that can simplify machine training,
startup, and repair.
SSI protocol
The original SSI protocol specification defined a twenty-five bit serial data stream from the sensor that is syn-
chronized to clock pulses generated by a controller such as the NXEE2. The protocol defines minimum and
maximum clock frequencies. (The sensor cable dictates the maximum allowable frequency for each applica-
tion.) In addition to the clock frequency, the SSI protocol specifies signal timing and electrical characteristics.
However, the protocol does not specify the content, or format, of the data bits.
Since its introduction, several companies have chosen not to follow the twenty-five bit convention of the SSI
protocol. For example, single turn rotary encoders typically use a thirteen bit transfer. Figure R1.1 below
shows a typical SSI data transfer.
Figure R1.1 SSI Transfer
Sensor data is latched on the first falling clock edge.
The most significant data bit is shifted out on first rising edge. Subsequent rising clock edges shift out the
rest of the data.
TINT is the total interogation time for the sensor. It is equal to t* N+ 0.5twhere t= 1/(SSI clock fre-
quency) and Nequals the number of data bits in the SSI stream.
TMis the time that the last bit is valid, which is determined by the sensor. It is typically 12 to 20 microsec-
onds. It must be at least 5 microseconds to be compatible with the NXEE2. Also note that the diagram
shows the last bit as data. The original SSI protocol specification defined this bit as a stop bit which is
always low. AMCI is aware of several manufacturers that are using this bit position for data, so the NXEE2
treats it as such.
TIDL is the time between interogations and is controlled by the NXEE2. The NXEE2 guarentees a mini-
mum of 800 microseconds between interogations. Your SSI sensor must have new data available within
this time.
Multi-word transfers are accomplished by holding the clock signal low for the TMtime period
and restarting the clock. This signals the transducer to transfer additional bits of data instead of
restarting at bit 1. Because multi-word transfers are rarely used in applications, the NXEE2
does not support this protocol.
Bit 1
123 N-2N-1N
MSB LS
B
Bit 1
Bit 2
Bit 2
Bit 3
Bit (N-2) Bit (N-1)
Bit (N)
T
M
T IDL
= 800µS min.
T INT
t t = 1/ 
SSI





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NXEE2 User Manual INTRODUCTION TO THE NXEE2
9
NXEE2 Programmable Parameters
The NXEE2 is configured by setting its Programmable Parameters. Each channel of the NXEE2 has its own
set of parameters, which allows the NXEE2 to interface with two completely different SSI sensors. These
parameters are broken down into three groups.
SSI Setup Parameters – Six parameters that are used to extract the Data Value from the SSI bit stream. These
parameters define the SSI clock speed, number of bits in the SSI stream, the position and length of
the Data Value within the stream, and the format of the data.
Data Setup Parameters – Six parameters that affect the Data Value and Velocity information. These parame-
ters allow you to scale the Data Value, preset it to a programmable count, change the direction of
increasing counts, set its rollover position in rotary applications, and set the update time of the Veloc-
ity information.
Channel Setup Parameters – Three parameters that are used to enable or disable the channel’s LED, define
the function of the channel’s discrete DC input, and define the data that is transmitted to the host con-
troller.
SSI Setup Parameters
SSI Clock Frequency
This parameter allows you to set the SSI clock frequency to one of four values: 125 kHz, 250 kHz, 500 kHz
or 1 MHz. The default frequency of 125KHz allows for the greatest sensor cable length. Increasing the fre-
quency will not decrease the network transfer time to your host controller. The frequency should only be
increased if your sensor cannot operate at 125KHz.
Number of SSI Data Bits
This parameter sets the number of bits in the entire SSI data transfer. This parameter has a range of one to
thirty-two. Its default value is twenty-four.
