A
03.04 Appendix
Abbreviations
RPY
Roll Pitch Yaw: Rotation type of a coordinate system
RS-232-C
Serial interface (definition of the exchange lines between DTE and
DCE)
RTS
Request To Send: Control signal sent by serial data interfaces to
request that the send part is switched on
SBL
Single block
SD
Setting data
SDB
System data block
SEA
Setting Data Active: Identifier (file type) for setting data
SFB
System Function Block
SFC
System Function Call
SK
Softkey
SKP
SKiP: Skip block
SM
Stepper motor
Software limit switch
Software limit switches
SPF
Sub Program File: Subprogram
SRAM
Static RAM (non-volatile)
SRM
Synchronous Rotary Motor
SSI
Serial Synchronous Interface: Synchronous serial interface
STL
Statement list
SW
Software
SYF
System Files
Siemens AG, 2004. All rights reserved.
SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition A-141
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