User Manual Owner manual

48 Rockwell Automation Publication 1788-UM058B-EN-P - September 2014
Chapter 3 Logix Assemblies
Field Device Output Image
Each field device displays its PA diagnostics and all available PVs and their status
as shown in Figure 11
.
Figure 11 - Field Device Output Image
PVInt1…PVInt8
If you are using a field device that requires an output, the data must be updated in
the output image of that field device. If a real value must be sent, use the copy
function to update the PVInt.
PVStatus1…PVStatus8
If you set a process variable to be a 1-byte to 4-byte format, the data is displayed in
this image.
IMPORTANT
See the Redundant PA Code Example on page 43 for a detailed example of how
to update data for output modules.
IMPORTANT
Some field devices (such as valve positioners) operate correctly only after a
valid status (for example, ≥ 80
h
) is sent with the process variable. See Valve
Positioner Configuration on page 34 for more details.