Fp2Sh Operation; Comparison Of Ram, Rom, And Ic Memory Card Operation - Panasonic fp2/fp2sh User Manual

Programmable controller
Table of Contents

Advertisement

FP2/FP2SH
6.5

FP2SH Operation

6.5.1

Comparison of RAM, ROM, and IC Memory Card Operation

With the FP2SH, the user can select "RAM operation", "ROM operation", or "IC memory
card operation" as the method by which programs are to be executed.
RAM operation
Programs written to the RAM in the CPU unit are executed.
ROM operation
With the FP2−C2L or FP2−C2, programs written to the ROM in the expansion memory
unit are sent once to the RAM and executed. With the FP2−C2P or FP2−C3P, programs
written to the internal FROM are sent once to the RAM and executed.
IC memory card operation (FP2−C2P and FP2−C3P are supported):
Programs written to the IC memory card are sent to the RAM and executed.
Item
RAM operation
(SW2: off, SW4: —)
Items re-
None in particular, because the
quired for
RAM provided as standard in
operation
the CPU is used.
Processing
Program in the RAM is executed
in the CPU
when the RUN mode is ac-
cessed.
Contents of
Programs
memory
System registers
backed up
Hold−type data of operation
by battery
memory
in the CPU
unit
Comment data
(FP2−C2L, FP2−C2 only)
Maintenance Backup battery needs to be re-
placed.
ROM operation
(SW2: on, SW4: off)
With the FP2−C2L and FP2−C2,
an optional memory unit and
ROM
The FP2−C2P and FP2−C3P
are built into the FROM.
When the power supply is
turned on, the program in the
ROM is sent to the RAM, and
the program in the RAM is exe-
cuted.
Hold−type data of operation
memory
Comment data
(FP2−C2L, FP2−C2 only)
If the program is in the operation
memory and does not use the
hold−type memory, operation is
possible without a battery.
FP2/FP2SH Operation
6.5
FP2SH Operation
IC memory card operation
(SW2: on, SW4: on)
FP2−C2P or FP2−C3P and IC
memory card with the program
written to it.
When the power supply is
turned on, the program in the IC
memory card is sent to the
RAM, and the program in the
RAM is executed.
Hold−type data of operation
memory
If the program is in the operation
memory and does not use the
hold−type memory, operation is
possible without a battery.
With AIC52000, periodic charg-
ing or replacement is necessary.
Charging is done by inserting it
in the CPU.
With AFP2209, the replacement
of memory backup battery is
necessary.
6 − 13

Advertisement

Table of Contents
loading

Table of Contents