Siemens 6AG1138-4DF11-7AB0

The ET200S EM 1SI RS232/422 supports a temperature range of -25 to +70 °C and is designed with a conformal coating for enhanced durability in industrial environments. This module, based on the designation code 6ES7138-4DF11-0AB0, offers a single-channel serial interface with capabilities for RS-232, RS-422, and RS-485 communication, including Modbus and USS protocols.

Measuring 15 mm in width and 81 mm in height, with a depth of 52 mm, it operates on a DC supply voltage of 24 V, with reverse polarity protection. The device features a maximum input current of 80 mA and a typical consumption of 20 mA. The power loss during operation is approximately 1.2 W.

Data transmission rates reach up to 115.2 kbit/s, supporting various baud rates to accommodate different configurations. The module allows for a maximum cable length of 15 m for RS-232 and up to 1,200 m for RS-485 connections, facilitating flexible installation scenarios.

Further protection is ensured with IP20 classification, and the module includes diagnostic LEDs for both transmit and receive functionalities. It also allows potential separation between the interface and internal power supply, enhancing safety and operational integrity.