Siemens Simatic S5 IP 240 Manual page 407

Addressing
Programmable
controller
S5-115U
S5-135U
S5-150U
S5-155U
3-2
I/O area Starting
address
I/O area
(P)
extended
I/O area
(Q)
Switch settings
P/Q
area
S2
5 1
128
144
160
176
192
208
224
240
0
16
32
48
64
80
96
112
128
144
160
176
192
208
224
240
EWA 4NEB 811 6120-02
IP 240
Address
S3
2 3 4
on
off