Siemens S5-135U/155U - Page 529

11-17
System Manual
C79000-G8576-C199-06
Assignments of the backplane connector: 923C coordinator
Pin
N
Pin Row
No.
z b d
Backplane
conn. 1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
+ 5 V
RESET
MEMR
MEMW
RDY
DB 0
DB 1
DB 2
DB 3
DB 4
DB 5
DB 6
DB 7
HALT
M 5 V
ADB 0
ADB 1
ADB 2
ADB 3
ADB 4
ADB 5
ADB 6
ADB 7
ADB 8
ADB 9
ADB 10
ADB 11
M 5 V
UBAT
ADB 12
ADB 13
ADB 14
ADB 15
BUSEN 1
BUSEN 2
BUSEN 3
BUSEN 4
DSI
Backplane
conn. 2
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
+ 5 V
NAU
M 24 V
M 5 V
M 5 V
RxD 6
TxD 6
RxD 4
TxD 4
STEU
STOPPA
PERO
M 5 V
RxD 8
TxD 8
RxD 7
TxD 7
RxD 5
TxD 5
RxD 3
TxD 3
RxD 1
TxD 1
TEST
Connector Assi
g
nments