Panasonic FP-E Programming Manual page 94

Relays, Memory Areas and Constants
Changing index register banks (for FP2SH/FP10SH only)
The banks of the index registers of the FP2SH/FP10SH can be changed to allow use
of up to 224 points (14 points × 16 banks) in a program.
Bank Bank
0 1
I0
I1
I2
I3
I4
I5
I6
I7
I8
I9
IA
IB
IC
ID
When the register bank setting instruction F410 (SETB) or the register bank changing
instruction F411 (CHGB) is used to specify a bank number, index registers I0 to ID used
after that point can be used as separate index registers from the I0 to ID index registers
used prior to changing the bank.
The bank is automatically set to bank 0 before execution of the leading address of the
program. The bank is also automatically set to bank 0 before execution of the leading
address of a second program.
The bank numbers of index registers used in interrupt programs, subroutines, and other
sub programs should be specified in such a way that the F411 (CHGB) instruction is
executed at the beginning of the sub program, and the F412 (POPB) instruction is
executed at the end of the sub program.
1 - 70
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Bank Bank
2 15