Acromag BusWorks XT1231-000 User manual

BusWorks® XT Series for Modbus TCP/IP
USB Programmable
10/100MB Industrial Ethernet I/O Modules
Model XT1231-000 & XT1241-000
16-Channel Single-Ended Current Input
16-Channel Single-Ended Voltage Input
USER’S MANUAL
ACROMAG INCORPORATED Tel: [phone]
30765 South Wixom Road Fax: [phone]
Wixom, MI 48393-2417 U.S.A. email: [email protected]
Copyright 2013, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice. 8500952G

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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
Input Connections................................................................................................................9
Analog Return Ground Connection.....................................................................................12
EMI Filter Installation.........................................................................................................12
Earth Ground Connections .................................................................................................13
CONFIGURATION SOFTWARE...................................................................... 13
TECHNICAL REFERENCE
CONFIGURATION STEP-BY-STEP ................................................................ 16
Getting Connected.............................................................................................................16
Device/Communication Setup............................................................................................17
I/O Configuration/Test.......................................................................................................20
I2o Mapping Page ..............................................................................................................24
Network Home Page ..........................................................................................................27
BLOCK DIAGRAM ............................................................................................. 28
How It Works.....................................................................................................................28
About Modbus TCP/IP .......................................................................................................29
IP Addressing.....................................................................................................................30
Dynamic Host Configuration Protocol (DHCP).....................................................................31
Domain Name System (DNS)..............................................................................................31
MODBUS REGISTERS ...................................................................................... 32
Register Functions .............................................................................................................33
Data Types.........................................................................................................................34
Register Map .....................................................................................................................35
TROUBLESHOOTING....................................................................................... 36
Diagnostics Table...............................................................................................................36
Service & Repair Assistance ...............................................................................................39

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 3 -
http://www.acromag.com
- 3 -
http://www.acromag.com
ACCESSORIES .................................................................................................... 39
Software Interface Package................................................................................................39
USB Isolator.......................................................................................................................39
USB A-B Cable....................................................................................................................39
Accessories… .....................................................................................................................40
USB A-mini B Cable ............................................................................................................40
DIN Rail Bus Connector Kit .................................................................................................40
Low EMI Double-Shielded Patch Cable ...............................................................................40
SPECIFICATIONS .............................................................................................. 41
Model Number ..................................................................................................................41
Analog Inputs ....................................................................................................................41
Power................................................................................................................................44
USB Interface.....................................................................................................................45
Ethernet Interface..............................................................................................................45
Enclosure & Physical ..........................................................................................................46
Environmental ...................................................................................................................47
Agency Approvals ..............................................................................................................48
Reliability Prediction..........................................................................................................48
Configuration Controls.......................................................................................................48
REVISION HISTORY ......................................................................................... 49
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 XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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 XT1231-000 and XT1241-000 are Modbus TCP/IP network modules for interface
with up to 16 Single-Ended channels of DC current input (XT1231-000), or 16 Single-
Ended channels of DC voltage input (XT1241-000). These units are conveniently
setup and configured for network communication via a USB connection to any
Windows-based PC (Windows XP and later versions only). They provide input
isolation from network & power.
Key Features
•CE Approved, UL/cUL Class I, Division 2.
•Designed and Manufactured with High Quality/High Reliability with AS9100
(Aerospace Quality)/ISO9001.
•Modbus TCP/IP Protocol Support and w/ i2o Messaging Support.
•Conveniently setup and configured w/ Windows software via USB.
•High-Density 22.5mm wide package with pluggable, front-facing terminals.
•Dual Isolated 10/100Mbps Ethernet ports w/ Auto-Negotiation offers
convenient “daisy chain” network connection which saves switch ports.
•Operation & Diagnostic LED indicators aide trouble-shooting.
•Bus Power Ready for Clean Wiring along the DIN Rail, or for Redundant Power
Connection.
•High 1500VAC Isolation between input channels (as a group), the network
(including port-to-port), and power.
•Input, 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 +70°C.
•Thoroughly Tested and Hardened For Harsh Environments.
•Withstands High Shock (25G) and Vibration (4G).
•Model XT-1231/41-000 is ATEX Certified for Explosive Atmospheres.
II 3 G Ex nA IIC T4 Gc -40oC ≤Ta ≤+70oC
DEMKO 15 ATEX 1561X
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. Units are
conveniently setup and configured for network operation via a USB connection to a
host computer running Acromag configuration software. These models will
interface with any mix of up to 16 Single-Ended current inputs (Model XT1231-000),
or 16 Single-Ended voltage inputs (Model XT1241-000), and monitor the input
values via a 10/100Mbps Ethernet interface using the Modbus TCP/IP application
protocol. These models also support i2o messaging over the network, which can
link analog inputs of these models to analog outputs on another unit.
!

