Siemens SINUMERIK 840D sl Function Manual page 474

K1: Mode group, channel, program operation, reset response
9.5 Program test
The single-block types are determined via the user interface in the menu "Program controls".
Function feature for single-block type series
In a series of G33/G34/G35 blocks, a single block is only operative if "dry run feed" is selected.
Calculation blocks are not processed in single-step mode (only if single decoding block is
active).
SBL2 is also ineffective with G33/G34/G35.
Selection
It is possible to select the single-block mode:
● Via the machine control panel (key "Single Block")
● Via the user interface
For an exact procedure, see:
References:
Operating Manual of the installed HMI application
Activation
The function is activated through the PLC basic program via the interface signal:
DB21, ... DBX0.4 (activate single block)
Display
Active single-block mode is indicated by a reversal in the relevant field in the status line on the
user interface.
Because of the single-block mode, as soon as the part program processing has processed a
part program block, the following interface signal is set:
DB21, ... DBX35.3 (program status interrupted)
Processing without single-block stop
Despite the selected single-block mode, a processing without the single-block stop can be set
for specific program runs, e.g. for:
● Internal ASUBs
● User ASUBs
● Intermediate blocks
● Block search group blocks (action blocks)
● Init blocks
● Subprograms with DISPLOF
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CAUTION
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions