Mitsubishi QJ71LP21 Reference Manual page 76

3 SPECIFICATIONS
[Y transmission delay time (T
Remote master station
Link scan time
Remote I/O station
Remote master station
Link scan time
Remote I/O station
3 - 35
)]
DY
[Remote master station scan time (Sm) > link scan time (LS)]
= (Sm + αm) + LS + T
T
DY
Remote station sets Y
Y
to on near 0 step.
Sm Sm
αm αm
0 E 0 E
LS
T
DY
[Remote master station scan time (Sm) < link scan time (LS)]
= (Sm + αm) round up [LS/(Sm + αm)] + LS + T
T
DY
Remote station sets Y
Y
to on near 0 step.
Sm Sm
αm αm
0 E 0 E
LS
Sm : Remote master station scan time
αm
: Remote master station link refresh time
LS : Link scan time
T : I/O refresh time
RIOR
: Round up the decimal point of the result operation [LS/(Sm + αm)]
round up
POINT
When the Secured data send/receive setting is enabled, the transmission
delay time (T ) is calculated as follows:
DY
• [Remote master station scan time (Sm) > Link scan time (LS)]
= (Sm + αm) + LS + T
T
DY
• [Remote master station scan time (Sm) < Link scan time (LS)]
= (Sm + αm)
T
DY
[ms]
RIOR
Sm Sm
αm αm
0 E 0 E 0
LS LS
T
RI
OR
ON
Sm Sm
αm αm
0 E 0 E 0
LS
T
DY
[ms]
RIOR
round up[LS/(Sm + αm)]
MELSEC-Q
0: 0 step
E: END step
Sm Sm
αm αm
E 0 E 0
LS LS
[ms]
RIOR
0: 0 step
E: END step
Sm Sm
αm αm
E 0 E 0
LS
T
RI
OR
ON
2 + LS + T
RIOR
Sm
Sm
[ms]
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