Siemens 6AV6344-2AD34-0MG6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD34-0MG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD34-0MG6 is an OP 177B operator panel belonging to the SIMATIC HMI family, designed for machine-level visualization and operator control tasks. This unit features a monochrome or color display and is part of the comfort-oriented panel range that bridges basic text-based operation with graphical HMI functionality. It is a compact panel intended for direct integration into control cabinets and machine fronts.

The OP 177B (6AV6344-2AD34-0MG6) is equipped with a 5.7-inch STN display and supports communication via PROFIBUS DP and MPI interfaces, enabling direct connection to Siemens S7-200, S7-300, and S7-400 PLCs without additional gateways. The panel runs on WinCC flexible runtime and supports configuration via WinCC flexible engineering software. It includes a membrane keypad with function keys, USB interface for project transfer and data backup, and an integrated real-time clock. The unit operates on 24 V DC supply and is rated IP65 on the front face for protection against dust and water ingress.

The OP 177B is widely used in manufacturing automation, machine building, and process control applications where a reliable and cost-effective operator interface is required. It is commonly found on packaging machinery, conveyor systems, injection molding machines, and general-purpose industrial equipment. Its compatibility with the broad SIMATIC S7 PLC range and support for WinCC flexible makes it a practical choice for system integrators working within Siemens automation environments.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Resolution	320 x 240 px (QVGA)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	PROFIBUS DP, MPI, USB
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
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and 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 PROFIBUS/MPI cable connections and termination resistors. Verify the PLC address settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI lost communication with the configured controller.
Inspect cable integrity and connector pins. Check bus termination and address conflicts on the PROFIBUS/MPI network. Restart both HMI and PLC if necessary.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Verify USB or MPI transfer settings in WinCC flexible. Ensure the panel is in transfer mode before initiating download. Check cable and port functionality.
Event ID: 40000: Tag read/write error. The HMI cannot read from or write to a configured PLC tag.
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: 50000: System memory low. The panel runtime memory is approaching capacity.
Reduce the number of active screens, logged data, or alarm entries. Optimize the WinCC flexible project to reduce memory usage.
Event ID: 60000: Internal device error or hardware fault detected on the operator panel.
Perform a panel restart. If the error persists, back up the project and perform a factory reset. Contact Siemens technical support or arrange for unit repair if fault continues.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms exceeds the buffer capacity of the panel.
Acknowledge and clear existing alarms. Review alarm configuration in WinCC flexible to reduce simultaneous alarm triggers or increase buffer size settings.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6344-2AD34-0MG6)?

The OP 177B is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with S7-1200 and S7-1500 controllers in some configurations using appropriate drivers in WinCC flexible.

What software is used to configure and program the OP 177B?

The OP 177B is configured using Siemens WinCC flexible engineering software. Projects are transferred to the panel via USB or MPI connection.

What is the supply voltage for the 6AV6344-2AD34-0MG6?

The panel operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI operator panels.

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

The front face of the OP 177B is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for industrial cabinet mounting.

Can the OP 177B project be transferred via USB?

Yes, the OP 177B features a USB interface that allows project transfer from a PC running WinCC flexible. The panel must be set to transfer mode before initiating the download.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals. Measure voltage at the panel connector with a multimeter. Inspect internal fuse if accessible.

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

HMI shows 'No connection to PLC' message at runtime

Verify the PROFIBUS or MPI cable is securely connected at both the HMI and PLC ends. Check bus termination resistors are fitted at both ends of the network. Confirm the PLC node address matches the address configured in the WinCC flexible project.

Correct any address mismatches in the project configuration. Replace damaged cables or connectors. Ensure bus termination is active only at the physical ends of the network segment.

Project download fails or transfer does not start

Confirm the panel is in transfer mode (accessible via the Start Center or by pressing the appropriate key combination during boot). Check the USB cable and port on both the PC and panel.

Switch the panel to transfer mode before initiating the download from WinCC flexible. Try a different USB cable or port. If using MPI transfer, verify the PC adapter settings and baud rate match the project configuration.

Touchscreen or function keys not responding correctly

Check for physical damage to the membrane keypad or front panel. Verify the project configuration for key assignments. Perform a panel restart to rule out a runtime freeze.

Recalibrate the touch interface if available in the panel settings. If specific function keys are unresponsive, inspect the membrane keypad for wear or damage and replace if necessary.

Panel repeatedly restarts or crashes during operation

Check the 24 V DC supply for voltage fluctuations or noise using an oscilloscope or quality multimeter. Review the alarm and event logs on the panel for recurring system events.

Stabilize the power supply and add filtering if voltage ripple is detected. Reduce project complexity if memory overflow events are logged. If hardware faults are indicated, arrange for professional inspection and repair of the unit.

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