5/12/2017
TECH-538/D.W.O. 23160
Page 132 of 189
Field Diagnostics
The main purpose of the Field Diagnostics is to create a single group of parameters to
aggregate all device status and diagnostics so that a Host system can integrate this
information into its infrastructure.
The next sections were written based on or copied from the Reference (FOUNDATION™
Specification, Field Diagnostics Profile – FF-912, Rev 1.0).
Standard Diagnostics Categories
NAMUR NE-107 has an aim of bringing together manufacturer’s concepts and user’s
expectations to making use of the capabilities in field device diagnostics.
The diagnostics are broken down into four categories: Failure, Off-Specification,
Maintenance, and Check Function. These categories are defined in
Table 28:
Standard Diagnostics Definitions
Alarm Schematic
Each of these four categories shares 32 conditions that can be defined by the device
manufacturer. Each condition may be mapped or not mapped for each category.
If a condition is mapped then it is indicated in the “FD_*_ACTIVE” parameter. If the condition
in the “FD_*_ACTIVE” parameter is not masked by the corresponding bit in the “FD_*_MASK”
parameter then the condition will be queued for broadcast using the corresponding
“FD_*_ALM” parameter at the associated priority indicated by “FD_*_PRI” parameter.
