Attached File Transfer TimesSection 3-7

3-7

Attached File Transfer Times

 

 

 

 

When sending an attached file with the Mail Receive Function, the access

 

 

time can be as long as 30 or 40 minutes for a very large file. The following

 

 

tables show how long the CPU Unit's memory will be accessed by the Ether-

 

 

net Unit (how long the Accessing Memory/Receiving Mail Flag will be ON).

Access Times for CS1 and

 

 

 

 

 

CJ1 CPU Units

 

 

 

 

 

Command

 

Data size

CPU Unit's operating mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROGRAM

RUN

 

 

 

 

 

 

 

 

 

 

 

 

---

10 ms cycle time

 

 

 

 

 

 

 

 

 

FileWrite

1

KB

0.3 s

1.6 s

 

 

 

 

 

 

 

 

 

10 KB

1.5 s

9.3 s

 

 

 

 

 

 

 

 

 

100 KB

13.7 s

90.4 s

 

 

 

 

 

 

 

 

 

 

1

MB

160.1 s

1125.4 s

 

 

 

 

 

 

 

 

 

FileRead

1

KB

0.2 s

0.9 s

 

 

 

 

 

 

 

 

 

10 KB

1.0 s

6.3 s

 

 

 

 

 

 

 

 

 

100 KB

9.2 s

65.9 s

 

 

 

 

 

 

 

 

 

 

1

MB

135.2 s

1132.0 s

 

 

 

 

 

 

 

 

IOMWrite

1 word

0.1 s

0.1 s

 

 

 

 

 

 

 

 

 

6,000 words

0.2 s

0.3 s

 

 

 

 

 

 

 

 

IOMRead

1 word

0.1 s

0.1 s

 

 

 

 

 

 

 

 

 

6,000 words

0.2 s

0.3 s

Access Times for CS1-H

 

 

 

 

 

 

 

 

 

 

and CJ1-H CPU Units

 

 

 

 

 

Command

 

Data size

CPU Unit's operating mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROGRAM

RUN

 

 

 

 

 

 

 

 

 

 

 

 

---

10 ms cycle time

 

 

 

 

 

 

 

 

 

FileWrite

1

KB

0.2 s

0.4 s

 

 

 

 

 

 

 

 

 

10 KB

0.9 s

2.6 s

 

 

 

 

 

 

 

 

 

100 KB

9.0 s

25.7 s

 

 

 

 

 

 

 

 

 

 

1

MB

90.5 s

302.8 s

 

 

 

 

 

 

 

 

 

FileRead

1

KB

0.1 s

0.3 s

 

 

 

 

 

 

 

 

 

10 KB

0.4 s

1.8 s

 

 

 

 

 

 

 

 

 

100 KB

4.0 s

17.8 s

 

 

 

 

 

 

 

 

 

 

1

MB

48.4 s

272.0 s

 

 

 

 

 

 

 

 

IOMWrite

1 word

0.1 s

0.1 s

 

 

 

 

 

 

 

 

 

6,000 words

0.1 s

0.2 s

 

 

 

 

 

 

 

 

IOMRead

1 word

0.1 s

0.1 s

 

 

 

 

 

 

 

 

 

6,000 words

0.1 s

0.2 s

 

 

 

 

 

 

 

Note (1) The access times for FileWrite and FileRead commands indicate Memo- ry Card access times.

(2)The access times in the tables above are standard times when the PLC Setup's "Fixed Peripheral Servicing Time" setting is set to the default val- ue of 4% of the cycle time.

(3)The attached file transfer time can be reduced by increasing the time al- lowed for peripheral servicing in the PLC Setup's "Fixed Peripheral Ser- vicing Time" setting.

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Image 86
Omron CJ1W-ETN21 operation manual Access Times for CS1 CJ1 CPU Units, Access Times for CS1-H CJ1-H CPU Units