Mitsubishi Electric MELSEC QS Series User Manual page 71

5
DATA LINK PROCESSING TIME AND STATION
STATUS AT ERROR OCCURRENCE
[Maximum value]
(a) Synchronous mode
(b) Asynchronous mode
SM n + LS 2 + Remote I/O station output response time
• 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
(Example) When the sequence scan time of the safety CPU module is 20ms,
link scan time is 3ms, and the remote I/O station response time is
20ms:
SM n + LS
= 20 1 + 3
= 46 [ms]
SM + LS 2 + Remote I/O station output response time
• SM:Sequence scan time of safety CPU module
• LS :Link scan time (Refer to Section 5.1.)
(Example) When the sequence scan time of the safety CPU module is 20ms,
the link scan time is 3ms, and the remote I/O station response time is
20ms:
SM + LS
= 20 + 3 2 + 20
= 46 [ms]
* 1 For the remote I/O station output response time, refer to the manual of the relevant standard
remote I/O station.
5.2 Transmission Delay Time
5.2.2 Safety master station Standard remote I/O station
2 + Remote I/O station response time [ms]
2 + 20
2 + Remote I/O station response time [ms]
*1
[ms]
*1
[ms]
5
- 14
1
2
3
4
5
6
7
8