Description
Product Introduction
The National Instruments cFP-AO-210 is an eight-channel analog voltage output module for the Compact FieldPoint distributed I/O platform. Its job is straightforward: convert digital control values from the FieldPoint system into analog voltage signals used to command external equipment. NI specifies eight 0–10 V outputs, 12-bit resolution, and an all-channel update rate of 200 Hz.
The cFP-AO-210 is particularly useful where a Compact FieldPoint controller needs to drive proportional devices, actuators, motor-control circuits, valves, or other equipment accepting voltage-command signals. Each channel provides a Vout, COM, and Vsup connection, with the COM terminals internally common. The module can source 1 mA directly, while an external 15–30 VDC supply can increase the available sourcing current to as much as 10 mA per channel.
NI also built protection and installation features into the module. The cFP-AO-210 provides overcurrent indication, short-circuit protection, transient protection, and HotPnP operation. NI’s own documentation lists the module as an 8-channel voltage output module for Compact FieldPoint and now marks the product as no longer available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | National Instruments |
| Model | cFP-AO-210 |
| Part Number | 777318-210 |
| Platform | Compact FieldPoint |
| Product Type | Analog Voltage Output Module |
| Number of Channels | 8 |
| Output Type | Voltage |
| Output Range | 0–10 V |
| DAC Resolution | 12-bit |
| Direct Output Current | 1 mA/channel |
| Output Current with External Supply | Up to 10 mA/channel |
| External Supply | 15–30 VDC |
| All-Channel Update Rate | 200 Hz |
| Power Source | Compact FieldPoint terminal base/backplane |
| Operating Temperature | -40 to 70 °C |
| Transient Protection | 2,300 Vrms |
| Overcurrent Detection | Yes |
| Short-Circuit Protection | Yes |
| Hot Plug-and-Play | Yes |
| Product Status | Discontinued |
The electrical specifications above are supported by NI’s operating instructions and NI’s current product support page.
Main Features and Engineering Considerations
Eight independent analog voltage outputs make the cFP-AO-210 suitable for multi-loop control applications where several analog command signals must be generated from one Compact FieldPoint node. The 12-bit DAC provides 4,096 nominal digital levels across the 0–10 V output span.
The module is not a conventional 4–20 mA analog-output card. Its native output is 0–10 V, and this distinction matters when replacing an analog output module in an existing control cabinet. The cFP-AO-200, for example, belongs to the same Compact FieldPoint family but is a current-output module, so it should not be treated as a direct functional substitute.
The external-supply arrangement also deserves attention. A standard channel can source only 1 mA, while an external 15–30 VDC supply permits sourcing up to 10 mA. A replacement test should therefore reproduce the actual field-load configuration rather than simply checking whether the output produces voltage with no load.
For maintenance of older FieldPoint systems, the fact that NI has discontinued the module is relevant. Existing installations may depend on tested surplus or refurbished hardware, making calibration and load testing more important than simply confirming that the module powers up.
CFP-AO-210
Application Scenarios
Typical applications include:
- Industrial analog control
- Proportional valve control
- Motor-control circuits
- Hydraulic actuator control
- Laboratory automation
- Machine-control systems
- Distributed Compact FieldPoint I/O
- Test and measurement systems
- Robotic actuator control
A documented robotics application used the cFP-AO-210 to drive proportional valves for hydraulic control, while another application used the module for motor-control circuits.
Engineer’s Guide: Field Pitfalls
⚠️ Do not confuse cFP-AO-210 with cFP-AO-200.
The AO-210 is a voltage-output module; the AO-200 is a current-output module.
⚠️ Check the field load.
The standard output is limited to 1 mA/channel. Higher current requires the specified external 15–30 VDC supply arrangement.
⚠️ Verify the Compact FieldPoint architecture.
This is a cFP module, not a generic PXI, CompactRIO, or standard PLC analog card.
⚠️ Check calibration.
For precision control, verify 0 V, mid-scale, and full-scale output under the actual connected load. A 12-bit converter does not by itself guarantee system-level accuracy.
⚠️ Treat discontinued status seriously.
NI currently marks the cFP-AO-210 as no longer available, so replacement hardware should be checked for calibration condition, channel operation, connector condition, and previous service history.
Frequently Asked Questions
What is NI cFP-AO-210?
It is an 8-channel analog voltage output module for National Instruments Compact FieldPoint.
What is the NI part number?
The associated part number is 777318-210.
What voltage does it output?
Each channel provides 0–10 V output.
How many channels does it have?
It has 8 analog voltage-output channels.
What is the resolution?
The DAC resolution is 12 bits.
What is the update rate?
The all-channel update rate is 200 Hz.
Is the cFP-AO-210 still manufactured by NI?
No. NI’s current product page identifies it as no longer available.
What should be checked before purchasing a replacement?
- cFP-AO-210 model
- 777318-210 part number
- Eight-channel configuration
- 0–10 V output range
- External supply requirement, if applicable
- Compact FieldPoint terminal-base compatibility
- Channel-by-channel output test
- Calibration condition
- Connector condition
- Load test under the actual application
