Rockwell Automation 1794-OE8H, Series B Flex I/O Output HART Module Installation Instructions - Manual (Page 26)

26 FLEX I/O 8 Output HART Analog Module
Publication 1794-IN109D-EN-P - January 2014
HART Read Back When this bit is set (1), it indicates that HART communications are
failing on the associated channel.
Range: 0 = normal, 1 = HART communication failure.
HART
Communication Range: 0 = normal, 1 = HART communication is currently occurring.
HART Transmitter
List When this bit is set (1), it indicates that a HART field device was found
during the rebuild sequence on the associated channel.
Range: 0 = transmitter was not found, 1 = HART transmitter was
found.
Extended
Configuration Configuration additions are needed for HART communications. An
extended configuration area is provided. This Extended Configuration
table is configured by writing a CIO or MSG instruction with the
following:
Class = 0x7D
Instance = Product location on flexbus
(Use 1 for the module
located next to the adapter.)
Attribute = 0x65
Service = Set Attribute Single (0x10).
HART Status
Indicators When this bit is set (1), the indicators are used for HART diagnostic.
Indicator behavior changes to show communication on HART. Each
status indicator represents a HART loop. Flashing yellow indicates that
communication is currently being processed. Solid yellow means that
this device is in the transmitter list.
HART Status Inhibit When this bit is set (1), the HART communication status is not shown
in the realtime data table. The appropriate areas are cleared with
zeroes.
Range: 0 = normal, 1 = inhibit HART.
50/60 Hz Filter Range: 0 = 50 Hz, 1 = 60 Hz.
HART Read Back
Threshold Delivers the percentage value (in steps of 1%) of the threshold for
forcing the HART read back indication (input signal deviation
HART/Analog) with a 31% maximum deviation.
If there is no HART transmitter on the loop or the loop is not in the
transmitter list, the function is switched off internally in the I/O
module.
Range: 0 = disabled, 1…4 = not supported from I/O module (set to 5
internally), 5…31 = percentage threshold data (5…31%).
Field Descriptions