Acromag BusWorks XT1541-000 User manual

BusWorks® XT Series
10/100MB Industrial Ethernet I/O Modules
USB Programmable, Modbus TCP/IP I/O
Model XT1541-000
Combination Analog Voltage Output and Digital I/O
(8 DC Voltage Output Channels and 4 Digital I/O Channels w/
Active-High Inputs and Tandem High-Side Switched Outputs)
USER’S MANUAL
ACROMAG INCORPORATED Tel: [phone]
30765 South Wixom Road Fax: [phone]
Wixom, MI 48393-2417 U.S.A. email: [email protected]
Copyright 2014, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice. 8501-015B

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 2 - http://www.acromag.com
- 2 -
http://www.acromag.com
Table of Contents
GETTING STARTED
DESCRIPTION.......................................................................................................4
Key Features........................................................................................................................4
Application ..........................................................................................................................4
Mechanical Dimensions .......................................................................................................5
DIN Rail Mounting & Removal..............................................................................................5
ELECTRICAL CONNECTIONS ............................................................................ 6
Power Connections..............................................................................................................7
USB Connection ...................................................................................................................8
Output Connections.............................................................................................................9
Digital Input Connections...................................................................................................12
EMI Filter Installation.........................................................................................................13
Earth Ground Connections .................................................................................................14
CONFIGURATION SOFTWARE...................................................................... 15
Quick Overview .................................................................................................................15
TECHNICAL REFERENCE
CONFIGURATION STEP-BY-STEP ................................................................ 18
Getting Connected.............................................................................................................18
Device/Communication Setup............................................................................................19
I/O Config/Test Page..........................................................................................................22
Calibration Page ................................................................................................................25
i2o Mapping Page ..............................................................................................................27
Network Home Page ..........................................................................................................30
BLOCK DIAGRAM ............................................................................................. 31
How It Works.....................................................................................................................31
About Modbus TCP/IP .......................................................................................................32
IP Addressing.....................................................................................................................33
Dynamic Host Configuration Protocol (DHCP).....................................................................34
Domain Name System (DNS)..............................................................................................35

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 3 - http://www.acromag.com
- 3 -
http://www.acromag.com
MODBUS REGISTERS ...................................................................................... 35
Register Functions .............................................................................................................36
Data Types.........................................................................................................................37
Register Maps....................................................................................................................37
TROUBLESHOOTING....................................................................................... 43
Diagnostics Table...............................................................................................................43
Service & Repair Assistance ...............................................................................................47
ACCESSORIES .................................................................................................... 48
Software Interface Package................................................................................................48
USB Isolator.......................................................................................................................48
USB A-B Cable....................................................................................................................48
USB A-mini B Cable ............................................................................................................48
DIN Rail Bus Connector Kit .................................................................................................49
Low EMI Double-Shielded Patch Cable ...............................................................................49
SPECIFICATIONS .............................................................................................. 50
Model Number ..................................................................................................................50
Analog Outputs..................................................................................................................50
Digital Outputs & Excitation...............................................................................................52
Digital Inputs .....................................................................................................................53
Power................................................................................................................................54
USB Interface.....................................................................................................................54
Ethernet Interface..............................................................................................................55
Enclosure & Physical ..........................................................................................................56
Environmental ...................................................................................................................56
Agency Approvals ..............................................................................................................57
Reliability Prediction..........................................................................................................57
Configuration Controls.......................................................................................................57
All trademarks are the property of their respective owners.
IMPORTANT SAFETY CONSIDERATIONS
You must consider the possible negative effects of power, wiring, component, sensor, or software failure in the design of
any type of control or monitoring system. This is very important where property loss or human life is involved. It is
important that you perform satisfactory overall system design and it is agreed between you and Acromag, that this is your
responsibility.
The information of this manual may change without notice. Acromag makes no warranty of any kind with regard to
this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Further, Acromag assumes no responsibility for any errors that may appear in this manual and makes no
commitment to update, or keep current, the information contained in this manual. No part of this manual may be
copied, or reproduced in any form without the prior written consent of Acromag, Inc.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 4 - http://www.acromag.com
- 4 -
http://www.acromag.com
GETTING STARTED
DESCRIPTION
Symbols on equipment:
Means “Refer to User’s Manual
(this manual) for additional
information”.
The XT1541-000 is a Modbus TCP/IP network module for interface and control of up
to eight channels of DC Voltage Output and four channels of sourcing digital I/O. It
provides output isolation from the network and power and is conveniently setup
and configured for network communication via a USB connection to any Windows-
based PC (Windows XP and later versions only).
Key Features
CE Approved, UL/cUL Class I, Division 2 Approved.
