Mitsubishi MELSEC Q Series User Manual page 134

5 DATA LINK PROCESSING TIME
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[Maximum value]
(a) Asynchronous mode
SM + LS 2 m + Remote device station processing time [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
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 remote device
station processing time is 1.5 ms.
SM + LS
= 20 + 3 2
= 39.5 [ms]
(b) Synchronous mode
(SM n) 2 + Remote device station processing time [ms]
SM: Master 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 remote device
station processing time is 1.5 ms.
(SM n)
= (20 1)
= 41.5 [ms]
single double
1 3
2 m + Remote device station response time [ms]
3 + 1.5
single double
1 3
2 + Remote device station processing time [ms]
2 + 1.5
MELSEC-Q
quadruple octuple
7 15
quadruple octuple
7 15
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