General transmitter information – KROHNE IFC 010 Converter HART User Manual

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HARTÆ Communications Protocol

IFC010 Command Specification Rev: 1.0

Release Date: 29 May 1997

Page

4.2

Update Failure

This response code (8) is returned if an EEPROM-burning process, activated via bus request, failed on any stage.

SECOND BYTE

4.3

Field Device Malfunction

Bit #7

This bit is set if any module of the standard instrument configuration: ADC, I/O Standard and Display/Counter 1 -
reports ìFatal Errorî. Refer also to Command #48, Read Additional Transmitter Status.

4.4

Configuration Changed

Bit #6

This flag is set whenever any configuration parameter is changed either via bus request or by direct instrument control
via keypad. Note, that the instrument can run simultaneously two external protocols: via HART-bus and RS485-bus.

4.5

Primary Variable Analog Output Fixed

Bit #3

This flag is set under following conditions: when the function of current output is switched ìOffî or when fixed current
mode is entered (Commands #40, #66).

4.6

Non-Primary Variable Out Of Limits

Bit #1

This flag is not implemented. The only non-primary variable having limits, namely RawFlow (refer to section 5.1), is
limited as Primary Variable (SmoothedFlow) but is not damped. Therefore near the boundaries RawFlow might provide
a random ìOut-of-Limitsî process.

4.7

Primary Variable Out Of Limits

Bit #0

This flag is set whenever the Primary Variable exceeds the Sensor Limits returned with Command #14, Read Primary
Variable Sensor Information.

5. General Transmitter Information

5.1

Inputs/Outputs And Dynamic/Transmitter Variables

The IFC010 instrument has a fixed set of outputs: one current output, one frequency/pulse output and one binary
status/indication output.

The IFC010 transmitter handles four measurement-related variables, hence Transmitter Variablesí set is composed from
variables with indices:

0 - RawFlow
1 - SmoothedFlow (via damping)
2 - PositiveTotalizer
3 - NegativeTotalizer.