You need a LOGO! Expansion Module when the inputs and outputs of the LOGO! Basic Module are not sufficient for your application.

Each LOGO! 9 Basic Module provides 8 inputs and 4 outputs. If your application requires more digital or analog signals, you can add suitable LOGO! Expansion Modules.

This is useful for applications that start small and may grow over time, or for applications that require additional sensors, switches, actuators or analog values.

Typical examples include small machine control, pumps, fans, lighting, access systems, building-related automation, control cabinets and small infrastructure applications.

The LOGO! 9 expansion portfolio includes digital and analog expansion options.

Available modules include LOGO! DM8 12/24R, LOGO! DM8 230R and LOGO! AM4 AI/AQ.

LOGO! DM8 modules provide 4 digital inputs and 4 digital outputs. LOGO! AM4 AI/AQ provides 2 analog inputs and 2 analog outputs for voltage or current signals, depending on the wiring configuration.

Further LOGO! Expansion Modules are planned for a later release, including additional LOGO! DM8 and LOGO! DM16 variants as well as analog modules such as LOGO! AM2 RTD and LOGO! AM4 AQ.

A LOGO! 9 Basic Module can be expanded with up to 16 expansion modules.

Depending on the selected configuration, LOGO! 9 supports up to 64 digital inputs, 60 digital outputs, 16 analog inputs and 16 analog outputs.

This gives customers more flexibility when an application grows or when more signals need to be added later. A compact application can start with a LOGO! Basic Module and be extended step by step with additional digital or analog I/O.

When planning the setup, customers should check both limits: the maximum number of expansion modules and the maximum number of supported I/O signals. If these limits are exceeded, additional modules or I/O points will not be available for the application.

The most important planning point is the voltage class. Digital expansion modules must match the voltage class of the LOGO! Basic Module.

Analog modules can be used more flexibly because of their isolated interface.

A practical planning approach is: first define the required digital and analog signals, then select the suitable LOGO! Basic Module and finally add the required expansion modules.

For best setup and communication performance, digital expansion modules should be placed first, followed by analog modules.

No. LOGO! 9 Expansion Modules are not hardware-compatible with previous LOGO! hardware generations. They are designed for use with LOGO! 9 Basic Modules.

This is especially important when modernizing an existing LOGO! installation. Existing circuit programs can often be reused with LOGO! Soft Comfort V9 or later, but the physical hardware setup must be planned again with LOGO! 9 components.

In practice: the software logic can often be transferred, but older expansion hardware cannot be mixed with LOGO! 9.