Activation Of Skip Levels - Siemens SINUMERIK 840D sl Function Manual

9.14.2

Activation of skip levels

Function
It is possible to skip blocks which are not to be executed every time the program runs. Blocks
to be skipped are indicated in the part program by the character "/" before the block number.
The skip levels in the part program are specified by "/0" to "/9".
Only one skip level can be specified for each part program block.
Parameter assignment
The number of skip levels is defined using machine data:
MD51029 $MM_MAX_SKP_LEVEL (max. number of skip levels in the NC program)
Programming
Blocks which are not to be executed in every program pass (e.g. program test blocks) can be
skipped according to the following schematic.
Program code
/N005
/0 N005
/1 N010
/2 N020
/3 N030
/4 N040
/5 N050
/6 N060
/7 N070
/8 N080
/9 N090
Activation
The 10 skip levels "/0" to "/9" are activated by the PLC setting the PLC → NCK interface
signals.
The function is activated from the HMI via the "Program control" menu in the "Machine"
operating area:
● For skip levels "/0" to "/7":
Via the interface HMI → PLC DB21, ... DBB26 (skip block selected).
● For skip levels "/8" to "/9":
Via the interface HMI → PLC DB21, ... DBX27.0 to DBX27.1.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K1: Mode group, channel, program operation, reset response
Comment
; Block skipped, (DB21,... DBX2.0) 1st skip level
; Block skipped, (DB21,... DBX2.0) 1st skip level
; Block skipped, (DB21,... DBX2.1) 2nd skip level
; Block skipped, (DB21,... DBX2.2) 3rd skip level
; Block skipped, (DB21,... DBX2.3) 4th skip level
; Block skipped, (DB21,... DBX2.4) 5th skip level
; Block skipped, (DB21,... DBX2.5) 6th skip level
; Block skipped, (DB21,... DBX2.6) 7th skip level
; Block skipped, (DB21,... DBX2.7) 8th skip level
; Block skipped, (DB21,... DBX31.6) 9th skip level
; Block skipped, (DB21,... DBX31.7) 10th skip level
9.14 Program control
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