Error level 0.1 ma steps – Rockwell Automation 1797-IE8NF FLEX Ex 8 Input Analog, HART and Noise Filter Module User Manual

Page 24

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24 FLEX Ex 8 Input Analog, HART, and Noise Filter Analog Modules

Publication

1797-5.5 - September 2011

6

0 1 1 0 4…20 mA as

%

4.00

22.00

0

(0%)

10607

(106.07%)

0.17% of
4...20 mA

7

0 1 1 1 4…20 mA as

unsigned
integer

4.00

20.00

0

(4 mA)

65535

(20 mA)

0.03% of
4...20 mA

8

1 0 0 0 Not assigned

9

1 0 0 1

10

1 0 1 0

11

1 0 1 1 0...20 mA as

A/D count

0.00

22.00

0

(0 mA)

55000

(22 mA)

0.04% of
0...20 mA

12

1 1 0 0 4...20 mA as

%

3.60

21.00

-250

(-2.50%)

10625

(106.25%)

0.16% of
4...20 mA

13

1 1 0 1 4...20 mA as

%

3.00

21.00

-625

(-6.25%)

10625

(106.25%)

0.16% of
4...20 mA

14

1 1 1 0 4...20 mA as

%

2.00

22.00

-1250

(-12.50%)

11250

(112.50%)

0.16% of
4...20 mA

15

1 1 1 1 Not assigned

Error Level 0.1 mA Steps

Word

Bits

Description

Word 0

13

12

11

10

09

Error level channels 0...3

Word 1

13

12

11

10

09

Error level channels 4...7

0

0

0

0

0

Disabled

0.1 mA * binary valve = remote fault alarm

Examples

Data Format
2...22 mA
-12.5...112.5%

0

0

1

1

1

Binary value = 7, 0.1 mA * 7 = 0.7 mA

Remote fault alarm at -4.38% or +104.38%

0

1

1

1

1

Binary value = 15, 0.1 mA * 15 = 1.5 mA

Remote fault alarm at -9.38% or + 109.38%

Data Format - Write Words 2 and 3 (Continued)

Data
Format

Bits

Format

Signal Range User Range

Resolution

15 14 13 12

11 10 9

8

7

6

5

4

LO

HI

LO

HI

3

2

1

0

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