Siemens 6AV6355-1CA47-7EM2 OP 177B

€ 2.018,27

SKU: 6AV6355-1CA47-7EM2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7EM2 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, enabling operators to monitor and control industrial processes directly at the machine. As part of the SIMATIC HMI comfort and mobile panel lineage, it is engineered for integration with Siemens SIMATIC S7 and other compatible PLC families.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports up to 256 colors. It is equipped with MPI/PROFIBUS DP and Ethernet (PROFINET) communication interfaces, allowing flexible integration into existing automation networks. The panel includes 14 function keys, a numeric keypad, and supports configuration via Siemens WinCC flexible software. Onboard memory supports project storage and recipe management, and the unit operates on a 24 V DC supply.

The OP 177B is widely deployed in manufacturing, packaging, food and beverage, and process industries where robust operator interface panels are required at the machine level. Its combination of physical function keys and display-based navigation makes it suitable for environments where gloved operation or high-reliability key input is preferred over pure touchscreen interaction. The panel's compact form factor and standard panel-cutout mounting allow straightforward integration into control cabinets and machine enclosures.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (PROFINET)
Configuration Software	WinCC flexible 2008 or higher
Function Keys	14 programmable function keys
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: 1000: Communication error between the HMI panel and the connected PLC. The configured connection cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections. Verify PLC address settings and communication parameters in WinCC flexible project match the hardware configuration.
Event ID: 1003: Connection to the PLC was interrupted during operation.
Inspect physical communication cables for damage. Verify PLC is powered and running. Check for address conflicts on the network and re-establish the connection.
Event ID: 10000: Project download error. The project could not be transferred to the HMI panel.
Verify the transfer cable or network connection between the engineering PC and the panel. Ensure WinCC flexible version is compatible with the panel firmware version. Retry the transfer.
Event ID: 10001: Insufficient memory on the HMI device to store the downloaded project.
Delete existing projects or recipe data from the panel memory. Reduce project size if necessary and retry the download.
Event ID: 20000: System fault detected. Internal panel error or firmware issue.
Perform a panel restart. If the fault persists, check firmware version and update if available. Contact Siemens technical support if the issue continues.
Event ID: 40000: Recipe data error. Recipe records could not be read or written correctly.
Check recipe configuration in WinCC flexible. Verify available memory on the panel. Re-download the project and test recipe functionality.
Event ID: 70010: Illegal system activity detected. An operation was attempted that is not permitted in the current operating mode.
Review the operator actions and configured screen objects. Check user authorization levels configured in the WinCC flexible project.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7EM2) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (PROFINET) interfaces, allowing connection to SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers via these protocols.

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

The OP 177B is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are transferred to the panel via Ethernet, MPI, or USB connection from the engineering PC.

What is the supply voltage for the 6AV6355-1CA47-7EM2?

The panel operates on a 24 V DC supply voltage, which is the standard for SIMATIC HMI operator panels.

What is the IP protection rating of the OP 177B?

The front face of the OP 177B is rated IP65, making it suitable for environments where dust and water spray may be present. The rear of the unit is rated IP20.

Can the OP 177B be used with non-Siemens PLCs?

Yes, the OP 177B can communicate with third-party PLCs using supported protocols such as PROFIBUS DP or Ethernet-based drivers available in WinCC flexible, though compatibility should be verified for each specific controller.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check that the supply is within tolerance and that the connector is fully seated.

Restore correct 24 V DC supply. If voltage is correct but display remains blank, check internal fuse and inspect the display ribbon cable connection. A failed backlight or internal power board may require panel repair or replacement.

HMI panel cannot establish communication with the PLC

Verify the communication cable type and wiring for MPI, PROFIBUS DP, or Ethernet. Check that the PLC address and baud rate configured in the WinCC flexible project match the actual PLC settings.

Correct any address or baud rate mismatches in the project configuration. Replace damaged cables. Ensure the PLC is in RUN mode and the network termination resistors are correctly set for PROFIBUS connections.

Project download fails or transfer is interrupted

Check the physical connection between the engineering PC and the panel (USB, Ethernet, or MPI cable). Verify that the panel is in Transfer mode and that the WinCC flexible version is compatible with the panel firmware.

Switch the panel to Transfer mode manually via the Start Center. Update WinCC flexible or panel firmware if version mismatch is detected. Use a different cable or interface if the current connection is unreliable.

Touchscreen or function keys not responding correctly

Check for physical damage to the keypad membrane or touchscreen surface. Perform a touchscreen calibration from the panel's Start Center or system settings menu.

Recalibrate the touchscreen using the built-in calibration routine. If keys are physically damaged, the keypad membrane or front panel assembly may need replacement.

Panel repeatedly restarts or shows system fault on startup

Attempt to start the panel in Service mode to access the Start Center. Check if a corrupted project file is causing the restart loop by deleting the current project from panel memory.

Delete the existing project via the Start Center file manager and re-download a verified project from WinCC flexible. If restarts continue without a project loaded, the panel firmware may be corrupted and should be re-flashed using the Siemens ProSave tool.

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