
4.AUTOMATIC OPERATION OPERATION B-63324EN-1/03
- 122 -
4.5 EXECUTING AUTOMATIC OPERATION
While executing a block, the CNC usually calculates the next block to
convert it into data in the executable form. This is called buffering.
After automatic operation is started, the following are executed:
1 A one-block command is read from the specified program.
2 The block command is decoded.
3 The command execution is started.
4 The command in the next block is read.
5 Buffering is executed. That is, the command is decoded to allow
immediate execution.
6 Immediately after the preceding block is executed, execution of
the next block can be started. This is because buffering has been
executed.
7 Hereafter, automatic operation can be executed by repeating the
steps (4) to (6).