Siemens 6AV6344-2AD04-0CG7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD04-0CG7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD04-0CG7 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 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 and is configured and operated using 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 MPI and PROFIBUS DP communication interfaces, allowing direct integration with SIMATIC S7 PLCs. The panel includes function keys and a membrane keypad for navigation and input, and is equipped with a USB interface for data transfer and project download. It operates on a 24 V DC supply and is built to withstand industrial environments, carrying IP65 protection on the front face. The unit supports configuration via WinCC flexible 2008 or later.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and general machine-building industries where a compact, robust operator interface is required at the machine level. Its PROFIBUS DP connectivity makes it particularly suitable for integration into distributed automation architectures based on Siemens SIMATIC S7-300 and S7-400 controllers. The panel's combination of touch and key operation provides flexibility for environments where gloved operation or precise touch input may be required.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	Monochrome (blue/white)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, USB
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Panel Cutout	197 x 141 mm
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible or corrupt.
Re-download the project from WinCC flexible to the panel. Verify project compatibility with the panel firmware version.
Event ID: 20000: Communication connection to the PLC has been lost or cannot be established.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the panel configuration.
Event ID: 40000: Operating system error; internal system fault detected.
Perform a panel reset. If the fault persists, update or reinstall the panel firmware using ProSave.
Event ID: 50000: Data record transfer error; read or write operation to the PLC failed.
Check communication settings and PLC data block configuration. Ensure the data block referenced in the project exists and is accessible.
Event ID: 70000: Alarm buffer overflow; the number of pending alarms exceeds the buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration in WinCC flexible to reduce simultaneous alarm load.
Event ID: 80000: Recipe data error; recipe transfer to or from the PLC failed.
Verify recipe configuration and PLC data block assignments. Re-transfer the recipe data and check for address conflicts.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6344-2AD04-0CG7)?

The OP 177B is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It can also communicate with S7-200 PLCs and certain third-party controllers supported by WinCC flexible drivers.

What software is required to configure and program this panel?

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

What is the supply voltage for the 6AV6344-2AD04-0CG7?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is within the specified tolerance range to prevent operational faults.

Can the OP 177B be operated with touch input only?

The OP 177B supports both touch screen and membrane keypad operation. It is not a pure touch panel; the function keys and navigation keys are integral to its operation and cannot be fully replaced by touch input alone.

What is the front panel protection rating of this unit?

The front face of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for typical industrial machine environments.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector. Check for blown internal fuse or incorrect polarity connection.

Correct the supply voltage or polarity. Replace the internal fuse if blown. If the display backlight has failed, the backlight unit or the panel itself may require replacement.

Panel fails to communicate with the S7 PLC via PROFIBUS DP

Verify the PROFIBUS DP address set on the panel matches the configuration in WinCC flexible. Check cable termination at both ends of the PROFIBUS segment and inspect the connector for damaged pins.

Correct the PROFIBUS address in the panel startup menu or WinCC flexible project. Replace damaged connectors and ensure bus termination resistors are active only at the two physical ends of the bus.

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 Control Panel menu in the operating system.

Clean the touch surface with a soft, dry cloth. Perform touchscreen calibration via the SIMATIC HMI Control Panel. If calibration does not resolve the issue, the touch foil assembly may need replacement.

Project download via USB fails or is not recognized

Verify that the USB cable is functional and that the correct USB driver is installed on the engineering PC. Check that ProSave or WinCC flexible is using the correct transfer channel settings.

Use a known-good USB cable and reinstall the USB driver for the panel on the engineering PC. Switch the panel to Transfer mode manually before initiating the download from WinCC flexible.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage dips or instability under load. Inspect the project for memory overload or excessively large alarm or recipe configurations.

Stabilize the power supply and ensure it is rated for the panel's power consumption. Optimize the WinCC flexible project to reduce memory usage. If the issue persists, update the panel firmware using ProSave.

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