Siemens 6AV6641-0CA01-0AX0 TP177A

Name: Siemens 6AV6641-0CA01-0AX0 TP177A
Brand: Siemens
SKU: 6AV6641-0CA01-0AX0
Availability: InStock

Price range: € 305,00 through € 625,00

Condition

Clear

SKU: 6AV6641-0CA01-0AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6641-0CA01-0AX0 is a TP177A touch panel HMI device belonging to the SIMATIC HMI 177 series, manufactured by Siemens. It is a compact operator panel designed for machine-level visualization and control tasks in industrial automation environments. This unit features a 5.7-inch STN color display and is operated via a resistive touch screen interface.

The TP177A supports communication via MPI and PROFIBUS-DP interfaces, enabling direct integration with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs. It is configured using WinCC flexible 2005 or later engineering software. The panel operates on a 24 V DC supply and is rated IP65 on the front face, providing protection against dust and water ingress in industrial environments. Internal memory supports the storage of project data, recipes, and alarm logs.

The TP177A is widely deployed in machine building, packaging machinery, conveyor systems, and general factory automation applications. Its compact form factor and straightforward touch interface make it suitable for panel-mount installations where space is limited. The device is particularly common in small to mid-scale automation systems that require a reliable and cost-effective operator interface.

Technical Specifications

Display Size	5.7 inch
Display Type	STN color
Display Colors	256 colors
Display Resolution	320 x 240 px (QVGA)
Touch Technology	Resistive touch screen
Input Voltage	24 V DC
Power Consumption	Max. 6 W
Communication Interface	MPI, PROFIBUS-DP
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
Mounting	Panel mounting
Certifications	CE, UL, cULus
Engineering Software	WinCC flexible 2005 or later

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI or PROFIBUS-DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both devices if necessary.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI lost communication with the configured controller.
Inspect physical cabling and connectors. Verify bus termination and cable shielding. Check PLC is in RUN mode and confirm network addresses are correct.
Event ID: 20000: Project download error. Transfer of the HMI project from the engineering PC to the panel failed.
Ensure the panel is in Transfer mode. Verify the communication cable and PC interface settings. Check that the WinCC flexible project is compatible with the TP177A firmware version.
Event ID: 40000: System memory low. Available memory on the HMI device is insufficient for the current project or runtime data.
Reduce project size by removing unused screens, images, or data logs. Archive or clear alarm and data logs stored on the device.
Event ID: 50000: Firmware update error. An error occurred during a firmware update attempt on the panel.
Retry the firmware update using the correct firmware version for the TP177A. Ensure stable power supply during the update process and use the ProSave tool.
Event ID: 60000: Tag read/write error. A configured tag could not be read from or written to the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 70000: Backup/restore error. An error occurred during a project backup or restore operation.
Check the integrity of the backup file. Ensure sufficient memory is available on the target device. Retry using ProSave with the correct device type selected.

Frequently Asked Questions

Which PLCs are compatible with the TP177A 6AV6641-0CA01-0AX0?

The TP177A is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS-DP communication interfaces. It can also communicate with S7-200 via a dedicated PPI connection.

What engineering software is required to configure the TP177A?

The TP177A is configured using Siemens WinCC flexible 2005 or a later version. The ProSave tool is used for firmware updates and backup/restore operations.

What is the input voltage for the TP177A?

The TP177A operates on a 24 V DC power supply. Ensure the supply is within the specified tolerance range to avoid damage to the unit.

What is the IP protection rating of the TP177A?

The front face of the TP177A is rated IP65, providing full protection against dust and protection against low-pressure water jets. The rear of the unit is rated IP20.

Can the TP177A display be used in portrait orientation?

The TP177A is designed for landscape orientation and does not natively support portrait mode rotation in the standard firmware configuration.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuse or incorrect polarity on the supply connection.

Correct the supply voltage or polarity. Replace the internal fuse if blown. If the backlight has failed, the display module or backlight inverter may require replacement.

Touch screen does not respond or responds inaccurately

Check whether the touch screen is physically damaged or contaminated. Attempt to recalibrate the touch screen via the Control Panel in the Start Center menu.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen calibration from the device's Start Center. If calibration fails repeatedly, the touch screen digitizer may need replacement.

HMI cannot establish communication with the PLC

Verify MPI or PROFIBUS-DP cable connections, bus termination, and that the PLC address configured in the HMI project matches the actual PLC station address.

Correct any address mismatches in the WinCC flexible project and re-download. Replace or reseat the communication cable. Ensure bus termination resistors are correctly placed at both ends of the network.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode via the Start Center. Check the PC communication settings and cable type being used for the transfer.

Switch the panel to Transfer mode manually. Verify the correct COM port or USB-to-MPI adapter settings in WinCC flexible. Ensure the project firmware version matches the panel firmware version.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage drops or ripple, which can cause instability. Inspect the project for memory overload or corrupted project data.

Stabilize the power supply and ensure it meets the current requirements of the panel. Re-download a verified project from WinCC flexible. If the issue persists, perform a factory reset and reload the project.

Condition	Repair, Used, Refurbished, New in box (sealed)