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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