392
APPX
Appendix 7 Processing Time
Performance list of simple CPU communication function
The following shows the performance of the execution interval (simple CPU communication function). The execution interval
varies depending on the number of settings, the number of communication points, and the scan time of the CPU module. The
interval is also affected by the execution conditions of other functions or Ethernet communication condition.
Condition
• Communication setting: "Fixed"
• Sequence scan time (own station) =: 1ms (scan time before the execution of simple CPU communication function)
• Communication destination: MELSEC iQ-R (built-in Ethernet)
• Sequence scan time (communication destination): 1ms (any model)
• Device data: Bit device = M, Word device = D
• The number of settings is as shown in the table (1, 8, 16, 32, and 64) and all settings are for the different communication
destinations (not for the same destination).
• The retry of communication is not performed.
*1 Number of points for each device (bit device and word device)
*2 The larger the number of settings for the same communication destination is, the longer the execution interval becomes, and it becomes
up to eight times longer.
Communication
pattern
Number of communication points for
one setting
Processing time by the number of settings (unit: ms)
1 8
*2
16
*2
32
*2
64
*2
Read 32 words for each device
*1
(Total 64 words)
10 11 17 34 76
64 words for each device
*1
(Total 128 words)
10 11 17 35 77
256 words for each device
*1
(Total 512 words)
10 13 20
Write 32 words for each device
*1
(Total 64 words)
10 11 18 35 77
64 words for each device
*1
(Total 128 words)
10 11 18 35 80
256 words for each device
*1
(Total 512 words)
10 13 20
To Next Page
Loading...
