Siemens SIMATIC 505 - Page 96

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• 6 - Programming Simatic 505 SoftShop
Mnemonic Instruction
segments during scan.
SMC Compares status of discrete points
with a set of specified bit patterns.
SQRT Square Root.
SSI Scan synchronization inhibit
STFE Searches for a word in a table equal
to a specified word.
STFN Searches for a word in a table not
equal to a specified word.
SUB Subtraction
TAND ANDs the corresponding bits in two
tables.
TASK Start a new RLL program segment.
TCMP Compares current time with a
specified time.
TCPL Inverts status of each bit in a table.
TEXT Places textual information into L-
Memory.
TMR Times events.
TMRF Times events.
TOR ORs the corresponding bits in two
tables.
TSET Sets time in real-time clock.
TTOW Copies a word from a table.
TXOR Does an EXCLUSIVE OR on the
corresponding bits in two tables.
UDC Counts events up or down.
UNLCK Used together with LOCK and
provide a mechanism whereby
multiple applications in the 575
system can coordinate access to
shared resources.
WAND Does logical bit-by-bit AND on two
words.
WOR Does logical bit-by-bit OR on two
words.
WROT Rotates the 4-segment bits of a word.
WTOT Copies a word into a table.
WTTA ANDs bits of a word with the bits of
a word in a table.
WTTO ORs bits of a word with the bits of a
word in a table.
WTTXO Does an EXCLUSIVE OR on the bits
of a word with the bits of a word in a
table.
WXOR Does logical bit-by-bit EXCLUSIVE
OR on two words.
XSUB Calls an externally developed
subroutine and passes parameters to