Mitsubishi Electric MELSEC Q Series, Руководство пользователя

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Chapter 7 Memory Configuration and Data Process
(1) Transmitting data when power is turned ON or PLC CPU is reset
( )
When the power is turned ON or the PLC CPU is reset, the "parameters area
(c)
1
", "positioning data", "block start data" and "servo parameter (MR-J4-B
use)" stored (backed up) in the flash ROM/internal memory (nonvolatile) are
transmitted to the buffer memory and internal memory.
The value stored in the flash ROM is valid for "[Pr.96] Operation cycle setting",
"[Pr.113] Servo parameter transfer" and "[Pr.132] Communication mode setting".
1: Refer to Section 7.1.1 "Configuration and roles of QD77GF memory" for
details of the area.
(2) Transmitting data with TO command from PLC CPU ( )
The parameters or data is written from the PLC CPU to the buffer memory using
the TO command
2
. At this time, when the "parameter area (b)
3
", "positioning
data", "block start data" and "control data" are written into the buffer memory with
the TO command, it is simultaneously valid.
2: "Servo parameter (MR-J4-B use)", "Positioning data (No.101 to 600)" and
"Block start data (No.7002 to 7004)" can be set with only
GX Works2.
3: Refer to Section 7.1.1 "Configuration and roles of QD77GF memory" for
details of the area.
(3) Validate parameters when PLC READY signal [Y0] changes from
OFF to ON
When the PLC READY signal [Y0] changes from OFF to ON, the data stored in
the buffer memory's "parameter area (a)
4
" is validated.
4: Refer to Section 7.1.1 "Configuration and roles of QD77GF memory" for
details of the area.
POINT
The setting values of the parameters that correspond to parameter area (b) are
valid when written into the buffer memory with the TO command.
However, the setting values of the parameters that correspond to parameter area
(a) are not validated until the PLC READY signal [Y0] changes from OFF to ON.
(4) Accessing with FROM command from PLC CPU ( )
The data is read from the buffer memory to the PLC CPU using the FROM
command
5
.
5: "Servo parameter (MR-J4-B use)", "Positioning data (No.101 to 600)" and
"Block start data (No.7002 to 7004)" can be read with only
GX Works2.
(5) Reading the servo parameter from the servo amplifier ( )
[RJ010 mode]
When the parameter of the servo amplifier is changed, the servo parameter is
read automatically from the servo amplifier to the internal memory and internal
memory (nonvolatile).