Siemens SIMATIC S7-400 Interface Module IF963-RS232 – 6ES7963-1AA10-0AA0

Overview

The Siemens SIMATIC S7-400 Interface Module IF963-RS232 (Part No: 6ES7963-1AA10-0AA0) provides industrial-grade serial communication for automation systems based on the S7-400 PLC platform. This interface module adds an RS-232 port to enable point-to-point (PTP) connections with communication processors, such as the CP441 modules, allowing reliable data exchange in distributed automation systems. 

Designed for robust performance in industrial environments, the IF963-RS232 supports stable and low-latency communication between programmable logic controllers and peripheral devices requiring serial interface connections. Its modular 19 mm wide design fits standard S7-400 racks, making it straightforward to install alongside CPUs, I/O modules, and other communication cards. 

Functional Performance and System Role

The Siemens 6ES7963-1AA10-0AA0 interface module enables connection of RS-232 devices directly to the S7-400 automation system. It supports point-to-point (PTP) communication schemes, commonly used when interfacing to serial devices or diagnostic tools, requiring direct, simple serial communication without complex networking. Typical use cases include integration with legacy devices, instrumentation interfaces, or specialized host systems. 

With a low power consumption of roughly 0.05 W and RS-232 transmission speeds up to 115.2 kbit/s over cable lengths up to 15 m, this module delivers dependable performance for serial link applications in automation environments. 

Industrial Applications

The Siemens S7-400 IF963-RS232 interface module is widely used in:

• Factory automation systems requiring legacy or serial device integration. 

• Process control facilities where RS-232 connectivity to instrumentation is necessary. 

• Maintenance and diagnostic setups where direct PTP communication to PLCs is needed. 

• Distributed PLC networks connecting host consoles, test equipment, or serial peripherals. 

The module’s lightweight design and compact form factor ensure easy expansion of S7-400 based control racks without significant space impact. 

FAQ

What is the Siemens 6ES7963-1AA10-0AA0 interface module?

It’s an RS-232 interface module (IF963-RS232) for SIMATIC S7-400 PLC systems. 

What communication protocol does it use?

It provides a standard RS-232 serial interface for point-to-point connections. 

Which Siemens PLC family does it support?

It is designed for SIMATIC S7-400 automation systems. 

Can this module interface with CP441 communication processors?

Yes — it’s commonly used for coupling with CP441 modules on S7-400 systems. 

Call to Action

Request a quote or technical inquiry for the Siemens 6ES7963-1AA10-0AA0 Interface Module to ensure compatibility with your SIMATIC S7-400 system and serial communication requirements.