Mitsubishi QJ71LP21 Reference Manual page 78

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
3 - 37
DB2
[Remote master station scan time (Sm) > link scan time (LS)]
= (Sm + αm) + LS + T
T
DB2
MOV D100 W100
Sm
αm
0 E 0
LS
module
[Remote master station scan time (Sm) < link scan time (LS)]
= (Sm + αm)
T
DB2
MOV D100 W100
Sm Sm
αm
0 E 0
module
Sm : Remote master station scan time
αm
: 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 + αm)]
round up
POINT
When the Secured data send/receive setting is enabled, the transmission
delay time (T
DB2
• [Remote master station scan time (Sm) > Link scan time (LS)]
= (Sm + αm) + LS + T
T
DB2
• [Remote master station scan time (Sm) < Link scan time (LS)]
= (Sm + αm) x round up[LS/(Sm + αm)] x 2 + LS + T
T
DB2
)]
[ms]
RBF
Sm Sm
αm αm
E 0 E 0
LS LS
T
RBF
Buffer memory
T
DB2
round up [LS/(Sm + αm)] + LS + T
Sm Sm
αm αm
E 0 E 0
LS LS
Buffer memory
T
DB2
) is calculated as follows:
[ms]
RBF
0: 0 step
E: END step
Sm Sm Sm
αm αm
E 0 E 0
LS LS
[ms]
RBF
0: 0 step
E: END step
Sm Sm
αm αm
E 0 E 0 E
LS
T
RBF
RBF
MELSEC-Q
E
Sm
αm
0
[ms]
3 - 37