RS-232 Serial Communication Solution — SIEMENS 6ES7963-1AA10-0AA0 | IF963-RS232 | SIMATIC S7-400
The SIEMENS 6ES7963-1AA10-0AA0 (IF963-RS232) is a plug-in interface module for the SIMATIC S7-400 CP 443 communication processor family. It delivers reliable RS-232 point-to-point serial communication between S7-400 PLCs and third-party serial devices — the essential bridge for legacy-integrated and mixed-protocol industrial environments.
Where This Product Is Used
Engineers specify the 6ES7963-1AA10-0AA0 across demanding industrial communication scenarios:
- Serial device integration: Connecting barcode scanners, weighing terminals, label printers, and RFID readers to S7-400 controllers via RS-232
- Legacy system bridging: Interfacing older CNC machines, robots, or third-party controllers that only support RS-232 serial protocols
- Process data acquisition: Linking analytical instruments, flow meters, and sensors with RS-232 output to SIMATIC S7-400 systems
- HMI/SCADA serial links: Point-to-point serial communication between operator panels and S7-400 where Ethernet is unavailable
- Automotive & assembly lines: Serial communication with torque tools, test benches, and quality inspection systems
- Pharmaceutical & food processing: Connecting GMP-compliant weighing and dosing equipment with RS-232 interfaces to the PLC control layer
Technical Specifications
| Part Number | 6ES7963-1AA10-0AA0 |
| Module Name | IF963-RS232 |
| Manufacturer | SIEMENS |
| Series | SIMATIC S7-400 / CP 443 |
| Interface Type | RS-232 (serial, point-to-point) |
| Form Factor | Plug-in interface module for CP 443-1 / CP 443-5 |
| Communication Protocols | ASCII (free-port), 3964R, RK512 |
| Connector | 9-pin D-Sub (DB9) |
| Max Baud Rate | Up to 115.2 kbps |
| Operating Temperature | 0 °C to +60 °C |
| Weight | Approx. 200 g |
| Certifications | CE, UL, cULus, RoHS |
Why Engineers Specify This Model
- Native S7-400 compatibility: Designed specifically for CP 443 communication processors — no adapters or converters required
- Protocol flexibility: Supports ASCII, 3964R, and RK512 — covering the widest range of legacy serial device protocols
- Plug-in design: Compact interface module; replace without removing the CP 443 from the rack
- Proven reliability: Widely deployed in automotive, chemical, and process industries for 20+ years
- SIEMENS ecosystem: Fully configurable via STEP 7 and TIA Portal with native diagnostic support
Complete System Bill of Materials
For a complete S7-400 RS-232 serial communication solution, engineers typically specify:
- 6ES7963-1AA10-0AA0 — IF963-RS232 Interface Module (this item)
- 6GK7443-1EX30-0XE0 — CP 443-1 Advanced Communication Processor (host for IF963)
- 6ES7407-0KA02-0AA0 — PS 407 Power Supply Module
- 6ES7400-1JA01-0AA0 — UR2 Universal Rack (9-slot)
- 6ES7414-3XM07-0AB0 — CPU 414-3 PN/DP (or equivalent S7-400 CPU)
- RS-232 shielded cable, DB9 male-to-female, max 15 m recommended
Compliance & Industry Standards
- CE Marking — EU Machinery & EMC Directives
- UL / cULus Listed
- IEC 61131-2 — Programmable Controllers Hardware Requirements
- EIA/TIA-232-F — RS-232 Serial Interface Standard
- RoHS Compliant
Quality Assurance & Sourcing
At Konmask.com, every 6ES7963-1AA10-0AA0 unit is:
- Sourced from verified SIEMENS-authorized distributors or certified secondary-market suppliers
- Inspected for physical integrity, label authenticity, and firmware version prior to dispatch
- Shipped with original packaging and documentation where available
- Backed by our 90-day quality guarantee and post-sale technical support
How to Source This Part
- Add to cart directly on this page for standard stock orders
- Request a quote for bulk quantities (>5 units) or project-based procurement
- Email: [email protected] — send your BOM for a complete project quote
- Call / WhatsApp: +0086 19859288691 for urgent or time-critical requirements
- Lead time: 3–7 business days for in-stock units; 2–4 weeks for sourced orders
Application-Specific FAQ
Q: Can the 6ES7963-1AA10-0AA0 be used with CP 443-1 Advanced?
A: Yes. The IF963-RS232 is the standard plug-in interface module for the CP 443-1 and CP 443-5 family, providing the physical RS-232 port.
Q: What serial protocols does this module support?
A: It supports ASCII (free-port), 3964R, and RK512 — configurable via STEP 7 or TIA Portal.
Q: Is this module compatible with S7-300 systems?
A: No. The IF963-RS232 is designed exclusively for the S7-400 CP 443 platform. For S7-300, consider the CP 341 with RS-232 interface.
Q: What is the maximum cable length for RS-232 communication?
A: The EIA-232 standard recommends a maximum of 15 meters at standard baud rates. Use shielded cable and keep runs short for best signal integrity.
Q: Can I replace this module without powering down the rack?
A: The IF963 is a plug-in module for the CP 443. Refer to your CP 443 manual for safe-state procedures before module replacement.
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