Mitsubishi Electric MELSEC iQ-R Series User Manual page 178

Melsec iq-r cc-link system master/local module
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Master station  local station (Ver.2-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  {(1  m) + 1}] + {SL  (k + 1)}
Normal value
(SM  n) + [LS  {(2  m) + 1}] + {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.)
t: LS  m  SM (The decimal point is rounded up.)
k: LS  SL (The decimal point is rounded up.)
m: Constant according to the extended cyclic setting
Extended cyclic setting
m
■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  {(1  m) + 1}] + {SL  (k + 1)}
Normal value
(SM  n) + [LS  {(2  m) + 1}] + {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.)
t: LS  m  SM (The decimal point is rounded up.)
k: LS  SL (The decimal point is rounded up.)
m: Constant according to the extended cyclic setting
Extended cyclic setting
m
Master station  intelligent device station
Transmission delay time between a master station and an intelligent device station varies depending on the intelligent device
station.
Refer to the user's manual for the intelligent device module used.
APPX
176
Appendix 7 Processing Time
Single
Double
1
3
Single
Double
1
3
Synchronous with
sequence scan
{(SM  t)  2} + {SL  (k + 1)}
{(SM  t)  3} + {SL  (k + 1)}
Quadruple
7
Synchronous with
sequence scan
{(SM  t)  1} + {SL  (k + 1)}
{(SM  t)  2} + {SL  (k + 1)}
Quadruple
7
Station-based block data assurance not used
Asynchronous with
sequence scan
SM + [LS  {(1  m) + 1}] + SL
SM + [LS  {(2  m) + 1}] + SL
Octuple
15
Station-based block data assurance not used
Asynchronous with
sequence scan
SM + [LS  {(1  m) + 1}] + SL
SM + [LS  {(2  m) + 1}] + SL
Octuple
15
Synchronous with
sequence scan
(SM  t)  2
(SM  t)  3
Synchronous with
sequence scan
{(SM  t)  1} + SL
{(SM  t)  2} + SL

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