AddMe Lite
14 I/O Points in a
Single RTU Slave
12 Analog/Universal Inputs
2 Discrete (FET) Outputs
2 Pulse/Discrete Inputs
(shared analog/universal)
Integer and
Floating Point
Holding Registers
AddMe Lite Modbus I/O
Control Solutions’ AddMe Lite features 12 analog/universal inputs
with configurable type and scaling. You can individually configure
each universal input for 10-bit fast analog or discrete input.
Floating point holding registers provide data from the analog I/O
points. In addition, analog (universal) inputs are mirrored to integer registers and may be treated as on/off values. Linearization
tables are provided for 3K, 10K and 20K type II, Lite, and IV
thermistors. Input type and scaling is configured by writing to additional holding registers.
Two of the analog/universal inputs can be configured as pulse
counting inputs. These inputs measure frequency, or totalize pulse
input at up to 5 kHz. The totalizing input has non-volatile count
storage. The count is stored to non-volatile memory every 15 minutes, providing a 28-year life.
All configuration properties are accessible via holding registers.
You can configure AddMe Lite from any Modbus master. To simplify and streamline this process, we offer a free PC based configuration tool you can download from our web site. This tool allows
you to simply select options from lists and enter scaling factors
without keeping of track of which holding registers you need to
look at. This tool also stores your entire configuration in an XML
file on your PC so you can easily replicate your configuration later.
The “send all” function will download your entire configuration to
a new device.
• 12 Analog/universal inputs
• 0-10VDC, Thermistor, dry contact
• 10-bit resolution
• Software selectable input types
• 2 Discrete outputs
• Open drain FET, 1A @ 30VDC
• 2 Discrete inputs (shared with 2 analog input terminals)
• TTL to 24VDC on/off state input
• Pulse count frequency input to 5kHz
• Totalizing count input with non-volatile storage
• Modbus RTU slave, integer and floating point registers
• EIA-485 half duplex (2-wire)
• Powered by 10-30VDC or 24VAC 50/60 Hz
• Power Consumption: 0.15A @ 24VDC
• DIN rail mounting, 100mm H x 70mm W x 60mm D
• LED indicators for power and communications
• Pluggable screw terminal blocks
• Operating temperature -40°C to +85°C
• Humidity 5% to 90% non-condensing
• FCC Class B, CE Mark
The AddMe Family of Modbus I/O includes browsable help pages and
free PC based configuration tools.
Our PC based configuration tool simplifies setup of analog input
type and scaling, analog output scaling, and discrete I/O timing
parameters. You can also compile and download your program
via this tool.
Here are some of the things you will find in the online
browsable help pages:
• Sensor wiring diagrams
• Wiring terminal list and I/O wiring diagrams
• Indicator guide
• Sensor calibration tool (interactive)
• Modbus register map
• Configuration tool user guide
• Programming language help
You can preview the online help at
or download the entire “site” for offline browsing on
your PC. The configuration tool software is included
in the download zip file. All you need to get started,
besides the AddMe Lite and your PC, is an RS-232
to RS-485 converter. All configuration is done via the
Modbus RTU port.
Visit our web site for
• Full details
• User Guides & Software
• Pricing
• On-Line Ordering
380 OAK GROVE PKWY, SUITE 100 • PO BOX 10789
ST. PAUL, MN 55110-0789
VOICE (651) 426-4410 • FAX (651) 426-4418
TOLL FREE 1-800-872-8613
© 2007 Control Solutions, Inc. AddMe® is a registered trademark of Control Solutions, Inc. Modbus®, is a
registered trademark of Schneider Electric Corp.
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