Mitsubishi Electric QJ71C24N-R4 - Appendix 9.10 When Reading User Frame

App. - 55 App. - 55
MELSEC-Q
APPENDICES
Appendix 9.10 When reading user frame
The following program example reads a user frame registered to the flash ROM of the
Q series C24 using the REMFR/REMTO instruction and I/O signals.
Refer to the User's Manual (Application) for details.
POINT
It is recommended to use GX Configurator-SC when reading a user frame
registered to the flash ROM of the Q series C24. (Refer to Chapter 8.)
(1) Program conditions
The following program reads a user frame registered to the flash ROM of the
QJ71C24N when the read command (X1029) turns ON.
(a) Devices used
:
• Read command ..................................................................... X1029
• Read command pulse signal ................................................ M10
• Read flag ............................................................................... M11
• Registration result acquisition command .............................. M12
• Number of data byte registered acquisition command ........ M13
• User frame acquisition command ......................................... M14
• Completion device for REMFR/REMTO instruction ............. M100 to 107
• Normal/abnormal completion flag for REMFR/REMTO
instruction .............................................................................. M200 to 204
• Read instruction .................................................................... D0
• Frame No. .............................................................................. D1
• Read result ............................................................................ D2
• Number of data bytes registered .......................................... D3
• User frame ............................................................................. D4 or later
• Number of registered data .................................................... D50, D100
(b) Buffer memory settings used in this example
These settings are used to read the user frame registered in Appendix 9.9.
Address Decimal (Hexadecimal)
Name
Setting
value
CH1
2 (2H)
For flash ROM
access
Register/read/delete instructions 2
3 (3H) Frame No. direction 03E8H
4 (4H) Registration/read/delete result storage —
5 (5H) Number of data bytes registered designation 10
6 (6H)
User frame
—
7 (7H) —
8 (8H) —
9 (9H) —
10 (AH) —