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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.
99.0
(3.90)
114.5
(4.51)
22.5
(0.89)
DIMENSIONS ARE IN MILLIMETERS (INCHES)

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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 (2.08–0.13mm2) solid or stranded
wire with a minimum temperature rating of 85oC. Input wiring may be shielded or
unshielded type. Twisted pair input 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, input wires are normally separated from power and network wiring for safety
and isolation, as well as for low noise pickup.
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 XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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 below). For supply connections, use 14 AWG wire rated for at least
80°C. Do not exceed 36V DC peak.
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 THE OPTIONAL
TERMINALS 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

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
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 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.
Important –End Stops: If this module uses the optionally powered (or redundantly
powered) via the DIN rail bus for hazardous location installations (Class I, Division 2
or ATEX Zone 2) it must use two end stops (Acromag 1027-222) to secure the
terminal block and module (not shown).
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.
•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).
•Reconfiguration Does Not Require a Network Connection, as it uses a USB
connection to configure the unit.
•Connect Unit to Power Before USB –Unit does not use USB 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 THE OPTIONAL TERMINALS AS SHOWN.
MODULES MAY INTERCONNECT TO SHARE POWER
BETWEEN MODULES.
XT MODEL OPTIONAL BUS POWER WIRING
!
!

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 9 -
http://www.acromag.com
- 9 -
http://www.acromag.com
Input Connections
These models monitor DC current inputs and DC voltage inputs, in single-ended
signal fashion (i.e. each input with respect to a common return connection). The
XT1231-000 model has 16 Single-Ended DC current inputs, while the XT1241-000
model has 16 Single-Ended DC voltage inputs. An optional current sensor (Acromag
model 5020-350) may be used with the XT1231-000 to additionally monitor AC
currents. Observe proper polarity when making input connections. Refer to the
following figures to wire the DC current (XT1231), or DC voltage (XT1241) inputs of
these models.
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 XTC-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

