Overview

The Siemens C73040-A27-C247-4 Communication Module is designed to provide robust RS-485 serial communication for industrial automation and power systems. It enables stable data exchange between PLCs, protection relays, and controllers, even under high electrical interference.

With rugged EMI shielding and 24 VDC operation, the module is well-suited for substations, power distribution control, and factory automation. Its plug-and-play setup helps minimize commissioning time and reduces wiring complexity. Therefore, it is widely adopted in applications requiring highly reliable communication infrastructure.

Technical Data

Typical Applications

• Substations: relay protection and SCADA communication

• Industrial automation: device networking across long distances

• Energy management: remote metering systems

• Building automation: HVAC and smart device control

• Distributed networks requiring noise-resistant communication

Its durable design ensures stable data transmission in mission-critical operations and electrically noisy environments.

FAQ

Q1: What communication protocol is supported?
A1: RS-485 serial communication, commonly used in Modbus and fieldbus networks.

Q2: What is the operating voltage?
A2: 24 VDC power supply.

Q3: Can it operate in harsh industrial conditions?
A3: Yes, it features high EMI resistance and industrial-grade durability.

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

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