Siemens SIMATIC Panel PC 870 Equipment Manual page 125

Release 11/02
Pin No.
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
# low active
Under normal conditions, the signals –SBHE, LA17 – LA23, –MEMR and MEMW
are operated as outputs (sending from CPU). Only CPU modules that are suitable
for use as a master CPU for system bus access send and receive these signals. A
minus sign, "–", in front of the signal name shows that the signal is LOW active.
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
Signal Name Type
*
SBHE# O
LA 23 I/O
LA 22 I/O
LA 21 I/O
LA 20 I/O
LA 19 I/O
LA 18 I/O
LA 17 I/O
–MEMR# I/O
–MEMW# I/O
SD 08 I/O
SD 09 I/O
SD 10 I/O
SD 11 I/O
SD 12 I/O
SD 13 I/O
SD 14 I/O
SD 15 I/O
Hardware Information
Pin No. Short
Name
D1 MEMCS16#
D2 IOCS16#
D3 IRQ 10
D4 IRQ 11
D5 IRQ 12
D6 IRQ 13
D7 IRQ 14
D8 DACK0#
D9 DRQ 0
D10 DACK5#
D11 DRQ 5
D12 DACK6#
D13 DRQ 6
D14 DACK7#
D15 DRQ 7
D16 5 V
D17 MASTER#
D18 0 V
Type
I
I
I
I
I
I
I
O
I
O
I
O
I
O
I
V
CC
I
GND
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