Designed and Manufactured with High Quality/High Reliability with AS9100
(Aerospace Quality)/ISO9001.
Combination of Octal DC Voltage Output (±10V, ±5V) and Quad Sourcing
Digital I/O.
Modbus TCP/IP Protocol Support.
This model includes i2o support for its digital inputs and is compatible with
i2o messaging as a target i2o output for other BusWorks input models.
Conveniently setup and configured w/ Windows software via USB.
High-Density 22.5mm wide package with pluggable, front-facing terminals.
Dual Isolated, auto-crossing, 10/100Mbps Ethernet ports w/ Auto-Negotiation
offers a convenient “daisy chain” network connection saving switch ports.
Operation & Diagnostic LED indicators aide trouble-shooting.
Bus Power Ready for Clean Wiring along the DIN Rail, and/or for Redundant
Power Connection.
High 1500VAC Isolation between output channels (combined as a group), the
network, and power.
Outputs & Digital I/O, power, network, and USB ports are all transient
protected.
Wide-range DC power input from 12-32V.
Wide ambient temperature operation from -40°C to +65°C.
Thoroughly Tested and Hardened For Harsh Environments.
Withstands High Shock (25G) and Vibration (4G).
Application
This module is designed for high-density mounting on T-type DIN rails. XT models
may be mounted side-by-side on 22.5mm centers and can plug-together for
modular expansion with a shared power connection along the DIN rail. This model
provides 8 channels of DC Voltage Output and 4 channels of sourcing digital output
with tandem active-high digital inputs, all monitored and controlled via a
10/100Mbps Ethernet interface using the Modbus TCP/IP application protocol.
Units are conveniently setup and configured for network operation via a USB
connection to a host computer running Acromag configuration software. This
model includes support for i2o at its digital inputs and also acts as an i2o target
output for other XT input models. i2o allows XT input channels to network-link to
outputs of other BusWorks models via i2o messaging over the Ethernet network.
!

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 5 - http://www.acromag.com
- 5 -
http://www.acromag.com
Mechanical Dimensions
Units may be mounted to 35mm
“T” type DIN rail (35mm, type
EN50022), and side-by-side on
22.5mm (0.9-inch) centers.
WARNING: IEC Safety Standards
may require that this device be
mounted within an approved
metal enclosure or sub-system,
particularly for applications with
exposure to voltages greater than
or equal to 75VDC or 50VAC.
DIN Rail Mounting & Removal
Refer to the following figure for attaching and removing a unit from the DIN rail. A
spring loaded DIN clip is located on the bottom side. The opposite rounded edge at
the bottom of the top side allows you to tilt the unit upward to lift it from the rail
while prying the spring clip back with a screwdriver.
To attach the module to T-type DIN rail, angle the top of the unit towards the rail
and place the top groove of the module over the upper lip of the DIN rail. Firmly
push the unit downward towards the rail until it snaps into place.
To remove it from the DIN rail, first separate the input terminal blocks from the
bottom side of the module to create a clearance to the DIN mounting area. You can
use a screwdriver to pry the pluggable terminals out of their sockets. Next, while
holding the module in place from above, insert a screwdriver along the bottom side
path of the module to the DIN rail clip and use it as a lever to force the DIN rail
spring clip down, while pulling the bottom of the module outward until it
disengages from the rail. Tilt it upward to lift it from the rail.
IMPORTANT: For ambient operation above 55°C, space units apart to aide cooling.
Module is intended to be mounted upright on a horizontal DIN rail, allowing cool air
to enter in through the bottom vents and warm air to exhaust out the top vents.
Above 55°C, a space of at least 20mm between modules is recommended to aide
cooling in this manner.
99.0
(3.90)
114.5
(4.51)
22.5
(0.89)
DIMENSIONS ARE IN MILLIMETERS (INCHES)

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 6 - http://www.acromag.com
- 6 -
http://www.acromag.com
ELECTRICAL CONNECTIONS
WARNING –EXPLOSION HAZARD –Do not disconnect equipment unless power has
been removed or the area is known to be non-hazardous.
WARNING –EXPLOSION HAZARD –Substitution of any components may impair
suitability for Class I, Division 2.
WARNING –EXPLOSION HAZARD –The area must be known to be non-hazardous
before servicing/replacing the unit and before installing.
Wire terminals can accommodate 14-26 AWG solid or stranded wire. Output wiring
may be shielded or unshielded type. Twisted pair, or shielded twisted pair, output
wiring is recommended. Terminals are pluggable and can be removed from their
sockets by prying outward from the top with a flat-head screwdriver blade. Strip
back wire insulation 0.25-inch on each lead and insert the wire ends into the cage
clamp connector of the terminal block. Use a screwdriver to tighten the screw by
turning it in a clockwise direction to secure the wire (use 0.5-0.6nM torque). Since
common mode voltages can exist on I/O wiring, adequate wire insulation should be
used and proper wiring practices followed. As a rule, output wires are normally
separated from power and network wiring for safety and isolation, as well as for low
noise.
