Siemens 6AV6642-0DC01-1AX1 SIMATIC OP177B HMI Panel
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Product Information
The Siemens 6AV6642-0DC01-1AX1 is a SIMATIC HMI OP177B operator panel engineered for machine-level control, process monitoring, and user interaction in automated production environments. Operating on a 24 V DC power supply with a rated current draw of 0.24 A, this human-machine interface features a high-contrast 5.7-inch STN monochrome display in blue mode with a resolution of 320 x 240 pixels. Operator input is managed through a flexible dual-control interface that combines an analog resistive touchscreen with 32 tactile membrane function keys. Designed with an IP65, NEMA 4x, and NEMA 12 rated front panel measuring 243 mm by 212 mm, the device fits into a standard 229 mm by 196 mm enclosure cutout with an overall depth of 45 mm.
For network integration and field communication, the 6AV6642-0DC01-1AX1 features a 9-pin Sub-D interface operating over RS-422/RS-485 to support MPI, PROFIBUS DP at transmission speeds up to 12 Mbit/s, and PPI protocols for direct connection to SIMATIC S7-200, S7-300, and S7-400 controllers. It also incorporates an onboard USB host port and a card slot for an optional SIMATIC HMI MM Memory Card. Putting a replacement OP177B panel into service requires loading the compiled runtime project and parameter sets into its 2048 kB user memory, which can be completed by downloading the program via WinCC flexible software or restoring a full backup directly from a memory card. Technical support from ABC Industrial Parts can assist maintenance teams with project transfers and parameter extraction during replacement.
Runtime diagnostic monitoring is provided through an active system message buffer displayed on the screen and diagnostic views within WinCC flexible, alongside 26 user-assignable status LEDs integrated into the front membrane keys. First-line troubleshooting for an inactive or uncommunicating panel includes verifying the 24 V DC input power supply, checking 9-pin Sub-D connector pin seating, confirming fieldbus network cable termination, and validating network node address settings. When backlight degradation occurs over long operating hours or internal hardware failures prevent boot-up, component-level repairs cannot be completed in the field; installing a fully tested exchange unit or utilizing professional repair services through ABC Industrial Parts provides a direct solution to restore machine uptime.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 6AV6642-0DC01-1AX1 |
| Model / Type | OP177B DP T/K-6 MSTN |
| Product Family | SIMATIC HMI |
| Component Type | HMI Panel |
| Display Type | STN Monochrome (4 Blue Levels / 4 Greyscales) |
| Display Size | 5.7 in |
| Display Resolution | 320 x 240 pixels |
| User Memory | 2048 kB |
| Supply Voltage | 24 V DC |
| Rated Current | 0.24 A |
| Function Keys | 32 |
| Backlight Service Life (MTBF) | 50000 h |
| Interfaces | RS-422 / RS-485 (Sub-D 9-pin), USB |
| Supported Protocols | MPI, PROFIBUS DP (up to 12 Mbit/s), PPI |
| Front Housing Dimensions | 243 x 212 mm |
| Mounting Cutout Dimensions | 229 x 196 mm |
| Overall Depth | 45 mm |
| Weight | 1.0 kg |
| Front Protection Rating | IP65 / NEMA 4x / NEMA 12 |
Programming and Configuration
The Siemens 6AV6642-0DC01-1AX1 panel is configured using WinCC flexible 2005 Compact, Standard, or Advanced engineering software or higher. Screen designs, process tag assignments, recipe structures, and system message definitions are configured within the software project environment before compiling and downloading to the terminal.
The unit incorporates 2048 kB of onboard non-volatile flash memory dedicated to user project data and parameter storage. Downloads can be transferred over an MPI or PROFIBUS DP network connection or via the integrated USB host interface. Project images and machine parameters can also be stored on an optional SIMATIC HMI MM Memory Card to perform field restorations without requiring a PC.
Communication and System Integration
Network integration on the OP177B is established through a 9-pin Sub-D interface supporting RS-422 and RS-485 serial standards. The panel connects natively to SIMATIC S7-200, S7-300, and S7-400 PLCs using MPI, PPI, or PROFIBUS DP fieldbus networks with data transfer speeds reaching up to 12 Mbit/s.
In addition to serial fieldbus connectivity, the unit includes an onboard USB interface for connecting external hardware peripherals or facilitating local firmware and project maintenance operations.
Diagnostics and Status Indication
Real-time operational monitoring is supported directly on the 5.7-inch display via an internal system message buffer. Specialized diagnostic screens configured through WinCC flexible allow operators and technicians to inspect controller connectivity, review system logs, and identify active alarms.
Visual status feedback is enhanced by 26 integrated LEDs built into the membrane function keys on the front panel. These LEDs can be assigned directly to software tags and alarm states to give clear visual indications during operation.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Key LEDs | User-assigned - Configurable | 26 user-assignable LEDs integrated in function keys for status and alarm indication. |
Replacement and Spare Part Considerations
When installing a replacement 6AV6642-0DC01-1AX1 panel, confirm that the enclosure mounting cutout measures 229 mm by 196 mm and that the front panel seal is intact to preserve IP65, NEMA 4x, and NEMA 12 environmental sealing. Verify that the incoming supply delivers 24 V DC at a minimum rated current capacity of 0.24 A.
A replacement unit requires a complete project transfer before it can control machine functions. Technicians must reload the original runtime project using WinCC flexible software or restore the data using an optional SIMATIC HMI MM Memory Card. Network address assignments, fieldbus baud rates, and controller connections must match the original panel configuration to restore system communication.
Frequently Asked Questions
How do I transfer a project to a replacement 6AV6642-0DC01-1AX1 panel?
Projects are transferred using WinCC flexible 2005 Compact, Standard, or Advanced (or higher) over an MPI/PROFIBUS connection or the USB port. Alternatively, if a backup was stored on a SIMATIC HMI MM Memory Card, the backup can be restored directly to the replacement panel without using a PC.
What communication protocols does the Siemens OP177B 6AV6642-0DC01-1AX1 support?
The panel includes a 9-pin Sub-D interface supporting MPI, PROFIBUS DP (up to 12 Mbit/s), and PPI protocols for connection to SIMATIC S7-200, S7-300, and S7-400 PLCs.
What are the panel cutout dimensions for mounting this device?
The panel requires an enclosure cutout measuring 229 mm in width by 196 mm in height. The front housing measures 243 mm by 212 mm with an overall mounting depth of 45 mm.
Does this operator panel feature function key LEDs?
Yes, the front panel incorporates 26 user-assignable status LEDs built into its 32 membrane function keys, which can be configured in WinCC flexible for status and alarm notification.
What is the operating voltage requirement for the 6AV6642-0DC01-1AX1?
The unit operates on a 24 V DC power supply with a nominal current consumption rating of 0.24 A.
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Data backup and recovery
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Siemens.
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