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 10 -
http://www.acromag.com
- 10 -
http://www.acromag.com
Current Input
Connections -
Model XT1231-000
The XT1231 model supports up to 16 Single-Ended DC current inputs. The XT1231
shunts current to a common return through a 27.4Ω resistor, driving voltage
through unity-gain buffers to a 16-bit A/D converter with a full-scale bipolar input
range of ±1.325V. The ±20mA current shunted through a 27.4Ω resistor drives
±0.548V to the 16-bit A/D converter. The normal convention is that positive
current is delivered to the channel positive terminal, and returned from the shared
return terminal. Refer to the following figures for example DC current input
connections to the XT1231-000 model.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 11 -
http://www.acromag.com
- 11 -
http://www.acromag.com
Voltage Input
Connections -
Model XT1241-000
The XT1241 model supports up to 16 Single-Ended DC voltage inputs. You can
select input ranges of ±10V, 0-10V, ±5V, or 0-5V.The XT1241 voltage is first
divided-down with a 12.1K/105.2K resistive divider and drives unity-gain buffers to
a 16-bit A/D converter with a nominal full-scale input range of ±1.325V (bipolar
w/±32768). Connect your input voltage to input positive (+) and return (RTN)
while observing proper polarity. If the input signal source is floating (not earth
grounded), then it is recommended that you also connect one input return
terminal to earth ground as shown below. Refer to the following figures for
example DC voltage input connections.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 12 -
http://www.acromag.com
- 12 -
http://www.acromag.com
Analog Return Ground Connection
The connection diagrams provided show proper ground connection with input Return earth
grounded and this is important for the inputs of this model. If your input measurement is
over-range clamped, appears noisy, or unstable, please review your grounding practices.
Note this module includes six common input return terminals (RTN) shared between 16 input
channels. You only need to earth ground one of these terminals to ground the input circuit,
as they are all connected in common.
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 I/O & Power (Acromag 4001-135), Laird 28A0807-0A2 or similar
for Ethernet (Acromag 4001-139), and Laird 28A0350-0B2 or similar for USB cables (Acromag
4001-140). Locate this ferrite by clamping it outside of all I/O cables or wiring harnesses
to/from the module (USB, Ethernet, 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 XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 13 -
http://www.acromag.com
- 13 -
http://www.acromag.com
Earth Ground Connections
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 power, I/O, and the network should be
earth grounded as reflected in the connection diagrams. In general, at least one
input return terminal (RTN) should be earth grounded, and earth ground should also
be included at the DC minus terminal of the power supply. These ground
connections are recommended for best results and help protect the unit by giving it
a low impedance path to ground for shunting destructive transient energy. See the
Electrical Connections Drawings for input, 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 potential ground loop that
can 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 this module holds in common to its input circuit return.
CONFIGURATION SOFTWARE
Get the USB Configuration Software for Your Model
While this is an Ethernet network input 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 an address within 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 9500465 (XT install shield shell program) 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 model-specific executable file
XT12xxConfig.exe, which installs in an Acromag subdirectory off the Program Files directory of your PC. The software is
compatible with XP or later versions of the Windows operating system. 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
family. This same software is also included on a CDROM bundled with the Configuration Kit XT-SIP (see Accessories), but
downloading it from the web will help to ensure that your copy is the most up to date available. The particular
modelConfig.exe software for this unit supports eleven other model variations—six models with 8 differential current or
voltage inputs, plus six models with 16 single-ended current or voltage inputs.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 14 -
http://www.acromag.com
- 14 -
http://www.acromag.com
Configuration Software…
After booting the Configuration software for this model, the
initial Device/Communication Setup page will appear. This
screen is used to selectively connect to units over USB and to
configure the Ethernet parameters necessary to communicate
with them over the network. Once you select a device and click
[Open] to connect to an XT1231-000 or XT1241-00 model, your
screen will look similar to the following:
If you click on the I/O Config/Test Page tab, the following screen
will appear:
For a more detailed configuration procedure, see Configuration
Step-by-Step of the Technical Reference on page 16.
Device Select (First Connect to the Unit Here)
•Select from connected modules and Open
communication with them.
•Display the Model, Serial Number, and
Manufacturer of the connected module and
report the status of the connection.
•Reboot a module to force a system reset to the
power-up state.
