Yokogawa EJX430B - Manual (Page 62)

<8. Setting Parameters>
8-24
IM 01C27B01-01EN
8.4 Self-Diagnostics
8.4.1 Identify Problems by Using the
Device Configuration Tool
First, check Diagnostic Status of the self-diagnostic
result.
Table 8.3 Diagnostic Status
Bits Contents
Example
NAMUR NE107
Categorization
Bit31 (MSB) F: Failure status ---
Bit30 C: Function check status ---
Bit29 O: Out of specification status ---
Bit28 M: Maintenance required status ---
Bit27 Faults in electronics F
Bit26 Faults in sensor or actuator element F
Bit25 Installation, calibration problem C
Bit24 Out of service C
Bit23 Outside sensor limits O
Bit22 Environmental conditions out of device specification O
Bit21 Fault prediction: Maintenance required M
Bit20 Power is critical low: maintenance need short-term M
Bit19 Power is low: maintenance need mid-term M
Bit18 Software update incomplete C
Bit17 Simulation is active C
Bit16** Faults due to process influence F
Bit15** Faults due to non-compliance with specified operating conditions F
Bit14** Other faults F
Bit13-Bit08 reserved by WCI ---
Bit07-Bit01 vendor specific area ---
Bit00 Detail information available
1: available
0: no available
---
Checking the Diagnostic Status category allows
taking the proper action. The Diagnostic Status
contents are common for all ISA devices, and the
setting for the Diagnostic Status category can be
changed. For further details, refer to Diagnostic
Status Detail.
In Diagnostic Status Contents that can be
diagnosed by the EJX, the alert category set in Out
of Service can be changed to Check function. To do
so, follow one of the procedures below.
a) UAPMO block: UAP Option, select enable.
b) UAPMO block: Diagnostic Configuration,
change Out of Service from Failure to Check
function.
c) UAPMO block: UAP Option, select disable.
UAPMO block: Diagnostic Status
Any of the four categories (Check function,
Maintenance required, Failure, and Off
specification) according to NAMUR NE107* is
supplied to Diagnostic Status of each diagnostic
result.
The contents of diagnostic status are defined either
valid or invalid at Diagnostic Switch parameter.
Follow the example below to change “Out of
Service” to invalid.
a) UAPMO block: UAP Option, select enable.
b) UAPMO block: Diagnostic Switch, turn ON
Turn off “Out of Service”. Out of Service.
c) UAPMO block: UAP Option, select disable.
Note: Be careful when changing the alert category and turning
detection on and off as described above. Be sure to set
UAP OPTION to disable again to prevent setting errors.
*: NAMUR NE107 “Self-Monitoring and Diagnosis of
Field Devices”
In Diagnostic Configuration setting, select one from the
followings; F: Failure status, C: Function check status,
O: Out of specification status, or M: Maintenance
required status.
**: Applicable for Detachable antenna type (Amplifier
housing code: 8 or 9).