Siemens SINUMERIK 840D sl Programming Manual page 999

<ExtDev>:
<SyncMode>:
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Parameter 2: Symbolic identifier for the external device/file to be opened
Type: STRING
The symbolic identifier comprises:
1. the logical device name
2. where relevant, followed by a file path (attached using "/").
The following logical device names have been defined:
Local CF card (pre-defined)
"LOCAL_DRIVE":
Reserved drive name for use in SIEMENS cycles (pre-
"CYC_DRIVE":
defined)
"/dev/ext/1", ... Available network drives
"/dev/ext/9":
Note:
It is necessary to configure in the extdev.ini file!
Reserved drive names for use in SIEMENS cycles
"/dev/cyc/1",
"/dev/cyc/2":
Note:
It is necessary to configure in the extdev.ini file!
File path:
● A file path must be specified for "LOCAL_DRIVE" and "CYC_DRIVE" e.g.
"LOCAL_DRIVE/my_dir/my_file.txt"
● The logical device names "/dev/ext/1...9" and "/dev/cyc/1...2" can be config‐
ured:
– To already refer to a file, in which case only the logical device names may
be specified, e.g.:
"/dev/ext/4"
– Or to a directory, in which case a file path must be specified, e.g.:
"/dev/ext/5/my_dir/my_file.txt"
Note:
For the logical device names "/dev/ext/1...9", "/dev/v24" and "/dev/cyc/1...2" up‐
percase/lowercase is ignored; uppercase/lowercase is significant for specifying a
path to a file. Only uppercase letters are permissible for "LOCAL_DRIVE" and
"CYC_DRIVE".
Parameter 3: Processing mode for the WRITE commands to this device/file
Type: STRING
Values: Synchronous writing
"SYN":
Program execution is stopped until the write operation
has been completed.
Successfully completing the synchronous write opera‐
tion can be checked by evaluating the error variables of
the WRITE command.
Asynchronous writing
"ASYN":
Program execution is not interrupted by the WRITE
command.
Note.
In this mode, the result variable of the WRITE command
does not provide any information and always has the
value 0 (no error). In this particular mode, there is no
certainty that the WRITE command was successful.
Work preparation
3.23 Additional functions
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