Mitsubishi FX3U-4HSX-ADP - Memory Cassette <-> PLC (RAM Memory) Transfers Using the Loader Function; Tool for Pressing the [WR] and [RD] Keys; Writing (WR: 64 L -> PLC)

FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
467
21 FX3U-FLROM-16/64/64L/1M (Memory Cassette)
21.5 Memory Cassette <-> PLC (RAM Memory) Transfers Using the Loader Function
21
Memory Cassette
22
Battery
A
Special Devices (M8000-,D8000-)
B
Instruction List
C
Character-code
D
Discontinued models
E
Precautions for battery transportation
F
Handling of batteries in EU member states
21.5 Memory Cassette <−> PLC (RAM Memory) Transfers Using the
Loader Function
The FX3U-FLROM-64L loader function ([WR] and [RD] key operation) is explained in this section.
• Program transfers (reading/writing) are possible between the memory cassette and the PLC’s internal
RAM memory.
• The loader function is enabled while the PLC is stopped.
21.5.1 Tool for pressing the [WR] and [RD] keys
Use an insulated tool (plastic, ceramic, etc.) to press the [WR] and [RD] keys. The area around the keys is not
insulated. Using a metal screwdriver, etc can cause equipment damage.
21.5.2 Writing (WR: 64L −> PLC)
A memory cassette program is written to the PLC’s internal RAM memory.
Required condition: The PLC must be stopped.
1 Install the memory cassette on the main unit.
(Setting the PROTECT switch to ON (on memory cassette’s rear face) prevents accidental overwriting of
memory cassette program.)
→ Refer to Subsection 21.2.1 for the installation procedure.
• Verify that the PLC power is OFF, then install the memory cassette on the PLC.
• Turn the PLC power ON.
• Raise the memory cassette’s eject lever.
2 Press the [WR] key 1 time.
The [WR] LED is lit, and a preparation status is established.
• To cancel, press the [RD] key.
3 Press the [WR] key again.
Writing is executed, and the [WR] LED turns off.
• Writing to the built-in RAM is completed instantaneously, and the
LED will turn off in a short time.
4 Remove the memory cassette from the main unit.
Writing is completed when the [WR] LED turns off.
After turning the PLC power OFF, remove the memory cas-
sette from the PLC.
→ Refer to Subsection 21.2.2 for the removal procedure.
RUN
STOP
FX
3U
-48MR/ES
ERROR
RUN
BATT
POWER
0 31 2
IN
645
21
7
20
2422
23
2625
10 11 1312 1614
15 17
27
OUT
0
3
1 2
64 5
21
7
20 2422 23 2625
10 11 1312 1614 15 17
27
[WR] LED [WR] key
WR(64LJPLC)
RD(64LIPLC)