Mitsubishi Electric L26CPU-BT User Manual page 442

(2) Master station (RY)  Remote device station (RY), (RWr)
This indicates the time from when a CPU device turns ON (OFF) until a remote device station output turns ON
(OFF), or the time from when data is set to a CPU device until the corresponding data on the remote device
station is changed.
(a) Expression
The meanings of symbols in the table are as follows:
• SM : Master station sequence scan time
• LS: Link scan time
• n: LS  SM (Digits past the decimal point are rounded up to the nearest integer.)
• t: LS  m  SM (Digits past the decimal point are rounded up to the nearest integer.)
• Rd: Remote device station processing time
• m: Constant set in 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}] + Rd
Normal value
(SM  n) + [LS  {(2  m) + 1}] + Rd
Max. value
(b) Calculation example
Master station sequence scan time of 20ms, link scan time of 3ms, and the expanded cyclic setting "double".
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(20  1) + [3  {(1  3) + 1}] + 1.5 =
Normal value
33.5ms
(20  1) + [3  {(2  3) + 1}] + 1.5 =
Max. value
42.5ms
440
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