MI 8-4 interface

MI 8-4 interface for use with Renishaw''s hard-wired probe systems on machining centres and lathes.

Page contentDownloadsCall your local office Contact us online

About MI 8-4

MI 8-4 The MI 8 / MI 8-4 interfaces process signals from Renishaw hard wired probes and convert them into voltage-free Solid State Relay (SSR) outputs for transmission to the CNC machine control.

SSR converter

The SSR converter is used to convert the OCT electrical output of the high precision arm (HP Arms series) with TS20 and signal conditioning module to voltage-free SSR output.

MI 8-4 interface

Interface for hard wired probes that processes signals between a trigger probe and the CNC control. The MI 8-4 is also compatible with the Fanuc Direct Measurement input option.

MI 8-4 ordering information

Part numberDescription
A-2157-0001MI 8-4 interface
A-2023-0010SSR converter

Data sheet

  • Data sheet: MI 8-4 interface unit Data sheet: MI 8-4 interface unit

    The MI 8-4 interface processes the probe signal from a hard wired probe and converts it into the correct format to connect into a controller's probe input.


Installation and user's guide

Useful links

Probe benefits calculatorProbe benefits calculator

Quickly calculate and see the benefits gained from probing on machine tools using our benefits calculator.

Machine tool probe selector iconMachine tool probe selector

Quickly identify which probe would best suit your machine shop set-up or inspection needs using our machine tool probe selector.


Further reading iconFurther reading

Technical articles about machine tool products, systems and probing techniques.


The Productive Process Pyramid™ (simple)Transform your manufacturing

Get help from the process control experts and reap the rewards.

Next steps

Contact us online if you require more information or you have a pricing query, or alternatively you may like to speak directly to your local Renishaw office.