Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 45)

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%