---
title: Is there a information that can be stored on the MRCU and then shared via the I/O 
description: Alarm Generation
---

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# Is there a information that can be stored on the MRCU and then shared via the I/O

## Up to 16 generated information items are stored in RAM in order from most recent to oldest. The information stored as the information history is the information code, the time of generation, and the information content.

The stored information history can be read or cleared if any of the following operations is performed.

- Read the information history with the monitor command via communication.
- Clear the information history with the maintenance command via communication.
- Read or clear the information history using the MRC Studio software

Tip  
The information history is cleared when the power supply of the controller is turned off, as it is stored in RAM. 

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