ProSoft Technology PTQ-AFC - Manual (Page 164)

Meter Proving PTQ-AFC ♦ Modicon Quantum Platform
User Manual Liquid and Gas Flow Computer for Hydrocarbon Products
Page 164 of 259 ProSoft Technology, Inc.
June 23, 2011
8.4 Protected Meter Proving Data in the AFC's Input Register Bank
The data concerned with Meter Proving is maintained in the Input Register Bank,
(Modbus 3xxxxx read-only Input Register Addresses), protected from change
from outside. There are two areas:
a Latest Prove Results (3x63400 to 3x63709)
b
Meter Previous Prove Summary (3x61600 to 3x62399, 50 registers per
meter)
These two areas are described in better detail in the following two topics.
8.4.1 Latest Prove Results
This area contains complete details of the latest prove that has been enabled,
including

Prove setup
 Prover and proved-meter configuration summary
 Prove state
 Prove-level calculations
 Run-level input and calculations for each run of the prove
This area supplies almost all the information presented on the proving report (the
remaining info comes from the proved meter’s Previous Prove Summary; see
next). The contents of this area persist until a new prove is enabled, so a proving
report may be regenerated at any time after the prove has been completed and
before the next one is started. There is only one such area for all meters on the
AFC module; therefore enabling a new prove for any meter resets the Prove
Results from the last completed prove, regardless of which meters were involved.
The Latest Prove Results is a block of 1310 registers, starting at input register
62400 and proceeding through register 63709. The table below explains these
sub-areas.
Name Module Memory
Address Description
Prove Status 62400 to 62409 Occupies 10 registers
Prove Setup 62410 to 62553 Occupies 140 registers and protects meter
configuration and prove setup information
for use by proving calculations and report
generation; this information remains
unchanged from the moment of enable,
regardless of how the original source
information might be altered during or after
the prove
Prove Acceptance 62554 to 62575 Occupies 22 registers and records
timestamps associated with the prove,
accumulator totalizer values, and details of
the disposition of the new meter factor upon
acceptance of the prove.