Program Execution In Single-Block Mode - Siemens SINUMERIK 840D sl Function Manual

Note
Tool management
Because of the axis disable, the assignment of a tool magazine is not changed during program
testing. A PLC application must be used to ensure that the integrity of the data in the tool
management system and the magazine is not corrupted. The toolbox diskettes contain an
example of the basic PLC program.
9.5.2

Program execution in single-block mode

Function
In case of "Program execution in single-block mode" the part program execution stops after
every program block. If tool cutter radius compensation or a tool nose radius correction is
selected, processing stops after every intermediate block inserted by the controller.
The program status switches to "Program status stopped".
The channel status remains active.
The next part program block is processed on NC Start.
Application
The user can execute a part program block-by-block to check the individual machining steps.
Once the user decides that an executed part program block is functioning correctly, the next
block can be called.
Single-block types
The following single block types are differentiated:
● Decoding single block
With this type of single block, all blocks of the part program (even the pure computation
blocks without traversing motions) are processed sequentially by "NC Start".
● Action single block (initial setting)
With this type of single block, the blocks that initiate actions (traversing motions, auxiliary
function outputs, etc.) are processed individually.
Blocks that were generated additionally during decoding (e.g. for cutter radius
compensation at acute angles) are also processed individually in single-block mode.
Processing is however not stopped at calculation blocks as these do not trigger actions.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K1: Mode group, channel, program operation, reset response
9.5 Program test
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