Mitsubishi Electric MELSEC Q Series Reference Manual page 100

3 SPECIFICATIONS
[W output transmission delay time (T
Remote master station
Link scan time
Remote I/O station
Intelligent function
Remote master station
Link scan time
Remote I/O station
Intelligent function
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DB2
[Remote master station scan time (Sm) > link scan time (LS)]
= (Sm + m) + LS + T
T
DB2
MOV D100 W100
Sm
m
0 E 0
LS
module
[Remote master station scan time (Sm) < link scan time (LS)]
= (Sm + m)
T
DB2
MOV D100 W100
Sm Sm
m
0 E 0
module
Sm : Remote master station scan time
m
: Remote master station link refresh time
LS : Link scan time
T : Intelligent function module buffer memory refresh time
RBF
: Round up the decimal point of the result operation [LS/(Sm + m)]
round up
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)]
= (Sm + m) + LS + T
T
DB2
• [Remote master station scan time (Sm) < Link scan time (LS)]
= (Sm + m) x round up[LS/(Sm + m)] x 2 + LS + T
T
DB2
)] (END synchronization)
[ms]
RBF
Sm Sm
m m
E 0 E 0
LS LS
T
RBF
Buffer memory
T
DB2
round up [LS/(Sm + m)] + LS + T
Sm Sm
m m
E 0 E 0
LS LS
Buffer memory
T
DB2
) is calculated as follows:
DB2
[ms]
RBF
0: 0 step
E: END step
Sm Sm Sm
m m
E 0 E 0
LS LS
[ms]
RBF
0: 0 step
E: END step
Sm Sm
m m
E 0 E 0 E
LS
T
RBF
[ms]
RBF
MELSEC-Q
E
Sm
m
0
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