Technical guides / ROBOR

ENGINEERING NOTE

RS-232, CAN or RS-485: selecting an iAHRS interface

USB is common to all interface variants; the model suffix identifies RS-232, CAN or RS-485.

Choosing an iAHRS sensor in 50 seconds

Choosing an iAHRS sensor in 50 seconds

0:50 · English narration · YouTube Shorts

Select the platform, then the interface

V2 and V3 use different sensor components. Choose the sensor platform for your measurement needs, then select the interface supported by your controller.

Read the model suffix

USB is common to all interface variants. No suffix means RS-232, _1 means CAN and _2 means RS-485. For example, iAHRS-V3_1 combines the V3 sensor platform with USB and CAN.

Check protocol compatibility

Confirm the controller port and supported message format. A CAN port does not by itself guarantee CANopen compatibility. Likewise, sharing the RS-485 physical interface does not imply a shared command protocol.

Check the electrical connection

Verify the model-specific power, pinout, grounding, isolation and bus termination requirements. RS-232 and LV TTL UART are not directly interchangeable electrical interfaces.

Request a configuration review

Provide the controller model, number of devices, cable length, update interval and power arrangement. V2 and V3 are coming soon; Korean KC registration is in progress and sales are planned after completion.

Product information: ROBOR product catalog and model manuals. Always check your model and firmware.

Further reading: RS-485 termination — Texas Instruments

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