Mitsubishi Electric MELSEC iQ-R Series - Page 237

APPX
Appendix 1 Calculating Safety Response Time for System Configured with a Safety CPU
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A
The maximum value of safety response time will be the sum of (a) to (c) of the following.
Explanations of symbols and terminologies used for this chapter
• LS: CC-Link IE Field Network link scan time
• DT1, DT2: Response time of a sensor or output-target device. Check and add the following response time of the device
used.
• Safety I/O refresh interval: Fixed scan interval in which a safety program is executed
• Sending Interval Monitoring Time: Time set for each safety connection for Safety CPU and safety remote I/O module
For details, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
 CC-Link IE Field Network Remote I/O Module (With Safety Functions) User's Manual
• Safety refresh monitoring time: Time set for each safety connection with CC-Link IE Field Network parameters. For details,
refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
• Refresh response processing time for safety remote I/O module: Safety remote station refresh response processing time
For details, refer to the following.
 CC-Link IE Field Network Remote I/O Module (With Safety Functions) User's Manual
Item Maximum value
(a) Input device response time DT1
(b) Safety data transmission time (maximum value) Transmission time of CC-Link IE Field Network from safety input to safety output
(c) Output device response time DT2
Total DT1 + DT2 + Safety data transmission time (maximum value)