The Siemens 6ES7963-1AA00-0AA0 is a SIMATIC S7-400 interface module IF963-RS232, providing an RS232 interface for point-to-point (PTP) coupling with the CP441 communications processor. It is explicitly marked as a replacement part for that coupling role. The module transmits at up to 115.2 kbit/s and supports a maximum cable length of 15 m, which covers typical distances within a control cabinet or between adjacent cabinets. It draws a maximum of 100 mA from the backplane and dissipates a typical 0.5 W, so it imposes a light load on the S7-400 power supply — no derating concern for most rack configurations.
Siemens 6ES7963-1AA00-0AA0 IF963-RS232 Interface Module, 115
MPN6ES7963-1AA00-0AA0
Siemens SIMATIC S7-400 IF963-RS232 interface module, RS232 for PTP coupling with CP441, 115.2 kbit/s, 20 x 70 x 95 mm, 80 g.
$70.98Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Depth | 95 mm |
| Width | 20 mm |
| Height | 70 mm |
| Weight, approx. | 80 g |
| Power loss, typ. | 0.5 W |
| Cable length, max. | 15 m |
| Transmission rate, max. | 115.2 kbit/s |
| Current consumption, max. | 100 mA |
Product details
Frequently asked questions
What are the key specifications for fit?
The module is 20 mm wide, 70 mm high, 95 mm deep, and weighs 80 g. It transmits at up to 115.2 kbit/s over a maximum cable length of 15 m, draws 100 mA max, and dissipates 0.5 W typical.
How should I source this part?
Given the mature lifecycle status, the most reliable approach is to submit an RFQ. This ensures confirmed lead time and availability before committing the BOM line.
MPN
6ES7963-1AA00-0AA0