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21 Terms and Abbreviations
Reorg
Abbreviation for the function that reorganizes the part
program memory
REPOS
NC mode
RESET
NC mode
RPA
Abbreviation for R parameter active, designates a memory
area in the NC for R parameter numbers (value
assignment)
RS 232 C
Serial interface according to RS 232 C standard
RS 422 C
Serial interface according to RS 422 C standard
SB
Abbreviation for sequence block
SEA
Abbreviation for setting data active, designates the
memory area for setting data in the NC
Sequence block
Program block with specified structure; especially suitable
for programming sequence-oriented procedures (see
"PLC 135 WB Planning Guide" and "Step 5 Language
Description")
Setting data
Setting data determine operating states (like machine
data). Unlike machine data, however, setting data are not
protected by codewords. They can be changed by the
operator. Examples: setting data for zero offsets, scalings,
speed limitations.
SI
Abbreviation for self-installation (with IAR)
Signal
Often used as an equivalent term for bit
SIMATIC
Siemens process control system
SINEC H1
Registered designation for an industrial LAN for linking
computers, e.g. a host computer and an NC
Softkey
Key underneath the operator panel screen with
programmable assignment
Special mode
Mode of the PLC CPU in which hardware interrupts
can be processed. The current program can generally be
interrupted after every Step 5 command (see "PLC 135
WB Planning Guide", own documentation).
Speed override
Change of specified speed
SPF
Abbreviation for subprogram file, designates a memory
area in the NC for part program subroutines
Spindle-specific
Separate for each spindle of the machine
© Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
21–9
SINUMERIK 880 (PJ)