Siemens SINUMERIK 840D sl Function Manual page 720

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Detailed description

2.9 Program control

An external subroutine is called by means of parts program command EXTCALL.

Path / program name:

SINUMERIK powerline with HMI Embedded

An absolute path must always be specified for SINUMERIK powerline with HMI Embedded!

EXTCALL call with absolute path name

If the subprogram exists at the specified path, it will be executed following the EXTCALL call.

If it does not exist, program execution is cancelled.

EXTCALL call with relative path name/without path name

In the event of an EXTCALL call with a relative path name or without a path name, the

available program memories are searched as follows:

1. If a path name is preset in SD42700, the data specified in the EXTCALL call (program

2. If the called subprogram is not found at the preset path, the data specified in the

3. If the called subprogram is not found on the program memory currently being searched

4. The search ends when the subprogram is found for the first time.

name or with relative path name) is searched for first, starting from this path. The

absolute path results from linking the following characters:

– The path name preset in SD42700

– The "/" character as a separator

– The subprogram path or identifier programmed in EXTCALL

EXTCALL call is then searched for in the user-memory directories.

(e.g., CompactFlash card), the next program memory (e.g., network drive) is searched in

accordance with points 1 and 2.

If the search does not produce any hits, the program is canceled.

EXTCALL ("<path/program_name>")

The path name is optional, i.e., the absolute path (or a relative

path) or only the program name (subroutine identifier) can be

The program name can be specified with or without the "_N_"

prefix and "_SPF" or "_MPF" file extension.

Basic logic functions: Mode group, channel, program operation, reset response (K1)

Function Manual, 11/2006, 6FC5397-0BP10-2BA0

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