Owner's manual

Section
11-1
11 Diagnostics (ADB)
Transducer Block
The diagnostics block (ADB) is a transducer block that contains two
different algorithms, Plugged Impulse Line Detection and Statistical
Process Monitoring. Learning, detection and configuration are the three
different phases to the Plugged Impulse Line and Statistical Process
Monitoring.
TABLE 11-1. Diagnostics Block (ADB)
Parameters
STATISTICAL PROCESS
MONITORING
Statistical Process Monitoring algorithm is intended to provide basic
information regarding the behavior of process measurement, PID
control block and actual valve position. This algorithm can perform
higher levels of diagnostics by distribution of computational power to
field devices. The two statistical parameters monitored by the
Statistical Process Monitoring is mean and standard deviation. By
using the mean and standard deviation, the process or control levels
and dynamics can be monitored for change over time. The algorithm
also provides:
• Configure limits/alarms for changes in mean and standard
deviation with respect to the learned levels
• High variation, low dynamics, and mean changes
• Necessary statistical information for Regulatory Control Loop
Diagnostics, Root Cause Diagnostics, and Operations Diagnostics
Parameter Index Description
BLOCK 800 Transducer block characteristics
ST_REV 801 Static revision
TAG_DESC 802 Tag descriptor
STRATEGY 803 Strategy
ALERT_KEY 804 Alert key
MODE_BLK 805 Mode
BLOCK_ERR 806 Block error
UPDATE_EVT 807 Update event
BLOCK_ALM 808 Block alarm
TRANSDUCER_DIRECTORY 809 Transducer directory
TRANSDUCER_TYPE 810 Transducer type
XD_ERROR 811 Transducer error
COLLECTION_DIRECTORY 812 Data collection directory
ADB_STATUS 813 ADB status
DIAG_EVT 814 Diagnostics event