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6 - Programming
Simatic 505 SoftShop
Mnemonic
Instruction
DRUM
Simulates electro-mechanical stepper
switch.
DSET
Sets date in real-time clock.
EDRUM
Simulates electro-mechanical stepper
switch. Can be indexed by timer,
event, or timer and event.
END
Unconditionally terminates a scan.
EQU
Equal to.
FRS
Force role swap
GEQ
Greater than or equal to.
GTR
Greater than.
GTS
Calls a subroutine.
IMC
Compares status of discrete points
with a specified bit pattern in a set of
patterns.
IORW
Does immediate read or write to
discrete or word I/O.
JMP
Freezes outputs in zone of control.
JMPE
Freezes outputs in zone of control.
LBL
Selectively enable/disable program
segments during scan.
LDA
Copies the logical address of a
memory location into a memory
location.
LDC
Copies the logical address of a
memory location into a memory
location.
LEQ
Less than or equal to.
LESS
Less than
LOCK
Used together with UNLOCK and
provide a mechanism whereby
multiple applications in the 575
system can coordinate access to
shared resources.
MCAT
Motor control alarm timer.
MCR
Master control relay.
MCRE
Master control relay.
MDRMD
Drum; uses configurable mask to
control coils.
MDRMW
Drum; uses configurable mask to
write to words.
MIRF
Copies a table into the control relay
memory or discrete image register.
MIRT
Copies status of control relays or
discrete image register bits to table.
MIRW
Copies bit status from control relays
or discrete image register to a word.
MOVE
Copies bytes, words, or long words
from a source location to a