Mitsubishi Electric MELSEC Q Series Reference Manual page 101

3 SPECIFICATIONS
[X 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 - 45
2) In the case of END asynchronization
)] (END asynchronization)
DX
[Remote master station scan time (Sm) > link scan time (LS)]
= Sm + m + Sm + T
T
DX
Sm Sm
m
0 E 0
LS LS
T
RIOR
ON
[Remote master station scan time (Sm) < link scan time (LS)]
2 + Sm + m + Sm + T
T = LS
DX
Sm Sm
m
0 E 0
LS
T
RIOR
ON
Sm : Remote master station scan time
m
: Remote master station link refresh time
LS : Link scan time
T : I/O refresh time
RIOR
POINT
When the "Block send/receive data assurance per station" box is checked, the
transmission delay time (T
• Remote master station scan time (Sm) > Link scan time (LS)
T = (Sm+m) 2 + Sm + T
DX
• Remote master station scan time (Sm) < Link scan time (LS)
3 + Sm + m + Sm + T
T = LS
DX
[ms]
RIOR
The master station
confirms the X attached
near the end step
Sm Sm
m m
E 0 E 0 E
LS LS LS
T
DX
[ms]
RIOR
The master station
confirms the X attached
near the end step
Sm Sm
m m
E 0 E 0 E
LS
T
DX
) is calculated as follows:
DX
+ LS [ms]
RIOR
[ms]
RIOR
MELSEC-Q
X
Sm Sm
m m
0 E 0 E
LS LS
0: 0 step
E: END step
X
Sm Sm
m m
0 E 0 E
LS
0: 0 step
E: END step
3 - 45