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MELSEC-Q
3 SPECIFICATIONS
[W output transmission delay time (T
DB2)] (END asynchronization)
[Remote master station scan time (Sm) > link scan time (LS)]
T
DB2 = (Sm + m) + LS 2 + TRBF [ms]
TRBF
T
DB2
0: 0 step
E: END step
MOV D100 W100
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
LS LS LS LS LS LS
Buffer memory
Intelligent function
module
Remote master station
Link scan time
Remote I/O station
[Remote master station scan time (Sm) < link scan time (LS)]
T
DB2 = (Sm + m) + LS 2 + TRBF [ms]
TRBF
TDB2
Buffer memory
MOV D100 W100
0: 0 step
E: END step
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
m
0E
Sm
LS LS LS
Intelligent function
module
Remote master station
Link scan time
Remote I/O station
Sm
m
LS
T
RBF
: Remote master station scan time
: Remote master station link refresh time
: Link scan time
: Intelligent function module buffer memory refresh time
POINT
When the "Block send/receive data assurance per station" box is checked, the
transmission delay time (T
DB1) is calculated as follows:
• Remote master station scan time (Sm) > Link scan time (LS)
T
DB2 = (Sm + m) 2 + LS 2 + TRBF [ms]
• Remote master station scan time (Sm) < Link scan time (LS)
T
DB2 = (Sm + m) + LS 3 + TRBF [ms]