Control Solutions is your source for Modbus I/O and BACnet I/O.
Control Solutions Modbus products include the AddMe Junior web server
Control Solutions Modbus I/O and BACnet I/O are freely programmable.
 Control Solutions BACnet products include 32-point I/O

Model AMJR-14-SM
Modbus RTU Slave

12 Analog/Universal Inputs
2 Discrete Outputs
RS-485 Serial Port

Control Solutions’ AddMe Lite features 12 inputs which accept analog input from thermistors or 0-10V sensors, or discrete input from dry contact switches. AddMe Lite also provides 2 discrete ouputs which can sink 1A at 24VDC.

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 10K and 20K type II, III, and IV thermistors. Input type and scaling is configured by writing to additional holding registers.

• 12 Analog/universal inputs
- - - 0-10VDC, Thermistor, dry contact
- - - Software selectable input type
- - - 10-bit resolution
- - - 2 channels capable of pulse count input
• 2 Discrete outputs
- - - Open drain FET, 1A current sink
• Modbus RTU RS-485 Slave
• Powered by 10-30VDC or 24VAC 50/60 Hz
• Power Consumption:
- - - 0.15A @ 24VDC max.
• DIN rail mounting, 100mm H x 70mm W x 60mm D
• Pluggable screw terminal blocks
• Operating temperature -40°C to +85°C
• Humidity 5% to 90%
• FCC Class B, CE Mark

AMJ14SM AddMe Lite Programmable I/O with Modbus RTU $245.00

The online support package you download right here for free includes help pages in browser format, JavaScript sensor calibration tool, Windows device configuration tool, and PL/i compiler. To review the help pages, just click the image above. To download, go to the Downloads page.

AddMe Lite is freely programmable using Control Solutions' PL/i language. The PC based compiler is part of the free configuration tool you download from this web site.

AddMe Lite model AMJR-14-S is simply an I/O node on the Modbus network until you download a program code file. The program is saved in Flash, and AddMe Lite now becomes a stand alone controller (still a slave on the network).

You can configure AddMe manually by writing to Modbus registers. The free Windows based configuration tool figures out the registers for you. You simply select options from lists. Click the image below to see the tool close up.