Siemens 6AV6355-1AA47-7EM3 OP 177B

€ 2.995,00

SKU: 6AV6355-1AA47-7EM3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7EM3 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens. It is a compact, panel-mounted human-machine interface designed for machine-level visualization and operator control tasks. The OP 177B series sits within the Siemens SIMATIC HMI product line and provides a combination of touch and key-based operation for flexible use in industrial environments.

The 6AV6355-1AA47-7EM3 features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA), supporting up to 256 colors. It is equipped with both a touch screen and membrane keypad, offering dual input methods. The panel supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) communication interfaces, enabling integration with a wide range of Siemens SIMATIC S7 controllers. It includes 512 KB user memory for project data and runs on a 24 V DC supply. The unit is rated IP65 on the front face, providing protection against dust and water ingress in demanding environments.

The OP 177B is widely used in machine building, automotive manufacturing, food and beverage processing, and packaging industries. It is particularly suited for applications requiring local operator control and status monitoring at the machine level, where a compact footprint and robust construction are essential. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for both new installations and retrofit projects.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Display Type	STN color
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 14 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP)
User Memory	512 KB
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

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC controller.
Check the communication cable and connections. Verify the MPI or PROFIBUS address settings on both the HMI and PLC. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during runtime.
Inspect physical wiring and connectors. Check for address conflicts on the bus. Restart the HMI and PLC if the connection is not re-established automatically.
Event ID: 20000: Project download error — the project could not be transferred to the HMI panel.
Verify the transfer cable or Ethernet connection. Ensure the panel is in Transfer mode before initiating download from WinCC flexible or TIA Portal.
Event ID: 40000: System memory low — available memory for runtime project data is insufficient.
Reduce the project size by removing unused screens, tags, or graphics. Perform a full project download to clear fragmented memory.
Event ID: 50000: Operating system error — internal firmware or OS fault detected.
Perform a panel reset. If the fault persists, update or reinstall the panel firmware using ProSave or WinCC flexible.
Event ID: 60000: Configuration error — the loaded project is incompatible with the current panel firmware version.
Check the firmware version of the panel and the WinCC flexible project version. Update the panel firmware or recompile the project with a compatible software version.
Event ID: 70000: Backup battery low or missing — the real-time clock backup battery voltage is below threshold.
Replace the internal backup battery with the correct Siemens replacement battery. Refer to the OP 177B operating instructions for battery replacement procedure.

Frequently Asked Questions

Which communication interfaces does the OP 177B (6AV6355-1AA47-7EM3) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) interfaces. This allows direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers via appropriate drivers.

Which software is used to configure and program the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2008 or later. It is not supported by TIA Portal; WinCC flexible is the required engineering tool for this panel generation.

What is the supply voltage for the 6AV6355-1AA47-7EM3?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is within the specified tolerance range as stated in the operating instructions.

Is the OP 177B front panel rated for wash-down or dusty environments?

Yes, the front face of the OP 177B is rated 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 the OP 170B?

The OP 177B is the successor to the OP 170B and is largely compatible in terms of form factor and communication interfaces. However, projects may need to be migrated using WinCC flexible migration tools before downloading to the OP 177B.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify that the supply is within the specified voltage range and that the connector is firmly seated.

Restore correct supply voltage. If the display remains blank with correct voltage present, the internal power supply or backlight inverter may be faulty and the unit should be sent for repair or replacement.

HMI panel does not communicate with the S7 PLC

Verify the MPI or PROFIBUS cable connections and check for correct bus termination at both ends. Confirm that the MPI/PROFIBUS address configured on the HMI matches the network settings.

Correct any address conflicts, replace damaged cables, and ensure proper bus termination resistors are in place. Restart both the HMI and PLC after making changes.

Touchscreen input is inaccurate or unresponsive

The touchscreen may require recalibration, or the touch surface may be contaminated. Check for physical damage to the touch overlay.

Perform a touchscreen recalibration via the panel's Start Center or Control Panel settings. Clean the touch surface with a soft, dry cloth. If the issue persists, the touch overlay may need replacement.

Project download fails or transfer cannot be initiated

Confirm the panel is set to Transfer mode. Check the Ethernet or MPI cable connection between the programming PC and the HMI panel. Verify firewall settings on the PC are not blocking the transfer.

Switch the panel to Transfer mode via the Start Center. Use the correct transfer settings in WinCC flexible matching the communication interface in use. Disable PC firewall temporarily to test if it is blocking the connection.

Panel repeatedly restarts or shows a system error on boot

This may indicate corrupted firmware or a failed project file. Check if the panel enters the Start Center or loops in a restart cycle.

Boot into the Start Center by holding the appropriate key combination during power-on. Use ProSave to reinstall the panel firmware via Ethernet or MPI. After firmware restoration, re-download the project from WinCC flexible.

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