Siemens SINUMERIK 840D sl Operating Manual page 741

PLC variables
Times
Counters
Data
Formats
B
H
D
+/-D
F
A
Notation examples
Permissible notation for variables:
● PLC variables: EB2, A1.2, DB2.DBW2, VB32000002
● NC variables:
– NC system variables: Notation $AA_IM[1]
– User variables / GUD: Notation GUD/MyVariable[1,3]
– OPI notation: /CHANNEL/PARAMETER/R[u1,2]
Inserting variables
The start value for "Filter/Search" of variables differs. For example, to insert the variable $R[0],
enter the following start value:
● The start value is 0 if you filter according to "System variables".
● The start value is 1 if you filter according to "All (no filter)". In this case, all signals are
displayed and shown in the OPI notation.
The GUD from the machine data is only displayed in the Search window for the variable
selection when the associated definition file has been activated. Otherwise, the sought
variables must be entered manually, e.g. GUD/SYG_RM[1]
Milling
Operating Manual, 05/2017, A5E40868956
Time (Tx)
● Counter (Cx)
● Counter (Cx)
● Data block (DBx): Data bit (DBXx), data byte (DBBx), data word (DBWx),
data double word (DBDx)
● Data block (VBx): Data bit (VBXx), data byte (VBBx), data word (VBWx),
data double word (VBDx)
Binary
Hexadecimal
Decimal without sign
Decimal with sign
Floating point (for double words)
ASCII character
Alarm, error, and system messages
15.6 PLC and NC variables
741