T-Rail
35mm DIN Rail
SCREWDRIVER SLOT
FOR REMOVAL FROM
"T" TYPE DIN RAIL
TILT MODULE UPWARD TOWARDS RAIL AND
HOOK ONTO UPPER LIP OF RAIL. ROTATE
MODULE DOWNWARD TO ENGAGE SPRING
CLIP ONTO LOWER LIP OF RAIL.
TOP
BOTTOM
SERIES XT MODULE DIN RAIL MOUNTING AND REMOVAL
SPRING CLIP
USE SCREWDRIVER TO REMOVE
MODULE FROM RAIL AS SHOWN
SERIES XT MODULE
(POWER THIS SIDE)
BUSWORKS
XT
USB
RUN
STAT
!

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 7 - http://www.acromag.com
- 7 -
http://www.acromag.com
Power Connections
Connect a DC power supply from 12-32V as shown in the drawing below. Observe
proper polarity (input power is reverse-polarity protected). Optionally, the unit may
be powered (or redundantly powered) via its DIN rail connector (optional terminal
required, see bottom figure below). For supply connections, use 14 AWG wire rated
for at least 80°C. Do not exceed 36V DC peak. Be sure to connect earth ground to
the DC- terminal, ideally closest to the module, as the other isolated circuits shunt
their circuit commons to DC- via high-voltage isolation capacitors. For Excitation
connection to power (see Output Connections).
MODEL XT1xxx-000 POWER WIRING
+
-
DC SUPPLY
(12-32V)
EARTH
GROUND
DC POWER
TERMINALS
TB3
TB4
RIGHT EDGE VIEW
+
-
24
23
UNIT IS DC-POWERED ONLY AT 12 TO 32VDC.
RIGHT SIDE
TB1
DIN RAIL SPRING CLIP
FUSE
POWER INPUT IS ISOLATED FROM I/O
AND NETWORK CIRCUITS.
CAUTION: DO NOT EXCEED 36VDC, OR
DAMAGE TO THE UNIT MAY RESULT.
NOTE: IT IS RECOMMENDED THAT
SUPPLIES CAPABLE OF DELIVERING
MORE THAN 2.5A TO THE UNIT BE
FUSED WITH A HIGH SURGE
TOLERANT FUSE.
TB6 OF TX6
20191817
-
+
ANY
(I/O)
TB5 OF TX5
TB4 OF TX4
(I/O)
(DC POWER)
16151413
XT1xxx-000
TB2 TB5
TB6
35mm DIN RAIL
MALE TERMINAL BLOCK
ACROMAG 1005-221
(RIGHT-SIDE CONNECTION)
FEMALE TERMINAL BLOCK
ACROMAG 1005-220
(LEFT-SIDE CONNECTION)
DC-
DC+
DC-
DC+
+
-
DC SUPPLY
(12-32V)
EARTH
GROUND
+
-
DIN RAIL BUS POWER
FUSE
CAUTION: DO NOT EXCEED 36VDC, OR DAMAGE
TO THE UNIT MAY RESULT.
NOTE: IT IS RECOMMENDED THAT SUPPLIES
CAPABLE OF DELIVERING MORE THAN 2.5A TO
THE BUS BE FUSED WITH A HIGH SURGE
TOLERANT FUSE.
-
+
YOU CAN OPTIONALLY CONNECT POWER
TO THE DIN RAIL BUS CONNECTOR ALONG
THE DIN RAIL USING AN OPTIONAL
TERMINAL AS SHOWN.
LEFT RIGHT
BUSWORKS
XT
USB
RUN
STAT
+
-+ -
24232221
OPTIONAL/REDUNDANT
RAIL (BUS) POWER
POWERING INDIVIDUAL MODULES
VIA SCREW TERMINALS ON UNIT
ANY XT MODEL
EARTH
GROUND OR
HERE
(GROUND ONE END, NOT BOTH)
IT IS BEST TO APPLY EARTH GROUND
CLOSEST TO THE MODULE, BUT NEVER
AT BOTH ENDS OF THE CONNECTION.
