Valid conversion value retention (Address "6")

Valid conversion value retention (Address "6")

Address

Function

R/W

Hex

Dec

06H

6

Valid conversion value retention

R/W

 

Bits

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

CH16

CH15

CH14

CH13

CH12

CH11

CH10

CH9

CH8

CH7

CH6

CH5

CH4

CH3

CH2

CH1

0 : Disable / 1 : Enable

 

In case of 8-channel module, b8~b15(CH9. ~ CH.16) are not used.
This is a feature to retain the last value if the latest A/D measured value exceeds the valid range.
Example : When ‘Unsigned’ format (0~16000) and input signal range is 4~20mA, if the input current goes from 12mA to 3mA

Measure count

1

2

3

4

5

6

7

Measured Value

8,000
(12 mA)

8,000
(12 mA)

8,000
(12 mA)

4,000
(8mA)

Negative Value
(3 mA)

Negative Value
(3 mA)

Negative Value
(3 mA)

Output

8,000

8,000

8,000

4,000

4,000

4,000

4,000

Note

Normal

Normal

Normal

Normal

Retains last value

Retains last value

Retains last value

  • The table above is just an example to describe "Valid conversion value retention" feature. The retained value may vary according to the time spent and the sampling speed when the value switched from 12mA to 3mA.