Mitsubishi Electric MELSEC-Q Series User Manual page 231

APPENDICES
(5) Memory card
Number Name
Memory card B Memory card B
SD620
models models
Drive 3
SD622 (Standard RAM) Drive 3 capacity
capacity
Drive 4
SD623 (Standard ROM) Drive 4 capacity
capacity
Drive 3 use
SD624 Drive 3 use conditions
conditions
File register
SD640 Drive number:
drive
SD641
SD642
SD643
SD644
File register file
File register file name
SD645
name
SD646
File register
SD647 File register capacity
capacity
File register File register block
SD648
block number number
1: The data is set when the CPU is stopped and then RUN or the RSET instruction is executed after parameter execution.
(6) Instruction-Related Registers
Number Name
SD715
IMASK
SD716 instruction mask Mask pattern
pattern
SD717
SD718
Accumulator Accumulator
SD719
SD781 Mask pattern of
TO IMASK Mask pattern
SD785 instruction
App - 15
Meaning
• Indicates memory card B models installed
B15
0<
Drive 4 is fixed to "3" because it has built-in flash ROM.
• Drive 3 capacity is stored in 1kbyte units.
(Fixed to "61" because it has 61kbyte RAM built-in.)
• Drive 4 capacity is stored in 1kbyte units.
• Drive 3 use conditions are stored in bit pattern.
• Stores drive number being used by file register
• Stores file register file name (with extension) selected at parameters as ASCII
code.
SD641
SD642
SD643
SD644
SD645
SD646
• Stores the data capacity of the currently selected file register in 1 k word units.
• Stores the currently selected file register block number.
Meaning
• Patterns masked by use of the IMASK instruction are stored in the following
manner:
• For use as replacement for accumulators used in A-series programs.
• Stores the mask patterns masked by the IMASK instruction as follows:
Explanation
B8 B7 B4 B3 B0
----------- >0
Drive 3
(Standard RAM)
Drive 4
(Standard ROM)
B15 B4
0 0 0 0 0 0 0
B15 B8 B7
to
Second character
Fourth character
Sixth character
Eighth character
First character of extension
Third character of extension
Explanation
B15
SD715 l15 to
SD716 l31 to
SD717 l47 to
B15 B1
l63 to l49 l48
SD781
SD782 l79 to l65
to
l127 to
SD785 l113
0: Absent
1: Present
Fixed at "3"
because of built-in
standard ROM.
B0
File register (R)
1: In use
0: Not used
B0
to
First character
Third character
Fifth character
Seventh character
2E (.)
H
Second character of
extension
B1 B0
l1 l0
l17 l16
l33 l32
B0
l64
l112
MELSEC-Q
Set by (When set)
S (Initial)
S (Initial)
S (Initial)
S (Status change)
S (Status change) 1
S (Status change) 1
S (Status change) 1
S (Status change) 1
Set by (When set)
S (During execution)
S/U
S (During execution)
App - 15