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FP16: 8 in - 8 out expansion board

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The "up to" figure is just that: A maximum rating, beyond which the board may be damaged.

Some of our competitors leave it at that. They pick the absolute maximum rating out of the data sheet for the component they are using, and quote that as what you can do with their product, with no additional qualifications.

We try to be better than that. Sure, we quote an "up to" headline figure, though even that is carefully tempered by consideration of the overall design of the board, and how you are likely to use it. But then we go the next step and give you some information on how far you can push the board without compromising long term reliability. That extra information is in the board's technical data.

If this leaves any unanswered question about using our boards in your product, feel free to ask us via our contacts page. Our support comes from the actual engineers who designed the product, not via a forum.

The FP16 adds 8 digital inputs and 8 digital outputs to your SPLat controller. The outputs are our "standard" solid state switches as used in practically all our controllers. The inputs feature dual NPN/PNP operation. A simple jumper sets the mode for all inputs at once. Use in preference to XBIO16 if you need more than 32 expansion I/Os.

As outputs the XBIO bidirectional I/O points use a solid state Darlington switches between the pin and ground (0V). The load (say a solenoid coil) has to be connected between the output pin and the positive supply voltage. The maximum allowable output current is up to 400mA steady state, 500mA peak. There are onboard catch diodes, so it is safe driving inductive, non-motor loads up to the rated current. For motors the locked rotor current must be within the output rating. See the documentation for more detail, including allowable output currents when multiple outputs are on at once.

As NPN inputs the XBIO bidirectional I/O points provide industry standard NPN compatibility. Tying the input pin to the positive supply voltage registers as an On (True/logic 1) state. Leaving it open circuit or driving it to the positive supply voltage registers as an Off (False/logic 0). See the documentation for more detail.

As PNP inputs the XBIO bidirectional I/O points provide industry standard PNP electrical compatibility suitable for sensors that actively switch the input pin to the positive supply voltage. See the documentation for more detail.

Technical documentation Compare with other I/O expansion boards


Cable, connectors and miscellaneous small items not illustrated

Developer's kit, contains expansion board with 8DI 8DO, 600mm shielded cable for connecting to the SPLat controller, matching connectors and mounting standoffs.
  • 1 - 4AUD79exGSTUSD≈60
  • 5 - 9AUD78exGSTUSD≈59
  • 10 - 24AUD76exGSTUSD≈58

Shipping weight:
190g / 6.7oz

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Pack of 6 spare ULN2803A output chips
  • 1 - 4AUD22exGSTUSD≈17
  • 5 - 9AUD21exGSTUSD≈16
  • 10 - 24AUD20exGSTUSD≈16

Shipping weight:
25g / 0.9oz