Mitsubishi MELSEC Q Series User Manual page 129

5 DATA LINK PROCESSING TIME
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(Example) When the sequence scan time for the master station is 20 ms, the link scan
time is 3 ms and the remote device station processing time is 1.5 ms.
(SM
= (20
= 21.5 [ms]
[Maximum value]
(a) Asynchronous mode
SM + LS 2 + Remote device station processing time [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
(Example) When the sequence scan time for the master station is 20 ms, the link scan
time is 3 ms and the remote device station processing time is 1.5 ms.
SM + LS
= 20 + 3
= 27.5 [ms]
(b) Synchronous mode
(SM n)
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
n: (LS/SM)value when fractions following the decimal point are
rounded up to the next whole number
(Example) When the sequence scan time for the master station is 20 ms, the link scan
time is 3 ms and the remote device station processing time is 1.5 ms.
(SM
= (20
= 41.5 [ms]
(2) Master station (RY)
This indicates the time from the moment the CPU device turns ON (OFF) until
the remote device station output turns ON (OFF).
[Expression]
[Normal value]
(a) Asynchronous mode
SM + LS 1 + Remote device station processing time [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
(Example) When the sequence scan time for the master station is 20 ms, the link scan
time is 3 ms and the remote device station processing time is 1.5 ms.
SM + LS
= 20 + 3
= 24.5 [ms]
n) 1 + Remote device station processing time [ms]
1) 1 + 1.5
2 + Remote device station response time [ms]
2 + 1.5
2 + Remote device station processing time [ms]
n) 2 + Remote device station processing time [ms]
1) 2 + 1.5
remote device station (RY)
1 + Remote device station processing time [ms]
1 + 1.5
MELSEC-Q
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