16-Channel Potentiometer Expansion Module
UPOT16$97.00
Add Programmable Potentiometers to Any UXP Expansion Port
The UPOT16 Expansion Module adds 16 programmable digital potentiometers to compatible ProXR controllers equipped with a UXP Expansion Port. Available in 10kΩ, 50kΩ, and 100kΩ versions, each potentiometer provides 256 programmable tap positions for precise electronic resistance control.Simply connect the UPOT16 to any compatible NCD controller to add programmable potentiometer outputs to your existing system. The module can be used to expand NCD potentiometer controllers with additional channels or to add potentiometer functionality to compatible relay controllers, creating a single system capable of both relay control and programmable resistance adjustment.
Multiple expansion modules may be chained together, allowing systems to scale up to 256 programmable potentiometers using the same simple command structure.
Expansion Module
The UPOT16 is a UXP expansion module and requires a compatible NCD controller equipped with a UXP Expansion Port. This module cannot operate as a stand-alone device and must be connected to a host controller for operation.
Potentiometer Expansion Board at a Glance
- 16 Programmable Potentiometers Installed
- 256 Levels of Programmable Resistance
- Operates in the 0 - 5 Volt Range
- Maximum Current Capacity of 1ma
- 3 Contact Points for Each
- Available in 10K, 50K and 100K Resistance
- Temperature Rating -40° C to 85° C
- Expandable to 256 Potentiometers - Expansion Module
- ProXR Potentiometer or UXP Board Required
- Daisy Chain Boards Together
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UXP Expansion Board
Potentiometer expansion boards plug into the UXP Expansion Port on any ProXR (must have UXP in the part number) or Potentiometer Board to add potentiometers. Expansion boards can be daisy chained together to add up to 256 potentiometers as needed.
Digital Potentiometer Expansion Board
"More Channels. Same Commands. Expand to 256 POTs."
Add 16 Potentiometers Through the UXP Expansion Port
Expand any compatible NCD controller equipped with a UXP Expansion Port by adding sixteen additional programmable digital potentiometers. Whether you're expanding an existing programmable potentiometer controller or adding resistance control to another compatible ProXR controller, this expansion board integrates seamlessly using the same command structure and expansion architecture.Programmable Resistance Outputs
Each
potentiometer provides three terminals: A, Wiper, and B.
Sending a lower value moves the wiper toward terminal A, decreasing the resistance between A and the wiper while increasing the resistance between he wiper and B.
Sending a higher value moves the wiper toward terminal B, decreasing the resistance between the wiper and B while increasing the resistance between A and the wiper.
The first 32 potentiometer channels can store a programmable startup position, allowing your application to automatically restore critical resistance values after power is applied.
Resistance Output Only
This board provides a programmable resistance output, not a programmable voltage output. It is designed for applications operating between 0 and 5VDC with a maximum 1mA wiper current per channel. Exceeding these limits may permanently damage the potentiometers.Choosing the Right Resistance Value
Digital potentiometers are available in 10kΩ, 50kΩ, and 100kΩ versions. The resistance value you select should match the requirements of the circuit you are replacing or designing.- 10kΩ is the most common choice and works well for many signal conditioning, amplifier, and general-purpose control applications.
- 50kΩ is often selected when a higher resistance range is needed while maintaining moderate current flow.
- 100kΩ is best suited for high-impedance circuits where very little current is required.
💡 Relay Pros Pro Tip:
If you're selecting a programmable potentiometer to replace a manual potentiometer, simply choose the same resistance value as the component you're replacing.
Seamless UXP Expansion
Simply connect the expansion board to the UXP Expansion Port on a compatible NCD controller. Multiple expansion boards can be chained together, allowing systems to grow to as many as 256 programmable potentiometers without changing your software or command structure.Because the expansion board is part of the ProXR architecture, existing applications continue to communicate using the same familiar POT Command Set.
Expand as Your Application Grows
Built on NCD's proven ProXR platform, the controller is designed to grow with your application.The integrated UXP Expansion Port supports expansion up to 256 programmable potentiometers, while the XR Expansion Port allows NCD relay expansion boards to be added to the same system. This makes it possible to combine programmable resistance control and relay control using a single controller architecture.
UXP Expansion Module
This is a UXP Expansion Module and cannot operate on its own. It must be connected to a compatible NCD controller equipped with a UXP Expansion Port.The ProXR Command Set
Simple Serial Commands. Serious Control.
The ProXR family of controllers is driven by a powerful, low-level serial command set. You send a short numeric or Hex command to the board - and the board responds immediately.This design keeps your software fast, reliable, and easy to integrate into almost any platform, from small scripts to full automation systems.
How to Send Commands
All
ProXR controllers operate using a small sequence of bytes sent over a serial connection.
You can send commands as:
- Decimal byte values
- Hex byte values
What a Command Looks Like
This command will set a single Potentiometer to a specified value where POT is the channel number and value is the new value of the potentiometer:254 170 0-255(Channel Number) 0-255(Value) - Set specific POTs value
0xFE 0xAA 0x00-0xFF 0x00-0xFF - If you require Hex
The controller processes the command and returns a confirmation byte 85 (0x55 Hex) when the operation completes.
Base Station Compatible
NCD's Base Station Software provides a simple point-and-click interface for learning the command structure, testing communications, and controlling potentiometer outputs before writing software.It is an excellent development tool for evaluating hardware and generating the commands used in your own applications.
💡 Relay Pros Pro Tip:
Let Base Station Show You the Command! Base Station software can show you the exact command being sent to
the controller. When you control the potentiometers using the point-and-click interface - Base Station displays
the actual command being transmitted
to the board.
This is extremely useful for programmers. You can perform the function you want in your application and instantly see the
decimal or hexadecimal command - the same command you'll use in your programming.
5-Yeary Warranty & Guarantee
Every potentiometer is covered by:- 5-Year Functional Warranty
- 30-Day Money-Back Guarantee
