Mitsubishi MELSEC Q Series User Manual page 154

5 DATA LINK PROCESSING TIME
5 - 33
[Maximum value]
(a) Asynchronous mode
SM + LS (2 m + 1) + SL [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
m: Constant (expanded cyclic setting)
Expanded cyclic setting
m
(Example) When the sequence scan time for the master station is 20 ms, the link
scan time is 3 ms, the expanded cyclic setting is "double", and the
sequence scan time for the local station processing time is 10 ms.
SM + LS
= 20 + 3 (2
= 51 [ms]
(b) Synchronous mode
(SM n) 2 + SL [ms]
SM: Master station sequence program scan time
SL: Local station sequence program scan time
LS: Link scan time (see Section 5.1)
n: (LS m/SM)value when fractions following the decimal point are
rounded up to the next whole number
m: Constant (expanded cyclic setting)
Expanded cyclic setting
m
(Example) When the sequence scan time for the master station is 20 ms, the link
scan time is 3 ms, the expanded cyclic setting is "double", and the
sequence scan time for the local station processing time is 10 ms.
(SM n)
= (20 1)
= 50 [ms]
single double
1 3
(2 m + 1) + SL [ms]
3 + 1) + 10
single double
1 3
2 + SL [ms]
2 + 10
MELSEC-Q
quadruple octuple
7 15
quadruple octuple
7 15
5 - 33