Program Correction - Siemens SINUMERIK 840C Operator's Manual

4 Machine
4.3.6

Program correction

4-72
Note
With block search run together with TRANSMIT, please ensure that before
starting the search run and before NC START both the tool tip and the
toolholder are located behind the turning center (positive x direction);
otherwise, TRANSMIT processing may start in front of the turning center and
will be interrupted with the alarm "Speed set value alarm limit".
This problem arises only with angle head cutter.
If the control recognizes a programming error during execution of a program,
the program sequence is stopped and a corresponding alarm is displayed.
If the program modifications BRK, PST or DSB are used to interrupt a
program, the advance decoding terminates at the breakpoint. Any of the blocks
following the breakpoint block can be edited. Pressing NC START causes
execution of the program to begin after the breakpoint block, i.e. any changes
become effective immediately. To use these program breakpoint features, you
must define the breakpoint before starting the program. To do this, select the
program modifications before pressing NC START. The target block must be
marked before you select the function BREAKPOINT (BRK).
All other program interruptions (such as M00/M01, NC stop, feed stop, single
block, etc.) do not interrupt the advance decoding.
It is only possible to edit at the breakpoint in these cases if the program
execution has been aborted by pressing the RESET key. This resets the entire
decoding. When you press NC START, execution begins from the start of the
program.
6FC5198-6AA60-0BP1 © Siemens AG 1999 All Rights Reserved
SINUMERIK 840C, OEM Version for Windows (BA)
01.99