Siemens 6AV6355-1AA47-7DB2 OP 177B

€ 1.995,00

SKU: 6AV6355-1AA47-7DB2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7DB2 is an operator panel belonging to the SIMATIC HMI OP 177B series, part of Siemens' established line of panel-based human-machine interface devices. This unit provides a monochrome or color display interface for machine-level visualization and control, designed to integrate seamlessly within SIMATIC automation environments. The OP 177B series is engineered for demanding industrial conditions and is intended for use as a standalone operator panel connected to SIMATIC S7 PLCs and other compatible controllers.

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 network architectures. The panel is configured using Siemens WinCC flexible engineering software, allowing the creation of process screens, alarm management, trend displays, and recipe handling. It offers a membrane keypad with function keys for operator input, onboard flash memory for project storage, and supports multiple language configurations for international deployments. The unit operates on a 24 V DC supply and meets relevant CE and UL certification requirements.

The OP 177B is widely deployed in machine automation, packaging machinery, conveyor systems, and process plant environments where a robust, panel-mounted HMI is required. Its compatibility with the SIMATIC S7-300 and S7-400 controller families makes it a common choice for retrofit and new-build machine control panels. The panel's compact form factor and front-face IP65 protection rating make it suitable for installation in control cabinet doors in environments with exposure to dust and water spray.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45)
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 60 °C
Relative Humidity	10% to 90%, non-condensing
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL
Series/Product Family	SIMATIC HMI OP 177B
Engineering Software	WinCC flexible 2008 or later

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during operation.
Check MPI/PROFIBUS DP or Ethernet cable connections and verify PLC address settings in the project configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Communication timeout occurred between the HMI panel and the configured controller.
Verify network cable integrity, check baud rate and station address settings on both the HMI and PLC. Restart both devices if the issue persists.
Event ID: 20000: Project download failed or project data on the panel is corrupt or missing.
Re-download the project from WinCC flexible to the panel via Ethernet or MPI. Ensure the WinCC flexible version matches the panel firmware version.
Event ID: 40000: Panel operating system or firmware version mismatch detected.
Update the panel firmware using the Siemens ProSave tool or via WinCC flexible to match the version required by the project.
Event ID: 50000: Internal flash memory error or project storage fault detected.
Perform a panel reset to factory defaults using the Control Panel in the Start Center, then re-download the project. If the fault persists, the panel may require servicing.
Event ID: 60000: Screen saver or backlight timeout has activated, display appears blank.
Press any function key or touch the keypad to wake the display. Adjust the screen saver timeout settings in the panel Control Panel if required.
Event ID: 70000: Recipe data read/write error occurred during recipe transfer between HMI and PLC.
Check recipe configuration in WinCC flexible, verify PLC data block addresses are correct and accessible, and ensure sufficient memory is available on the panel.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1AA47-7DB2) support?

The OP 177B supports MPI and PROFIBUS DP interfaces as well as an Ethernet (RJ45) port, allowing connection to SIMATIC S7 PLCs and other compatible controllers over multiple network types.

Which engineering software is used to configure this panel?

The panel is configured using Siemens WinCC flexible. The project is created on a PC and downloaded to the panel via Ethernet or MPI connection.

What is the supply voltage for the 6AV6355-1AA47-7DB2?

The panel operates on a 24 V DC supply voltage, which is the standard supply used across the SIMATIC HMI panel range.

Is the OP 177B compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the OP 177B is fully compatible with SIMATIC S7-300 and S7-400 controllers via MPI, PROFIBUS DP, or Ethernet, and can also communicate with S7-1200 controllers via Ethernet with appropriate driver configuration.

What is the front-face protection rating of this panel?

The front face of the OP 177B carries an IP65 protection rating, making it suitable for installation in environments with dust and water spray exposure when correctly panel-mounted with the supplied seal.

Troubleshooting

Display remains blank after power is applied

Check that 24 V DC is present at the power supply terminals. Verify that the screen saver has not activated. Inspect the internal backlight by listening for the startup chime or checking if the Start Center appears briefly.

Restore 24 V DC supply if absent. If the backlight has failed, the panel will require backlight or display replacement. If the screen saver is active, press any key to wake the display.

Panel fails to communicate with the PLC after startup

Verify the MPI or PROFIBUS DP address configured in the HMI project matches the physical address set on the PLC. Check cable connections and termination resistors on the PROFIBUS network. For Ethernet, verify IP address settings on both devices.

Correct any address mismatches in the WinCC flexible project and re-download. Replace damaged cables and ensure correct bus termination. Confirm Ethernet IP addresses are on the same subnet.

Project download from WinCC flexible fails or is interrupted

Check the USB or Ethernet connection between the engineering PC and the panel. Verify that the WinCC flexible version is compatible with the panel firmware version. Ensure the panel is in Transfer mode via the Start Center.

Switch the panel to Transfer mode manually from the Start Center. Update panel firmware using ProSave if a version mismatch exists. Use a direct Ethernet cable or known-good MPI adapter for the download.

Touchscreen or keypad inputs are not responding correctly

Check whether the function keys are physically damaged or contaminated. For touch-enabled variants, verify that the touch calibration has not drifted. Inspect for moisture ingress behind the front panel membrane.

Perform a touch recalibration from the panel Control Panel settings. Clean the membrane keypad surface. If physical damage or moisture ingress is confirmed, the front panel assembly will require replacement.

Panel repeatedly restarts or enters a boot loop

This may indicate a corrupt project file, a firmware fault, or a hardware fault on the main board. Check whether the panel reaches the Start Center before restarting, which would indicate a project-level issue rather than a hardware fault.

Boot into the Start Center and delete the existing project, then re-download a known-good project from WinCC flexible. If the restart loop occurs before the Start Center loads, perform a firmware recovery using ProSave. If the fault persists, the panel requires hardware inspection.

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