Siemens 6AV6355-1AA47-7BE1 OP 77A

€ 1.995,00

SKU: 6AV6355-1AA47-7BE1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7BE1 is an operator panel belonging to the OP 77A series within the Siemens SIMATIC HMI product family. This compact panel operator unit is designed for machine-level human-machine interface applications, providing operators with a straightforward interface for monitoring and controlling industrial processes. The OP 77A series is part of the broader SIMATIC HMI Basic Panels generation and is engineered for integration into standard control cabinet doors and machine panels.

The 6AV6355-1AA47-7BE1 features a monochrome LCD display and a membrane keypad with function keys, numeric keys, and system keys for direct operator input without requiring a touchscreen. It supports MPI and PROFIBUS DP communication interfaces for direct connection to Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel is configured using Siemens WinCC flexible software, allowing the creation of screens, alarms, recipes, and trend displays suited to the device's capabilities.

The OP 77A is widely deployed in manufacturing, packaging, material handling, and process automation environments where a cost-effective, robust operator interface is required at the machine level. Its compact form factor and keypad-based operation make it suitable for installations where space is limited or where touchscreen operation is not practical due to environmental conditions such as the presence of gloves or contaminants. The panel is commonly found on standalone machines and production lines across the automotive, food and beverage, and general manufacturing industries.

Technical Specifications

Display Type	Monochrome LCD
Display Size	4 inches
Communication Interface	MPI, PROFIBUS DP
Configuration Software	WinCC flexible 2008
Input Voltage	24 V DC
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
Series	SIMATIC HMI OP 77A

Common Error Codes & System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible with the panel firmware version.
Reload the project using a compatible version of WinCC flexible and ensure firmware is updated to match the project requirements.
Event ID: 10001: Communication connection to the PLC has been lost or cannot be established.
Check MPI or PROFIBUS DP cable connections, verify bus address settings on both the panel and PLC, and confirm the PLC is powered and in RUN mode.
Event ID: 20000: No project found on the device; the panel has started in transfer mode.
Transfer a valid project to the panel using WinCC flexible via MPI, PROFIBUS, or USB/serial connection.
Event ID: 20001: Project transfer failed due to a communication error during download.
Verify the transfer cable and interface settings, ensure the correct COM port or MPI address is selected in WinCC flexible, and retry the transfer.
Event ID: 40000: Alarm buffer overflow; the number of pending alarms has exceeded the panel's buffer capacity.
Acknowledge and clear existing alarms on the panel. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm triggers.
Event ID: 50000: Recipe data error; a recipe record could not be read or written correctly.
Check the recipe configuration in WinCC flexible for correct tag assignments and data types. Verify PLC tag values are within the defined limits.
Event ID: 60000: Internal device error or watchdog timeout detected.
Perform a power cycle of the panel. If the error persists, perform a factory reset and reload the project. Contact Siemens technical support if the fault recurs.

Frequently Asked Questions

Which PLCs are compatible with the Siemens OP 77A (6AV6355-1AA47-7BE1)?

The OP 77A is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces. It can also communicate with S7-200 via the PPI protocol.

What software is used to configure the OP 77A panel?

The OP 77A is configured using Siemens WinCC flexible 2008 or later. Projects are downloaded to the panel via MPI, PROFIBUS DP, or a serial/USB PC adapter.

What is the supply voltage for the 6AV6355-1AA47-7BE1?

The panel requires a 24 V DC supply voltage, which is the standard supply for SIMATIC HMI operator panels.

Does the OP 77A support touchscreen operation?

No, the OP 77A uses a membrane keypad with function keys, numeric keys, and system keys. It does not have a touchscreen display.

What is the front panel protection rating of the OP 77A?

The front panel of the OP 77A carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present.

Troubleshooting

Panel display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for correct polarity. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is within the specified tolerance. Replace any blown fuse with the correct rating. If the supply is correct and the display remains blank, the internal power supply or display backlight may require replacement.

Panel shows 'Connecting…' and cannot establish communication with the PLC

Verify the MPI or PROFIBUS DP cable is securely connected at both ends. Check that the bus address configured on the panel matches the project settings and does not conflict with other devices on the bus.

Correct any address conflicts, replace damaged cables, and ensure bus termination resistors are correctly placed at both ends of the PROFIBUS or MPI network. Confirm the PLC is powered and in RUN or STOP mode.

Project transfer from WinCC flexible fails repeatedly

Check the PC adapter type and interface settings in WinCC flexible. Confirm the correct COM port or USB adapter driver is installed and that the panel is in transfer mode.

Set the panel to transfer mode manually via the Start Center menu. Verify the PC adapter is functioning correctly by testing with another device. Reinstall the PC adapter driver if necessary and retry the transfer.

Function keys do not respond or produce incorrect actions

Check the project configuration in WinCC flexible to verify that function key assignments are correctly mapped to the intended actions or screens.

Re-download the project after correcting key assignments. If keys are physically unresponsive, inspect the membrane keypad for damage or contamination and replace the keypad assembly if required.

Panel restarts unexpectedly or enters an error loop on startup

Determine whether the panel is displaying a specific event ID or error message during the restart cycle. Check if the loaded project is compatible with the current panel firmware version.

Update the panel firmware using the Siemens ProSave tool and reload the project using a compatible version of WinCC flexible. If the issue persists after a firmware update and project reload, perform a factory reset via the Start Center.

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