Gasboy CFN III Mgnr's Mnl V3.4 - Manual (Page 110)

Transactions
Page 94 MDE-4315 CFN Series CFN III Manager’s Manual for Windows NT · August 2004
end pointer. The last transaction settled pointer (if supported by the router)
points to the last transaction that was settled with a network host. All
transactions after this still need to be settled with the host. If this is not
supported by the router, all transactions are assumed to be settled.
When the end pointer reaches the begin pointer, the transaction file is full and
no new transactions can be added. Before that happens, you should save the
transactions, then use RESET TRANSACTION (see below) to reset the begin
pointer to one greater than the last transaction, clearing the transaction file and
making room for new transactions.
How to Reset the Transaction-begin Pointer
The transaction-begin pointer determines which transaction number will begin
the next transaction printout. It also determines which transactions are kept safe
and which transactions can be recorded over as new transactions occur.
Transactions after the transaction-begin pointer are kept safe. Transactions
before the transaction-begin pointer can be recorded over by new transactions.
If your site is not polled electronically by a host computer, you must reset the
transaction-begin pointer regularly to make memory available for recording
new transactions. If your site is polled by a remote computer, that computer will
reset the transaction-begin pointer after it finishes collecting transactions, and
you must never do so manually.
The transaction-begin pointer will not go beyond the last transaction-settled
pointer or the print-begin pointer unless forced to do so with the FIX_TRAN
command. This protects the system from overwriting transactions that are
needed for settlement or by polling a host computer.
Figure 10-1: The Transaction Pointers
I
End pointer
Begin pointer