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