ProSoft Technology PTQ-AFC - Manual (Page 92)

Quick Start PTQ-AFC ♦ Modicon Quantum Platform
User Manual Liquid and Gas Flow Computer for Hydrocarbon Products
Page 92 of 259 ProSoft Technology, Inc.
June 23, 2011
Each Resettable Accumulator can be configured to represent a different quantity
as follows:
Accumulator Modbus address for accumulator
select (Meter-relative) Default Value
Resettable accumulator 1 136 Net (code 3)
Resettable accumulator 2 137 Gross (code 4)
Resettable accumulator 3 138 Gross Standard (code 5)
Resettable accumulator 4 139 Mass (code 1)
Valid Configuration Codes
The valid codes are:
Code Quantity
0 None
1 Mass
2 Energy (Gas Only)
3 Net
4 Gross
5 Gross Standard (Liquid Only)
6 Water (Liquid Applications Only).
For example, moving a value of 4 to holding register 8136 will configure Meter 1’s
resettable accumulator 1 as "Gross Volume". Moving "0" to holding register
10138 configures Meter 2’s Resettable Accumulator 3 to accumulate nothing
(takes it out of service).
The resettable accumulators are reset when one of the following situations occur.
Reset from AFC Manager
You may reset any of the resettable accumulators using the AFC Manager
(Meter Monitor):
Reset from Ladder Logic
The ladder logic may send a meter signals block to command one or more
resettable accumulators to be reset. This feature is especially important for
applications involving field installations that require shipping and/or receiving
product batches of predetermined size. Refer to the Ladder Logic section for your
module type for more information.