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Chapter 2 Specification of Communication port for CPU module

2 – 27

[About Task code processing time]

In EHV-CPU, Task code communication is executed when Control Editor is connected in Online mode and the

indicator such as a touch panel is connected. Processing time of task code changes according to I/O points to be

monitored. A relation between I/O points to be monitored and task code is shown below. (Task code transmission

interval is 110ms according to an original measurement conditions.)

Processing time of task code can be expressed as follows.

[Task code processing time] = 0.1 × [I/O monitor points] + 5.0 [ms]

But, when task code communication is executed using several ports, it takes processing time for used ports.

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

0 50 100 150 200 250

Number of Monitor Word I/O points

Task code processing time [ms]

Figure 2.26 Monitor I/O points and Task code processing time

[About ASR communication time]

Processing time of ASR transmission depends on transmitted I/O points. A relation between transmitted I/O points

and ASR processing time is shown below.

Processing time of ASR transmission is expressed as follows.

[ASR transmission processing time] = 0.0066 × [Number of transmitted words] + 3.7 [ms]

But, when ASR transmission is executed using several ports, it takes processing time for used ports.

3.0

4.0

5.0

6.0

7.0

8.0

9.0

0 100 200 300 400 500 600 700

Number of ASR transmission words

ASR transmission processing time (Max.) [ms]

Figure 2.27 Monitor I/O points and Task code processing time

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 66 67

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RTS WM300 Especificaciones Pagina 41