SIEMENS 6AV6545-0BA15-2AX0

What is 6AV6545-0BA15-2AX0 and where is it used?

The 6AV6545-0BA15-2AX0 is a SIEMENS SIMATIC TP170A Touch Panel featuring a Blue Mode STN display and an MPI/PROFIBUS DP interface. The device serves as a compact HMI operator station for machines and systems where process values must be visualised, alarms displayed and operating functions triggered directly via touchscreen input. Typical applications include existing installations with SIMATIC S7-200, S7-300 or S7-400 controllers, where the existing operating concept needs to be maintained. For maintenance teams, the part number is particularly important because it enables rapid identification in the event of a fault, replacement requirement, repair or spare-parts stockholding. For operators of older systems, the TP170A is especially relevant when a retrofit is not planned in the short term and the existing visualisation system must remain operational.

Overview of the key technical specifications and their significance

The panel features a 5.7-inch display with a resolution of 320 × 240 pixels, 4 blue-grey shades, and an analogue resistive touchscreen. This specification is typical of robust operator devices from older generations and remains fully adequate for traditional visualisation and input tasks in existing installations. The device operates from a 24 V DC power supply, has a current consumption of 0.24 A, and provides IP65 protection on the front panel and IP20 protection on the rear. Additional specifications relevant to control cabinet integration include front dimensions of 212 × 156 mm, an installation depth of 45 mm, and a weight of approximately 0.7 kg. The device can be configured using ProTool/Lite from Version 5.2 SP1 or WinCC flexible Compact from Version 2004 onwards. For users, an important consideration is that the TP170A supports up to 500 variables, 250 screens and 1,000 alarm messages, clearly positioning it as a solution for traditional and comparatively straightforward HMI applications.

Product status, life-cycle status and obsolescence

The EICHLER product page lists the 6AV6545-0BA15-2AX0 with an EOP (End of Production) status effective from 01 April 2008. Siemens additionally classifies the device as a spare part, and Siemens support documentation identifies the TP170A series as discontinued. For operators, this means that the panel clearly falls within the scope of obsolescence management, where availability, repairability and spare-parts strategy become more important than purchasing new devices directly from the manufacturer. Siemens identifies the TP177A as the successor device and describes it as an innovated replacement and a cost-optimised successor platform. In practice, however, this should not be interpreted as an automatic one-to-one replacement. During migration or device replacement projects, the project configuration, communication setup and supported engineering objects must be carefully reviewed and adapted where necessary.

Available EICHLER services and when they are beneficial in practice

For this panel, EICHLER offers repair services, exchange units, function-tested used devices and new devices. The product page specifies short turnaround and delivery times for each of these options. For maintenance departments, repair is particularly advantageous when the existing visualisation system should continue operating unchanged and modifications to the project configuration or machine approval process are to be avoided. Exchange units are particularly valuable during unplanned breakdowns, as a function-tested replacement device is available in advance. Used devices can help when obsolescence limits spare-parts availability and multiple identical assemblies are required for stockholding purposes. According to EICHLER, repairs include technical cleaning, preventive maintenance, comprehensive functional testing and a minimum 24-month warranty. In addition, the company's general repair and sales services include test-centre verification, express service options and warranty periods of up to 36 months, providing additional security for operators managing ageing HMI equipment.

Is 6AV6545-0BA15-2AX0 still available?

Yes. Through EICHLER, several procurement and service options remain available for this part number, including repair, exchange units, used devices and new devices. This is particularly important for discontinued HMIs, as availability is no longer determined solely by the purchase of new units, but also by the ability to bridge failures quickly through function-tested replacement devices or repair services. For B2B customers, this provides significantly greater operational security in existing installations than relying solely on the original manufacturer's product status.

Is there an official Siemens successor for the TP170A?

Siemens identifies the TP177A as an innovated replacement and a cost-optimised successor to the TP170A. This is an important reference point for both purchasing and technical departments, but it does not replace a detailed technical evaluation. When migrating to the TP177A, the project configuration, communication setup and display objects within the WinCC flexible environment must be carefully reviewed to ensure seamless integration into the target installation. In this context, "successor" should not be interpreted as automatically plug-and-play compatible, but rather as a manufacturer-defined migration path.

Which software is used to configure the 6AV6545-0BA15-2AX0?

According to Siemens, the TP170A can be configured using ProTool/Lite from Version 5.2 SP1 and WinCC flexible Compact from Version 2004 onwards. For operators of older machines, this is particularly important because the availability of the original engineering environment often determines whether repair, replacement or migration is the most practical option. Before procuring a replacement device, it is therefore advisable to verify that the project files, engineering PC and appropriate communication adapters are still available. Without a secured project environment, replacing the device becomes significantly more complex and carries a higher level of risk.

Which controllers and communication interfaces are supported by the TP170A?

The device was designed for traditional serial and fieldbus-based HMI communication. Siemens identifies MPI/PROFIBUS DP as the primary communication interface and also describes project engineering and communication options via RS232, RS422/RS485 and optional TTY, depending on the application and selected driver. Supported controller families include SIMATIC S7-200, S7-300 and S7-400, as well as other control systems through the appropriate communication drivers. For spare-parts procurement, this is important because not only the part number must match, but also the existing communication architecture of the machine or system.

Can an existing TP170A project be migrated to a newer panel?

Yes, in principle. Siemens describes a device switch procedure within the WinCC flexible environment for migration to successor devices. However, project-specific characteristics must be carefully evaluated. Siemens notes in its migration documentation that certain objects and display elements are device-dependent. As a result, a migration project involves much more than a simple hardware replacement. Communication settings, screens, objects and operating behaviour all need to be reviewed and validated. For production managers, this is the key factor when assessing the potential downtime risk and commissioning effort associated with a migration project.

When is repair more beneficial than replacement or purchasing another device?

A repair is often the preferred option when the original device should remain integrated into the existing installation, including its mounting dimensions and project configuration. An exchange unit is advantageous when machine downtime must be minimised and the defective assembly can be returned afterwards. Function-tested used devices are particularly attractive when obsolescence makes procurement difficult and identical spare units need to be held in stock. New devices are appropriate when an unused unit is specifically required and compatible stock remains available. EICHLER clearly presents these options as practical methods for maintaining availability despite product discontinuation and unexpected equipment failures.