HERE
IT IS BEST TO APPLY EARTH GROUND
CLOSEST TO THE MODULE, BUT NEVER
AT BOTH ENDS OF THE CONNECTION.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 8 - http://www.acromag.com
- 8 -
http://www.acromag.com
Power Connections…
Note that you can use the bus power connector of the module to interconnect
modules to unit power by plugging them together and connecting them as a group
to a suitable power supply using an optional left or right terminal block, 1005-220 or
1005-221, as shown below. Analog & digital output excitation cannot be connected
along the bus of this model.
USB Connection
WARNING: The intent of mating USB with this unit is so that it can be conveniently
setup and configured in a safe area, then installed in the field which may be in a
hazardous area. Do not attempt to connect a PC or laptop to this unit while
installed in a hazardous area, as USB energy levels could ignite explosive gases or
particles in the air.
Reconfiguration Does Not Require a Network Connection, as the module uses
a USB connection to configure the unit.
USB Signal Isolation Recommended - You may use Acromag model USB-
ISOLATOR to isolate your USB port, or you can optionally use another USB
signal isolator that supports USB Full Speed operation (12Mbps). USB isolation
is required to break the inadvertent ground loop between the output circuits
and earth ground at your PC.
Connect Unit to Power Before USB.This unit does not use USB power, but
requires separate connection to DC power.
35mm DIN Rail
DIN Rail Bus Connector
Acromag 1005-063
MALE 1005-221
RIGHT-SIDE CONNECTOR
BUSWORKS
XT
USB
RUN
STAT
BUSWORKS
XT
USB
RUN
STAT
BUSWORKS
XT
USB
RUN
STAT
BUSWORKS
XT
USB
RUN
STAT
-
+DC+
DC- -
+
FEMALE 1005-220
LEFT-SIDE CONNECTOR
(SHIPS WITH MODULE)
YOU CAN OPTIONALLY CONNECT POWER TO THE
DIN RAIL BUS CONNECTOR ALONG THE DIN RAIL
USING AN OPTIONAL TERMINAL AS SHOWN HERE.
MODULES MAY INTERCONNECT TO SHARE A
POWER CONNECTION BETWEEN MODULES.
XT MODEL OPTIONAL BUS POWER WIRING
!

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 9 - http://www.acromag.com
- 9 -
http://www.acromag.com
Output Connections
This model combines eight analog voltage outputs with four channels of sourcing
digital outputs. The Sourcing digital outputs require additional excitation (a
separate connection to power). Observe proper polarity when making digital
output excitation connections. Refer to the following figures to wire the voltage
outputs, digital outputs, and digital output excitation of this model.
PERSONAL COMPUTER
RUNNING WINDOWS OS
1 METER CABLE
USB-A MALE
TO HOST USB PORT
HOST
USB
HOST USB SERIAL
PORT CONNECTOR
AT BACK OF PC
CONFIGURATION
SOFTWARE
ACROMAG
HOST PC RUNNING
USB-B MALE
DEVICE
CONNECT
PC
CONNECT
POWER RESET
CONNECTION
Acromag
THE LEADER IN INDUSTRIAL I/O
R
USB-A MALE
USB-ISOLATOR
USB MiniB Socket
(Front-Panel of Module)
ANY XT MODULE
USB MiniB MALE
XT SERIES USB MODULE CONNECTIONS
LED
(RECOMMENDED)
USED FOR CONFIGURATION ONLY IN A SAFE OR ORDINARY LOCATION
CABLE Model 4001-113
MODEL NO. - USB-ISOLATOR
CABLE Model 4001-112
Refer to Configuration Software Kit, Model XT-SIP, which includes:
1 ea, Model 4001-113 USB Cable
1 ea, Model 4001-112 USB Cable
1 ea, Model USB-ISOLATOR
1 ea, Model XT-CONFIG CDROM Software
BUSWORKS
XT
USB
RUN
STAT
1 ea, Model 5035-360 Ethernet Cable

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 10 - http://www.acromag.com
- 10 -
http://www.acromag.com
Voltage Output Connections
The XT1541 model can drive up to eight DC Voltage Outputs at up to 2mA each
(±5V, ±10V ranges are supported). A 16-bit voltage DAC drives a buffer amplifier at
each output channel and sources DC current through the load to output return
(RTN). Outputs share a common return connection and are not isolated channel-
to-channel. Refer to the following figures for example DC Voltage Output
connections to this model.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 11 - http://www.acromag.com
- 11 -
http://www.acromag.com
Digital Output Connections
(Requires Additional
Excitation at TB6)
The four digital outputs of this model are open-source, high-side switches, inserted
between digital excitation and the load, and include 10K pull-downs to Return
(RTN). Outputs will source excitation to loads at up to 32V and 250mA each. You
must separately connect Excitation to operate the digital outputs. Observe proper
polarity when making I/O connections. Refer to the following figures to wire the
digital outputs of this model.
