Mitsubishi L26CPU-BT, User Manual

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App - 48 App - 48
APPENDIXES
Appendix 4.4 Transmission delay time of master station remote device station (Ver.2
compatible slave station)
(1) Master station (RX) Remote device station (RX), (RWr)
This indicates the time from when a signal is input to a remote device station until
the corresponding CPU device turns ON (OFF) or CPU device data is changed.
[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.)
t : LS×m÷SM (Digits the past decimal point are rounded up to
the nearest integer.)
Rd : Remote device station processing time
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)+Rd {(SM×t)×1}+Rd SM+(LS×1×m)+Rd {(SM×t)×1}+Rd
Max. value (SM×n)+(LS×2×m)+Rd {(SM×t)×2}+Rd SM+(LS×2×m)+Rd {(SM×t)×2}+Rd
Calculation example:
Master station sequence scan time of 20ms, link scan time of 3ms, and
the expanded cyclic setting "double".
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)+1.5
= 30.5ms {(20×1)×1}+1.5
= 21.5ms 20+(3×1×3)+1.5
= 30.5ms {(20×1)×1}+1.5
= 21.5ms
Max. value
(20×1)+(3×2×3)+1.5
= 39.5ms {(20×1)×2}+1.5
= 41.5ms 20+(3×2×3)+1.5
= 39.5ms {(20×1)×2}+1.5
= 41.5ms