Siemens 6AV6355-1CA47-7DA4 OP 177B

€ 419,36

SKU: 6AV6355-1CA47-7DA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7DA4 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 yet capable panel for process visualization and control. It is part of Siemens' established SIMATIC HMI product line, which is widely deployed in industrial automation environments worldwide.

The OP 177B features a 5.7-inch STN display and supports both MPI and PROFIBUS DP communication interfaces, enabling direct integration with SIMATIC S7 PLCs. It includes configurable function keys, an integrated keyboard, and supports WinCC flexible as its configuration software. The panel offers onboard flash memory for project storage and supports recipe management, alarm logging, and trend display functions, making it suitable for a broad range of visualization tasks.

The OP 177B is commonly used in machine building, packaging, food and beverage, and general manufacturing industries where a compact, robust operator interface is required at the machine level. Its support for PROFIBUS DP and MPI makes it particularly well-suited for integration into existing Siemens S7-300 and S7-400 PLC architectures. The panel's rugged construction and wide operating temperature range allow deployment in demanding industrial environments.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 px (QVGA)
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, RS 422/485
Memory	4 MB flash (user memory)
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
Configuration Software	WinCC flexible 2008

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 lost or cannot be established.
Check PROFIBUS DP or MPI cable connections and termination resistors. Verify the PLC address settings match the HMI project configuration. Restart both the HMI and PLC if necessary.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Inspect the communication cable for damage. Verify bus termination and cable shielding. Check PLC program status and ensure the controller is in RUN mode.
Event ID: 20000: Project download error. The project could not be transferred to the HMI panel successfully.
Verify the transfer cable connection and PC communication settings. Ensure WinCC flexible project is compiled without errors before transfer. Check available memory on the panel.
Event ID: 40000: System memory low. Available memory for runtime operation is insufficient.
Reduce the number of active alarms, trends, or recipe entries in the project. Delete unused data records from the panel memory and restart the device.
Event ID: 50000: Internal device error or hardware fault detected during self-test at startup.
Perform a factory reset via the panel's Start Center. If the error persists after reset, the panel may require repair or replacement of internal components.
Event ID: 70000: Configuration error detected. The loaded project is incompatible with the current firmware version of the panel.
Update the panel firmware to the version compatible with the WinCC flexible project. Re-download the project after firmware update.
Event ID: 60000: Tag read/write error. A configured variable (tag) could not be read from or written to the PLC.
Verify the PLC data block addresses referenced in the HMI project are correct and accessible. Check PLC program for address conflicts or protected memory areas.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7DA4) support?

The OP 177B supports MPI and PROFIBUS DP interfaces, as well as RS 422/485 serial communication. This allows direct connection to SIMATIC S7-300 and S7-400 PLCs without additional communication modules.

Which configuration software is required for this panel?

The OP 177B is configured using Siemens WinCC flexible 2008 or compatible versions. Projects created in WinCC flexible are downloaded to the panel via a PC adapter or USB-to-MPI cable.

What is the supply voltage for the 6AV6355-1CA47-7DA4?

The panel operates on 24 V DC supply voltage. Ensure a stable, regulated 24 V DC power source is used to avoid operational issues.

Is the OP 177B compatible with SIMATIC S7-1200 or S7-1500 PLCs?

The OP 177B is primarily designed for use with S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. Connectivity to S7-1200 or S7-1500 may be limited and is generally not the intended application for this panel generation.

What is the front panel protection rating of this HMI?

The front panel of the OP 177B carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present.

Troubleshooting

Display remains blank after power on

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

Restore correct 24 V DC supply if voltage is absent or out of range. If supply is correct and display remains blank, the internal backlight or power supply board may be faulty and require replacement.

HMI panel cannot communicate with the PLC

Verify the PROFIBUS DP or MPI address configured in the HMI project matches the physical address set on the PLC. Inspect the communication cable for continuity and correct pin assignment. Check bus termination at both ends of the cable.

Correct any address mismatches in the WinCC flexible project and re-download. Replace damaged communication cables and ensure proper bus termination resistors are installed at both cable ends.

Touchscreen does not respond or responds inaccurately

Access the Start Center on the panel and navigate to the touchscreen calibration utility. Check for physical damage or contamination on the touch surface.

Perform a touchscreen recalibration from the Start Center menu. Clean the touch surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen overlay may need replacement.

Project download fails or transfer is interrupted

Check the PC adapter or transfer cable connection between the engineering PC and the HMI panel. Verify the transfer settings in WinCC flexible match the panel's communication port and address.

Re-seat the transfer cable and ensure the panel is set to Transfer mode via the Start Center. Recompile the WinCC flexible project and attempt the download again. Try a different PC adapter if the issue persists.

Panel repeatedly restarts or enters an error loop at startup

Observe the startup sequence and note any error event IDs displayed. A corrupted project file or incompatible firmware version can cause repeated restarts.

Boot into the Start Center by pressing the appropriate key combination during startup, then perform a factory reset or delete the existing project. Re-download a freshly compiled and compatible project from WinCC flexible.

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