Siemens SINUMERIK 840Di Function Manual page 535

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 := Decoding single block
• SLB3 := Stop in cycle
Basic block display
A second socalled 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 on (POWER ON)
• Reset/part program end
• Part program start
Subroutine call with M and T functions
For some applications, it can be advantageous to replace M and/or T functions with a
subroutine call. This can be used, for example, to call the tool change routine.
Relevant machine data can be used to suitably define and control subroutines with M and/or
T functions.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Brief Description
1.1 Brief description
1-3