Siemens 6AV6344-2AD04-0MG6 OP 177B

€ 2.495,00

SKU: 6AV6344-2AD04-0MG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD04-0MG6 is an OP 177B operator panel belonging to the SIMATIC HMI family. It is a compact, panel-mounted human-machine interface designed for machine-level visualization and operator control tasks. This unit features a monochrome STN display and is part of the Comfort/Mobile Panel generation targeting mid-range automation applications.

The OP 177B (6AV6344-2AD04-0MG6) is equipped with a 5.7-inch STN LCD display with a resolution of 320 x 240 pixels (QVGA) and supports up to 4 grey scales. It provides communication via MPI/PROFIBUS DP and RS-422/RS-485 interfaces, enabling direct connection to SIMATIC S7, S5, and third-party controllers. The panel includes 14 function keys with LEDs, a numeric keypad, and is configured using WinCC flexible software. It operates on 24 V DC supply and offers 512 KB user memory for project data.

The OP 177B is widely used in machine building, packaging machinery, printing equipment, and general factory automation where a robust, cost-effective operator interface is required. Its compact form factor and broad controller compatibility make it suitable for retrofitting existing installations as well as new machine designs. The panel's keypad-based operation is particularly suited to environments where touchscreen operation is impractical due to gloves or contamination.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	4 grey scales
Input/Operating Voltage	24 V DC
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485
User Memory	512 KB
Function Keys	14 (with LEDs)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10 % to 90 % (non-condensing)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Mounting	Panel mounting
Configuration Software	WinCC flexible 2005 or higher
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during operation.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify PLC address settings and communication parameters in the project configuration.
Event ID: 10001: Communication timeout: no response received from the configured controller within the defined timeout period.
Check network cabling, verify the PLC is in RUN mode, and confirm the station address and baud rate settings match between the OP 177B and the controller.
Event ID: 20000: Project download failed or project data is corrupted on the panel.
Re-download the project from WinCC flexible to the panel. Ensure the WinCC flexible version is compatible with the panel firmware version.
Event ID: 40000: System memory low: available user memory on the panel is insufficient for the current project.
Reduce the project size by removing unused screens, tags, or graphics. Ensure the project does not exceed the 512 KB user memory limit.
Event ID: 50000: Firmware version mismatch between the panel and the configuration software.
Update the panel firmware using ProSave or WinCC flexible to match the version required by the project. Ensure compatibility before downloading.
Event ID: 60000: Panel configuration mode active: no project loaded or panel is in transfer mode.
Download a valid project to the panel using WinCC flexible via MPI or RS-232 service interface. Confirm transfer settings are correct.
Event ID: 70000: Illegal tag value: a tag value received from the PLC is outside the configured limit range.
Check the PLC data source for the affected tag. Verify limit values configured in WinCC flexible match the expected PLC data range.

Frequently Asked Questions

Which configuration software is required for the OP 177B (6AV6344-2AD04-0MG6)?

The OP 177B is configured using Siemens WinCC flexible 2005 or later versions. ProSave can also be used for firmware updates and backup/restore operations.

Which controllers is the OP 177B compatible with?

The OP 177B supports SIMATIC S7-200, S7-300, S7-400, S5 series PLCs, as well as third-party controllers via the RS-422/RS-485 interface using appropriate communication drivers.

What is the communication interface available on this panel?

The 6AV6344-2AD04-0MG6 provides an MPI/PROFIBUS DP port and an RS-422/RS-485 serial interface, allowing flexible integration into various network topologies.

What is the front panel protection rating of the OP 177B?

The front panel of the OP 177B is rated IP65, making it resistant to dust ingress and low-pressure water jets, suitable for industrial panel door mounting.

Can the OP 177B be used as a replacement for older Siemens OP panels?

Yes, the OP 177B is designed as a functional successor to earlier SIMATIC OP panels such as the OP 17, and can often be used as a drop-in replacement with appropriate project migration in WinCC flexible.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the supply is within the specified tolerance. Inspect the panel for any visible damage to the power input terminals.

Ensure the 24 V DC supply is stable and within tolerance. If the supply is correct and the display remains blank, the internal power supply board or backlight may be faulty and the unit should be sent for repair or replacement.

Panel displays 'No project' or boots into transfer mode on every startup

The panel has no valid project stored in its user memory, or the project was lost due to a memory fault or improper shutdown.

Re-download the project from WinCC flexible to the panel via the MPI or RS-232 service interface. If the problem persists after download, the internal flash memory may be defective.

Communication fault with S7 PLC: connection cannot be established

Verify the MPI/PROFIBUS DP cable is correctly wired and terminated. Check that the panel's configured PLC address matches the actual PLC station address. Confirm baud rate settings are consistent across all network nodes.

Correct any wiring or termination issues. Adjust the station address and baud rate in the WinCC flexible project to match the PLC configuration, then re-download the project and restart the panel.

Function key LEDs do not illuminate or respond incorrectly

Check the PLC program to confirm that the bit addresses mapped to the function key LEDs are being written correctly. Verify the key assignment configuration in WinCC flexible.

Correct the PLC program logic or the key assignment in WinCC flexible. If LEDs fail to illuminate despite correct signals, the keypad membrane or LED driver circuit may be faulty and require hardware repair.

Panel touchscreen or keypad input is unresponsive

Determine whether the panel is frozen (no screen updates) or only the input is unresponsive. Check for active alarms or dialog boxes that may be blocking input. Attempt a warm restart via the panel's operating system menu.

Perform a controlled restart of the panel. If the keypad remains unresponsive after restart, recalibrate the input device settings or inspect the keypad membrane connector for damage or contamination.

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