Siemens 6AV6355-1AA47-7BD2 OP 177B

€ 1.373,60

SKU: 6AV6355-1AA47-7BD2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7BD2 is an operator panel belonging to the SIMATIC HMI OP 177B series, designed for machine-level human-machine interface applications. This unit is part of Siemens' SIMATIC HMI product line and provides a monochrome or color display interface for process visualization and control. The OP 177B series is engineered for integration into industrial control panels and machinery requiring reliable operator interaction.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into a wide range of Siemens automation architectures. The panel runs WinCC flexible runtime software and supports configuration via WinCC flexible engineering software. It includes USB ports for data transfer and peripheral connectivity, and is designed to operate within standard industrial temperature and humidity ranges. The unit supports recipe management, alarm logging, and trend display functions.

The OP 177B is widely used in manufacturing, process automation, and machine building industries where a compact and robust operator interface is required. It is suitable for applications such as packaging machinery, conveyor systems, and general-purpose machine control where operators need to monitor process values and adjust parameters. Its compatibility with SIMATIC S7 PLCs and support for PROFIBUS DP makes it a common choice in Siemens-based automation environments.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Touch Technology	Membrane keyboard with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45), RS-422/RS-485
USB Interface	1 x USB Type-A
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
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The connection to the configured communication partner has been interrupted.
Check the MPI/PROFIBUS DP or Ethernet cable connections. Verify the PLC is powered and running. Confirm the communication parameters (address, baud rate) match on both devices.
Event ID: 10001: Connection to the PLC was established but subsequently lost during operation.
Inspect cabling for intermittent faults. Check for electromagnetic interference sources near the communication lines. Verify PLC program is running and not in STOP mode.
Event ID: 20000: Project download error. The configuration project could not be transferred to the HMI panel successfully.
Ensure the correct transfer cable or Ethernet connection is used. Verify WinCC flexible project settings match the target device. Check available memory on the panel.
Event ID: 40000: System memory low. The available runtime memory on the HMI panel is insufficient for the loaded project.
Reduce the number of active screens, alarms, or data logs in the project. Archive or delete unnecessary data records stored on the device.
Event ID: 50000: Tag read/write error. A configured tag could not be read from or written to the connected PLC.
Verify the PLC data block and address referenced in the WinCC flexible project exist and are accessible. Check PLC program for correct data block definitions.
Event ID: 60000: Alarm buffer overflow. The number of pending or unacknowledged alarms has exceeded the buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm triggers or increase the alarm buffer size if possible.
Event ID: 70000: Recipe data error. A recipe record could not be read or written correctly.
Check the recipe configuration in WinCC flexible for correct tag assignments. Verify the target PLC data area is accessible and correctly sized for the recipe data.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1AA47-7BD2) support?

The OP 177B supports MPI/PROFIBUS DP and Ethernet (RJ45) communication interfaces, as well as RS-422/RS-485. This allows integration with SIMATIC S7 PLCs via MPI or PROFIBUS DP networks, or via Ethernet using the PROFINET/TCP-IP protocol.

Which engineering software is used to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible engineering software. The project is then transferred to the panel via Ethernet or a direct PC adapter connection.

What is the supply voltage for the 6AV6355-1AA47-7BD2?

The panel requires a 24 V DC supply voltage. Ensure the power supply is within the specified tolerance range to avoid operational issues.

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

Yes, the OP 177B is compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP connections, and also supports S7-200 and S7-1200 series via appropriate communication settings.

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 suitable for panel-mount installations where dust and water spray protection is required.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Measure voltage at the panel terminals to confirm correct supply level. Inspect the internal fuse if accessible.

Restore correct 24 V DC supply if voltage is absent or out of range. If supply is correct and display remains blank, the internal power supply board or backlight may be faulty and the unit should be sent for repair or the backlight replaced.

HMI panel shows 'No connection to PLC' or communication error on startup

Verify the MPI/PROFIBUS DP or Ethernet cable is securely connected at both the panel and PLC ends. Check that the PLC is powered on and in RUN mode. Confirm the communication address and baud rate settings in the WinCC flexible project match the PLC configuration.

Correct any mismatched communication parameters in the WinCC flexible project and re-download to the panel. Replace the communication cable if damaged. If using PROFIBUS, verify the bus termination resistors are correctly placed at both ends of the network.

Touchscreen or function keys not responding

Determine whether the issue is with the membrane keyboard or a specific key. Test multiple keys to identify if the fault is isolated or affects all inputs. Check for physical damage to the membrane overlay.

If a single key is unresponsive, the membrane keypad may be worn or damaged and requires replacement. If all inputs are unresponsive, perform a panel restart. If the issue persists, the input controller board may require repair or replacement.

Project cannot be transferred to the panel via WinCC flexible

Confirm the panel is in Transfer mode (accessible via the Start Center on the panel). Verify the Ethernet or MPI connection between the engineering PC and the panel. Check that the WinCC flexible project is configured for the correct target device type and version.

Set the panel to Transfer mode manually via the Start Center menu. Ensure the IP address or MPI address of the panel matches the transfer settings in WinCC flexible. Update WinCC flexible to a version compatible with the panel firmware if version mismatch is suspected.

Panel repeatedly restarts or crashes during operation

Check the 24 V DC supply for voltage fluctuations or drops under load. Review the alarm and event log for recurring system events prior to the restart. Assess whether the issue occurs on specific screens or actions within the project.

Stabilize the power supply by using a dedicated 24 V DC source with adequate current capacity. Simplify complex screens or reduce the number of simultaneously active tags if the crash is project-related. If hardware faults are suspected, the panel should be inspected and repaired by a qualified technician.

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