Mitsubishi MELSEC Q Series User Manual page 136

5 DATA LINK PROCESSING TIME
5 - 15
[Maximum value]
(a) Asynchronous mode
SM + LS (2 m + 1) + 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
= 42.5 [ms]
(b) Synchronous mode
SM n + LS m + 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 + LS
= 20 1 + 3
= 30.5 [ms]
single double
1 3
(2 m + 1) + Remote device station processing time [ms]
3 + 1) + 1.5
single double
1 3
m + Remote device station processing time [ms]
3 + 1.5
MELSEC-Q
quadruple octuple
7 15
quadruple octuple
7 15
5 - 15