Siemens SIMATIC S7-400 Modules – 6ES7403-1TA01-0AA0

Technical Dossier

Product Details And Specifications

Siemens SIMATIC S7-400 Series Technical Notes

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

The S7-400 operates on a passive backplane bus architecture with separate communication and I/O buses, supporting hot-swap module replacement in redundant configurations. Rack sizes range from 4-slot to 18-slot, accommodating mixed populations of CPU, interface, signal, function, and communication modules. The platform supports PROFIBUS-DP, PROFINET, Industrial Ethernet, and MPI natively, and integrates directly with Siemens WinCC, PCS 7, and STEP 7 / TIA Portal engineering environments.

The Evolution of S7-400 Architecture

The S7-400 platform was introduced in 1994 as the successor to the SIMATIC S5-115U/H and S5-135U/155U families. The initial release established the core rack-and-module architecture with the CR2 and UR2 universal racks and the first-generation CPU 412 and CPU 414 processors.

Between 1997 and 2003, Siemens expanded the CPU range with the CPU 416 and CPU 417, increasing working memory from 256 KB to 30 MB and introducing integrated PROFIBUS-DP master interfaces. The IM 460/461 interface module family enabled multi-tier rack expansion, allowing a single CPU to address up to 21 expansion racks across central and distributed configurations.

The 6ES7403-1TA01-0AA0 is an IM 403-1 interface module used in the S7-400 central rack (CR) to connect expansion racks via the K-bus. It is a send module paired with the IM 460 receive module family and supports up to 4 expansion racks at distances up to 1.5 m (local) or 600 m (remote via fiber).

S7-400 Full Catalog & Functionalities (SKU List)

CPU Modules

• 6ES7412-1XJ05-0AB0: CPU 412-1, 256 KB work memory, MPI/DP interface, entry-level S7-400 processor.
• 6ES7414-2XK05-0AB0: CPU 414-2, 4 MB work memory, dual MPI/DP interfaces, mid-range process control.
• 6ES7414-3XM05-0AB0: CPU 414-3 PN/DP, 4 MB work memory, integrated PROFINET IO controller.
• 6ES7416-2XN05-0AB0: CPU 416-2, 16 MB work memory, high-throughput process automation CPU.
• 6ES7416-3XR05-0AB0: CPU 416-3 PN/DP, 16 MB work memory, PROFINET IRT support.
• 6ES7417-4HT14-0AB0: CPU 417-4H, 30 MB work memory, H-system redundant CPU, SIL 2 capable.

Interface Modules (IM)

• 6ES7403-1TA01-0AA0: IM 403-1 send module, central rack to expansion rack K-bus interface, up to 4 ER connections.
• 6ES7460-1BA01-0AB0: IM 460-1 receive module, local expansion rack interface, pairs with IM 403-1.
• 6ES7461-1BA01-0AA0: IM 461-1 receive module, remote expansion rack, up to 600 m via fiber optic.
• 6ES7463-2AA00-0AA0: IM 463-2 interface module, S5 to S7-400 expansion rack adapter for legacy migration.

Digital Input/Output Modules (DI/DO)

• 6ES7421-1BL01-0AA0: SM 421 DI 32×DC 24V, 32-channel digital input, 24 VDC, 0.5 ms filter.
• 6ES7422-1BL00-0AA0: SM 422 DO 32×DC 24V/0.5A, 32-channel digital output, transistor, 0.5 A per channel.
• 6ES7431-1KF10-0AB0: SM 431 AI 8×13Bit, 8-channel analog input, ±10 V / 0–20 mA, 13-bit resolution.
• 6ES7432-1HF00-0AB0: SM 432 AO 8×12Bit, 8-channel analog output, ±10 V / 0–20 mA, 12-bit resolution.

Communication / Function Modules (CP/FM)

• 6GK7443-1EX30-0XE0: CP 443-1, Industrial Ethernet CP, TCP/IP, ISO, S7 communication, 100 Mbit/s.
• 6GK7443-5DX05-0XE0: CP 443-5 Extended, PROFIBUS-DP master/slave, S7/S5-compatible communication.
• 6ES7455-0VS00-0AE0: FM 455 C closed-loop control module, 16 PID control channels, process controller.

Power Supply Modules (PS)

• 6ES7407-0DA02-0AA0: PS 407 4A, 24–110 VDC / 120–230 VAC input, 5 VDC/4 A output, standard rack PS.
• 6ES7407-0KA02-0AA0: PS 407 10A, 120–230 VAC input, 5 VDC/10 A output, high-current rack power supply.

Sourcing Hard-to-Find & Obsolete S7-400 Parts

Q: Can you support multi-unit or repeat RFQ requests?
A: Yes. Send the model list, target quantity and destination so DRIVEKNMS can review sourcing options and quote the requirement as a project RFQ.

Quality Control for the S7-400 Range

S7-400 modules present specific test challenges due to their multi-bus backplane architecture (P-bus for I/O data, K-bus for rack communication) and the use of proprietary Siemens ASICs in CPU and interface modules. DriveKNMS applies the following test protocol to all S7-400 units prior to dispatch: