Siemens Sinumerik 840D sl Programming Manual page 417

Type of operation:
1)
A
C
F
G
K
O
P
PA Program attribute
Effectiveness of the operation:
2)
m
s
Programmability in part program:
3)
+
-
Programmability in synchronized actions:
4)
+
-
T
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Address
Identifier to which a value is assigned (e.g. OVR=10). There are also some addresses that
switch on or off a function without value assignment (e.g. CPLON and CPLOF).
Technological cycle
Predefined part program in which a generally valid specific cycle (machining operation), such
as tapping of a thread or milling a pocket, is programmed. The adaptation to a specific machine
situation is realized via parameters that are transferred to the cycle during the call.
Predefined function (supplies a return value)
The call of the predefined function can be an operand in an expression.
G function
G functions are divided into function groups. Only one G function of a group can be program‐
med in a block. A G function can be either modal (until it is canceled by another function of the
same group) or only effective for the block in which it is programmed (non-modal).
Keyword
Identifier that defines the syntax of a block. No value is assigned to a keyword, and no NC
function can be switched on/off with a keyword.
Examples: Control structures (IF, ELSE, ENDIF, WHEN, ... ), program execution (GOTOB,
GOTO, RET ... )
Operator
Operator for a mathematical, comparison or logical operation
Predefined procedure (does not supply a return value)
Program attributes are at the end of the definition line of a subprogram:
PROC <program name>(...) <program attribute>
They determine the behavior during execution of the subprogram.
Modal
Non-modal
Programmable
Not programmable
Programmable
Not programmable
Programmable only in technology cycles
Tables
17.1 Operations
417