E-4
SCM
Pinout
Data
Signal
Definition
NPFW
Power
fail
warning (negative true).
NPOLL
1/0
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).
NSELFT
Leading edge causes power supply to send stack into self-test (negative true).
NSELFTEST
SELF TEST switch
on
service panel (negative true).
NSELFTESTLED
SELF TEST LED
on
service panel (negative true).
NST1LED 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).
NST5LED
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).
NST10LED Stack 10 LED
on
service panel (negative true).
NST11LED
Stack
11
LED
on
service panel (negative true).
NST12LED 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).
NWAIT
1/0
bus lengthen 10SB (negative true).
PPON
Primary
power on;
all
outputs
in
spec.
READ
110
bus data direction (high indicates data to lOP).
ST1
Stack self-test from slot
I.
ST2 Stack self-test from slot
2.
ST3 Stack self-test from slot 3.
ST4
Stack self-test from slot
4.
ST5
Stack self-test from slot 5.
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.
ST10
Stack self-test from slot 10.
ST1l
Stack self-test from slot
II.
ST12 Stack self-test from slot 12.
US4
POLL
ANDed with NSELFT.
UPS1
Uninterruptible power supply.
UPS2 Uninterruptible power supply.