Siemens SINUMERIK 840D sl Function Manual page 567

Single block
With the single-block function, the user can execute a part program block-by-block.
There are 3 types of setting for the single-block function:
• SLB1: = IPO single block
• SLB2: = Decode single block
• SLB3: = Stop in cycle
Basic block display
A second basic block display can be used with the existing block display to display all blocks
that produce an action on the machine.
The actually approached end positions are shown as an absolute position. The position
values refer either to the workpiece coordinate system (WCS) or the settable zero system
(SZS).
Program execution from external source
When complex workpieces are machined, the NC may not have enough memory for the
programs. The "Execution from external source" function enables subroutines to be called
(EXTCALL) and executed from an external memory (e.g., from the HMI Advanced hard disk).
Reset response
Machine data can be used to change the control-system response for particular system
settings for functions such as G codes, tool length compensation, transformation, coupled
axis groupings, tangential follow-up, and programmable synchronous spindle for certain
system settings following:
• Power up (POWER ON)
• RESET/part program end
• Part program start
Subroutine call with M, T and D functions
For certain applications, it may be advantageous to replace M, T or D functions as well as a
few NC language commandsSPOS, SPOSA, by a subroutine call. This can be used, for
example, to call the tool change routine.
Relevant machine data can be used to define and control subroutines having M, T or D
functions. For example, for a gear stage change.
Program runtime/part counter
Information on the program runtime and the part count is provided to assist the machine tool
operator.
The functions defined for this purpose are not identical to the functions of tool management
and are intended primarily for systems without tool management.
Basic logic functions: Mode group, channel, program operation, reset response (K1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Brief description
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