Yokogawa EJA440E User Manual download pdf (Page 74)

<4. Diagnostics>

4-27

IM 01C25T01-06EN

Table 4.6 HART Conguration Tool Error Messages

Error message Probable cause Countermeasure

Invalid selection — Change the setting.

Value was too high Set value is too high.

Value was too low Set value is too low.

Too few data bytes received — —

In write protect mode Operation is set in the Write Protect mode. —

Lower range value too high LRV set point is too high. Change the range.

Lower range value too low LRV set point is too low.

Upper range value too high URV set point is too high.

Upper range value too low URV set point is too low.

Span too small Set span is too small.

Applied process too high Applied pressure is too high. Adjust the applied pressure.

Applied process too low Applied pressure is too low.

New lower range value pushed upper

range value over upper sensor limit

The shift of URV according to the new LRV

setting exceeds USL.

Change the URV setting within the

range of USL.

Excess correction attemted Amount of correction is too much. Adjust the amount.

Lower conversion not succeeded Characters are not convertible. e.g. % Correct the setting.

Not in xed current mode The xed current mode is desired but not

set in that mode.

Set in the xed current mode.

In multidrop mode Operation is set in the multi-drop mode. —

Not write protect mode Operation is set without a password. —

Lower range value and upper range

value out of limits

URV and LRV are out of range limits. Change the setting.

Table 4.7 Device Status

Item Description

Field Device Malfunction

(0x80)

Field device has

malfunctioned due to a

hardware error or failure.

Conguration Changed

(0x40)*

A modication has been

made to the conguration

of the eld device.

Cold Start

(0x20)

A reset of the eld device

has occurred, or power

has been removed and

reapplied.

More Status Available

(0x10)

Field device has more

status available.

Loop Current Fixed

(0x08)

Analog output and its

digital representation

are in xed mode, and

not responsive to input

changes.

Loop Current Saturated

(0x04)

Analog output and its

digital representation are

outside the operating

range limits, and not

responding to input.

Non-Primary Variable Out

of Limits

(0x02)

Process applied to the

non-primary variable is

outside the operating

limits of the eld device.

Primary Variable Out of

Limits

(0x01)

Process applied to the

primary variable is outside

the operating limits of the

eld device.

*: This ag can be reset. Refer to subsection 4.1.3 (6) Reset

Conguration Changed Flag

Table 4.8 Extended Device Status

Item Description

Maintenance Required

(0x01)

Device requires

maintenance.

Device Variable Alert

(0x02)

Conguration is invalid or

device is under simulation

mode.

Table 4.9 Data Quality and Limit Status

Data Quality Description

Good The value may be used in

control.

Poor Accuracy The quality of the value is

less than normal, but the

value may still be useful.

Manual / Fixed The value is manually

xed.

Bad The value is not useful.

Limit Status Description

Constant The value cannot be

changed, no matter what

the process does.

Low Limited The value is out of the

high or low limit.

High Limited

Not Limited The value is free to

change.

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