Siemens SINUMERIK 840D sl Function Manual page 274

Connecting sensors and actuators
8.5 Safe programmable logic
REPEAT, UNTIL
Program flow
STOPRE
DELAYSTON
DELAYSTOF
Comparison operators
<>, ==, >=, <, >, <=
Bit-by-bit logic operators
B_END
B_OR
B_NOT
B_XOR
Logical operators
AND
OR
NOT
XOR
For the logic operations, the following applies to the BOOL, CHAR, INT and REAL data types: 0 cor‐
responds to FALSE; not equal to 0, corresponds to TRUE
Synchronized action
CANCEL
IDS
WHENEVER
WHEN
EVERY
FROM
DO
No subprograms, i.e. technology cycles can be called in the action section.
No axes can be traversed and no auxiliary functions can be output.
Values can be assigned to the following:
- R parameters
- $AC_PARAM[ ]
- $AC_MARKER[ ]
- all Synact GUDs
- all safety system variables and G functions that can be written to
G function
G70
G71
G700
G710
274
;Program loop with condition at end of loop
;Preprocessing stop
;Start of a stop delay area
;End of a stop delay area
;Delete synchronized actions
;Static synchronized action
;no monitoring with respect to a number range
;The action is cyclically executed in each IPO clock cycle,
;as long as the condition is fulfilled.
;As soon as the condition has been fulfilled, the
action is executed once.
;The action is initiated once when the condition is satisfied.
;The action is executed again if the condition transitions from
;the false state into the true state.
;If the condition has been fulfilled once, the action is executed cyclically
;in every interpolation clock cycle for as long
;as the synchronized action remains active.
;Start of the action section
;Inch dimensions (group 13) G71
;Metric dimensions (group 13)
;Inch dimensions also F (group 13)
;Metric dimensions also F (group 13)
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated