Trend Buffer - Metasys - LIT-12011964 - Software Application - System Configuration Tool - 16.0

SCT: System Configuration Tool Help

Brand
Metasys
Product name
System Configuration Tool
Document type
User Guide
Document number
LIT-12011964
Version
16.0
Revision date
2023-10-02
Language
English

The trend buffers reside in the NAE and store the trend samples for the NAE. The number of samples stored in each individual trend buffer is user-configurable (see Trend Extension Attributes). When the buffer gets full, you can choose to have the new trends overwrite the old ones or to have the trending stop. Whether the trends are overwritten or trending stops, you can configure the system to issue an alarm when the buffer gets full. You can also configure to transfer samples to a configured ADS , or OAS.

Table 1 shows the relationship between the buffer size and the sample interval. Determine the sample interval, in seconds, by converting minutes to seconds. Determine the buffer size by examining the interval, in seconds, against the desired time period size to retain data.

Table 1. Buffer Size and Sample Interval Relationship

Interval (Min.)

Interval (Sec.)

Buffer for Previous Time Period

1 Hr.

2 Hrs.

4 Hrs.

8 Hrs.

16 Hrs.

1 Day

2 Days

3 Days

1

60

60

120

240

480

960

1,440

2,880

4,320

2

120

30

60

120

240

480

720

1,440

2,160

5

300

12

24

48

96

192

288

576

864

10

600

6

12

24

48

96

144

288

432

15

900

4

8

16

32

64

96

192

288

30

1,800

2

4

8

16

32

48

96

144

60

3,600

1

2

4

8

16

24

48

72

120

7,200

 

1

2

4

8

12

24

36