Siemens 6AV6355-1AA47-7DC5 OP 177B

€ 1.995,00

SKU: 6AV6355-1AA47-7DC5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7DC5 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 compact, panel-mounted interface for monitoring and controlling industrial processes. The OP 177B series bridges the gap between basic text-based panels and full graphical HMI systems, offering a monochrome or color display depending on the variant.

The 6AV6355-1AA47-7DC5 features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both touch and key-based operation, combining a touchscreen with configurable function keys for flexible operator interaction. It communicates via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration into a wide range of Siemens and third-party control architectures. The panel is configured using WinCC flexible 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 on the front face for protection against dust and water ingress.

The OP 177B is widely deployed in manufacturing, packaging, food and beverage, and process industries where a reliable, mid-range HMI solution is required at the machine level. Its combination of touch and function key input makes it suitable for environments where operators may be wearing gloves or where precise touchscreen interaction is not always practical. The panel's PROFIBUS DP connectivity makes it particularly well-suited for integration with SIMATIC S7-300 and S7-400 PLC systems commonly found in these industries.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels
Display Type	STN LCD
Touch Technology	Resistive touchscreen with membrane function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2008 or later
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been interrupted.
Check MPI/PROFIBUS DP or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both devices if necessary.
Event ID: 10001: Connection to PLC timed out. The HMI did not receive a response from the controller within the expected time window.
Verify the PLC is powered and in RUN mode. Check network cabling and bus termination. Confirm the station address and baud rate settings in the HMI project match the PLC configuration.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured process tag from the PLC.
Check that the tag address in the HMI project corresponds to a valid memory area in the PLC. Verify the PLC program has not been modified in a way that removes or relocates the referenced data block or variable.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to a configured process tag in the PLC.
Confirm the target tag address exists and is writable in the PLC. Check that the PLC is not in a mode that prevents external writes. Review access protection settings in the PLC program.
Event ID: 40000: Project download error. A project transfer from the configuration PC to the HMI panel failed or was interrupted.
Ensure the transfer cable or network connection between the PC and HMI is intact. Verify WinCC flexible is set to the correct transfer mode and that the HMI is in transfer mode. Retry the download.
Event ID: 50000: System memory low. The HMI panel is running low on available runtime memory, which may cause instability or loss of logging data.
Reduce the number of active alarms, trend logs, or recipe entries stored on the device. Archive and clear historical data. If the issue persists, review the project for memory optimization.
Event ID: 60000: Internal device error or hardware fault detected. The panel has identified an internal system error during self-diagnostics.
Perform a controlled restart of the HMI panel. If the error persists after restart, back up the project, perform a factory reset, and reload the project. Contact Siemens technical support if the fault recurs.

Frequently Asked Questions

What PLC systems is the OP 177B compatible with?

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 via Ethernet using supported drivers in WinCC flexible.

What software is required to configure the 6AV6355-1AA47-7DC5?

This panel is configured using Siemens WinCC flexible 2008 or a compatible version. Projects created in WinCC flexible can be transferred to the panel via Ethernet, MPI, or USB connection.

What is the supply voltage for this HMI panel?

The OP 177B operates on a 24 V DC supply voltage. Ensure the power source is within the specified tolerance range, typically 19.2 V DC to 28.8 V DC.

Is the front of the panel protected against dust and liquids?

Yes, the front face of the OP 177B is rated to IP65, providing full protection against dust ingress and protection against low-pressure water jets. The rear of the unit is rated IP20.

Can the OP 177B be used as a replacement for an OP 170B?

The OP 177B is the successor to the OP 170B and is largely compatible in terms of form factor and functionality. However, project migration from OP 170B to OP 177B should be performed in WinCC flexible to ensure full compatibility, as some configuration differences may exist.

Troubleshooting

Display remains blank after power is applied

Check the 24 V DC supply voltage at the power connector on the rear of the panel using a multimeter. Verify the supply is within the 19.2 V to 28.8 V DC range. Inspect the internal fuse if accessible.

Restore the supply voltage to within specification. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may have failed and the unit will require repair or replacement.

HMI panel shows 'No connection to PLC' or communication alarm at startup

Verify the MPI or PROFIBUS DP cable is securely connected at both the HMI and PLC ends. Check bus termination resistors are correctly placed at both ends of the bus segment. Confirm the station address and baud rate in the HMI project match the PLC settings.

Correct any wiring faults or address mismatches. Replace damaged cables. Ensure only the two physical end nodes on the bus have termination resistors enabled. Restart both the PLC and HMI after making corrections.

Touchscreen does not respond or responds inaccurately to touch input

Attempt to recalibrate the touchscreen through the panel's operating system settings menu, accessible during startup. Check for physical damage or contamination on the screen surface.

Perform a touchscreen calibration via the Control Panel in the HMI operating system. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen overlay may need to be replaced.

Project transfer from PC to HMI fails or times out

Confirm the HMI is set to transfer mode (accessible via the Start Center on the panel). Check the Ethernet or MPI cable connection between the PC and the panel. Verify the correct communication interface and IP address or station address are configured in WinCC flexible transfer settings.

Place the HMI in transfer mode before initiating the download. Use a known-good cable and verify network settings. Disable any firewall software on the PC that may be blocking the transfer. Retry the project download.

Alarm history or recipe data is lost after power cycle

Check whether the data storage is configured to use internal flash memory or an external memory card. Verify that the memory card, if used, is correctly seated and recognized by the panel.

Ensure the project is configured to save alarm logs and recipe data to non-volatile memory or an inserted memory card. Re-seat or replace the memory card if it is not being recognized. Review the WinCC flexible project settings for data persistence configuration.

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