Mitsubishi MELSEC-Q Series User Manual page 122

5 DATA LINK PROCESSING TIME
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(4) Master station (RWw) → local station (RWr)
This indicates the time from the moment data is set to the master station CPU
device until the data is stored in the local station CPU device.
[Expression]
[Normal value]
(a) Asynchronous mode
SM + LS 2 + SL [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
(Example) When the master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
SM + LS
= 20 + 3
= 36 [ms]
(b) Synchronous mode
SM n + LS
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
n: (LS/SM)value when fractions following the decimal point are
rounded up to the next whole number
(Example) When the master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
SM
= 20
= 36 [ms]
[Maximum value]
(a) Asynchronous mode
SM + LS 2 + SL [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
(Example) When the master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
SM + LS
= 20 + 3
= 36 [ms]
2 + SL [ms]
2 + 10
2 + SL [ms]
n + LS 2 + SL [ms]
1 + 3 2 + 10
2 + SL [ms]
2 + 10
MELSEC-Q
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