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Siemens TX-I/O Engineering and installation guide CM110562en_13
Building Technologies TX-I/O™ mounting instructions 2019-05-15
4.4 Replacing a module
A plug-in module can be replaced at any time by the same or a compatible type, even
while the system is running.
When replacing a complete I/O module assembly, please note the following:
• The bus connector extends from the right-hand side of all TX-I/O devices. For this
reason, the adjacent plug-in module to the right must be unplugged from its terminal
base.
• Removing the terminal base interrupts the island bus, so that modules to the right
are no longer supplied.
Procedure for replacing module U
n
where "n" is the module number:
• FIRST swivel the address key outward on the adjacent plug-in module U
n+1
(1)
• Unplug module U
n+1
from its terminal base (2)
• Pull the slide fittings outward on the terminal base for U
n
(3)
• Remove the complete module assembly U
n
(including terminal base) (4)
• Insert the new plug-in module assembly U
n
– without address key
• Push the slide fittings on the terminal base U
n
inward
• Move the address key from the old module to the new one and swivel it carefully into
position
• Plug the adjacent plug-in module U
n+1
back into its terminal base, and swivel the
address key carefully back into position.
U
n
1
U
n
1
U
n
10762J018
2
1
4
3
As soon as the new module starts communicating with the bus master, it will be
configured according to the module address and start operation shortly after.
If you insert a previously used plug-in module or module assembly, it must be reset to
factory settings before swiveling the address key in (use the reset key).
• The same procedure as for an I/O module is required
• These devices have plug-in terminals for easy connection.
Plug-in module
Module assembly
STOP
Note!
Reset previously used
plug-in module
Bus interface modules,
power supply mo
dules,
bus connection modules