01.93 8 Appendix
8.1 List of abbreviations
8 Appendix

8.1 List of abbreviations

Mnemonics Meaning

BCD Binary coded decimal
CH1 Channel 1, main channel
CH2 Channel 2, auxiliary channel
CLF Clear file
CPU Central processing unit
CRC Cutter radius compensation
DAU Digital/analog convertor
DIO Data input/output
DRF Differential resolver function
EIA Code Special tape code, number of holes per character is always odd
EOB Label for end of block for data in EIA code
EOR Label for the program number (when EIA code is used)
EPROM Program memory with fixed program (erasable programmable read only
memory)
INC ”Incremental” mode
ISO Code Special tape code, number of holes per character is always even
LED Light emitting diode
LF Label for end of block for data in ISO code
MD Machine data
MDI Manual data input
MIB Input buffer (machine input buffer)
MPF NC part program (main program file)
NC Numerical control
OGM Operator Guidance Macro
PCA PLC alarm text
PCP PC program in machine code (programmable control program)
PLC Programmable logic control
Pr Stop Display of a programmed interruption of the program sequence
© Siemens AG 1990 All Rights Reserved 6ZB5 410-0EP02 8-1
SINUMERIK 810T, GA3 (BN)