NOTE: You must connect digital EXC to a voltage source from 6 to 32VDC in order
to operate the digital outputs, as the sourcing digital output driver is also powered
from the excitation supply.
IMPORTANT –Add Protection with Inductive Loads: Outputs do include internal
reverse-bias shunt diodes to help protect the output switch from damage due to
high reverse-bias voltages generated when switching inductive loads. But you
should still add external protection near the inductive load to prevent these
transients from being sent along the connection wires. Place a diode (1N4006 or
equivalent) across an inductive load with the cathode to (+) and the anode to (-).
For greater drive capability or for switching AC loads, it is common to use an
appropriately rated interposing relay. Add protection local to the relay as noted
above when driving inductive relay coils.
Per UL, when the outputs are used to drive interposing relays for switching AC or DC
devices of higher voltage/current, the coil ratings for the interposing relay shall not
exceed 24VDC, 100mA.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 12 - http://www.acromag.com
- 12 -
http://www.acromag.com
Digital Input Connections
(Inputs Do Not Require
Additional Excitation)
Digital inputs of this model accept voltage signals up to 32V, are active-high, and
use TTL thresholds for logic transfer. The digital inputs of this model are already
wired to accomplish loopback monitoring of their tandem open-source, high-side
switched output, but may alternately be used to monitor input levels from the field
when their corresponding outputs are switched OFF. Digital inputs are additionally
pulled down to Return via a 10K pull-down resistor installed on the board and will
never float. Observe proper polarity when making I/O connections. Refer to the
following figures to wire the digital inputs of this model.
IMPORTANT: You must keep the tandem output turned off when using the input to
sense voltage levels from the field to prevent contention between the field signal
and the output channel, which may be turned ON. If you inadvertently cause
contention, it can trigger the output’s protection mechanism to shut it down. In this
instance, you would have to cycle excitation OFF/ON to restore operation of the
digital output.
NOTE: You do not need to connect digital excitation if you are only using the digital
input channel to monitor a field input (tandem output is OFF). Digital excitation is
only required to operate the sourcing digital output channel.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 13 - http://www.acromag.com
- 13 -
http://www.acromag.com
EMI Filter Installation
For low CE-rated radiated emissions, the use of one or two split/snap-on ferrite cores on all
cables or harnesses to/from the device as shown in the drawing on the next page is helpful.
These are also helpful for cables connected to Host USB and Ethernet as well. Use Laird
28A2029-0A2 or similar for inputs/outputs and Power (order Acromag 4001-135), Laird
28A0592-0A2 or similar for USB cable (Acromag 4001-140), and Laird 28A0807592-0A2 or
similar for Ethernet cable (Acromag 4001-139). Locate ferrites by clamping them outside of
all I/O cables or wiring harnesses to/from the module (USB, Ethernet, input/output group,
DC power), and as close to the module as possible. While the use of these ferrites is helpful
to obtain low CE-rated emissions, it may not be required for your application. Note also
that individual cables may share a ferrite, but it is not good practice to combine isolated
circuits inside the same ferrite, but rather separate isolated circuits for safety and greater
noise immunity.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 14 - http://www.acromag.com
- 14 -
http://www.acromag.com
Earth Ground Connections
(To Protect Your Equipment,
Lower System Noise, and
Reduce Emissions)
The unit housing is plastic and does not require an earth ground connection itself.
If the module is mounted in a metal housing, an earth ground wire connection to
the metal housing’s ground terminal (green screw) is usually required using suitable
wire per applicable codes. Circuits wired to outputs/excitation, power, and the
network should be earth grounded as well, as reflected in the connection diagrams.
The ground connections noted are recommended for best results and help protect
the unit by giving it a low impedance path to ground for shunting destructive
transient energy away from the module. See the Electrical Connection Drawings for
recommended output, power, and network ground connections.
Note: A USB isolator is recommended when connected to a grounded Personal
Computer for configuration purposes. This will avoid a inadvertent ground loop
that will occur if your input signal is already earth grounded, as a PC commonly
earth grounds its USB port and this makes contact with both the USB signal and
shield ground which is held in common to the input circuit return of this module.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 15 - http://www.acromag.com
- 15 -
http://www.acromag.com
CONFIGURATION SOFTWARE
While this is an Ethernet network I/O module, it can only be configured and calibrated via its Configuration Software over
a USB connection to a Windows-based PC or laptop. USB saves you the trouble of having to already know its IP address
setting, or having to change the address setting of your network interface card to match its address domain in order to
communicate with it. USB software is contained in a zip file that can be downloaded free of charge from our web site at
www.acromag.com. Look for the software zip file 9500465A.zip in the Documents and Downloads page for your XT
product. Initially, you will have to answer a few questions to open a user account and download this file to your
computer. This zip file will extract to a modelconfig.exe executable file installed in an Acromag subdirectory off the
Program Files directory of your PC. Note that you must have administrator rights to download and install this software
onto your PC or laptop. Once you have installed the software, be sure to navigate to the Program Files\Acromag
subdirectory and select the correct modelconfig.exe software for your particular module. This same software is also
included on a CDROM bundled in the Configuration Kit XT-SIP (see Accessories), but downloading it from the web will help
to ensure that your software is the most up-to-date available. This software is compatible with XP or later versions of the
Windows operating system. Note that the particular modelconfig.exe software for this unit supports five other
combinational model variations—three models with 8 voltage outputs, plus three models with 4 current outputs, each
including 4 sourcing digital I/O channels.
