Appendix 4.3 Transmission delay time of master station
compatible slave station)
Calculation
With block guarantee of cyclic data per station
value
Asynchronous mode
Normal
(SM×n)+(LS×1)+Rd
value
Max. value
(SM×n)+(LS×2)+Rd
Calculation
With block guarantee of cyclic data per station
value
Asynchronous mode
Normal
(20×1)+(3×1)+1.5
value
= 24.5ms
(20×1)+(3×2)+1.5
Max. value
= 27.5ms
App - 46
(1) Master station (RX)
This indicates the time from when a signal is input to a remote device station until
the corresponding CPU device turns ON (OFF) or CPU device data is changed.
[Expression]
The meanings of symbols in the table are as follows:
SM :
LS :
n
:
Rd :
Synchronous mode
{(SM×n)×1}+Rd
{(SM×n)×2}+Rd
Calculation example:
Master station sequence scan time of 20ms, link scan time of 3ms, and
remote device station processing time of 1.5ms
Synchronous mode
{(20×1)×1}+1.5
= 21.5ms
{(20×1)×2}+1.5
= 41.5ms
Remote device station (RX), (RWr)
Master station sequence scan time
Link scan time
LS÷SM (Digits past the decimal point are rounded up to the
nearest integer.)
Remote device station processing time
Without block guarantee of cyclic data per station
Asynchronous mode
SM+(LS×1)+Rd
SM+(LS×2)+Rd
Without block guarantee of cyclic data per station
Asynchronous mode
20+(3×1)+1.5
= 24.5ms
20+(3×2)+1.5
= 27.5ms
remote device station (Ver.1
Synchronous mode
{(SM×n)×1}+Rd
{(SM×n)×2}+Rd
Synchronous mode
{(20×1)×1}+1.5
= 21.5ms
{(20×1)×2}+1.5
= 41.5ms
APPENDIXES
App - 46