Mitsubishi Electric MELSEC QS Series User Manual page 63

5
DATA LINK PROCESSING TIME AND STATION
STATUS AT ERROR OCCURRENCE
(3) Safety master station (RX)
The following indicates the time from when a signal is input to a safety remote I/O
station until when a device of the safety CPU module turns OFF (or ON).
The time can be calculated in different formulas, depending on the combination of the
versions of safety CPU module, safety master module, and safety remote I/O stations
to be used. The same calculation formula can be used for both Synchronous and
Asynchronous modes. For the combination of the versions other than below, refer to
Appendix 2.
[Calculation formula]
[Normal value (CC-Link Safety line is stable.)]
(SM
Safety CPU Safety master
module module
10032 or higher 10032 or higher
n) 3 + (SM n)
*1
• SM :Sequence scan time of safety CPU module
• LS :Link scan time (Refer to Section 5.1.)
• n :(LS/SM) value that is rounded up to the nearest whole number
• m :{Safety refresh response processing time
rounded up to the nearest whole number
(Example) When the sequence scan time of the safety CPU module is 10ms,
the link scan time is 1ms, the safety refresh response processing
time is 9.6ms, and the safety remote station input response time is
11.2ms:
(SM n)
response time [ms]
= 10 + (10
= 51.2 [ms]
* 1: For the calculation of SM, refer to the "QSCPU User's Manual (Function Explanation, Program
Fundamentals)".
* 2 For the safety refresh response processing time and the safety remote station input response
time, refer to the manual of the relevant safety remote I/O station.
5.2 Transmission Delay Time
5.2.1 Safety master station Safety remote I/O station
Safety remote I/O station (input)
Serial number (first five digits)
Safety remote station
QS0J65BTS2-8D, QS0J65BTS2-4T QS0J65BTB2-12DT
10031 or higher
m + Safety remote station input response time
*2
3 + (SM n) m + Safety remote station input
1) 3 + (10 1) 1 + 11.2
10032 or higher
*2
[ms]
/(SM n)} value that is
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