Mitsubishi Electric MELSEC iQ-R Series User Manual page 319

Setting examples of the monitoring times
The following table lists setting examples of the transmission interval monitoring time and the safety refresh monitoring time of
the communication cycle intervals when the safety cycle time of the master station is set to 10ms and the safety remote
station refresh response processing time of the safety remote I/O module is set to 2.3ms.
Condition
Safety cycle time of Safety remote
the master station station refresh
response
processing time of
the slave station
(safety remote I/O
module)
10ms 2.3ms
*1 A local station uses the safety cycle time.
*2 Actual communication cycle intervals indicate actual intervals of the communications with the target slave station. Each interval is
determined by multiplying the value set in "Communication Period Interval Setting" by the value set in "Multiple Period Setting".
When "Communication Period Interval Setting" is set to 2ms and the communications with the target slave station are performed at a
normal speed (Operator_Times 4)
Actual communication cycle interval [ms] = 2  4 = 8ms
*3 For the calculation method of the monitoring time to be set to the master station, refer to the following.
Transmission interval monitoring time Page 315 Transmission interval monitoring time
Safety refresh monitoring time Page 316 Safety refresh monitoring time
*4 For the calculation method of the transmission interval monitoring time to be set to the safety remote I/O module, refer to the following.
 CC-Link IE TSN Remote I/O Module (With Safety Functions) User's Manual
• Note that the given setting values are reference values. Set the setting values greater than the calculation
values.
• The greater the setting value, the lower the probability of a safety communication time out occurring due to
noise or other factors.
Actual
communication
*2
cycle interval
*1
4ms
8ms
16ms
32ms
Setting value in the master station
Transmission Safety refresh
interval monitoring monitoring time
*3
time
35ms 60ms
50ms 80ms
60ms 100ms
100ms 300ms
Setting value in a
slave station
Transmission
*3
interval monitoring
*4
time
35ms
50ms
60ms
100ms
APPX
Appendix 7 Processing Time
A
317