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MELSEC-Q
3 SPECIFICATIONS
[Y transmission delay time (T
DY)] (END synchronization)
[Remote master station scan time (Sm) > link scan time (LS)]
T
DY = (Sm + m)
+
LS + TRIOR [ms]
LSLS
LS LS LS
T
DY
Y
The remote master station sets Y
to on near 0 step.
ON
TRI
OR
Remote master station
Link scan time
Remote I/O station
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0
Sm
0: 0 step
E: END step
[Remote master station scan time (Sm) < link scan time (LS)]
T
DY = (Sm + m) round up [LS/(Sm + m)] + LS + TRIOR [ms]
Y
The remote master station sets Y
to on near 0 step.
LS
ON
LS
LS
Remote master station
Link scan time
Remote I/O station
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0
Sm
0: 0 step
E: END step
T
DY
T
RI
OR
Sm
m
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 + m)]
POINT
When the "Block send/receive data assurance per station" box is checked, the
transmission delay time (T
DY) is calculated as follows:
• [Remote master station scan time (Sm) > Link scan time (LS)]
T
DY = (Sm + m) + LS + TRIOR [ms]
• [Remote master station scan time (Sm) < Link scan time (LS)]
T
DY = (Sm + m) round up[LS/(Sm + m)] 2 + LS + TRIOR [ms]