Rockwell Automation 1797-OE8 FLEX Ex Analog Modules User Manual - Manual (Page 28)

Publication 1797-6.5.1 - May 2005
2-12 Understanding Configurable FLEX Ex Analog Module Features
Fault Alarm
Fault Alarm selects whether the channel pair fault detection is enabled or
disabled. There is a 100Hz (10ms) filter for wire off/lead break detection.
Use your programming software to set the Fault Alarm. Set the feature bit
to 0 to disable the alarm. Set the bit to 1 to enable wire off/lead break
fault detection.
10 0-20mA 0-20mA not assigned
11 D/A count
as 0-20mA 0.28% of
0-20mA 0-22mA 0-8000
(0-22mA) 363 min=0mA
max=22mA
hold
last=hold
50%=11mA
12 4-20mA not assigned
13 % as
4-20mA 0.16% of
4-20mA 3-21mA -625 - +10625
(2’s complement)
(-6.25% -
+106.25%) 625 min=3mA
max=21mA
hold
last=hold
50%=12mA
14 % as
4-20mA 0.16% of
4-20mA 2-22mA -1250 - +11250
(2’s complement)
(-12.50% -
+112.50%) 625 min=2mA
max=22mA
hold
last=hold
50%=12mA
15 4-20mA 4-20mA not assigned
Table 2.4 1797-OE8 Data Formats
Data
Format Format Resolution Full
Output
Range
Module Data Processing Data Table Value
(Interpretation) Count
per mA Analog Fault
State
output = 22
datatable (
8,000
)
output = 16
datatable (
10,000
)
+ 4
output = 16
datatable (
10,000
)
+ 4