3. Data Formats
3.3 Tape Memory Format
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3.3 Tape Memory Format
Function and purpose
(1) Storage tape and significant sections
The others are about from the current tape position to the EOB. Accordingly, under normal
conditions, operate the tape memory after resetting.
The significant codes listed in "Table of tape codes" in "3.1 Tape Codes" in the above
significant section are actually stored into the memory. All other codes are ignored and are not
stored.
The data between control out "(" and control in ")" are stored into the memory.
3.4 Optional Block Skip
3.4.1 Optional Block Skip ; /
Function and purpose
This function selectively ignores specific blocks in a machining program which starts with the "/"
(slash) code.
Detailed description
(1) Provided that the optional block skip switch is ON, blocks starting with the "/" code are ignored.
They are executed if the switch is OFF.
Parity check is valid regardless of whether the optional block skip switch is ON or OFF.
When, for instance, all blocks are to be executed for one workpiece but specific block are not
to be executed for another workpiece, the same command tape can be used to machine
different parts by inserting the "/" code at the head of those specific blocks.
Precautions for using optional block skip
(1) Put the "/" code for optional block skip at the beginning of a block. If it is placed inside the block,
it is assumed as a user macro, a division instruction.
Example :
N20 G1 X25./Y25. ; .... NG (User macro, a division instruction; a program error
results.)
/N20 G1 X25. Y25. ;..... OK
(2) Parity checks (H and V) are conducted regardless of the optional block skip switch position.
(3) The optional block skip is processed immediately before the pre-read buffer.
Consequently, it is not possible to skip up to the block which has been read into the pre-read
buffer.
(4) This function is valid even during a sequence number search.
(5) All blocks with the "/" code are also input and output during tape storing and tape output,
regardless of the position of the optional block skip switch.