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Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual User Manual

Page 45

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Publication 1797-6.5.3 - March 2006

Understand Configurable FLEX Ex Analog Module Features 2-15

Table 2.11 Data Format - Write Words 0 and 1

Table 2.12 Error Level 0.1mA Steps

Bits

Description

Word 0

04 03 02 01 Data format for channels 0…3

Word 1

04 03 02 01 Data format for channels 4…7

0

0

0

0

0…22 mA, w/error steps (default)

0

0

0

1

0…22 mA = 0…110%, w/error steps

0

0

1

0

0…22 mA = 0…104.8%, square root, w/error steps

0

0

1

1

0…22 mA = 0…65,535, unsigned integer, w/error
steps

0

1

0

0

2…22 mA, w/error steps

0

1

0

1

2…22 mA = -12.5…112.5%, w/error steps

0

1

1

0

4…22 mA = 0…106%, square root, w/error steps

0

1

1

1

4…20mA = 0…65,535, unsigned integer, w/error steps

1

0

0

0

Not assigned

1

0

0

1

Not assigned

1

0

1

0

Not assigned

1

0

1

1

0…22 mA = A/D count, w/fixed error

1

1

0

0

3.6…21 mA = NAMUR NE 43, w/fixed error

1

1

0

1

3…21 mA = -6.25…106.28% w/fixed error

1

1

1

0

2…22 mA = -12.5…112.5% w/fixed error

1

1

1

1

Not assigned

Bits

Description

Word 0

13 12 11 10 9

Error level channels 0…3

Word 1

13 12 11 10 9

Error level channels 4…7

0

0

0

0

0

Disabled

0.1 mA * step value = remote fault alarm threshold

Examples

Data
Format
2…22
mA
-12.5…
112.5%

0

0

1

1

1

Step 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%

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