Yokogawa JUXTA VJ Series Limit Alarms Instrukcja Użytkownika Pobierz pdf (Strona 54)

6-4

IM 77J01J11-01E 3rd Edition : Oct. 15, 2007-00

● D0002, D0003: INPUT1_L, INPUT1_H (input value: engineering unit)

D0002 shows a numeric value and D0003 shows the number of digits below the decimal

point.

mA, mV, V

Number of digits

belowdecimal point

Input Units

⬚C, K

060301E.EPS

● D0004: input value (ratio of input value to input span is indicated as a

percentage)

● D0008: output value (percentage indication)

Example 1: When the input value (engineering unit) is 680.0 °C for VJU7 (universal

temperature converter), thermocouple input, and type K (input range: 0 to

1000°C):

D0002: input value (engineering unit)

Contents of D registers Internal value

D0004: input value (%) 02A8 (=680)

1A90 (=6800)

D0008: output value (%) 02A8 (=680)

68.0 (%)

D0003: input value (engineering unit),

number of digits below decimal point

0001 (=1)

680.0 (⬚C)

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Example 2: Representation of negative values

When the input value (engineering unit) is -10.5 °C in the same conditions

as above:

D0002: input value (engineering unit)

Contents of D registers Internal value

D0004: input value (%) FFF5 (= -11)

FF97 (= -105)

D0008: output value (%) FFF5 (= -11)

-1.1 (%)

D0003: input value (engineering unit),

number of digits below decimal point

0001 (=1)

-10.5 (⬚C)

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● D0014, D0015: Alarms 1 and 2 ("1" when on or "0" when off)

● D0041 to D0064: Revision, revision of menu table, tag number 1,

tag number 2, comment 1, and comment 2

One D register indicates two letters in the ASCII code.

For example, if D0049 to D0052 contain a tag called "YOKOGAWA," each D register

shows two letters as follows:

59 4F

D0049

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Y O

4B 4F

D0050

K O

47 41

D0051

G A

57 41

D0052

W A

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 60

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