所有的350-374型CPU都有钥匙开关,但是一些版本的CPU固件并不支持钥匙开关的所有功能(参看本章之前的“CPU版本的说明”).这些不同在这部分中加以说明,注意在一些CPU中的钥匙开关标记有ONOFF和OFF/STOP,
FANUC A20B-0003-0310 USPP A20B00030310
GENERAL ELECTRIC 12BDD16B16A USPP 12BDD16B16A
RELIANCE ELECTRIC 45C-314 USPP 45C314
SIEMENS 6FM1-725-3AA00 USPP 6FM17253AA00
INDRAMAT MDD090C-N-020-N?2L-110PB0 USPP MDD090CN020N2L1?B
ALLEN BRADLEY 2711-K9C1 USPP 2711K9C1
BALDOR NXE100-1612S NSFP NXE1001612S
FANUC A16B-1200-0201 USPP A16B12000201
SQUARE D PBQ3640GRA NSFP PBQ3640GRA
SCHWEITZER ENGINEERING 221F00-4256MHGB USPP 221F004256M
ALLEN BRADLEY 513-BHBD-38 NSFP 513BHBD38
ALLEN BRADLEY 6181-AHBCBBEZZ USPP 6181AHBCBBEZZ
ALLEN BRADLEY 6181-CHBCBBZZR USPP 6181CHBCBBZZR
SCHWEITZER ENGINEERING 221F00-4256MHNB USPP 221F004256M
SCHWEITZER ENGINEERING 221F00-4256MVNB USPP 221F004256M
ALLEN BRADLEY 6181-CHDCBBZZR USPP 6181CHDCBBZZR