Quick Overview
After booting the Configuration software for this model, the
Device/ Communication Setup page shown below will appear. This
screen is used to selectively connect units over USB, and to
configure the Ethernet parameters necessary to communicate over
an Ethernet network. Once you Select a device and click “Open” to
connect to an XT1541-000, your screen will look similar to the
following:
IMPORTANT: Delay clicking [Open] immediately after power up
until the unit has established its Ethernet connection (wait ~30
seconds after powering-it up to give it time to initialize), or you
may encounter data transfer or timeout errors. To remedy, simply
turn power off to the unit, close the software, then turn power
back on to the unit and reboot the software after the unit has
powered up.
Device Select (First Connect to the Unit Here)
Select from connected modules and Open or
Close communication with them.
Display the Model, Serial Number, and
Manufacturer of the connected module and
report the status of the USB connection.
Reboot a module to force a system reset to the
power-up state.
Restore a module to its initial “out-of-box”
state.
Ethernet Setup (Setup your Network Parameters)
Retrieve a connected module’s current
network configuration with [Get].
Set the Network IP address required for
Ethernet communication on your network.
Set the subnet mask, gateway, and/or domain
name server addresses for your network.
Write your parameters to the connected unit
with [Send] and read back the USB
communication status.
Three other screens can be selected by clicking
their tabs, the I/O Config/Test Page, the Calibration
Page, and the i2o Mapping Page. A short
description of the controls of each of these pages
follows:

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 16 - http://www.acromag.com
- 16 -
http://www.acromag.com
Quick Overview…
I/O Config/Test Page (Configure Your Unit Here)
After connecting to your unit and setting up its network
parameters, click the I/O Config/Test Page tab to display the
screen below:
HELP –You can press F1 for Help on a selected or highlighted field
or control. You can also click the [?] button in the upper-right
hand corner of the screen and then click to point to a field or
control to get a Help message pertaining to the item you pointed
to.
For a more detailed configuration procedure, see the
Configuration Step-by-Step section of Technical Reference on
page 18 of this manual.
I/O Configure (Configure I/O Channels Here)
Use [Get Config] to retrieve the connected
module’s I/O configuration.
Select the specific channel to configure.
Set the range for the selected analog output
channel.
Optionally apply a Tag Name to the channel for
reference over USB (up to 8 characters).
Configure a watchdog timer for the output
channel and a Timeout value or state. Setup
auto-refresh for the outputs to combat digital
upset or force a restart following thermal
shutdown (digital outputs). You can even
choose to invert the logic for the tandem digital
input channel, useful for i2o operation.
Choose Legacy Support=”Yes” if you want the
output to scale ±20000 to ±100%, versus ±30000
for ±100%.
Optionally invert the Input Logic of digital input
channels.
Support Coil Register Access versus Holding
Register for Digital Output Writes: Check to
enable writing digital outputs to all four outputs
using a single register in one transaction.
Read the status of your configuration message
over USB in the Status field.
Use [Send Config] to send your configuration to
the connected unit and read message Status.
You only need to click [Send…] one time after
setting up each channel, and all channels will be
written at once.
Analog Output & Digital Output Test
After making I/O configuration changes, you can use
the I/O Test controls to verify operation of your I/O.
Read the current analog output settings by
clicking [Read Analog Output Settings].
Set the output level of analog output channels
by entering field values and clicking [Write
Analog Outputs].
Turn digital outputs On/Off with [Channel…].
Use [Start/Stop Polling] to poll digital inputs.
Display the current state of the inputs with
simulated LED’s and “1” or “0” superimposed on
the lamps for ON or OFF.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 17 - http://www.acromag.com
- 17 -
http://www.acromag.com
Quick Overview…
HELP –You can press F1 for Help on a selected or highlighted field
or control. You can also click the [?] button in the upper-right hand
corner of the screen and then click to point to a field or control to
get a Help message pertaining to the item you pointed to.
