Chapter 3 Precautions; Precautions For System Design; Precautions For Management - Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference

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PRECAUTIONS
3.1

Precautions for System Design

Validation for the overall system
Please note that you must carry out a validation every time you make a safety-related modification to your overall system.
Check the following;
• The safety devices are connected to the correct safety sensors and actuators in your safety application.
• The safety remote I/O modules and safety input/output devices have been parameterized correctly.
• The variables have been linked to the safety sensors and actuators correctly (single channel or dual channel).
• Line control (short-circuit and cable break monitoring) is implemented in your application if it is required in your application.
• Variables of the safety FB are connected to proper data.
Error and DiagCode
The safety FB has an internal state, which transitions depending on a change in the input signal. The value for this state is
output as a DiagCode (o_wDiagCode). When an error is detected in the safety FB, the error flag (o_bError) is set to ON. If
error information for the safety FB is required for your application, use these values for programming.
3.2

Precautions for Management

Project data management
Manage and operate the project data properly. A system manager has to back up the project and save the backup data so
that the data restoration is always possible.
3 PRECAUTIONS
3.1 Precautions for System Design
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