General
Module type	LOGO! 8 DM8 12/24R
Number of digital inputs	4
Number of digital outputs	4
Output type	Relay
Input voltage	12V/24V
Output voltage	12V/24V
Breaking capacity	2 TE
Compatibility	LOGO! 8
Module designation	DM8 12/24R

The Siemens LOGO! 8 DM8 12/24R expansion module (type 6ED1055-1MB00-0BA2) is a modular add-on device for the LOGO! 8 control series, extending the number of available digital inputs and outputs. It enables individual adaptation of the control system to specific requirements in automation technology, particularly in small-scale installations and decentralized control systems. The module allows integration of digital signals with different voltage levels and provides relay outputs for controlling loads in industrial environments.

Applications
This expansion module is designed for use in industrial automation systems where flexible expansion of the LOGO! 8 base control unit is required. It is commonly used in installations controlling pumps, valves, lighting, or simple machines, where more than the standard number of inputs and outputs are needed. The support for various input voltages (12V and 24V) makes it universally applicable in systems with different operating voltages.

Functions and Features in Detail
The module features 4 digital inputs (DI) and 4 digital outputs (DO), with the outputs implemented as relay outputs. The inputs are designed for voltages of 12V and 24V, and the outputs also support 12V and 24V. The relay outputs are rated for 2 TE (interrupting capacity), enabling safe disconnection of loads. The module designation DM8 12/24R describes the number of I/O (8), the supported input voltages (12/24V), and the relay configuration (R). The expansion modules are specifically developed for the LOGO! 8 series and can be directly connected to the base unit.

Technology Explained Simply
The LOGO! 8 control is a small PLC system that can be adapted to specific applications through modular expansions. The DM8 12/24R module extends the control system with 4 digital inputs and 4 digital relay outputs. The inputs are galvanically isolated and can receive signals at 12V or 24V, enabling flexible integration into existing systems. The relay outputs are designed for load control within the 2 TE range, typical for small to medium industrial applications. The module designation DM8 12/24R describes the number of I/O (8), the supported input voltages (12/24V), and the relay configuration (R). The module connector is specifically designed for the LOGO! 8 series, allowing a direct, factory-predefined connection to the base unit.

Compatibility and Accessories
The module is compatible exclusively with the LOGO! 8 control series. It can be combined with other expansion modules from the LOGO! 8 family to increase the total number of inputs and outputs. Compatible expansion modules include, for example, the 6ED1055-1NB10-0BA2 (LOGO8 DM16 24R E 24V DC/24V DC/Relay), the 6ED1055-1HB00-0BA2 (LOGO8 DM8 24R expansion module), and the 6ED1055-1CB00-0BA2 (LOGO8 DM8 24 expansion module 24V/24V). These modules allow individual configuration of the control system, enabling up to 24 digital inputs, 20 digital outputs, 8 analog inputs, and 8 analog outputs in total.

Mounting and Installation
Mounting is done by directly plugging the module into the corresponding connector on the LOGO! 8 base unit. No additional wiring or tools are required. The electrical connection is made via the connector, which transmits the supply voltage and signals. Installation requires no additional configuration; the module is automatically recognized and integrated. The connector is designed to ensure a secure and stable connection.

Operational Advantages
The modular expandability of the LOGO! 8 control enables flexible adaptation to changing requirements. The DM8 12/24R module offers a cost-effective way to increase the number of inputs and outputs without replacing the entire system. Support for different voltage levels (12V and 24V) simplifies integration into existing systems. The relay outputs are suitable for controlling loads in industrial environments and provide galvanic isolation, enhancing safety. Direct mounting on the base unit reduces installation time and minimizes error sources.