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MELSEC-Q
3 SPECIFICATIONS
2) In the case of END asynchronization
[X transmission delay time (T
DX)] (END asynchronization)
[Remote master station scan time (Sm) > link scan time (LS)]
T
DX = Sm + m + Sm + TRIOR [ms]
0E
m
Sm
TDX
ON
X
TRIOR
LS
The master station
confirms the X attached
near the end step
0: 0 step
E: END step
Remote master station
Link scan time
Remote I/O station
LS LS LS LS LS LS
0E
m
Sm
0E
m
Sm
0E
m
Sm
0E
m
Sm
0E
Sm
[Remote master station scan time (Sm) < link scan time (LS)]
T
DX = LS 2 + Sm + m + Sm + TRIOR [ms]
ON
X
TRIOR
The master station
confirms the X attached
near the end step
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
LS LS LS
0: 0 step
E: END step
Remote master station
Link scan time
Remote I/O station
T
DX
Sm
m
LS
T
RIOR
: Remote master station scan time
: Remote master station link refresh time
: Link scan time
: I/O refresh time
POINT
When the "Block send/receive data assurance per station" box is checked, the
transmission delay time (T
DX) is calculated as follows:
• Remote master station scan time (Sm) > Link scan time (LS)
T
DX = (Sm+m) 2 + Sm + TRIOR + LS [ms]
• Remote master station scan time (Sm) < Link scan time (LS)
T
DX = LS
3 + Sm + m + Sm + T
RIOR [ms]