Siemens 6AV6355-1CA47-7AA1 OP 177B

€ 2.070,40

SKU: 6AV6355-1CA47-7AA1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7AA1 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome or color display with touch and key-based operation, serving as a compact and robust panel for process visualization and control. It is part of Siemens' well-established SIMATIC HMI product line, offering reliable performance in demanding industrial environments.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into existing Siemens automation architectures. It is configurable using WinCC flexible engineering software and supports online and offline tag logging, alarm management, and recipe handling. The panel includes a membrane keypad with function keys in addition to touch input, providing redundant operator interaction methods. It operates on a 24 V DC supply and conforms to relevant EMC and safety standards for industrial use.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and process industries where a compact, panel-mount HMI is required at the machine level. It is compatible with Siemens S7-200, S7-300, and S7-400 PLCs, as well as third-party controllers via configurable drivers. Its combination of communication flexibility, robust construction, and WinCC flexible compatibility makes it suitable for both OEM machine builders and end-user installations requiring reliable operator interface solutions.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45), RS-422/RS-485
Memory	512 KB user memory (project), 256 KB recipe memory
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible with the panel firmware version.
Re-transfer the project using a compatible version of WinCC flexible. Ensure firmware and project versions match.
Event ID: 10001: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections. Verify PLC address settings and communication parameters in WinCC flexible.
Event ID: 10002: Tag read/write error; the panel cannot access a configured PLC tag.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory area. Check PLC program for address conflicts.
Event ID: 10003: Recipe data transfer error; recipe could not be written to or read from the PLC.
Check recipe configuration in WinCC flexible. Ensure the target PLC data area is accessible and not write-protected.
Event ID: 10004: Internal flash memory error; panel cannot read or write project or log data.
Perform a panel reset and re-transfer the project. If the error persists, the internal flash memory may require service or panel replacement.
Event ID: 10005: Alarm buffer overflow; the number of pending alarms exceeds the panel buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration in WinCC flexible to reduce simultaneous alarm triggers.
Event ID: 10006: Firmware update failed or interrupted during transfer.
Repeat the firmware update procedure using the correct firmware file for the OP 177B. Ensure stable power supply during the update process.
Event ID: 10007: Touchscreen calibration error; touch input is not responding correctly.
Perform touchscreen recalibration via the panel's Start Center or Service menu. Clean the display surface and check for physical damage to the touchscreen.

Frequently Asked Questions

Which PLCs are compatible with the Siemens OP 177B (6AV6355-1CA47-7AA1)?

The OP 177B is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI/PROFIBUS DP. It also supports Ethernet-based communication and can connect to third-party controllers using configurable communication drivers in WinCC flexible.

What engineering software is required to configure this panel?

The OP 177B is configured using Siemens WinCC flexible software. The project must be created and transferred to the panel using a compatible version of WinCC flexible that supports the OP 177B hardware.

What is the supply voltage for the 6AV6355-1CA47-7AA1?

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

Does the OP 177B support both touch and key-based operation?

Yes, the OP 177B features a resistive touchscreen combined with a membrane keypad including configurable function keys, allowing both touch and key-based operator interaction.

What is the front panel protection rating of this unit?

The front panel of the OP 177B carries an IP65 protection rating, making it suitable for panel-mount installations where dust and water ingress protection is required.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check for blown fuses or wiring issues in the control cabinet.

Restore correct 24 V DC supply voltage. If voltage is present and the display remains blank, the internal power supply or backlight may be faulty and the unit should be sent for repair or replacement.

Panel fails to communicate with the PLC

Check the MPI/PROFIBUS DP or Ethernet cable for continuity and correct connection. Verify the PLC station address and baud rate settings match those configured in WinCC flexible.

Correct any wiring faults and ensure communication parameters (address, baud rate, protocol) are consistent between the panel configuration and the PLC. Restart both the panel and PLC after making changes.

Touchscreen does not respond or responds inaccurately

Inspect the display surface for contamination or physical damage. Attempt to access the panel via the keypad to enter the Service menu.

Perform a touchscreen recalibration from the panel's Start Center or Service menu. If calibration does not resolve the issue, the touchscreen overlay may need replacement.

Project transfer from WinCC flexible fails

Verify the communication connection between the engineering PC and the panel (USB, Ethernet, or MPI). Check that the WinCC flexible project version is compatible with the panel firmware version.

Ensure the correct transfer cable and communication settings are used. Update the panel firmware if a version mismatch is detected, then re-attempt the project transfer.

Panel repeatedly restarts or enters an error loop on startup

The loaded project may be corrupted or incompatible with the current firmware. Check for any Event ID errors displayed briefly during startup.

Boot the panel into the Start Center by holding the appropriate key combination during power-on, then re-transfer a valid project. If the issue persists, perform a factory reset and reload the firmware before transferring the project again.

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