Справочник Пользователя для Mitsubishi Electronics A1SJ61BT11
5 - 19
5 DATA LINK PROCESSING TIME
MELSEC-QnA
(b) For writing
MB = [SL + LS × 2 + {(No. of writing points + 16)/16}
1
× LS +
α
+ SM + LS × 2 +
β + constant bps] × N [ms]
SM : Master station sequence scan time
SL : Local station sequence scan time
LS : Link scan time (Refer to section 5.2)
α : Send end internal processing time
SL : Local station sequence scan time
LS : Link scan time (Refer to section 5.2)
α : Send end internal processing time
No. of writing points
1 to 120 points
121 to 240 points
241 to 360 points
361 to 480 points
α
LS
LS × 2
LS × 3
LS × 4
β : Receive end internal processing time
LS
[Constant bps]
Transmission speed
156kbps
625kbps
2.5Mbps
5Mbps
10Mbps
constant bps
LS
LS × 2
LS × 4
LS × 6
LS × 7
N : No. of execution instructions simultaneously
1 : Raise the decimals to a unit
(Example) When master station sequence scan time is 10ms, local station sequence
scan time is 10ms, link scan time is 5ms, no. of writing points is 20 words,
transmission speed is 10Mbps, no. of execution instructions simultaneously
is 1
transmission speed is 10Mbps, no. of execution instructions simultaneously
is 1
MB = [SL + LS × 2 + {(No. of writing points + 16)/16}
1
× LS +
α
+ SM + LS × 2 +
β + constant bps] × N
= [10 + 5 × 2 + {(20 + 16)/16} × 5 + 5 + 10 + 5 × 2 + 5 + 5 × 7] × 1
= [10 + 5 × 2 + 3 × 5 + 5 + 10 + 5 × 2 + 5 + 5 × 7] × 1
= 100 [ms]
= [10 + 5 × 2 + 3 × 5 + 5 + 10 + 5 × 2 + 5 + 5 × 7] × 1
= 100 [ms]