MSB Number & Number of Data Value Bits Parameters
As the examples show in figure R1.2, these two parameters tell the NXEE2 where the Data Value is embed-
ded in the SSI data stream. The MSB Number parameter specifies the location of the first bit of the Data
Value in the SSI data stream. The Number of Data Value Bits parameter specifies the length of the Data
Value. The default value of the MSB Number parameter is one. The default value for the Number of Data
Value Bits parameter is twenty-four. The default values will work with AMCI multi-turn SSI DuraCoders as
well as many other multi-turn rotary SSI encoders and linear sensors.
Figure R1.2 Data Value in SSI Data Stream Examples
SSI DATA BITS
MSB Number = 2
Number of Data Value Bits = 12
Format used by AMCI SSI
single turn DuraCoders
SSI DATA BITS
MSB Number = 6
Number of Data Value Bits = 16
MSB Number = 1
Number of Data Value Bits = 24
Format used by AMCI SSI multi-turn DuraCoders

INTRODUCTION TO THE NXEE2 NXEE2 User Manual
ADVANCED MICRO CONTROLS INC.
10
NXEE2 Programmable Parameters (continued)
SSI Setup Parameters (continued)
Data Type
This parameter tells the NXEE2 to interpret the data from the SSI sensor as a binary number or as a gray code
encoded number. The default is Binary.
Data Logic
This parameter is included to handle rare situations where the Data Value is reported with negative logic. If
this parameter is set, the NXEE2 will invert the data bits before performing any scaling. The default value is
Positive, which means that the NXEE2 will not invert the Data Value bits from the sensor.
Data Setup Parameters
These six parameters affect the Data Value and Velocity information. These parameters allow you to scale the
Data Value, preset it to a programmable count, change the direction of increasing counts, set its rollover posi-
tion in rotary applications, and set the update time of the Velocity information.
Full Scale Count
The Full Scale Count parameter is important only if you are using a rotary encoder. If you have a linear
device, such as a magneto-restrictive linear displacement sensor or a laser range finder, leave this parameter
at its default value of zero.
If you are using a rotary encoder, the Full Scale Count parameter sets the number of counts the NXEE2 can
expect before the position rolls over to zero. If this value is not set, or set incorrectly, the NXEE2 will not be
able to handle the roll over between the maximum value and zero correctly.
The Full Scale Count parameter must be set to the total number of counts generated by the encoder. For exam-
ple, the single turn SSI DuraCoder from AMCI is a twelve bit encoder by default. For this encoder, the Full
Scale Count should be set to 212 = 4,096. For multi-turn encoders, the Full Scale Count parameter should be
set to (the number of counts per turn) * (the total number of turns). For example, the multi-turn SSI Dura-
Coder from AMCI defaults to 4,096 counts per turn and 4,096 turns. In this example, the Full Scale Count
should be set to 4,096 * 4,096 = 16,777,216.
The SSI DuraCoders from AMCI are fully programmable with a software utility available on
our website. While programming, you set the DuraCoder’s Full Scale Count parameter. When
configuring the NXEE2, make sure that the NXEE2’s Full Scale Count parameter matches the
DuraCoder’s Full Scale Count parameter.
Count Direction
The Count Direction parameter allows you to reverse the direction of travel needed to increase the Data
Value. For simplicity’s sake, the two values for this parameter are called Positive and Negative. When this
parameter is set to its default of Positive, the Data Value is not changed. When this parameter is set to Nega-
tive, the change in Data Value depends on the value of the Full Scale Count parameter.
If the Full Scale Count parameter equals zero, a linear sensor is assumed and the Data Value is changed to
(2n– (Data Value)), where ‘n’ is the value of the Number of Data Value Bits parameter.
If the Full Scale Count parameter is non-zero, a rotary sensor is assumed. The Data Value is change to
((Full Scale Count - Data Value) MOD Full Scale Count). The modulus function is required to keep the zero
position as zero.
Changing this parameter will most likely change the Data Value reported by the NXEE2. The
only time this does not occur is if you are using a rotary encoder and the position is at zero
when you reverse the count direction. Because of this, set the Count Direction parameter
before you preset the Data Value.