Mitsubishi QJ71GP21-SX, Reference Manual

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7
- 9 7.3 Cyclic Transmission Delay Time
7.3.2 Transmission delay time calculation example
7
PROCESSING TIME
7.3.2 Transmission delay time calculation example
This section provides a calculation example of the cyclic transmission delay.
(1) Transmission delay time in single network system
(a) System configuration and conditions
(b) Link scan time ( Section 7.1 Link Scan Time)
(c) Link refresh time ( Section 7.2 Link Refresh Time)
Table 7.12 System configuration and conditions
Item Description
CPU module Q06HCPU
Total number of stations per network 8 stations
Total link device points
LB/LW 1024 points for each
LX/LY 0 point
SB/SW 512 points for each
Sequence scan time 1ms
File register None
Interlink transfer None
Transient transmission None
Station-based block data assurance Assured
CC-Link IE controller network module Installed to slot 0 of main base unit
Faulty station None
LS = [KB + (N × 56) + {LB + LY + (LW × 16) 8 × 0.016
+ (N
T
× T × 30)] 1000 + Nc [ms]
= [1100 + (8 × 56) + {1024 + 0 + (1024 × 16)} 8 × 0.016
+ (0 × 2 × 30)] 1000
= 1.58 [ms]
(1)Sending-side link refresh time, receiving-side link refresh time
T, R = 0.13 + 0.41 × 10
-3
× {(1024 + 0 + 0 + 512) 16 + 1024 + 512} + 0 + 0
= 0.80 [ms]