User manual

Publication 1794-UM063A-EN-P - March 2006
2-4 Configurable FLEX I/O Analog Module Features
Data Format
You must choose a module data format in your user program. Formats 8, 9, 10
and 15 are not used. If they are selected for a channel quad, a configuration
fault will occur and will be reported as Diagnostic Data 2. All data for that
channel quad will be set to zero (0).
• Formats 5, 12, 13 and 14 are 2’s complement data formats, and will
return data in that form.
• 12 Formats are available
• Default format is 0 to 20 mA
• The data format selected interprets input readings and returns them to
the PLC
Table 2.3 1794-IE8H Data Formats
Data
Format
Format Resolution Input
Range
Module Data Processing Data Table Value
(Interpretation)
Count
per mA
Error
Steps
0 0…20 mA
as mA
0.1% of
0…20 mA
0…22 mA Datatable = 1000 (input) 0…22000
(0…22.000 mA)
1000 With
error
steps
1 0…20 mA
as %
0.2% of
0…20 mA
0…22 mA 0…11000
(0…110.00%)
500
2 0…20 mA
as √%
0.19% of
0…20 mA
0…22 mA 0…10488
(0…104.88%)
524
3 0…20 mA
as
unsigned
integer
0.03% of
0…20 mA
0…20 mA 0…65535
(0…22 mA)
3276
4 4…20 mA
as mA
0.1% of
4…20 mA
2…22 mA Datatable = 1000 (input) 2000…22000
(2.000…22.000
mA)
1000
Datatable = 10000
input
(
20
)
Datatable = 10000
√
input
20
IF…Square_Root_Threshold
√
input
20
< 10000
Else…datatable = 0
Datatable = 65535
input
(
20
)