SIEMENS 6AV6645-0AC01-0AX0

What is 6AV6645-0AC01-0AX0 and where is it used?

The 6AV6645-0AC01-0AX0 is a SIEMENS SIMATIC Mobile Panel 177 DP, designed for mobile machine operation and monitoring in industrial environments. It combines resistive touch control, a membrane keypad, and integrated operating elements such as an enabling switch, STOP button, handwheel, key switch, and illuminated pushbuttons.

This makes it particularly suitable for applications where operators need to work directly at the machine, for example during setup, maintenance, service work, or manual operation. According to Siemens documentation, the panel can be engineered with WinCC flexible Compact (from version 2005) and in TIA Portal V11 to V14. Because it is DP-oriented, it fits best into established SIMATIC environments and retrofit systems with existing PROFIBUS-based structures.

Overview of key technical data and what it means

The Mobile Panel features a 5.7-inch STN colour display with 320 × 240 pixels and 256 colours. For industrial use, it includes 14 function keys (8 of them with LEDs) and a resistive analogue touchscreen, designed for robust operation in demanding environments.

Communication is based on RS422 and RS485 (up to 12 Mbit/s) with PROFIBUS support, while Industrial Ethernet and USB are not available. This clearly indicates that the device is intended for classic serial and DP-based automation architectures.

It runs on Windows CE with a 200 MHz 32-bit RISC processor, and is specified for an operating temperature range of 0 to 40 °C. The safety-related design supports up to Performance Level d, which makes it suitable for machine-level safety-oriented operating concepts.

Product status, life cycle status and obsolescence

According to EICHLER data, this specific MLFB has an EOP (End of Production) status as of 01.10.2021. In addition, Siemens announced the end of availability for the Mobile Panel 177/277 family and associated connection boxes as of 01.10.2016.

For procurement, maintenance, and production planning, this means the risk related to failure, spare parts availability, and stocking strategy is significantly higher than for current HMI platforms.

Importantly, Siemens does not define a direct migration path to a KTP Mobile series for this exact device. Therefore, there is no officially verified 1:1 successor from the manufacturer. In practice, this shifts focus toward repair, exchange units, and strategic spare parts stocking.

Available EICHLER services and when they are relevant

For the 6AV6645-0AC01-0AX0, EICHLER offers repair, exchange, used units, and new units on request, along with optional test reports.

Repair is particularly suitable when the existing device should continue operating with the same project configuration and established operator logic. According to the service description, it includes technical cleaning, preventive maintenance, full functional testing, and at least a 24-month warranty.

An exchange unit is the best option in cases of urgent downtime, when a tested replacement is needed quickly. Used devices support cost-efficient operation of older systems or help build spare parts inventories. As of the reference date 23.04.2026, repair, exchange, and used units were typically available within 1–3 days, aimed at industrial customers.

Is 6AV6645-0AC01-0AX0 still an active Siemens product?

No. For this specific order number, an EOP date of 01.10.2021 is specified. In addition, Siemens announced the Mobile Panel 177/277 family as end-of-life already on 01.10.2016.

For operators, this mainly means today a higher procurement risk, longer sourcing times on the spare parts market, and increased relevance of repair, exchange, and spare parts stocking strategies.

Which software is required for engineering, service, and legacy systems?

The product documentation specifies WinCC flexible Compact (from version 2005) as well as TIA Portal V11 to V14. Technical data also list WinCC flexible Compact, Standard and Advanced, and in TIA Portal WinCC Comfort, Advanced and Professional as supported environments, while WinCC Basic is not supported.

For operators of legacy systems, this is important because the correct engineering environment determines whether project maintenance, transfer, and service operations can be carried out without media breaks.

Is there a direct Siemens successor for 6AV6645-0AC01-0AX0?

There is no clearly defined 1:1 successor for this order number from Siemens. In the official release for Mobile Panels of the second generation, Siemens explicitly states that there is no migration path to KTP-Mobile for 6AV6645-0AC01-0AX0.

This means a simple replacement is not possible without technical evaluation and project adaptation. For modernization projects, the machine architecture, communication system, and safety functions must therefore always be assessed individually.

When is repair more suitable than replacement or refurbished units?

Repair is especially suitable when the existing operating concept must remain unchanged and the machine needs to return quickly to operation with the same device type. Exchange units are preferable when downtime is critical and an immediately tested replacement is required. Refurbished units are useful for economically maintaining older systems or building spare part inventories.

On the EICHLER product page, all three options are available for this MLFB, and a test report can be provided as well.

Is the Mobile Panel suitable for safety-related machine operation?

Yes. The device is clearly designed for machine-level operation. This is supported by integrated elements such as an enabling switch, STOP button, handwheel, key switch, and illuminated pushbuttons.

According to technical specifications, the panel is suitable for safety-related applications up to Performance Level d (ISO 13849-1) in safety mode. However, the actual machine integration and safety validation must always be assessed on a system-specific basis.

What should procurement and maintenance pay special attention to today?

Key factors are the exact order number 6AV6645-0AC01-0AX0, the DP-based version, the integrated operator elements, the correct connection box, and the required engineering environment.

From a procurement perspective, it is also important to determine whether a tested device, an exchange unit, or a repair is the most economical solution. Technically, the panel is based on RS422/RS485 and PROFIBUS, and does not support Industrial Ethernet or USB.

For legacy systems, this verification is essential to avoid incorrect purchases and unnecessary downtime.