Defining A Stop Delay Range (Delayfston, Delayfstof) - Siemens SINUMERIK 840D sl Programming Manual

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3.14 Path traversing behavior

The preprocessing memory is not filled or filling is interrupted if the machining step contains

commands that require unbuffered operation (search for reference, measuring functions, etc.).

The control generates an internal preprocessing stop in the event of access to status data

Example: Stop preprocessing

Program code

N30 MEAW=1 G1 F1000 X100 Y100 Z50

Defining a stop delay range (DELAYFSTON, DELAYFSTOF)

The predefined DELAYFSTON and DELAYFSTOF procedures are used to define a

conditionally interruptible range in the part program (stop delay range).

DELAYFSTON and DELAYFSTOF are not permitted in synchronized actions!

"STOPFIFO" identifies the start of a machining step to be buffered in the prepro‐

cessing memory. "STOPFIFO" stops processing and fills the preprocessing mem‐

● "STARTFIFO" or "STOPRE" is recognized

● The preprocessing memory is full

● The end of the program is reached

"STARTFIFO" starts rapid processing of the machining step; the preprocessing

memory is filled in parallel to this.

Activation of automatic preprocessing memory control

Stop preprocessing

; Measurement block with probe at first

measuring input and linear interpola-

; Preprocessing stop.

Programming Manual, 12/2019, 6FC5398-2EP40-0BA0

NC programming

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Sinumerik 840de sl