Mitsubishi MELSEC Q Series User Manual page 151

5 DATA LINK PROCESSING TIME
5 - 30
(3) Master station (RWr)
This indicates the time from the moment data is set to the local station CPU
device until the data is stored in the master station CPU device.
[Expression]
[Normal value]
(a) Asynchronous mode
SM + LS (1
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
= 42 [ms]
(b) Synchronous mode
(SM n)
SM: Master station sequence program scan time
SL: Local station sequence program scan time
LS: Link scan time (see Section 5.1)
n: (LS
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
= (20
= 30 [ms]
local station (RWw)
m + 1) + SL [ms]
single
1
(1 m + 1) + SL [ms]
(1 3 + 1) + 10
1 + SL [ms]
m/SM)value when fractions following the decimal point are
single
1
n) 1 + SL [ms]
1) 1 + 10
MELSEC-Q
double quadruple
3 7
double quadruple
3 7
octuple
15
octuple
15
5 - 30