Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 83)

Publication 1794-UM065B-EN-E - September 2010
1794-IF8IH and 1794-OF8IH Configuration 71
Fault Alarm (8 of 1 bit each)
Alarm signal for open wire channel fault, detected at <2 mA (<500 µA in
digital mode) and short circuit (R<42 in the 4…20 mA range, <86 in digital
mode, channel off).
This alarm is disabled when a data format is selected which includes 0 mA.
Range: 0=Normal, 1=Wire off/short circuit fault detected
Default: 0
Diagnostic Data (1 of 8 bits)
Response from module as to its condition.
14/O7 Read RealT Output Data Channel 6
15/EDT Read RealT Output Data Channel 7
Where: Fn : Channel n Fault alarm
Cn : Channel n HART Current Fault
Xn : HART Transmitter List
Dn : Channel n Digital out
1794-OF8IH Primary Data Table
Word/S
ISOC Read/
Write Data
Transport Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Diagnostic Status Value: 0 Channel Failure
0x00 All No Errors (default)
0x10 Channel 0 HART Iloop Threshold Configuration Error
0x11 Channel 1 HART Iloop Threshold Configuration Error
0x12 Channel 2 HART Iloop Threshold Configuration Error
0x13 Channel 3 HART Iloop Threshold Configuration Error
0x14 Channel 4 HART Iloop Threshold Configuration Error
0x15 Channel 5 HART Iloop Threshold Configuration Error
0x16 Channel 6 HART Iloop Threshold Configuration Error
0x17 Channel 7 HART Iloop Threshold Configuration Error
0x40 Channel 0 Format Configuration Error
0x41 Channel 1 Format Configuration Error
0x42 Channel 2 Format Configuration Error
0x43 Channel 3 Format Configuration Error