Appendix 4.4 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×m)+Rd
value
Max. value
(SM×n)+(LS×2×m)+Rd
Calculation
With block guarantee of cyclic data per station
value
Asynchronous mode
Normal
(20×1)+(3×1×3)+1.5
value
= 30.5ms
(20×1)+(3×2×3)+1.5
Max. value
= 39.5ms
App - 48
(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
:
t
:
Rd :
m
:
Expanded cyclic setting
m
Synchronous mode
{(SM×t)×1}+Rd
{(SM×t)×2}+Rd
Calculation example:
Master station sequence scan time of 20ms, link scan time of 3ms, and
the expanded cyclic setting "double".
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.)
LS×m÷SM (Digits the past decimal point are rounded up to
the nearest integer.)
Remote device station processing time
Constant set in the extended cyclic setting
Single
Double
1
3
Without block guarantee of cyclic data per station
Asynchronous mode
SM+(LS×1×m)+Rd
SM+(LS×2×m)+Rd
Without block guarantee of cyclic data per station
Asynchronous mode
20+(3×1×3)+1.5
= 30.5ms
20+(3×2×3)+1.5
= 39.5ms
remote device station (Ver.2
Quadruple
Octuple
7
15
Synchronous mode
{(SM×t)×1}+Rd
{(SM×t)×2}+Rd
Synchronous mode
{(20×1)×1}+1.5
= 21.5ms
{(20×1)×2}+1.5
= 41.5ms
APPENDIXES
App - 48