Siemens S5-135U/155U System Manual page 296

Interface Modules
Jumper
IM 300-5 (-5CA11)
Assignments
Figure 7-3
You must insert jumper 8-9 at location 4 for address setting in the extended
I/O area (O area). All other jumpers must remain in their factory settings.
7-6
16 9
4
8
1
X3
J1
J2
LED1
LED2
X4
Location of Jumpers on the IM 300-5 (-5LB11) (when Delivered)
X1
J3
X2
J8
System Manual
C79000-G8576-C199-06