Mitsubishi L26CPU-BT, Руководство пользователя

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App - 53 App - 53
APPENDIXES
(2) Master station (RY) Local station (RX), Master station (RWw)
Local station (RWr)
This indicates the time from the moment a master station CPU device turns ON
(OFF) until the corresponding local station CPU device turns ON (OFF).
Or, it indicates the time from when data is set to a master station CPU device
until the data is stored to the corresponding local station CPU device.
[Expression]
The meanings of symbols in the table are as follows:
SM : Master station sequence scan time
LS : Link scan time
SL : Local station sequence scan time
n : LS÷SM (Digits past the decimal point are rounded up to the
nearest integer.)
t : LS x m÷SM (Digits past the decimal point are rounded up to the
nearest integer.)
k : LS÷SL (Digits past the decimal point are rounded up to the nearest
integer.)
m : Constant set in the extended cyclic setting
Expanded cyclic
setting
Single Double Quadruple Octuple
m 1 3 7 15
With block guarantee of cyclic data per station Without block guarantee of cyclic data per station Calculation
value
Asynchronous mode Synchronous mode Asynchronous mode Synchronous mode
Normal
value
(SM×n) + [LS×{(1×m)
+1}]+{SL×(k+1)} {(SM×t)×1}+{SL×(k+1)} SM+ [LS×{(1×m) +1}]+SL {(SM×t)×1}+SL
Max. value
(SM×n) + [LS×{(2×m)
+1}]+{SL×(k+1)} {(SM×t)×2}+{SL×(k+1)} SM+ [LS×{(2×m) +1}]+SL {(SM×t)×2}+SL
Calculation example:
Master station sequence scan time of 20ms, link scan time of 3ms,
expanded cyclic setting "double", and local station sequence scan time
of 10ms
With block guarantee of cyclic data per station Without block guarantee of cyclic data per station Calculation
value
Asynchronous mode Synchronous mode Asynchronous mode Synchronous mode
Normal value
(20×1) + [3×{(1×3)
+1}]+{10×(1+1)}
=52ms {(20×1)×1}+{10×(1+1)}
=40ms 20+ [3×{(1×3) +1}]+10
=42ms {(20×1)×1}+10
=30ms
Max. value
(20×1) + [3×{(2×3)
+1}]+{10×(1+1)}
=61ms {(20×1)×2}+{10×(1+1)}
=60ms 20+ [3×{(2×3) +1}]+10
=51ms {(20×1)×2}+10
=50ms