Siemens SINUMERIK 840D sl Function Manual page 272

Connecting sensors and actuators
8.5 Safe programmable logic
GUD
R parameters
$AC_PARAM[ ]
$AC_MARKER[ ]
$AA_ESR_TRIGGER
$AA_ESR_TRIGGER
$AN_ESR_TRIGGER
all Synact GUDs
Safety system variables that can be written to:
$A_OUTSE[ ]
$A_OUTSED[ ]
$A_OUTSI[ ]
$A_OUTSID[ ]
$A_MARKERSI[ ]
$A_MARKERSID[ ]
$A_TIMERSI[ ]
$A_CMDSI[ ]
$A_PLCSIOUT[ ]
$A_FSDP_ERR_REAC[ ]
$A_FRDP_SUBS[ ]
$A_FRDP_ERR_REAC[ ]
Reading the righthand part of an assignment is possible with all variables - i.e. also with all safety
system variables.
Arithmetic functions
+
-
*
/
DIV
MOD
SIN( )
COS( )
Tan( )
ASIN ()
ACOS( )
ATAN2( )
SQRT( )
ABS( )
POT( )
TRUNC( )
ROUND( )
ROUNDUP( )
LN( )
EXP( )
272
;Single axis, trigger ESR
;Trigger ESR
;Trigger ESR
;Addition
;Subtraction
;Multiplication
;Division
;Division, for variable type INT and REAL
;Modulo division
;Sine
;Cosine
;Tangent
;Arcsine
;Arccosine
;Arctangent2
;Square root
;Absolute value
;2nd power (square)
;Integral number
;Round to integer number
;Round up
;Natural logarithm
;Exponential function
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated