
2. CONFIGURATION AND INSTALLATION OF
PACKAGE
B–62884EN/01
16
About size of Expansion memory to be used :
Expansion memory are used for ladder and symbol & comment data as
an temporary area. Although, Ladder Editing Package runs with no EMS
& XMS, enough size of EMS and/or XMS memory according to the
source program to handle will be necessary for better performance.
(1) Expansion memory
When reading ladder programs, Ladder Editing Package uses EMS
if available. If EMS is not available, Ladder Editing Package uses
conventional memory. When only conventional memory is used, up
to 21840 program steps can be created. When 256KB EMS memory
is available, however, up to 32000 program steps can be created. The
size of EMS is 256KB for all PMC models, regardless of the size of
the program to be edited.
(2) Expanded memory for Symbol & Comment data
FAPT LADDER uses EMS and/or XMS memory for Symbol &
Comment data if available.
When neither of them are available, Ladder Editing Package will
make temporary file on the hard diskdrive, and processing large
number of Symbol & Comment data may be slower.
About 200 Kbytes of EMS & XMS memory are used for every 1,000
Symbol data.
(3) Expanded memory for Net comment
Ladder Editing Package also uses EMS and/or XMS memory, or
temporary file as same as Symbol & Comment data. If neither EMS
nor XMS is prepared, use hard disk.
About 200 to 300 Kbytes of EMS or XMS memory are used for every
1,000 Net coment.