Move - Siemens SIMATIC S7 System Manual

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6.1.6

Move

Move and Block Move instructions
Use the move instructions to copy data elements to a new memory address and convert
from one data type to another. The source data is not changed by the move process.
 MOVE: Copies a data element stored at a specified address to a new address
 MOVE_BLK: Interruptible move that copies a block of data elements to a new address
 UMOVE_BLK: Uninterruptible move that copies a block of data elements to a new
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
Instruction
All
SQR
SQRT
LN
EXP
SIN, COS, TAN
ASIN, ACOS
ATAN
FRAC
EXPT
address
Condition
No error
Result exceeds valid Real/LReal range
IN is +/- NaN (not a number)
IN is negative
IN is +/- INF (infinity) or +/- NaN
IN is 0.0, negative, -INF, or -NaN
IN is +INF or +NaN
Result exceeds valid Real/LReal range
IN is +/- NaN
IN is +/- INF or +/- NaN
IN is outside valid range of -1.0 to +1.0
IN is +/- NaN
IN is +/- NaN
IN is +/- INF or +/- NaN
IN1 is +INF and IN2 is not -INF
IN1 is negative or -INF
IN1 or IN2 is +/- NaN
IN1 is 0.0 and IN2 is Real/LReal (only)
Programming instructions
6.1 Basic instructions
Result (OUT)
Valid result
+INF
+NaN
-NaN
+/- INF or +/- NaN
-NaN
+INF or +NaN
+INF
+/- NaN
+/- INF or +/- NaN
+NaN
+/- NaN
+/- NaN
+NaN
+INF
+NaN if IN2 is
Real/LReal,
-INF otherwise
+NaN
+NaN
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