HEIDENHAIN TNC151B Service Instructions Manual page 73

to SElPLC
I
to External Computer,
Tape Unit etc.
-
I
I
Standard (16Line)Address Bus 1
Expanded (20 Line) Address Bus I AS-Al5
24
v. 24
IRs232c)
Inter-
face
20 20
20.1 20.1
l4kx8 l4kx8
"Main
not mapped) not mapped)
I " I "
Processor'
CPU
TMS 9995
64kx8 64kx8
---
EPROM
1
IC- P3
( to SEIPLC Interface Board
Standard Data Bus
I I
CRU Data Bus iCRUIN.CRUOUT.CRUCLKl
tPROM
IC-P4,5
2x
64kx8
-B
tulfmm CLP Proc. Brd.
Drawing-No.:
4820EK01601000