Siemens S5-135U/155U System Manual page 306

Interface Modules
Purpose of the
Jumpers
Function
Interface X3/X4
– Switched on
1)
– Switched off
"I/Os not ready" message relayed
– no
– yes
"I/Os not ready" message when
– 1 interface not ready
– 2 interfaces not ready
Set cable length between 304 / 314
– 0 to 100 m
– 100 to 250 m
– 250 to 450 m
– 450 to 600 m
1)
All other jumpers and switches must remain at the factory settings.
7-16
Jumper Settings
X22/X21 at "ON"
X22/X21 at "OFF"
X15 no jumpers
X15 jumper 1-2
X14 jumper 1-2
X14 jumper 2-3
X11
Jumper 3-4
Jumper 5-6
Jumper 7-8
Jumper 9-10
Jumper X22 is assigned to interface X3.
Jumper X21 is assigned to interface X4
ON
OFF
ON
OFF
1
2
3
1
2
3
1
2
3
1
2
3
9 7 5 3 1
10 8 6 4 2
System Manual
C79000-G8576-C199-06