Overview

The Siemens C73040-A27-C246-03 Communication Module is designed for reliable RS-485 serial communication within industrial networks. It enables robust data exchange among PLCs, HMIs, smart sensors, and other controllers, ensuring stable operation even in electrically noisy environments.

With a 24 VDC operating voltage and standard industrial mounting compatibility, the module integrates easily into control cabinets and distributed systems. Therefore, it is widely used in energy monitoring, building automation, and factory process control where long-distance and interference-resistant communication is required.

Technical Data

Typical Applications

• Serial communication for PLCs ↔ field devices

• Modbus-based automation and energy management

• Remote sensor/actuator networking in manufacturing plants

• HVAC and metering integration in building automation

• Long-distance signal transmission in noisy environments

Its strong EMI resistance and RS-485 support help maintain stable, fault-tolerant communication across distributed control architectures.

FAQ

Q1: What communication standards does the module support?
A1: RS-485 serial communication (commonly used with Modbus networks).

Q2: What power supply does it require?
A2: 24 VDC industrial control power.

Q3: Can it operate in harsh conditions?
A3: Yes, the EMI-resistant industrial design ensures reliable operation on factory floors.

Q4: How is it mounted?
A4: It supports standard industrial mounting for easy cabinet installation.

Q5: What is the warranty period?
A5: Typically 12 months from Siemens or authorized service providers.