Allen-Bradley 1719 Ex I/O User Manual page 48

Chapter 5 1719 Ex I/O HART Analog I/O Modules
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Table 2 - HART Device Info Tab
Parameter Description
Status The Field Device status of the selected channel. Status has the following attributes:
• Device Malfunction
• Primary Value (PV) Out of Limits
• Loop Current Saturated
• Loop Current Fixed
• Variable Out of Limits
Diagnostic Code The diagnostic code information for each channel (up to three error values).
If the device is functioning properly, OK is displayed. If the device is not working properly,
numeric error values are displayed.
To see the additional status in the format sent by the HART field device, send CIP service 16#4C
using message instruction.
PV In HART, the Primary Variable (PV) is signaled on the 4... 20 mA analog channel. It can also be
read back using HART messages. In many HART devices, the relationship between the PV and
the analog signal can be adjusted. This area displays the following Process Variable attributes:
• Upper Range Value - to use the same engineering units in your Logix controller as in the
Field Device, enter this value in High Engineering on the Configuration tab.
• Lower Range Value - to use the same engineering units in your Logix controller as in the
Field Device, enter this value in Low Engineering on the Configuration tab.
• Damping
• Transfer Function - describes how the HART field device transforms the signal on its
transducer to the PV. Usually Linear, but sometimes Square Root (for example, for flow), or
other relationships.
Revision Displays the following revision attributes.
• Universal - this denotes the version of the HART specification to which the device conforms.
• Device
• Software
• Hardware
Rockwell Automation Publication 1719-UM001C-EN-E - August 2018