Siemens 6AV6344-2AD24-0CF7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD24-0CF7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD24-0CF7 is an OP 177B operator panel belonging to the SIMATIC HMI family of human-machine interface devices. This unit provides a monochrome or color graphical display with touch and key-based operation, designed for machine-level visualization and control tasks. It is part of the SIMATIC HMI Comfort and Mobile Panel generation and is configured and operated using Siemens WinCC flexible engineering software.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both touch screen and membrane keypad input. It is equipped with MPI/PROFIBUS DP and RS-422/RS-485 interfaces for PLC connectivity, along with a USB port and an Ethernet interface for network integration. The panel includes 6 MB of user memory for project data and recipes, and operates on a 24 V DC supply voltage.

The OP 177B is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments where a compact, robust operator interface is required. Its compatibility with Siemens S7-200, S7-300, and S7-400 PLCs, as well as third-party controllers via configurable drivers, makes it suitable for a broad range of industrial control applications. The panel's IP65 front protection rating ensures reliable operation in environments exposed to dust and water ingress.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels
Display Type	STN color
Input Method	Touch screen and membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
User Memory	6 MB
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB, Ethernet (RJ45)
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 2008 or later

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.
Check MPI/PROFIBUS DP or Ethernet cable connections. Verify PLC address settings and communication parameters in WinCC flexible project match the physical configuration.
Event ID: 10001: Communication timeout. The HMI panel lost connection to the PLC during operation.
Inspect cable integrity and connector seating. Check PLC operating state and ensure the PLC program is running. Verify network termination resistors are correctly set on PROFIBUS segments.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Ensure the panel is in Transfer mode. Verify the communication interface settings match between the engineering PC and the panel. Check USB or Ethernet cable connection used for transfer.
Event ID: 40000: Internal device error or hardware fault detected on the operator panel.
Perform a panel restart. If the fault persists, check the 24 V DC supply voltage at the panel connector. Contact Siemens technical support or arrange for unit repair/replacement.
Event ID: 50000: Illegal tag address. The HMI project references a PLC tag address that does not exist or is out of range.
Review the WinCC flexible project tag configuration. Correct the PLC address references and reload the project to the panel.
Event ID: 60000: Recipe data error. A recipe record could not be read from or written to the PLC or internal memory.
Check recipe configuration in WinCC flexible. Verify that the PLC data blocks referenced by the recipe are correctly defined and accessible.
Event ID: 70000: System memory low. Available user memory on the panel is insufficient for the loaded project or runtime data.
Reduce the project size by optimizing graphics, reducing the number of screens, or compressing image resources. Delete unused data records and archived logs from the panel memory.

Frequently Asked Questions

Which PLCs are compatible with the Siemens OP 177B (6AV6344-2AD24-0CF7)?

The OP 177B is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports connectivity to third-party PLCs through configurable communication drivers in WinCC flexible.

What engineering software is required to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are created on a PC and downloaded to the panel via USB, Ethernet, or MPI/PROFIBUS DP.

What is the supply voltage for the 6AV6344-2AD24-0CF7?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is within the specified tolerance range to guarantee reliable operation.

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

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Can the OP 177B communicate over Ethernet?

Yes, the OP 177B is equipped with an RJ45 Ethernet interface that supports communication with PLCs and network infrastructure, in addition to MPI/PROFIBUS DP and serial interfaces.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check for blown internal fuse or wiring fault on the supply line.

Restore correct 24 V DC supply voltage within specified tolerance. Replace any blown fuse with the correct rating. If the display backlight has failed, the panel will require repair or backlight replacement.

Panel fails to communicate with the PLC

Verify the MPI or PROFIBUS DP address configured in the WinCC flexible project matches the physical PLC address. Inspect cable connections and check bus termination resistors at both ends of the PROFIBUS segment.

Correct address mismatches in the WinCC flexible project and reload. Replace damaged communication cables. Ensure PROFIBUS termination is active only at the two physical ends of the bus segment.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt a touchscreen recalibration from the panel's system settings menu.

Clean the touch surface with a soft, dry cloth. Perform touchscreen calibration via the Control Panel in the panel's Start Center. If calibration fails repeatedly, the touch overlay may require replacement.

Project transfer to panel fails during download

Confirm the panel is set to Transfer mode. Verify that the communication interface selected in WinCC flexible matches the physical connection being used (USB, Ethernet, or MPI).

Switch the panel to Transfer mode via the Start Center. Match the transfer interface settings in WinCC flexible to the physical cable in use. Try an alternative cable or interface if the issue persists.

Panel displays 'No project' or resets to Start Center unexpectedly

This may indicate corrupted project data in panel memory, possibly caused by a power interruption during a previous download or a memory fault.

Re-download the WinCC flexible project to the panel using a stable power supply and reliable communication link. If corruption recurs, perform a factory reset of the panel and reload the project from scratch.

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