Siemens 6AV6344-2AD34-0MF7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD34-0MF7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD34-0MF7 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome or color display with touch and key-based operation, serving as a compact and robust panel for process visualization and control. It is part of Siemens' established SIMATIC HMI product line, engineered for use in industrial environments requiring reliable operator interaction.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into existing Siemens automation architectures. It is configured using WinCC flexible engineering software and supports scripting, alarm management, recipe handling, and trend displays. The panel includes an integrated flash memory for project storage and operates on a 24 V DC supply, with a robust housing rated for panel mounting in industrial enclosures.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and process industries where compact operator panels are required at the machine level. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it suitable for a broad range of automation tasks. The combination of key-based and optional touch operation provides flexibility for environments where gloved operation or precise input is required.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45), RS-422/RS-485
Memory	4 MB flash (user memory)
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
Engineering Software	WinCC flexible 2005 or higher
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: No project loaded on the HMI device. The panel starts without a valid configuration.
Download a valid WinCC flexible project to the device using the engineering PC.
Event ID: 20000: Communication error between HMI and PLC. Connection to the configured controller cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections, verify PLC address settings, and confirm network parameters in the project configuration.
Event ID: 40000: System memory low. Available runtime memory is insufficient for the current project.
Reduce project size, limit the number of active screens or variables, and reload the optimized project.
Event ID: 50000: Tag read/write error. A configured variable cannot be read from or written to the PLC.
Verify PLC data block addresses, check tag configuration in WinCC flexible, and confirm PLC program is running.
Event ID: 60000: Project transfer interrupted. Data transfer between engineering station and HMI panel was aborted.
Restart the transfer, check the communication cable or network connection, and ensure the panel is in transfer mode.
Event ID: 70000: Backup/restore error. A backup or restore operation on the HMI device has failed.
Check available flash memory, verify the integrity of the backup file, and retry the operation.
Event ID: 30000: Date and time not set or battery-backed clock has failed. System time is invalid.
Set the correct date and time via the Control Panel on the HMI device. Replace the internal backup battery if the error persists after power cycle.

Frequently Asked Questions

Which engineering software is required to configure the OP 177B (6AV6344-2AD34-0MF7)?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via MPI, PROFIBUS DP, or Ethernet connection.

Which PLCs are compatible with the Siemens OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as other controllers supported via the available communication interfaces including MPI, PROFIBUS DP, and Ethernet.

What communication interfaces are available on the 6AV6344-2AD34-0MF7?

This panel provides MPI/PROFIBUS DP (RS-485) and Ethernet (RJ45) interfaces, allowing integration into both legacy and modern Siemens automation networks.

What is the operating voltage of the OP 177B?

The OP 177B operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI panels used in industrial control cabinets.

Does the OP 177B support recipe and alarm management functions?

Yes, the OP 177B supports recipe management, alarm/event logging, trend displays, and scripting functions, all configured through WinCC flexible engineering software.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply connector on the rear of the panel. Check the internal fuse and verify the power source is stable.

Ensure the 24 V DC supply is within tolerance. Replace the internal fuse if blown. If the backlight has failed, the display unit or backlight inverter may require replacement.

HMI panel fails to communicate with the PLC

Check the MPI/PROFIBUS DP or Ethernet cable for physical damage. Verify the PLC station address and baud rate settings match those configured in the WinCC flexible project.

Correct any address or baud rate mismatches in the project configuration. Replace the communication cable if damaged. Confirm the PLC is in RUN mode and the network is properly terminated.

Touchscreen or keys not responding correctly

Check for physical damage to the keypad membrane or touchscreen surface. Perform a touchscreen calibration via the Control Panel on the HMI device.

Recalibrate the touchscreen through the device Control Panel. If keys are unresponsive, inspect the keypad connector internally. Replace the keypad membrane or touchscreen assembly if calibration does not resolve the issue.

Project transfer from engineering PC fails

Verify the panel is set to Transfer mode. Check the communication cable between the PC and the HMI panel, and confirm the correct interface (MPI, PROFIBUS, or Ethernet) is selected in WinCC flexible.

Restart the panel in Transfer mode by accessing the loader menu. Re-establish the connection in WinCC flexible and retry the transfer. Replace the communication cable if the connection is intermittent.

Panel repeatedly restarts or shows a loader screen on boot

This may indicate a corrupted or missing project file in flash memory, or a hardware fault in the memory module.

Perform a fresh project download via WinCC flexible. If the issue persists, perform a factory reset through the loader menu and reload the project. If restarts continue, the flash memory or main board may require replacement.

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