Mitsubishi Electric MELSEC iQ-R Series Safety Manual page 237

The maximum value of safety response time will be the sum of (a) to (c) of the following.
Item
(a) Input device response time
(b) Safety data transmission time (maximum value)
(c) Output device response time
Total
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
Maximum value
DT1
Transmission time of CC-Link IE Field Network from safety input to safety output
DT2
DT1 + DT2 + Safety data transmission time (maximum value)
Appendix 1 Calculating Safety Response Time for System Configured with a Safety CPU
A
APPX
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