Master Station Switching Time; Cyclic Transmission Delay Time - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Master station switching time

The following is the formula to calculate the switching time after the master station is disconnected until the submaster station
starts operating as a master operating station (cyclic data transmission start) when the submaster function is used.
Master station switching time = 520 + Number of connected slave stations  (1.2 + LS) [ms]
LS: Link scan time (value calculated by the link scan time formula with Np and St set to 0)

Cyclic transmission delay time

The following are the formulas to calculate cyclic transmission delay time.
Between the master station and an intelligent device station/remote device station
■Master station (RX, RWr)  Intelligent device station/remote device station (input)
The following time is shown:
• The time between a signal input to the intelligent device station/remote device station and the CPU module device of the
master station turning on or off
• The time between data input to the intelligent device station/remote device station and the data being stored in the CPU
module device of the master station
Calculation Station-based block data assurance
value
Asynchronous with
sequence scan
(SM  1) + (LS  n1) + Rio
Normal value
(SM  1) + (LS  (n1 + 1)) + Rio
Maximum
value
SM: Master station sequence scan time
LS: Link scan time
n1: SM  LS (Round up the calculated value to the nearest integer.)
Rio: Intelligent device station/remote device station processing time ( Manual for the intelligent device station/remote
device station used)
■Master station (RY, RWw)  Intelligent device station/remote device station (output)
The following time is shown:
• The time between the CPU module device of the master station turning on or off and the output of the intelligent device
station/remote device station being turning on or off
• The time between data set to the CPU module device of the master station and the data output to the intelligent device
station/remote device station
Calculation Station-based block data assurance
value
Asynchronous with
sequence scan
(SM  n2) + (LS  1) + Rio
Normal value
(SM  n2) + (LS  2) + Rio
Maximum
value
SM: Master station sequence scan time
LS: Link scan time
n2: LS  SM (Round up the calculated value to the nearest integer.)
Rio: Intelligent device station/remote device station processing time ( Manual for the intelligent device station/remote
device station used)
No station-based block data assurance
Synchronous with Asynchronous with
sequence scan sequence scan
(SM  1) + (LS  1) + Rio (SM  1) + (LS  1) + Rio
(SM  1) + (LS  2) + Rio (SM  1) + (LS  2) + Rio
No station-based block data assurance
Synchronous with Asynchronous with
sequence scan sequence scan
(SM  1) + (LS  1) + Rio (SM  1) + (LS  1) + Rio
(SM  n2) + (LS  1) + Rio (SM  2) + (LS  2) + Rio
Synchronous with
sequence scan
(SM  1) + (LS  1) + Rio
(SM  1) + (LS  2) + Rio
Synchronous with
sequence scan
(SM  1) + (LS  1) + Rio
(SM  n2) + (LS  1) + Rio
APPX
Appendix 7 Processing Time
A
343