Siemens 6AV6344-2AC14-0CG6 OP177B

€ 1.995,00

SKU: 6AV6344-2AC14-0CG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AC14-0CG6 is an OP177B operator panel belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome STN display with touch and key-based operation, enabling operators to monitor and control industrial processes directly at the machine. It is part of Siemens' established SIMATIC HMI portfolio, which is widely deployed across manufacturing and process automation environments.

The OP177B features a 5.7-inch STN monochrome display with a resolution of 320 x 240 pixels and supports both touch screen and function key input methods. It is equipped with MPI, PROFIBUS DP, and Ethernet (TCP/IP) communication interfaces, allowing integration with SIMATIC S7 PLCs and other compatible controllers. The panel operates on 24 V DC supply voltage and includes a USB interface for project transfer and data backup. Configuration is performed using WinCC flexible or TIA Portal engineering software.

The OP177B is typically deployed in discrete manufacturing, automotive assembly lines, packaging machinery, and process plant environments where a compact, robust operator interface is required at the machine level. Its combination of touch and key operation makes it suitable for applications where gloved operation or harsh environmental conditions are a consideration. The panel's PROFIBUS DP connectivity makes it particularly well-suited for integration into existing SIMATIC automation architectures.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels (QVGA)
Touch Technology	Resistive touch screen with function keys
Input/Operating Voltage	24 V DC
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), 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
Series/Product Family	SIMATIC HMI OP177B
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The configured connection cannot be established or has been interrupted.
Check MPI/PROFIBUS DP or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Confirm the PLC is in RUN mode.
Event ID: 10001: Connection to the PLC was established but has since been lost during operation.
Inspect communication cables for damage or loose connectors. Check for address conflicts on the network. Restart both the HMI panel and the PLC if the connection does not recover automatically.
Event ID: 40000: Project download error. Transfer of the HMI project from the engineering PC to the panel has failed.
Verify the transfer cable or network connection between the PC and the panel. Ensure the panel is in Transfer mode. Check that the WinCC flexible or TIA Portal project is compiled without errors before transfer.
Event ID: 20000: Tag read/write error. The HMI panel cannot read from or write to a configured PLC tag.
Verify the tag address in the HMI project matches the actual PLC data block or memory address. Check that the PLC program has not been modified in a way that removes or relocates the referenced tag.
Event ID: 50000: Internal system error on the HMI panel. A software or firmware fault has been detected.
Perform a panel restart. If the error persists, reload the HMI project. If the fault continues after project reload, consider performing a factory reset and re-transferring the project.
Event ID: 60000: Backup/restore error. A project backup or restore operation via USB or memory card has failed.
Check that the USB device or memory card is properly formatted and has sufficient free space. Ensure the backup file is not corrupted. Retry the operation with a different storage medium if necessary.
Event ID: 70000: Licence or runtime error. The panel runtime software has detected a licensing issue or an incompatible project version.
Verify that the project was created with a compatible version of WinCC flexible or TIA Portal. Check that the correct runtime version is installed on the panel. Update the panel firmware if required.

Frequently Asked Questions

Which PLCs are compatible with the Siemens 6AV6344-2AC14-0CG6 OP177B?

The OP177B is primarily designed for use with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with S7 controllers over Ethernet using the TCP/IP interface.

What engineering software is used to configure the OP177B?

The OP177B is configured using Siemens WinCC flexible 2008 or later. It is also supported in the TIA Portal environment via the WinCC flexible migration path.

What is the supply voltage for the OP177B panel?

The OP177B operates on a 24 V DC supply voltage. The power supply must be capable of providing sufficient current for the panel and any connected peripherals.

Does the OP177B support recipe and data logging functions?

Yes, the OP177B supports recipe management and data logging functions. Data can be stored internally or transferred to an external USB device for archiving and analysis.

What is the IP protection rating of the OP177B?

The front face of the OP177B is rated IP65, providing protection against dust and water jets. The rear of the unit is rated IP20, so adequate enclosure protection must be provided for the back of the panel.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check for correct polarity. Inspect the internal fuse if accessible. Verify that the supply voltage is within the specified tolerance range.

Correct any wiring errors or polarity reversal. Replace a blown supply fuse. If the supply voltage is correct and the display remains blank, the internal power supply or display backlight may have failed and the unit should be sent for repair or replacement.

HMI panel cannot communicate with the PLC

Check the MPI, PROFIBUS DP, or Ethernet cable connections at both the panel and PLC ends. Verify the bus address configured in the HMI project matches the physical address set on the PLC. Use a bus diagnostic tool to check for network errors or address conflicts.

Replace or reseat communication cables. Correct address mismatches in the HMI project or on the PLC hardware. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus segment.

Touchscreen does not respond or responds inaccurately

Check whether the touch area is physically damaged or contaminated. Attempt to recalibrate the touch screen through the panel's system settings menu. Verify that the correct touch driver is active in the panel runtime.

Clean the touch surface with a soft, dry cloth. Perform a touch screen calibration via the Control Panel or Start Center on the HMI. If calibration does not resolve the issue, the touch screen overlay may need to be replaced.

Project transfer from PC to panel fails repeatedly

Confirm the panel is set to Transfer mode via the Start Center. Check the USB or Ethernet connection between the engineering PC and the panel. Verify that the firewall or antivirus software on the PC is not blocking the transfer.

Set the panel to Transfer mode manually before initiating the download. Use a known-good USB cable or verify the Ethernet connection. Disable firewall rules that may block WinCC flexible or TIA Portal communication ports and retry the transfer.

Panel displays 'No project' or restarts continuously after power on

This typically indicates that the project stored in the panel memory has been corrupted or was not transferred successfully. Check the panel's internal memory status via the Start Center diagnostics.

Re-transfer the HMI project from the engineering PC using WinCC flexible or TIA Portal. If the panel memory appears to be faulty, perform a factory reset and then reload the project. Ensure the project is fully compiled and error-free before transfer.

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