Functions And Operation Examples Of Extension File Registers - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition

4.10.6 Functions and operation examples of extension file registers

Extension file registers (ER) are usually used as log data storage destinations and set data storage
destinations.
Extension file registers can be handled only with dedicated instructions shown in the table below. When
using data contents with other instructions, transfer them to an extension register of the same device number,
and then use the extension register.
However, extension file registers (ER) are available in FX
attached.
• FX /FX
3U 3UC
Instruction
LOADR(FNC290)
SAVER(FNC291)
INITR(FNC292)
LOGR(FNC293)
RWER(FNC294)
INITER(FNC295)
*1. Extension file registers are only accessible when a memory cassette is mounted.
• FX PLCs
3G
Instruction
LOADR(FNC290)
RWER(FNC294)
*2. When the memory cassette is attached, extension file registers in the memory cassette are accessed.
When the memory cassette is not attached, extension file registers in the EEPROM built in the PLC
are accessed.
142
PLC
This (transfer) instruction reads data of extension file registers (ER)
This (transfer) instruction writes data of extension registers (R) to extension file registers (ER)
point (1 sector) units. Use this instruction to store newly created sectors (2048 points) of data to
extension file registers (ER)
This instruction initializes extension registers (R) and extension file registers (ER)
sector) units. Use this instruction to initialize extension registers (R) and extension file registers (ER)
before starting to log data by the LOGR instruction.
This instruction logs specified data, and writes it to extension registers (R) and extension file registers
*1
(ER) .
This (transfer) instruction writes specified extension registers (R) to extension file registers (ER)
instruction is supported in FX
extension register (R) to extension file register (ER)
This instruction initializes extension file registers (ER)
supported in FX PLCs Ver.1.30 or later.Use this instruction to initialize extension file registers (ER)
3UC
before executing SAVER instruction.
This (transfer) instruction reads data of extension file registers (ER) to extension registers (R).
This (transfer) instruction writes specified extension registers (R) to extension file registers (ER)
Use this instruction to store the contents of any extension register (R) in extension file registers (ER)
4.10 Extension Register [R] and Extension File Register [ER]
/FX
3U 3UC
Description
*1
.
PLCs Ver.1.30 or later.Use this instruction to store the contents of any
3UC
*1
.
*1
Description
4 Devices in Detail
PLCs only when the memory cassette is
*1
to extension registers (R).
in 2048 point (1 sector) units. This instruction is
*1
in 2048
*1
in 2048 point (1
*1
*1
.This
*1
*2
.