Mitsubishi Electric L26CPU-BT User Manual page 438

(2) Master station (RY)  Remote I/O station (output)
This indicates the time from the moment a CPU device turns ON (OFF) until a remote I/O station output turns ON
(OFF).
(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.)
• Rio: Remote I/O response time
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(SM  n) + (LS  1) + Rio
Normal value
(SM  n) + (LS  2) + Rio
Max. value
(b) Calculation example
Master station sequence scan time of 20ms, link scan time of 3ms, and remote I/O response 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
436
Synchronous mode
(SM  n) + (LS  1) + Rio
(SM  n) + (LS  2) + Rio
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) + Rio
SM + (LS  2) + Rio
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) + Rio
(SM  n) + (LS  2) + Rio
Synchronous mode
(20  1) + (3  1) + 1.5 = 24.5ms
(20  1) + (3  2) + 1.5 = 27.5ms