Mitsubishi Electric MELDAS 600M Series Instruction Manual page 52

(4) Notes
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CHAPTER 1 SCREEN OPERATIONS
Starting and ending buffer corrections
1) If automatic operation is started or there is not a next command data, the buffer correction
mode is not entered even if the menu key is pressed.
2) If an "In preread block" error occurs and the buffer correction mode is entered, the block in
which the error occurred displays at the head of the area.
3) To stop or to cancel the buffer corrections, press the
key.
4) If another menu key, etc., is pressed before pressing the
contents return to the original data.
5) If another screen is changed to or if the NC is reset during buffer correction, the buffer
correction is canceled. In this case, the corrected contents are not saved, and the buffer
correction mode ends.
6) The buffer cannot be corrected for a program running with HD (data server), FLD or IC card
operation.
Display data during buffer correction
1) The key operations used for corrections in the buffer correction mode are the same as the
operations when editing a program. However, blocks not displayed in the buffer correction
area cannot be displayed or edited.
2) The number of characters that can be input at once is the total of the number of characters
incremented (or decremented) through the buffer correction and the number of characters
in the other blocks displayed in the correction area. The number is a max. 234 characters
(39 characters × six lines).
Therefore, if adding data, when there is no open area left in the correction area, further
characters cannot be input.
By pressing the
INPUT
Enter the buffer correction mode again, and then add the data.
Operations during buffer correction
1) If there is no ";" (EOB) at the data in the last block corrected when the
pressed, it is added automatically.
2) When the buffer correction mode is entered, the last block displayed in the buffer correction
area may not fit in if the block is long, etc.
To correct this type of block, take care to the following points.
(a) If a ";" (EOB) is added to the end of the displayed data, the section following the
incomplete display becomes another block. If ";" (EOB) is not added, the following
section stays the same, and is handled as the continuation of the displayed section.
(b) If one block is deleted by pressing the
section following the incomplete display (up to the ";").
3) Operation cannot be started during buffer correction. An alarm occurs.
RS-232C operation buffer correction
1) There is a limit to the number of blocks that can be inserted for buffer correction during
RS-232C operation. Normally, up to ten blocks can be added. However, depending on the
execution state of the added blocks due to buffer correction, the number of blocks that can
be inserted may be less than the maximum number of blocks to be added originally.
If there are not enough empty blocks and the blocks cannot be inserted, the "Can't write
into file" will occur. Cancel the buffer correction being carried out.
2) Blanks cannot be inserted to make the machining program easier to read. The blanks in the
display will be deleted when the corrections are set by pressing the
3) During buffer correction, if "(" is added as the first character of the comment, the closing
parenthesis ")" must always be included in the same machining program as the last
character of the comment.
If only a single parenthesis "(" is added without ")", a "Program end error" will occur when
automatic operation is started thereafter.
4) The maximum number of characters that can be included in one buffer correction block
during RS-232C operation is 128 characters including ";" (EOB).
search engine
2. Monitor (Operation) Screens
key again at this time, the program is redisplayed for each block.
C•B ESC
I – 37
key again, or press the
Buffer correct
key, the corrected buffer
INPUT
INPUT
key, the block is deleted up to the
key.
INPUT
key is