The 6ES7403-1TA11-0AA0 (6ES74031TA110AA0) is a heavy-duty ER1 Extension Rack designed for the SIMATIC S7-400 automation system. This 18-slot chassis provides the physical framework and backplane communication necessary to expand the I/O capacity of an S7-400 controller. Engineered for maximum durability, the ER1 variant is specifically used for "Extension" purposes where local or remote I/O modules are required, but where certain central processing functions (like multi-computing) are not utilized in that specific rack. It serves as the backbone for high-density I/O configurations in large-scale industrial plants.
| Feature | Technical Data |
| Manufacturer | Siemens |
| Model Number | 6ES7403-1TA11-0AA0 |
| Product Family | SIMATIC S7-400 |
| Rack Type | ER1 (Extension Rack) |
| Number of Slots | 18 Slots |
| Bus Logic | P-Bus (Peripheral Bus) support only |
| Communication | Requires IM 461 interface module for connection |
| Material | Aluminum / Steel Construction |
| Dimensions (W x H x D) | 482.5 mm x 290 mm x 27.5 mm (Standard 19-inch width) |
| Weight | Approximately 3.0 kg |
| Power Supply Compatibility | Supports S7-400 PS 405/407 modules |
| Mounting | Cabinet / 19-inch Rack Mount |
The 6ES7403-1TA11-0AA0 is designed for the expansion of peripheral modules (Signal Modules, Function Modules, and Communication Processors). It features a "P-Bus" backplane, which allows for the high-speed exchange of I/O data. However, unlike the UR (Universal Rack) series, the ER1 does not support the "K-Bus" (Communication Bus), meaning it cannot house certain communication modules or CPUs that require inter-processor communication. Its 18-slot capacity makes it one of the largest expansion frames available, ideal for centralized cabinets managing hundreds of I/O points.
What is the main difference between the ER1 and the UR1 rack?
The ER1 (6ES7403-1TA11-0AA0) only supports the P-Bus (Peripheral Bus) and is intended solely for I/O expansion. The UR1 (Universal Rack) supports both P-Bus and K-Bus, allowing it to house CPUs and more complex communication processors.
How do I connect this rack to the Central Controller?
To link the ER1 to a central S7-400 rack, you must install an IM 461 interface module in the ER1 and connect it via a specialized cable to an IM 460 module located in the central rack.
Global Express Shipping
Returns & Warranty
Manufacturer: Siemens
Product No.: 6ES7403-1TA11-0AA0
Country of origin:Germany
Product Type: Extension Rack / Chassis
Barcode: 85369095
Payment: T/T, Western Union
Weight: 4100g
Dimensions: 48.25cm x 2.75cm x 29.00cm
Shipping port: Xiamen
Warranty: 12 months
The 6ES7403-1TA11-0AA0 (6ES74031TA110AA0) is a heavy-duty ER1 Extension Rack designed for the SIMATIC S7-400 automation system. This 18-slot chassis provides the physical framework and backplane communication necessary to expand the I/O capacity of an S7-400 controller. Engineered for maximum durability, the ER1 variant is specifically used for "Extension" purposes where local or remote I/O modules are required, but where certain central processing functions (like multi-computing) are not utilized in that specific rack. It serves as the backbone for high-density I/O configurations in large-scale industrial plants.
| Feature | Technical Data |
| Manufacturer | Siemens |
| Model Number | 6ES7403-1TA11-0AA0 |
| Product Family | SIMATIC S7-400 |
| Rack Type | ER1 (Extension Rack) |
| Number of Slots | 18 Slots |
| Bus Logic | P-Bus (Peripheral Bus) support only |
| Communication | Requires IM 461 interface module for connection |
| Material | Aluminum / Steel Construction |
| Dimensions (W x H x D) | 482.5 mm x 290 mm x 27.5 mm (Standard 19-inch width) |
| Weight | Approximately 3.0 kg |
| Power Supply Compatibility | Supports S7-400 PS 405/407 modules |
| Mounting | Cabinet / 19-inch Rack Mount |
The 6ES7403-1TA11-0AA0 is designed for the expansion of peripheral modules (Signal Modules, Function Modules, and Communication Processors). It features a "P-Bus" backplane, which allows for the high-speed exchange of I/O data. However, unlike the UR (Universal Rack) series, the ER1 does not support the "K-Bus" (Communication Bus), meaning it cannot house certain communication modules or CPUs that require inter-processor communication. Its 18-slot capacity makes it one of the largest expansion frames available, ideal for centralized cabinets managing hundreds of I/O points.
What is the main difference between the ER1 and the UR1 rack?
The ER1 (6ES7403-1TA11-0AA0) only supports the P-Bus (Peripheral Bus) and is intended solely for I/O expansion. The UR1 (Universal Rack) supports both P-Bus and K-Bus, allowing it to house CPUs and more complex communication processors.
How do I connect this rack to the Central Controller?
To link the ER1 to a central S7-400 rack, you must install an IM 461 interface module in the ER1 and connect it via a specialized cable to an IM 460 module located in the central rack.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Black
|
| Country of origin |
Germany
|
| Power source |
AC-powered
|
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