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

Cyclic transmission delay time

This section describes transmission delay time (time until data is transmitted).
Master station  remote I/O station
■Master station (RX)  remote I/O station (input)
This is the time between a signal input to a remote I/O station and the device of a CPU module turning on (off).
The following table lists the calculation formulas.
Calculation Station-based block data assurance used
value
Asynchronous with
sequence scan
(SM  n) + (LS  1) + Rio
Normal value
(SM  n) + (LS  2) + Rio
Max. value
The letters in the table mean as follows.
SM: Master station sequence scan time
LS: Link scan time
n: LS  SM (The decimal point is rounded up.)
Rio: Remote I/O response time
■Master station (RY)  remote I/O station (output)
This is the time between the device of a CPU module turning on (off) and the output of a remote I/O station turning on (off).
The following table lists the calculation formulas.
Calculation Station-based block data assurance used
value
Asynchronous with
sequence scan
(SM  n) + (LS  1) + Rio
Normal value
(SM  n) + (LS  2) + Rio
Max. value
The letters in the table mean as follows.
SM: Master station sequence scan time
LS: Link scan time
n: LS  SM (The decimal point is rounded up.)
Rio: Remote I/O response time
APPX
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Appendix 7 Processing Time
Synchronous with
sequence scan
{(SM  n)  1} + Rio
{(SM  n)  2} + Rio
Synchronous with
sequence scan
(SM  n) + (LS  1) + Rio
(SM  n) + (LS  2) + Rio
Station-based block data assurance not used
Asynchronous with
sequence scan
SM + (LS  1) + Rio
SM + (LS  2) + Rio
Station-based block data assurance not used
Asynchronous with
sequence scan
SM + (LS  1) + Rio
SM + (LS  2) + Rio
Synchronous with
sequence scan
{(SM  n)  1} + Rio
{(SM  n)  2} + Rio
Synchronous with
sequence scan
(SM  n) + (LS  1) + Rio
(SM  n) + (LS  2) + Rio