•Restore a module to its initial programmed “out-
of-box” state.
Ethernet Setup (Setup your Network Parameters)
•Retrieve the connected modules current network
configuration with the [Get] function.
•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.
•[Send] your parameters to the connected unit
and read back the USB communication status.
There are three other screens that can be selected by
clicking their tabs, I/O Config/Test, and i2o Mapping.
A short description of the controls of the
Device/Communication Setup page follows:
I/O Configure (Channel-by-Channel)
•Retrieve the connected module’s current channel
configuration with [Get Input Config].
•Set the channel 0-15 to address and choose an
input range.
•Apply a tag name to the input channel for
reference purposes over USB (up to 8 characters).
•Set input averaging from 1-200 samples.
•Set Legacy Support to “No” for bipolar/unipolar
input normalization to ±30000/0-30000, or “Yes”
for ±20000/0-20000.
•Send your channel configuration to the connected
unit.
Input Test
After making I/O configuration changes, you can use
the I/O Test controls to verify operation of your
inputs.
•Start/Stop polling the input channels.
•Display the current reading of the inputs.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 15 -
http://www.acromag.com
- 15 -
http://www.acromag.com
Quick Overview…
Once you’ve configured your unit and optionally your i2o
parameters, you are ready to install it in the field, as the unit has
already been factory calibrated.
If you click on the Calibration Page tab, the following screen will
appear:
If you click the i2o Mapping tab, the following screen will appear:
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 Configuration
Step-by-Step of the Technical Reference on page 16.
Calibration
If you encounter an error that is out of
specification, you can click the Calibration Page
tab to display the Calibration control page as
shown at left.
IMPORTANT: This unit has already had its input
channels factory calibrated with high precision.
Attempts to recalibrate the input channels could
degrade their performance if not done properly, or
done using lower grade equipment. Consider your
decision to recalibrate carefully.
Set the Input Range to calibrate from the “I/O
Config/Test” page. Then select your channel to
calibrate here and initiate calibration by clicking
[Input Cal Instructions] and following the on-
screen prompts.
•Click Input [Zero] and you will be prompted to
precisely input the min value of your selected
input range at the input channel, then click
the [OK] button and follow the prompts.
•Click Input [Full-Scale] and you will be
prompted to input the full-scale value of your
selected input range at the channel, then click
the [OK] button and follow the prompts.
•Use [Restore Factory Calibration] to restore
the module’s original factory calibration.
i2o Mapping
This model includes a special remote messaging
function called i2o, for input-to-output
communication. This allows it to send its input
information over the network, to outputs on a
compatible unit, without having to hard-wire an
I/O connection. The i2o Mapping Page shown at
left is used to setup this feature by specifying the
static IP address of the target output module to
send this input channel data to, either upon
percent change, or cyclically at the update time
specified.
•Set the IP address of one or two target devices
to send input data to their output channels.
•Specify to send data upon percent change, or
cyclically per an update time that you specify.
•Retrieve the current i2o configuration from
the connected module, or send a new
configuration to the connected module.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 16 -
http://www.acromag.com
- 16 -
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 Inputs: Refer to Input Connections at the front of this manual and
connect your input(s) as required for your application. Inputs of this model are
single-ended and share a common return. Do not allow inputs to float (see #2
below).
2. Connect Analog Common: If your input signal is not already grounded, you
should connect earth ground to analog input return (to RTN at one point).
Doing this will keep the inputs from floating and within the common mode
range of the analog to digital converter of this model. Failure to ground your
input return could increase measurement noise. Earth ground applied here
also allows the input filters to shunt potentially harmful transient energy to
ground via a low impedance path to ground, helping to protect the input circuit
from transient damage.
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). Supplies capable of
delivering greater than 2.5A should be fused with a surge-tolerant slow-blow
fuse.
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 XT12XXConfig.exe software to begin configuration of your unit
(software is compatible with XP or later versions of the Windows operating
system). Note that this same software is used for twelve different models,
including 3 different models of XT123x-000 with 16 single-ended current
inputs, and 3 different models of XT124x-000 with 16 single-ended voltage
inputs.
IMPORTANT: Allow the unit to fully power-up and establish its Ethernet
connection before attempting to open USB communications with the unit using
the XT12xxconfig.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 an address in the module’s
subnet address domain in order to talk to it.
Connect Input
Connect Common
Connect Power
Connect
PC/USB
Configure

