Master Station Local Station - Mitsubishi MELSEC-Q Series User Manual

5 DATA LINK PROCESSING TIME
5.2.3 Master station
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local station
(1) Master station (RX)
This indicates the time from the moment the local station CPU device turns ON
(OFF) until the master station CPU device turns ON (OFF).
[Expression]
[Normal value]
(a) Asynchronous mode
SM + LS 2 + SL [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
(Example) When the master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
SM + LS
= 20 + 3
= 36 [ms]
(b) Synchronous mode
(SM n)
SM: Master station sequence program scan time
SL: Local 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 master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
(SM
= (20
= 50 [ms]
[Maximum value]
(a) Asynchronous mode
SM + LS 3 + SL [ms]
SM: Master station sequence program scan time
LS: Link scan time (see Section 5.1)
SL: Local station sequence program scan time
(Example) When the master station sequence scan time is 20 ms, the link scan
time is 3 ms and the local station sequence scan time is 10 ms.
SM + LS
= 20 + 3
= 39 [ms]
local station (RY)
2 + SL [ms]
2 + 10
2 + SL [ms]
n) 2 + SL [ms]
1) 2 + 10
3 + SL [ms]
3 + 10
MELSEC-Q
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