Appendix 4.2 Transmission Delay Time Of Master Station <-> Remote I/O Station - Mitsubishi Electric L26CPU-BT User Manual

Appendix 4.2
(1) Master station (RX)  Remote I/O station (input)
This indicates the time from the moment a signal is input to a remote I/O station until the corresponding CPU
device turns ON (OFF).
(a) Expression
The meanings of symbols in the table are as follows:
• SM : Master station sequence scan time
• LS : Link scan time
• n: LS  SM (Digits past the decimal point are rounded up to the nearest integer.)
• Rio: Remote I/O response time
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(SM  n) + (LS  1) + Rio
Normal value
(SM  n) + (LS  2) + Rio
Max. value
(b) Calculation example
Master station sequence scan time of 20ms, link scan time of 3ms, and remote I/O response time of 1.5ms
With block guarantee of cyclic data per station
Calculation
value
Asynchronous mode
(20  1) + (3  1) + 1.5 = 24.5ms
Normal value
(20  1) + (3  2) + 1.5 = 27.5ms
Max. value
Transmission delay time of master station <->
remote I/O station
Synchronous mode
{(SM  n)  1} + Rio
{(SM  n)  2} + Rio
Synchronous mode
{(20  1)  1} + 1.5 = 21.5ms
{(20  1)  2} + 1.5 = 41.5ms
Without block guarantee of cyclic data per station
Asynchronous mode
SM + (LS  1) + Rio {(SM  n)  1} + Rio
SM + (LS  2) + Rio {(SM  n)  2} + Rio
Without block guarantee of cyclic data per station
Asynchronous mode
20 + (3  1) + 1.5 = 24.5ms {(20  1)  1} + 1.5 = 21.5ms
20 + (3  2) + 1.5 = 27.5ms {(20  1)  2} + 1.5 = 41.5ms
APPENDICES
Synchronous mode
Synchronous mode
435
A