Siemens 6AV6355-1CA47-7EM6 OP 177B

€ 659,77

SKU: 6AV6355-1CA47-7EM6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7EM6 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level visualization and operator control tasks. This unit is part of the OP 177B product family, which offers a compact and robust panel solution for industrial environments. It provides a monochrome or color display interface for process visualization, alarm management, and recipe handling in automation systems.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both touch and key-based operation through its integrated function keys and numeric keypad. It is equipped with MPI/PROFIBUS DP and RS-422/RS-485 communication interfaces, enabling direct connection to SIMATIC S7 PLCs and other compatible controllers. The panel supports configuration via SIMATIC WinCC flexible software and offers onboard flash memory for project storage, along with a USB interface for data transfer and backup.

The OP 177B is widely used in manufacturing, packaging, and process industries where a reliable and compact operator interface is required at the machine level. Its robust housing and wide operating temperature range make it suitable for installation in control cabinets and on machine panels in demanding industrial environments. The panel's compatibility with the SIMATIC S7-200, S7-300, and S7-400 controller families makes it a versatile choice for a broad range of automation applications.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Touch Technology	Resistive touchscreen with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB
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 panel)
Mounting	Panel mounting
Series/Product Family	SIMATIC HMI OP 177B
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; the project loaded on the panel is incompatible or corrupt.
Reload the project using SIMATIC WinCC flexible. Verify the project was compiled without errors before transferring.
Event ID: 20000: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify the PLC address settings match the panel configuration.
Event ID: 40000: 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 address. Check PLC program for address changes.
Event ID: 50000: Flash memory write error; the panel cannot save data to internal memory.
Check available flash memory capacity. Perform a memory reset via the panel's Service menu and reload the project.
Event ID: 60000: Operating system error or firmware mismatch detected.
Update the panel firmware using ProSave or WinCC flexible to the version compatible with the loaded project.
Event ID: 70000: Backup/restore error during data transfer via USB or serial interface.
Verify the USB device is formatted correctly (FAT32) and has sufficient free space. Retry the backup or restore operation.
Event ID: 80000: Recipe data error; recipe records cannot be read or written correctly.
Check recipe configuration in WinCC flexible. Ensure the recipe data record structure matches the PLC tag assignments.

Frequently Asked Questions

Which configuration software is required for the OP 177B?

The OP 177B is configured using SIMATIC WinCC flexible software. The project must be compiled and transferred to the panel via MPI, PROFIBUS DP, or USB connection.

Which Siemens PLCs are compatible with the OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as other controllers supporting MPI or PROFIBUS DP protocols. Third-party controllers with RS-422/RS-485 interfaces may also be supported via appropriate drivers.

What is the supply voltage for the 6AV6355-1CA47-7EM6?

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

Does the OP 177B support data backup via USB?

Yes, the OP 177B is equipped with a USB interface that allows project transfer, firmware updates, and data backup operations using a standard USB storage device formatted as FAT32.

What is the front panel protection rating of the OP 177B?

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for installation in industrial control panels.

Troubleshooting

Display remains blank after power is applied

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.

Correct the supply voltage if out of range. If voltage is correct and display remains blank, the internal power supply or backlight may be faulty and the unit should be sent for repair or the backlight replaced.

Panel fails to communicate with the PLC

Check the MPI or PROFIBUS DP cable for continuity and correct termination at both ends of the bus. Verify the panel's configured PLC address and baud rate match the PLC settings.

Replace or reseat the communication cable. Correct address and baud rate settings in the WinCC flexible project and retransfer. Ensure bus termination resistors are enabled only at the physical ends of the network.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touchscreen surface. Attempt a touchscreen recalibration from the panel's Start Center or Service menu.

Clean the touchscreen surface with a soft, dry cloth. Perform a recalibration procedure. If the issue persists, the touchscreen overlay may require replacement.

Project transfer fails or is interrupted

Verify the USB cable or MPI/PROFIBUS connection is secure. Check that the WinCC flexible project version is compatible with the panel's firmware version.

Update the panel firmware using ProSave to match the WinCC flexible version. Retry the transfer using a known-good cable. Ensure no other devices are conflicting on the MPI bus during transfer.

Panel repeatedly restarts or shows a watchdog reset message

This may indicate a corrupted project file, insufficient memory, or a hardware fault. Check the event log in the panel's Start Center for specific event IDs.

Reload a freshly compiled project from WinCC flexible. Perform a factory reset via the Service menu if the issue persists. If restarts continue after reloading, the unit may have a hardware fault requiring repair.

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