Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 44)

Publication 1794-UM065B-EN-E - September 2010
32 1794-IF8IH and 1794-OF8IH Configuration
1794-IF8IH I/O Profile
All Allen Bradley FLEX I/O modules have a sixteen word table of Real Time
Data (RTD) to be transferred between the controller and the I/O module.
Not all 16 words need be allocated. The IF8IH has the following RTD IO
Profile:
In addition to the RTD, the module uses EDT for Configuration and HART
data. The IF8IH has the following EDT IO Profile:
Configuration Parameters
The configuration is shown in the table below. These are normal module
configuration items and are sent to the module. Configuration is located at
EDT assembly 37.
RTD Index Assembly/Index Asembly
RTD 0 MSW Module Status Word
RTD 1 EDT Read Word EDT Read Word
RTD 2…9 I:0…I:7 RTD Input Data
RTD 10…14 S:0…14 RTD Input Data
RTD 15 EDT Write Word EDT Write Word
Nunmber of Word EDT Assembly
42 EDT Configuration Data
98 Cyclic EDT HART Input Data (Accessed in eight 24 byte Assemblies)
48 EDT Output Pass-Through message request buffer A
48 EDT Output Pass-Through message request buffer B
48 EDT Input Pass-Through message request buffer A
48 EDT Input Pass-Through message request buffer B
Configuration Parameters
Word Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 R R F7 F6 F5 F4
BOB
(1) R R F3 F2 F1 F0
BOA
(1)
1 DH7 DH6 DH5 DH4 DH
3 DH2 DH1 DH0
Reserved
(2)
2 CH 3 Format CH 2 Format CH 1 Format CH 0 Format
3 CH 7 Format CH 6 Format CH 5 Format CH 4 Format
4 CH1 HART Current Ratio FLTR1 CH0 HART Current Ratio FLTR0