Appendix 1.1 Data Order And Contents In The Character Areas When The Device Memory Extension Is Designated - Mitsubishi MELSEC Q Series Reference Manual

Appendix 1.1 Data order and contents in the character areas when the device memory
extension is designated
External device
side
APPX - 3
This section explains what is designated in the additional area for extension
designation, etc. when designating extension of a device memory that reads and writes
data.
Refer to Section 3.3.1 (2) and (3) for explanations of the data items that are the same
as when the device memory extension is not designated.
POINT
(1) When designating extension, designate the device memory by replacing the
device memory designation area used when extension is not designated with
the one used when extension is designated.
(2) When designating multiple device memory, designate them all to be extended.
(a) Data order of the device memory designation area when designating
extension of the device memory.
1) Data order of QnA compatible 3E/3C/4C frames and 4E frame when
performing data communication in ASCII code
H - - L H - - L
H - - L H
2) Data order of QnA compatible 3E/3C/4C frames and 4E frame when
performing data communication in binary code
External device
side
L H L H L
-
L H
Additional parts
for extension
designation
H - - - - L H - - L
- L H - - - - L H - L
Additional parts for
extension designation
Order when extension is not designated
- H L H
Order when extension is designated
L H L H
Order when extension is not designated
Order when extension is designated
APPENDICES
APPX - 3