
January 2022
Installation, Operation and Maintenance Manual
MDE 255 Rev. 0
Foundation™ Fieldbus Overview12
Section 5: Foundation™ Fieldbus Overview
5.6 Field Diagnostic Prole
The FF2000v4 rev. 3 interface, implements FF-912 Field Diagnostic Prole specication. It is
implemented by a specic parameter group of Resource Block. The diagnostics are divided into four
categories: Failure, Out of specication, Maintenance and Check Function - consistent with NAMUR
NE-107. Each of these categories share 32 conditions. Each condition can be mapped or unmapped
for each category by selecting the appropriate bit in FD_*_MAP parameter. If a condition is mapped,
then it is indicated in the parameter FD_*_ACTIVE. If the condition in FD_*_ACTIVE parameter is
not masked the corresponding bit in parameter FD_*_MASK, then the condition will be queued for
transmission using the corresponding FD_*_ALM parameter associated with the priority indicated by
the parameter FD_*_PRI.
The four categories of conditions are dened below.
Table 4.
Maintenance Although the output signal is valid, the wear reserve is nearly exhausted or a function will
soon be restricted due to operational conditions e.g. build-up of deposits.
Off-Specication
Off-specication means that the device is operating outside its specied range or an internal
diagnostic indicates deviations from measured or set values due to internal problems in the
device or process characteristics (e.g. bubble formation in ow metering or valve sticking).
Check Function Output signal temporarily invalid (e.g. frozen) due to on-going work on the device.
Failed Output signal invalid due to malfunction in the eld device or its peripherals.
With the FD_*_ACTIVE parameters you know the result after the ltering by FD_*_MAP. Prior to
ltering by FD_*_MAP, the detected conditions may be observed in the FD_Simulate.Diagnostic_Value.
The complete list and functionality of Field Diagnostic parameters implemented in FF2000v4 rev. 3
interface is reported on the Resource Block paragraph. All the parameter related to Field diagnostic
are prexed with FD_.
In the Table below are listed all the conditions handled by FF2000v4 rev. 3 with respectively
manufacturer default mapping and Recommended Action.
Table 5.
FC CONDITIONS TABLE
BIT CONDITION
FAILURE-F
OFF-SPECIFICATION-S
CHECK FUNCTION-C
MAINTENANCE-M
DESCRIPTION RECOMMENDED ACTION
31 MAIN_POWER_SUPPLY x
Indicates whether device has
lost a power supply, or in case
of fault of one of the phases
that supply the actuator
transformer, or main voltage
lower than -20% or higher
than +20% of the value stated
in the nameplate menu.
Indicates whether device has
lost a power supply, or in case
of fault of one of the phases
that supply the actuator
transformer, or main voltage
lower than -20% or higher
than +20% of the value stated
in the nameplate menu.
30 SPEED_SENSOR x Measure of motor speed
not valid. Replace speed sensor
29 POSIT_SENSOR x Value of the actuator position
not valid.
Replace position sensor or
recalibrate both stroke limits.
28 HI_HI_LO_LO_INT_TEMP x
Temperature inside the
actuator enclosure higher
than 90 °C or lower than -40 °C
Ambient temperature too
high or too low. Verify
insulation among actuator
and heat source