Siemens LOGO! Series Manual page 35

High-speed/optimal communication performance
For optimal and high-speed communication performance between the LOGO! Base Module
and the various modules, we recommend that you install the digital modules first, then the
analog modules (examples above). (The special function PI controller is an exception: the AI
used for the value PV should be on the LOGO! Base Module or an analog input module
adjacent to the LOGO! Base Module).
Siemens recommends that you position the CM AS Interface on the far right. (If the AS
Interface voltage fails, communication between the LOGO! system and expansion modules
that are arranged to the right of the LOGO! CM AS Interface expansion module is
interrupted).
The LOGO! TD module is installed separately. You connect it to the LOGO! Base Module
with the included LOGO! TD cable.
Note
CM EIB/KNX must always be installed as the last module on the right of LOGO!.
No further interface modules may be connected to the CM EIB/KNX.
LOGO!
Manual, 04/2011, A5E03556174-01
LOGO! installation and wiring
2.1 Modular LOGO! setup
35