Mitsubishi MELSEC Q Series Programming Manual page 1236

Number Name
SD620 Drive 3/4 typs Drive 3/4 typs
Drive 3
(Standard Drive 3
SD622
RAM) capacity
capacity
Drive 4
(Standard Drive 4
SD623
ROM) capacity
capacity
App-228
Meaning
This register stores the usage status of drives 3 and 4 in the
following bit pattern.
b15 b8 b7
to
0
This register stores the usage status of drives 3 and 4 in the
following bit pattern.
b15 to b8 b7
0
*1 For the Q00UJCPU, the drive 3 (Standard RAM) type is fixed
at "0".
This register stores the drive 3 storage capacity (unit: 1K byte).
This register stores the drive 3 storage capacity (unit: 1K byte).
(Free space value after formatting is stored.)
This register stores the drive 4 storage capacity (unit: 1K byte).
This register stores the drive 4 storage capacity (unit: 1K byte).
(Free space value after formatting is stored.)
Explanation
b4 b3 b0
to to
Drive 3
0: Absent
(Standard
1: Present
RAM) type
Drive 4
(Standard "3 (FLASH ROM)"
ROM) type
to b4 b3 to b0
Drive 3
(Standard Fixed to 1
RAM) type
Drive 4
(Standard Fixed to 3
ROM) type
ponding
Set by
(When Set)
D9
*1
S
(Initial)
Corres-
Corres-
ponding
ACPU
CPU
Q00J/Q00/
Q01
Qn(H)
QnPH
QnPRH
QnU
LCPU
New
Q00J/Q00/
Q01
Qn(H)
QnPH
QnPRH
QnU
LCPU
Q00J/Q00/
Q01
Qn(H)
QnPH
QnPRH
QnU
LCPU