Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 173

APPENDICES
(b) Calculation example of output transmission time of CC-Link Safety
1) Link scan time of CC-Link Safety
This time is required to calculate output transmission time of CC-Link Safety.
For the calculation example, refer to Appendix 2 (1) (a).
2) Safety refresh monitoring time of CC-Link Safety
This time is required to calculate output transmission time of CC-Link Safety.
The following is the calculation example for CC master (2).
3) Output transmission time of CC-Link Safety
The following is the calculation example of output transmission time of CC-Link
Safety.
Appendix 2 Calculating Safety Response Time When CC-Link Safety and
CC-Link IE Field Network are Used
• In synchronous mode
n: CCLS (2)/WDT (2) = 0.2/10
m: (Safety refresh response processing time/(WDT (2)
= 9.6/(10 1) 1
: CCLS (2) = 0.2 1.5ms
(WDT (2) n) 3 + ((WDT (2)
= (10 1) 3 + ((10
= 50 [ms]
• In asynchronous mode
n: CCLS (2)/WDT (2) = 1.2/10
m: (Safety refresh response processing time/(WDT (2)
= 9.6/(10 1) 1
: CCLS (2) = 1.2 1.5ms
(WDT (2) n) 3 + CCLS (2) + ((WDT (2)
= (10 1) 3 + 1.2 + ((10
= 51.2 52 [ms]
• In synchronous mode
(Safety refresh monitoring time of CC master (2)
+ Output response time of CC remote (2)
- (((WDT (2) n) m)
= (50 2) + 10.4 - (((10
= 70.4 [ms] (Calculation result B-1)
• In asynchronous mode
(Safety refresh monitoring time of CC master (2)
+ Output response time of CC remote (2)
- (((WDT (2) n) m)
= (52 2) + 10.4 - (((10
= 74.4 [ms] (Calculation result B-2)
1
0
n) m) 2 + (WDT (2)
1) 1) 2 + (10 0)
1
0
n) m)
1) 1) 2 + (10 0)
2)
2 + (WDT (2) n) + WDT (2))
1) 1) 2 + (10 1) + 10)
2)
2 + (WDT (2) n) + WDT (2))
1) 1) 2 + (10 1) + 10)
n))
)
n))
2 + (WDT (2) )
APPX
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