Mitsubishi Electric L26CPU-BT User Manual page 440

(2) Master station (RY)  Remote device station (RY), (RWr)
This indicates the time from when the CPU device turns ON (OFF) until the remote device station output turns
ON (OFF), or the time from when data are 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.)
• Rd: Remote device station processing time
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(SM  n) + (LS  1) + Rd
Normal value
(SM  n) + (LS  2) + Rd
Max. value
(b) Calculation example
Master station sequence scan time of 20ms, link scan time of 3ms, and remote device station processing time
of 1.5ms
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(20  1) + (3  1) + 1.5 = 24.5ms
Normal value
(20  1) + (3  2) + 1.5 = 27.5ms
Max. value
438
Synchronous mode
(SM  n) + (LS  1) + Rd
(SM  n) + (LS  2) + Rd
Synchronous mode
(20  1) + (3  1) + 1.5 = 24.5ms
(20  1) + (3  2) + 1.5 = 27.5ms
Without block guarantee of cyclic data per station
Asynchronous mode
SM + (LS  1) + Rd
SM + (LS  2) + Rd
Without block guarantee of cyclic data per station
Asynchronous mode
20 + (3  1) + 1.5 = 24.5ms
20 + (3  2) + 1.5 = 27.5ms
Synchronous mode
(SM  n) + (LS  1) + Rd
(SM  n) + (LS  2) + Rd
Synchronous mode
(20  1) + (3  1) + 1.5 = 24.5ms
(20  1) + (3  2) + 1.5 = 27.5ms