Mitsubishi Electric MELSEC iQ-R Series User Manual page 177

Master station  local station (Ver.1-compatible slave station)
■Master station (RX) (RWr)  local station (RY) (RWw)
This is the time between the device of the CPU module in a local station turning on (off) and the device of the CPU module in
a master station turning on (off).
This is also the time between data set in the device of the CPU module in a local station and the data stored into the device of
the CPU module in a master station.
The following table lists the calculation formulas.
Calculation Station-based block data assurance used
value
Asynchronous with
sequence scan
(SM  n) + (LS  2) + {SL  (k + 1)}
Normal value
(SM  n) + (LS  3) + {SL  (k + 1)}
Max. value
The letters in the table mean as follows.
SM: Master station sequence scan time
LS: Link scan time
SL: Local station sequence scan time
n: LS  SM (The decimal point is rounded up.)
k: LS  SL (The decimal point is rounded up.)
■Master station (RY) (RWw)  local station (RX) (RWr)
This is the time between the device of the CPU module in a master station turning on (off) and the device of the CPU module
in a local station turning on (off).
This is also the time between data set in the device of the CPU module in a master station and the data stored into the device
of the CPU module in a local station.
The following table lists the calculation formulas.
Calculation Station-based block data assurance used
value
Asynchronous with
sequence scan
(SM  n) + (LS  2) + {SL  (k + 1)}
Normal value
(SM  n) + (LS  3) + {SL  (k + 1)}
Max. value
The letters in the table mean as follows.
SM: Master station sequence scan time
LS: Link scan time
SL: Local station sequence scan time
n: LS  SM (The decimal point is rounded up.)
k: LS  SL (The decimal point is rounded up.)
Synchronous with sequence
scan
{(SM  n)  2} + LS + {SL  (k + 1)}
{(SM  n)  3} + LS + {SL  (k + 1)}
Synchronous with sequence
scan
(SM  n) + (LS  2) + {SL  (k + 1)}
(SM  n) + (LS  2) + {SL  (k + 1)}
Station-based block data assurance not used
Asynchronous with Synchronous with
sequence scan sequence scan
SM + (LS  2) + SL {(SM  n)  2} + LS + SL
SM + (LS  3) + SL {(SM  n)  3} + LS + SL
Station-based block data assurance not used
Asynchronous with Synchronous with
sequence scan sequence scan
SM + (LS  2) + SL (SM  n) + (LS  2) + SL
SM + (LS  3) + SL (SM  n) + (LS  2) + SL
Appendix 7 Processing Time
A
APPX
175