Mitsubishi Electric MELSEC-Q Series User Manual page 378

(b) Master station (RY)  remote device station (RY) (RWr)
This is the time between the device of a CPU module turning on (off) and the output of a remote device station
turning on (off) or between data set in the device of a CPU module and the data in a remote device station
changed.
[Formula]
The letters in the table mean as follows.
SM: Master station sequence scan time
LS: Link scan time
LS SM (The decimal point is rounded up.)
n:
LS × m SM (The decimal point is rounded up.)
t:
Rd: Remote device station processing time
m: Constant according to the extended cyclic setting
Expanded Cyclic Setting
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(SM × n) + [LS × {(1 × m) + 1}]
Normal value
+ Rd
(SM × n) + [LS × {(2 × m) + 1}]
Max. value
+ Rd
When master station sequence scan time is 20ms, link scan time is 3ms, and the expanded cyclic setting
Ex.
is "Double"
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(20 × 1) + [3 × {(1 × 3) + 1}] +
Normal value
1.5 = 33.5ms
(20 × 1) + [3 × {(2 × 3)+ 1}] +
Max. value
1.5 = 42.5ms
376
m
Synchronous mode
(SM × t) + (LS × m) + Rd
(SM × t) + (LS × m) + Rd
Synchronous mode
(20 × 1) + (3 × 3) + 1.5 =
30.5ms
(20 × 1) + (3 × 3)
+ 1.5 = 30.5ms
Single Double
1 3
Without block guarantee of cyclic data per station
Asynchronous mode
SM + [LS × {(1 × m) + 1}] +
Rd
SM + [LS × {(2 × m) + 1}] +
Rd
Without block guarantee of cyclic data per station
Asynchronous mode
20 + [3 × {(1 × 3) + 1}]
+ 1.5 = 33.5ms
20 + [3 × {(2 × 3) + 1}]
+ 1.5 = 42.5ms
Quadruple Octuple
7 15
Synchronous mode
(SM × t) + (LS × m) + Rd
(SM × t) + (LS × m) + Rd
Synchronous mode
(20 × 1) + (3 × 3)
+ 1.5 = 30.5ms
(20 × 1) + (3 × 3)
+ 1.5 = 30.5ms