Connections

MFIO

Multi-Function I/O

0-20mA / GPIO / Counter / Digital Out

Multi-Function I/O

The MFIO rounds out the already impressive set of I/Os available on the RIO xR3.

This input can be switched into any of 4 different modes:

Current Loop Input: to measure 0-25mA currents.
General Purpose Input: in case all other hybrid inputs are busy.
Pulse/Frequency Counter: to keep track of rapid fire changes.
Low Power Digital Output: fast acting, digital out.

MFIO

Current Loop Input

Measures current loop inputs with a maximum range of 0-25mA.

Usually 0-4mA and 20-25mA ranges are reserved to signal error/fault conditions, while current loop inputs use 4-20mA to signal proper operating conditions.

I/Os

1 MFIO – Current Loop Mode
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

The MFIO can be programmed to detect the frequency of an external signal (up to 2kHz), or count pulses.

I/Os

1 MFIO – Pulse/Freqency Mode
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

MFIO

Pulse/Frequency Counter

MFIO

General Purpose Input

Switch to general purpose input if one more input is required. Input signal passes through a Schmitt trigger to reduce noise. Limit to signal levels below 36Vdc.

I/Os

1 MFIO – General Purpose Input
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

The last mode the MFIO can be switched into is LDPO (Low Power Digital Output).

It is a digital output signal, reacting faster than the latching relays. However, it’s use usually requires an external pull-up to guarantee proper operation.

Not intended to switch external loads. Use as a signal output only.

I/Os

1 MFIO – Low Power Digital Output
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

MFIO

Low Power Digital Output

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