Siemens 6AV6355-1AA47-7BD4 OP 177B

€ 1.895,93

SKU: 6AV6355-1AA47-7BD4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7BD4 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 combined keypad and display interface for machine-level operator control and monitoring, designed for integration into industrial control cabinets and machinery. It is a member of the SIMATIC HMI family, which is widely deployed across process and discrete manufacturing environments.

The OP 177B features a 5.7-inch STN display capable of rendering graphics and text, supporting both monochrome and color variants depending on the specific configuration. It communicates via MPI, PROFIBUS DP, and optionally Ethernet interfaces, enabling direct connection to SIMATIC S7 PLCs as well as third-party controllers. The panel is configured using WinCC flexible engineering software and supports recipe management, alarm logging, trend displays, and user administration functions. It operates on a 24 V DC supply and is rated to IP65 at the front face, making it suitable for panel-mount installations in industrial environments.

The OP 177B is commonly used in machine tool control, packaging machinery, conveyor systems, and general factory automation where a compact, robust operator interface is required. Its compatibility with the SIMATIC S7-300 and S7-400 controller families makes it a standard choice for system integrators working within the Siemens automation ecosystem. The panel's keypad-based input combined with graphical display capability suits applications where reliable tactile control is preferred over pure touchscreen operation.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 14 W
IP/Protection Rating	IP65 (front), IP20 (rear)
Communication Interface	MPI, PROFIBUS DP, RS-422/485
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mount
Engineering Software	WinCC flexible 2005 or higher
Series/Product Family	SIMATIC HMI OP 177B
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during runtime.
Check MPI or PROFIBUS DP cable connections, verify PLC address settings, and confirm the communication parameters in the project configuration match the hardware setup.
Event ID: 10001: Communication timeout detected on the configured PLC connection.
Verify network cabling integrity, check for address conflicts on the MPI/PROFIBUS network, and ensure the PLC is in RUN mode.
Event ID: 20000: Project download failed or project data is corrupted on the panel.
Re-download the project from WinCC flexible to the panel. If the issue persists, perform a factory reset and re-transfer the project.
Event ID: 40000: Internal panel memory error or configuration data could not be read.
Restart the panel. If the fault recurs, back up any data and perform a memory reset via the panel's Service menu, then reload the project.
Event ID: 50000: Alarm buffer overflow — the number of pending alarms has exceeded the configured buffer limit.
Acknowledge and clear active alarms. Review alarm configuration in WinCC flexible to increase buffer size or reduce alarm frequency.
System Error: BSOD / Kernel Fault: Operating system-level fault causing the panel to halt or restart unexpectedly.
Check for firmware compatibility with the loaded project version. Update panel firmware if required and verify the project was compiled with a compatible WinCC flexible version.
Event ID: 60000: Recipe data error — recipe records could not be read from or written to storage.
Check available panel memory, verify recipe configuration in the project, and ensure the storage medium (internal flash) is not full or corrupted.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B?

The OP 177B is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports connections to S7-200 and certain third-party controllers through configurable communication drivers in WinCC flexible.

What engineering software is required to configure the 6AV6355-1AA47-7BD4?

The panel is configured using Siemens WinCC flexible 2005 or a later compatible version. Projects are compiled on a PC and transferred to the panel via MPI, PROFIBUS, or a USB/serial connection.

What is the supply voltage for this operator panel?

The OP 177B operates on a 24 V DC supply. The permissible voltage range is typically 19.2 V DC to 28.8 V DC, allowing for standard industrial power supply tolerances.

Does the OP 177B support touchscreen input?

No, the OP 177B is a keypad-operated panel and does not feature a touchscreen. Operator input is performed via the integrated membrane keypad and function keys.

What is the front panel protection rating of the 6AV6355-1AA47-7BD4?

The front face of the panel is rated to IP65, providing protection against dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the voltage is within the 19.2–28.8 V DC range. Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. If voltage is correct and the display remains off, the internal power supply or backlight inverter may be faulty and the unit should be sent for repair or the backlight replaced.

Panel displays 'No connection to PLC' or communication error at startup

Verify MPI or PROFIBUS DP cable connections at both the panel and PLC ends. Check that the bus termination resistors are correctly placed at both ends of the network segment. Confirm the PLC address and baud rate match the project settings.

Correct any wiring faults, set proper bus termination, and ensure the communication parameters in the WinCC flexible project match the physical network configuration. Re-download the project if settings were changed.

Project cannot be transferred to the panel from WinCC flexible

Check the physical connection between the PC and panel (MPI adapter, PROFIBUS cable, or PC/PPI cable). Verify that the correct communication interface and transfer settings are selected in WinCC flexible. Confirm the panel is in Transfer mode.

Switch the panel to Transfer mode via the Start Center menu. Ensure the correct COM port or USB adapter driver is installed on the PC. Retry the transfer; if it fails, perform a panel reset and attempt again.

Touchkeys or function keys are unresponsive

Check for physical damage to the membrane keypad. Verify the project has the correct key assignments configured. Test whether the issue is present across all keys or only specific ones.

If only certain keys are unresponsive, the membrane keypad may be worn or damaged and requires replacement. If all keys are unresponsive, check for a firmware or project issue and re-download the project.

Panel restarts repeatedly or shows a continuous reboot loop

This may indicate a corrupted project file, incompatible firmware version, or a hardware fault. Check the firmware version on the panel and compare it with the WinCC flexible project version used to compile the application.

Boot the panel into the Service/Start Center mode by holding the appropriate key combination during startup. Perform a factory reset, update the firmware to a compatible version, and re-transfer the project from WinCC flexible.

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