Cyclic Transmission Delay Time - Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual

Cyclic transmission delay time

This section shows how to calculate the following cyclic transmission delay time.
• The time between the transmission source CPU module device turning on or off and the transmission destination CPU
module device turning on or off
• The time between data setting in the transmission source CPU module device and the data being stored in the transmission
destination CPU module device
Master station  remote station
When data is transmitted from a remote station (input) to the master station (RX/RWr).
Calculation value
Normal value
Maximum value
■Variable
Name of variable
SM
LS
Rio
n1
Master station  remote station
When data is transmitted from the master station (RY/RWw) to a remote station (output).
Calculation value
Normal value
Maximum value
■Variable
Name of variable
SM
LS
Rio
n2
Master station  local station
When data is transmitted from a local station to the master station as follows:
• Master station (RX)  local station (RY)
• Master station (RWr)  local station (RWw)
Calculation value
Normal value
Maximum value
■Variable
Name of variable
SM
LS
SL
n1
Station-based block data assurance
(SM  1) + (LS  n1) + Rio
(SM  1) + (LS  (n1 + 1)) + Rio
Description
Master station sequence scan time
Communication cycle interval
Processing time of the remote station
Round up the calculated value to the nearest integer of (SM  LS)
Station-based block data assurance
(SM  n2) + (LS  1) + Rio
(SM  n2) + (LS  2) + Rio
Description
Master station sequence scan time
Communication cycle interval
Processing time of the remote station
Round up the calculated value to the nearest integer of (LS  SM)
Station-based block data assurance
If LS < SL: (SM  1) + (LS  (n1 + 1)) + (SL  1)
If LS  SL: (SM  1) + (LS  (n1 + 2))
(SM  2) + (LS  (n1 + 2)) + (SL  1)
Description
Master station sequence scan time
Communication cycle interval
Local station sequence scan time
Round up the calculated value to the nearest integer of (SM  LS)
No station-based block data assurance
(SM  1) + (LS  1) + Rio
(SM  1) + (LS  2) + Rio
Unit
s
s
s

No station-based block data assurance
(SM  1) + (LS  1) + Rio
(SM  2) + (LS  2) + Rio
Unit
s
s
s

No station-based block data assurance
(SM  1) + (LS  2) + (SL  1)
(SM  2) + (LS  3) + (SL  1)
Unit
s
s
s

Appendix 6 Processing Time
A
APPX
213