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 17 -
http://www.acromag.com
- 17 -
http://www.acromag.com
Device/Communication Setup
Note that you should already have power connected to the XT123/XT124 at this point, as this model does not utilize USB
power and you will not be able to configure, calibrate, or test the unit without also having power applied.
After executing the Acromag Configuration software for this
model, the screen shown below will appear, if you have not
already connected to your transmitter via USB (note the 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 the
connected module’s information similar to below (the selected
unit’s Model, Serial Number, Manufacturer, and a USB connection
status message will be displayed).
The Device/Communication Setup screen is split into
2 parts: Device Select & Ethernet Setup as follows:
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, Manufacturer, and a connection status
message will be displayed as shown in the second
screen at left. The i2o Mapping Page tab also
disappears, as i2o is not available for Ethernet/IP
models.
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 at left 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 the unit, simplifying communication setup
(you may still have to consult with your network
administrator to complete this page). The
functionality of these parameters is defined below:

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 18 -
http://www.acromag.com
- 18 -
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 an
identification number for any host (this module) on
any TCP/IP network (including the internet) and
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, allowing you to
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.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 19 -
http://www.acromag.com
- 19 -
http://www.acromag.com
Device/Communication Setup…
You can click the [Exit] button in the lower right hand part of this
screen to exit the Configuration Software, or simply click on
another tab to access another page before exiting this software.
Ethernet Setup…continued
The Host Name is the name to be assigned to this
host (this module on the network), if its address
happens to be assigned dynamically using DHCP.
The Addressing Method refers to how this network
module will obtain its IP address when connected to
its network.
Static addressing is as the name implies—static, and
represents a unique fixed IP Address generally
assigned by your service provider or system
administrator. The default address assigned to this
module is 192.168.1.100 and static (refer to product
side label).
DHCP (Dynamic Host Configuration Protocol) refers
to a protocol for assigning dynamic IP addresses to
devices on a network. With dynamic addressing, a
device can have a different IP address every time it
connects to the network. In some systems, it can
even change while it is still connected.
The Protocol addressing method refers to allowing the particular application protocol specific to this model to set the IP
address. This optional selection only applies to Ethernet/IP & Profinet models (required). In this method, the TCP/IP
object of the particular protocol (for Ethernet/IP) sets the address. Profinet requires protocol addressing and has its own
method for accomplishing address assignment via this method.
By default, the module is setup to use Static IP Addressing and a default Static IP Address of 192.168.1.100. You can
optionally choose to have the IP address assigned dynamically via DHCP, but this will additionally require that you specify
a valid Host Name to retrieve the address from. Choosing Protocol gives the application protocol permission to assign the
address and is required for Profinet models.
You can click the [Send] button to write your Ethernet Setup parameters to the unit once you are done making your
selections. This completes any changes made on this page.
The Status field will indicate the status of your sent parameters over USB after clicking [Send]. The Network field will
indicate the current network connection status, as well as the protocol used for this network. The Configuration field will
indicate whether the viewed configuration is from an open device, or a default configuration.
You can click the [Exit] button in the lower right hand part of this screen to exit the Configuration Software, or simply click
on another tab to access another page before exiting this software.

BusWorks Model XT1231-000 & XT1241-
000
16 CH Current/Voltage Input w/USB & Modbus
TCP/IP
Acromag, Inc. Tel: [phone] - 20 -
http://www.acromag.com
- 20 -
http://www.acromag.com
I/O Configuration/Test
You can click the “I/O Config/Test Page” page tab to begin
configuring the unit, and/or optionally test its operation. The I/O
Config/Test screen for this model is shown below:
I/O Configure
If you are connected to a module, the initial I/O
Config/Test screen represents the current
configuration before making changes.
Get the Input Configuration…
If you have loaded the configuration from a saved
file, or have made changes to any fields on this
page, you can always click the [Get Input Config]
button at the top of the screen to retrieve the
connected module’s current channel configuration
(all channels). Otherwise, the connected module’s
current configuration was loaded automatically
when you selected the tab for this page.
Note that if you make any changes to the
selections indicated, the only way to preserve your
changes is to write them to the device by clicking
[Send Input Config] after completing your
selections, or to save them to a file by clicking
“File” in the upper left-hand corner of the screen.
Select the Channel…
This software supports models having 8 and 16
channels, channels 0-7, and/or 0-15, according to
the model. This model has 16 Single-Ended input
channels and you can use this software to
configure each channel individually. You could
choose to configure the channel’s selectively, then
click [Send Input Config] to write the channel
configuration to the unit, or more simply make
changes to many channels and click [Send Input
Config] one time to write all the channel
configurations to the unit at once.
Select the Range…
Use the “Range” field to select your input range.
For the XT1232-000 model, you can select DC
current ranges of ±20mA, 0-20mA, 4-20mA, and 0-
11.17mA. For the XT1242-000 model, you can
select DC voltage ranges of ±10V, ±5V, 0-10V, and
0-5V. Internally, the 16-bit A/D has a fixed range of
±1.325V (±32768).
Set a Tag Name (Optional, up to 8 Characters)….
You can give this input channel a name to
document its purpose if desired. This is not used
by the firmware or software and just serves as a
convenient label for discerning the input function
or its application over USB.