After configuring and/or testing your channels, you can click on the
Output Calibration tab to display the following screen:
If you click the i2o Mapping tab, the following screen will appear:
For a more detailed configuration procedure, see the
Configuration Step-by-Step section of the Technical Reference on
page 18 of this manual.
Calibration Page (Calibrate Your Outputs Here)
If your outputs exhibit excessive error, you can use
the controls of this page to calibrate each Voltage
Output channel separately.
Click the [Output Cal Instructions] button to
begin analog output calibration and follow the
on-screen prompts to calibrate output Zero
and Full-scale of the output channel.
Use [Zero] and [Full Scale] and measure the
output range zero or full-scale signal and
enter the measured value here.
i2o Mapping
This model includes a special remote messaging
function called i2o, for input-to-output
communication with respect to its digital input
channels. This allows it to send its digital input
information over the network, to digital outputs
on another unit, or compatible unit, without
having to hard-wire a connection. The i2o
Mapping Page shown at left is used to setup this
feature by specifying the IP address of the target
output module to send input channel data to,
either upon change-of-state, or cyclically at the
update time specified.
Set the IP address of one or two target digital
output devices (XT1111, XT1121, or XT1541
XT1531 modules) to send this modules digital
input data to their digital output channels
(four channels at a time).
Set the Holding Register address of the group
of 4 channels at the XT1111, XT1121, XT1531,
or XT1541 output module you are targeting to
send the digital input data of this module to.
Set an Update Time to cyclically send this
module’s digital input states every interval of
update time.
Specify to send data upon change of state, or
cyclically per an update rate that you specify.
Retrieve the current i2o configuration from
the connected module, or send a new
configuration to the connected module.

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 18 - http://www.acromag.com
- 18 -
http://www.acromag.com
TECHNICAL REFERENCE
CONFIGURATION STEP-BY-STEP
Getting Connected
This section will walk you through
the Connection-Configuration
process step-by-step. But before
you attempt to reconfigure this
module, please make the following
electrical connections.
1. Connect Outputs: Refer to Output Connections at the front of this manual and
connect your output(s) as required for your application. Outputs of this model
share a common return (RTN) connection. Be sure to additionally connect one
return (RTN) terminal to earth ground near the module. Earth ground applied
to return allows the input filters to shunt potentially harmful transient energy
to ground, helping to protect the output circuits from transient damage.
2. Connect Digital Output Excitation: The digital outputs of this model require a
separate connection to excitation to operate them. Refer to Output
Connections at the front of this manual and connect to output excitation as
required. If you are only using the digital input channels (outputs OFF), then no
connection to excitation is required.
3. Connect Power: You need to connect power from 12-32V to power this
module. Current required will vary with voltage level (refer to Specifications).
Your supply must be capable of providing at least twice the maximum rated
current for your voltage level. You can choose to connect to Power via
terminals on the unit, or via optional terminals that connect to the module’s
bus connector along the DIN rail (See Power Connections).
4. Connect to PC via USB: Refer to USB Connections of page 9 and connect the
module to your PC or laptop using the USB isolator and cables provided in
Configuration Kit XT-SIP.
Now that you have made your connections and applied power, you can
execute the XT15XXConfig.exe software to begin configuration and USB control
of your unit (software is compatible with XP or later versions of the Windows
operating system). Note that the same software is used for six models, Three
version of XT154x-000 with 8 voltage outputs and 4 digital I/O channels, plus
three versions of XT153x-000 with 4 current outputs and 4 digital I/O channels.
IMPORTANT: Allow the unit to fully power-up and establish its Ethernet
connection before attempting to open USB communications with the unit using
the XT15xxconfig.exe software (wait ~30 seconds after powering-it up to give it
time to initialize).
Note that you do not connect your module to an Ethernet network in order to
configure it. It is configured for network operation by initially connecting to USB
with a host PC running model-specific configuration software. This has the
advantage of not having to know the module’s IP address setting, or having to
change the address setting of your network card to match the module’s subnet
address domain in order to talk to it.
Connect Input
Connect Common
Connect Power
Connect
PC/USB
Configure

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 19 - http://www.acromag.com
- 19 -
http://www.acromag.com
Device/Communication Setup
Note that you should already have power connected to the XT1541 at this point, as this model does not utilize USB power.
After executing the Acromag Configuration software for this model, a screen similar to that shown below will appear, if
you have not already connected to your transmitter via USB (note Device Select fields are blank under these conditions).
