Chapter 31 Running A Safety Program; Overview - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

31
RUNNING A SAFETY PROGRAM
This section describes how to execute a safety program. Information not described in this chapter is same as that of the
standard CPU. ( Page 38 RUNNING A PROGRAM to  Page 92 MEMORY CONFIGURATION OF THE CPU
MODULE)
For details on the setting method (registration procedure) of safety programs, refer to the following.
 GX Works3 Operating Manual
31.1

Overview

The Safety CPU executes standard programs and safety programs, and the safety function module executes safety programs
only. During operations, the Safety CPU verifies the execution results of safety programs with those of the safety function
module.
Safety CPU
(Performs both standard control and safety control.)
Standard control
<Program B>
<FB α>
FB file for the
standard program
Standard program file
Devices/labels that can be used in safety programs
Only safety devices and safety labels can be used in safety programs.
• Safety device: Page 554 Safety Devices
• Safety label: Page 559 Safety Label
31 RUNNING A SAFETY PROGRAM
524
31.1 Overview
Data are sent and
received using
FB
the standard/safety
shared label.
Safety program file
Standard device
Safety device
Safety label
Standard/safety
shared label
Standard label
Standard latch device,
standard latch label
File register
Device/label memory
Data required for programming
Safety control
<FB Ò>
<Program A>
FB file for the
safety program
FB
Execution results are verified.
Safety function module
(Performs safety control only.)
Safety control
<FB Ò>
<Program A>
FB file for the
safety program
FB
Safety program file