Mitsubishi Electric MELSEC-Q Series User Manual page 374

(b) Master station (RY)  remote I/O station (output)
This is the time between the device of a CPU module turning on (off) and the output of a remote I/O station
turning on (off).
[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:
Rio: Remote I/O response time
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
Normal value (SM × n) + (LS × 1) + Rio
Max. value (SM × n) + (LS × 2) + Rio
When master station sequence scan time is 20ms, link scan time is 3ms, and remote I/O response time is
Ex.
1.5ms
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(20 × 1) + (3 × 1) + 1.5
Normal value
= 24.5ms
(20 × 1) + (3 × 2) + 1.5
Max. value
= 27.5ms
372
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