Once you have selected a device, click the [Open] button to open
communication with the unit and the screen will fill out similar to
the following (the selected unit’s Model, Serial Number,
Manufacturer, and a USB connection status message will be
displayed as shown in the screen below):
The Device Communication Setup screen is split into
two parts: Device Select & Ethernet Setup.
Device Select
Connect your PC to the unit via USB, and the unit’s
model-serial information will appear in the Device
field as shown in the second screen at left.
If you happen to be connected to more than one
unit via a USB hub, you can use the Device scroll
field to select another unit, using the serial
information suffix of the Device Model number to
discern one unit from another.
Once you have selected a device, click the [Open]
button to open communication with the unit.
After clicking [Open], the selected unit’s Model,
Serial Number, Manufacturer, and a connection
status message will be displayed as shown in the
second screen at left.
TIP: Always Close a connection with one device
before selecting another device.
You can use the [Reboot Module] button to force a
reset of the unit by clicking on it, an effect
equivalent to a power-on reset.
You can use the [Restore Module…]button to
restore a module to its initial “out-of-box”
configuration.
Ethernet Setup
Use the [Get] button to retrieve the current
Ethernet setup of the connected module
(sometimes the Active Values fields will indicate
zero’s and you must click [Get] to retrieve the actual
active values).
Use the Ethernet Setup portion of the Device/ Communication Setup screen shown above to specify network parameters
required to communicate with this module (host) over Ethernet. By connecting USB to set these parameters, you do not
have to change your PC or network adapter’s IP address in order to address this unit, simplifying communication setup
(however, you may still have to consult with your network administrator to complete the contents of this page). The
functionality of these network parameters is defined below:

BusWorks Model XT1541-000
8 CH Voltage Output + 4 CH Digital I/O w/USB & Modbus
Acromag, Inc. Tel: [phone] - 20 - http://www.acromag.com
- 20 -
http://www.acromag.com
Device/Communication Setup…
The internet or world-wide web is actually a large network made up of many smaller networks (sub-networks) linked
together by gateways or routers. The gateway or router serves as an access point to/from a particular sub-network. For
example, your ISP provides DSL modems or cable modems which connect your local hardware to the Internet and often
serve as gateways. The gateway address is the address of this gateway or router in the same subnet as the host, and is
used as the bridge to connect to various other sub-networks with different sub-network addresses and address masks,
that collectively connect together to make up the Internet. Data packets sent over the Internet contain both the sender’s
internet address and the receiver’s address. A packet is first sent to a gateway computer that understands its own
domain or group of host addresses. The gateway reads the destination address of the packet, and if it is outside of its
own domain, it forwards the packet on to an adjacent gateway that again reads the destination address. Then that
gateway will forward the message on, if the address is not within its domain. Eventually, one gateway recognizes the
packet as belonging to a host within its domain. Finding a match, that gateway forwards the packet directly to the host
whose address is specified. Rather than continually passing a packet from gateway to gateway, some networks will use a
default gateway which is the address of another node on the same network that the software uses when an IP address
does not match any other routes in the routing table (address domain) of the primary gateway.
Ethernet Setup…continued
An IP Address (Internet Protocol Address) is a
unique identification number for any host (this
module) on any TCP/IP network (including the
internet). It uniquely defines one host from all
other computers (hosts) on the Internet. The IP
address is made up of four octets (8 bits), each
octet having a value between 0-255 (00H-FFH). It is
expressed here in decimal form, with a period
between octets.
The Subnet Mask is used to subdivide the host
portion of the IP address into two or more subnets.
The subnet mask will flag the bits of the IP address
that belong to the network address, and the
remaining bits that correspond to the host/node
portion of the address. The unique subnet to which
an IP address refers to is recovered by performing a
bitwise AND operation between the IP address and
the mask itself, the result being the subnet address.
Gateway Address refers to the IP Address of the gateway this module is to cross, if your local area network happens to be
isolated or segmented by a gateway. Typically, it is assigned the first host address in the subnet address space. If a
gateway is not present, then this field should contain an unused address within the host subnet address range.
NOTE: Fortunately, this model uses USB to setup its network configuration parameters, and you can instead change its IP
address to an address compatible with your own PC network without having to network connect to it first. This saves you
from having to consult with your network administrator to either temporarily change your PC’s TCP/IP configuration (see
TCP/IP Properties of Network Configuration in Windows), or perhaps having to create a separate private network using a
second network adapter installed in your PC. The necessary steps would vary with your operating system, but can get
quite involved.
A DNS server relates symbolic names to actual numeric IP addresses, while the DHCP server is responsible for dynamically
passing out IP addresses. The DNS 1 Address refers to the IP address of the first Domain Name Server used on this
network. The DNS 2 Address refers to the IP address of the secondary Domain Name Server used on this network.