Technical data

9-26 9030/40 Diagrams
SCM Signal Definitions (Continued)
Signal Definition
NPFW Power fail warning (negative true).
NPOLL
110 bus interface poll (negative true).
NPSLED
PS LED on service panel (negative true).
NPSTLED Power supply overtemperature (negative true).
NRESET
RESET switch on service panel (negative true).
NRUNLED
RUN LED on service panel (negative true).
NSCMLED
SCM LED on service panel (negative true).
NSELFf Leading edge causes power supply to send stack into self-test (negative true).
NSELFfEST
SELF TEST switch on service panel (negative true).
NSELFfESTLED
SELF
TEST LED on service panel (negative true).
NSTlLED Stack 1 LED on service panel (negative true).
NST2LED Stack 2
LED on service panel (negative true).
NST3LED
Stack 3 LED on service panel (negative true).
NST4LED
Stack 4 LED on service panel (negative true).
NSTSLED
Stack 5 LED on service panel (negative true).
NST6LED Stack 6 LED on service panel (negative true).
NST7LED Stack 7 LED on service panel (negative true).
NST8LED Stack 8
LED on service panel (negative true).
NST9LED Stack 9
LED on service panel (negative true).
NSTlOLED Stack 10 LED on service panel (negative true).
NSTl1LED Stack 11 LED on service panel (negative true).
NSTl2LED Stack 12 LED on service panel (negative true).
NSTART START switch on service panel (negative true)
NSTLED Stack overtemperature (negative true).
NSTS
110 bus status (negative true).
NSYNC
110 bus interface poll (negative true).
NTEMPLED TEMP LED on service panel (negative true).
NWAlT
liO bus lengthen 10SB (negative true)
PPON Primary power on; all outputs in spec.
READ 110 bus data direction (high indicates data to lOP).
STl Stack self-test from slot 1.
ST2 Stack self-test from slot 2.
ST3 Stack self-test from slot 3.
ST4 Stack self-test from slot 4.
STS
Stack self-test from slot S.
ST6
Stack self-test from slot 6.
ST7 Stack self-test from slot 7.
ST8
Stack self-test from slot 8.
ST9
Stack self-test from slot 9.
STlO Stack self-test from slot 10.
STll
Stack self-test from slot 11.
STl2 Stack self-test from slot 12.
US4 POLL ANDed with NSELFf.
UPSI Uninterruptible power supply.
UPS2
Uninterruptible power supply.