Rockwell Automation 1797-OE8 FLEX Ex Analog Modules User Manual - Manual (Page 21)

Publication 1797-6.5.1 - May 2005
Understanding Configurable FLEX Ex Analog Module Features 2-5
5 4-20mA as
% 0.16% of
4-20mA 2-22mA -1250 - +11250
(2’s complement)
(-12.50% -
+112.50%) 625 with
error
steps
6 4-20mA
as √%
0.17% of
4-20mA 4-22mA 0-10607
(0-106.07%) 589 with
error
steps,
under-
range not
allowed
7 4-20mA as
unsigned
integer 0.03% of
4-20mA 4-20mA 0-65,535
(4-20mA) 4095 with
error
steps
8 0-20mA not assigned all fixed
9 0-20mA not assigned all fixed
10 0-20mA not assigned all fixed
11 0-20mA as
A/D count 0.04% of
0-20mA 0-22mA 0-55000
(0-22mA) 2500 all fixed
12 4-20mA as
% 0.16% of
4-20mA 3.6-21mA -250 - +10625
(2’s complement)
(-2.50% -
+106.25%) 625 NAMUR
NE 4
all fixed
13 4-20mA
as % 0.16% of
4-20mA 3-21mA -625 - +10625
(2’s complement)
(-6.25% -
+106.25%) 625 all fixed
14 4-20mA
as % 0.16% of
4-20mA 2-22mA -1250 - +11250
(2’s complement)
(-12.50% -
+112.50%) 625 all fixed
15 4-20mA not assigned all fixed
Table 2.3 1797-IE8 and -IE8NF Data Formats
Data
Format Format Resolution Input
Range
Module Data Processing Data Table Value
(interpretation) Count
per mA Error
Steps
datatable = 10,000
input-4 (
16
)
datatable = 10,000
√
input-4
16
IF . . . Square_Root_Threshold
√
input-4
16
< 10,000
Else . . . datatable = 0
datatable = 65,535
input-4 (
16
)
datatable = 55,000
input (
22
)
datatable = 10,000
input-4 (
16
)
datatable = 10,000
input-4 (
16
)
datatable = 10,000
input-4 (
16
)