Mitsubishi Electric Q12DCCPU-V User Manual page 215

5
ACCESS VIA NETWORK MODULES
(b) Transmission delay time calculation example
Item
CPU on receiving station
Total number of stations per network
Total link device points
Link device refresh cycle
Transient transmission
Block data assurance per station
CC-Link IE controller network module
Faulty station
Calculated
value
Normal
(L
T
value
(100 + 1.39)
(L
T
Max. value
(100 + 1.39)
The following shows a calculation example for cyclic transmission delay time in a
single network system.
(System configuration and conditions)
Table 5.13 System configuration and conditions
LB/LW
LX/LY
SB/SW
1) Link device refresh time
Total link device refresh time
Total link device refresh time on sending side
1.0 0.36 10
T
1.39(ms)
Total link device refresh time on receiving side
1.39(ms)
R
2) Link scan time
Link scan time LS
[KB + (n 56) + {LB + LY + (LW 16)}
+ (N
T
[1100 + (2 56) + {1024 + 0 + (1024 16)}
+ (0 2 30)]
1.25(ms)
* 1 For details of the link scan time, refer to the MELSEC-Q CC-Link IE Controller Network Reference
Manual.
3) Cyclic transmission delay
Table 5.14 Example of transmission delay time calculation
Transmission delay when L
Block data assurance per station enabled
+ ) 1.5 + LS 0.5 + (L
T
1.5 + 1.25 0.5 + (100 + 1.39)
+ ) 2 + LS 1 + L +
T R
2 + 1.25 1 + 100 + 1.39 = 305.42[ms]
5.4 CC-Link IE Controller Network Module Access Function
5.4.5 Link data transfer processing time specifications
Description
C Controller module
2 (Control station: 1, Normal station: 1)
1024 points
0 points
0 points
100ms
None
Enabled
Installed to Slot 0 of main base unit
None
KM1 KM2
1024 0 0
-3
1024
1
*1
T 30)] 1000 + N
C
1000
>
LS [ms]
T
+ ) 0.5
R R
0.5 = 203.405[ms]
R
LB LX LY
LW
16
8 0.016
8 0.016
5
1
2
3
4
5
6
7
8
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