Siemens SINUMERIK 840D sl Programming Manual page 776

Tables
19.1 Operations
Operation Type
1)
for explanations, see legend (Page 776).
1) 2) 3) 4) 5)
WALIMON G
6)
WHEN K
WHENEVER K
WHILE K
WRITE P
WRTPR P
X A
XOR O
Y A
Z A
1)
776
Meaning
BCS working area limitation ON
The action is executed cyclically
when the condition is fulfilled.
The action is executed once
whenever the condition is fulfilled.
Start of WHILE program loop
Write text to file system.
Appends a block to the end of the
specified file.
Delays the machining job without
interrupting continuous-path mode
Axis name
Logic exclusive OR
Axis name
Axis name
Type of operation:
A 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).
C 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.
F Predefined function (supplies a return value)
The call of the predefined function can be an operand in an expression.
G G function
G functions are divided into function groups. Only one G function of a group can be
programmed 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).
K 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 ... )
O Operator
Operator for a mathematical, comparison or logical operation
W TP SA Description see
2) 3) 4)
PGsl
m +
FBSY
- +
FBSY
- +
PGAsl
+
Program loop with condition at start of
loop (WHILE, ENDWHILE) (Page 114)
PGAsl
+ -
Write file (WRITE) (Page 139)
PGAsl
+ -
PGsl
m/s +
PGAsl
+
Comparison and logic operations
(Page 71)
PGsl
m/s +
PGsl
m/s +
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
5)
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