Siemens 6AV6355-1CA47-7DM5 OP 177B

€ 2.495,00

SKU: 6AV6355-1CA47-7DM5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7DM5 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' established SIMATIC HMI product line and provides a compact, panel-mounted interface for process visualization and control. The OP 177B series bridges the gap between basic text-based panels and full-featured graphic displays, offering a monochrome or color STN display depending on the variant.

The 6AV6355-1CA47-7DM5 features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA), supporting up to 256 colors. The panel includes both a touch screen and function keys for operator input, providing flexible interaction options. Communication is supported via MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, enabling direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers. The unit operates on 24 V DC supply and is configured using WinCC flexible 2005 or later engineering software.

The OP 177B is widely deployed in manufacturing, packaging, and process industries where a reliable and compact HMI solution is required at the machine level. Its combination of touch and key-based operation makes it suitable for environments where operators may wear gloves or require tactile feedback. The panel's PROFIBUS DP connectivity and broad PLC compatibility make it a practical choice for integration into existing SIMATIC automation architectures.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color
Display Colors	256 colors
Touch Technology	Resistive touchscreen with membrane keypad
Input Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, RS-422/RS-485
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 & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The connection to the controller has been interrupted or cannot be established.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI configuration in WinCC flexible.
Event ID: 10001: Connection to the PLC was established but subsequently lost during operation.
Inspect cable integrity and connector seating. Check for electromagnetic interference sources near the communication cable. Verify PLC is in RUN mode.
Event ID: 20000: Project download error. The project could not be transferred to the HMI panel successfully.
Ensure the correct transfer cable or network connection is used. Verify the WinCC flexible project is compiled without errors before transfer. 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 or objects in the project. Archive or delete unnecessary data records and alarm logs stored on the device.
Event ID: 50000: Internal device error or hardware fault detected during self-test at startup.
Perform a power cycle. If the error persists, back up the project and perform a factory reset via the Control Panel in Transfer mode. Contact Siemens support if the fault recurs.
Event ID: 70000: Tag update error. One or more process tags could not be read from or written to the connected controller.
Verify the tag addresses configured in WinCC flexible match the actual PLC data block or memory addresses. Check PLC program for address conflicts.
Event ID: 60000: Alarm buffer overflow. The number of pending alarms exceeds the buffer capacity of the HMI panel.
Acknowledge and clear active alarms. Review the alarm configuration in WinCC flexible to reduce simultaneous alarm generation or increase the alarm buffer size if possible.

Frequently Asked Questions

Which PLC families are compatible with the OP 177B (6AV6355-1CA47-7DM5)?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports communication with third-party controllers via RS-422/RS-485 using appropriate drivers in WinCC flexible.

What engineering software is required to configure this HMI panel?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via MPI, PROFIBUS DP, or a USB-to-serial adapter depending on the available interface.

What is the supply voltage for the 6AV6355-1CA47-7DM5?

The panel operates on a 24 V DC supply. Ensure the power source is within the specified tolerance range to avoid damage or unstable operation.

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

Yes, the OP 177B features a resistive touchscreen combined with a membrane keypad including 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 installation in environments where dust and water spray may be present.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the voltage is within the specified tolerance. Inspect the internal fuse if accessible.

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

HMI panel shows 'No connection to PLC' message during runtime

Check the MPI or PROFIBUS DP cable between the HMI and PLC. Verify bus termination is correctly applied at both ends of the network. Confirm the PLC station address and baud rate match the settings in the WinCC flexible project.

Replace or reseat the communication cable. Correct any address or baud rate mismatches in the HMI project and re-download. Ensure only one active bus termination exists at each end of the segment.

Touchscreen does not respond accurately to touch input

The resistive touchscreen may require recalibration, particularly after prolonged use or if the panel has been replaced. Access the Control Panel via the Start menu in Transfer mode to find the touch calibration utility.

Run the touchscreen calibration routine from the SIMATIC HMI Control Panel. If calibration does not resolve the issue, the touchscreen overlay may be damaged and require physical replacement.

Project transfer fails or times out during download from WinCC flexible

Verify the communication interface selected in WinCC flexible matches the physical connection used (MPI, PROFIBUS, or serial). Check that the HMI panel is in Transfer mode before initiating the download.

Set the panel to Transfer mode via the Control Panel or by pressing the appropriate key combination at startup. Confirm the correct COM port or network address is selected in the WinCC flexible transfer settings and retry the download.

Alarm messages are displayed in incorrect language or with garbled text

The language settings in the WinCC flexible project may not match the language configured on the HMI runtime, or the font resources for the selected language may not have been included in the project download.

Open the project in WinCC flexible, verify the language configuration under Project Languages, and ensure all required fonts and language resources are included. Re-download the complete project to the panel.

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