Siemens SINUMERIK 828D Manual page 226

Appendix
A.2 Abbreviations
SLM Smart Line Module
SMC Cabinet-mounted sensor modules
SME Sensor Module External
SRAM Static Random Access Memory: Static memory (battery-backed)
USB Universal Serial Bus: Bus system for connecting additional devices to a computer
VDE Association of Electrical Engineering, Electronics and Information Technology (Germany)
226
Manual, 03/2013, 6FC5397-2DP40-3BA1
PPU