Siemens 6AV6355-1CA47-7ET1 OP 177B

€ 1.995,00

SKU: 6AV6355-1CA47-7ET1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7ET1 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 interface for process visualization and operator control in industrial environments. As part of the SIMATIC HMI comfort and mobile panel lineage, it is engineered for robust, continuous operation in demanding production settings.

The OP 177B (6AV6355-1CA47-7ET1) features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA), supporting up to 256 colors. It is equipped with function keys and a membrane keypad for operator input, and supports MPI, PROFIBUS DP, and Ethernet communication interfaces for integration with SIMATIC S7 PLCs and other controllers. The panel includes 6 MB of user memory for project data and recipes, and runs on WinCC flexible runtime software, enabling configuration via Siemens STEP 7 and WinCC flexible engineering tools.

The OP 177B is widely deployed in machine building, automotive manufacturing, food and beverage processing, and packaging industries where a compact, panel-mounted HMI with reliable keypad input is required. Its compatibility with the SIMATIC S7-300 and S7-400 PLC families makes it a standard choice for retrofitting and new installations alike. The unit is suited for applications requiring recipe management, alarm logging, and trend display without the need for a full touchscreen interface.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color LCD
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
User Memory	6 MB
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
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been interrupted.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both the HMI and PLC if necessary.
Event ID: 10001: Connection to PLC lost during runtime. The HMI was previously connected but communication has dropped.
Inspect physical cabling and connectors. Check PLC operating state and ensure it is in RUN mode. Verify network settings and baud rate configuration.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the HMI panel failed.
Ensure the correct transfer cable or network connection is used. Verify that the HMI is in Transfer mode before initiating download. Check available user memory on the device.
Event ID: 40000: System memory low. Available memory for runtime operation is insufficient.
Reduce the project size by removing unused screens, tags, or archived data. Clear the alarm and data logs on the device.
Event ID: 50000: Illegal system state detected. The HMI runtime has encountered an internal error.
Perform a warm restart of the HMI panel. If the error persists, reload the project via WinCC flexible and perform a factory reset if required.
Event ID: 110000: Recipe data error. A recipe record could not be read or written correctly.
Check recipe configuration in WinCC flexible for correct tag assignments. Verify that the target PLC data blocks exist and are correctly addressed.
Event ID: 120000: Alarm logging error. The HMI cannot write alarm entries to the configured log.
Check available storage memory. Verify alarm log configuration in WinCC flexible and ensure the log file has not exceeded its maximum size.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6355-1CA47-7ET1)?

The OP 177B is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication with S7-300/400 and other controllers supported by WinCC flexible.

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

The OP 177B is configured using Siemens WinCC flexible engineering software. Projects are created on a PC and downloaded to the panel via MPI, PROFIBUS, or Ethernet connection.

What is the display type and resolution of this HMI panel?

The 6AV6355-1CA47-7ET1 features a 5.7-inch STN color LCD with a resolution of 320 x 240 pixels (QVGA) and supports up to 256 colors.

Does the OP 177B support touchscreen input?

No, the OP 177B uses a membrane keypad with function keys for operator input and does not feature a touchscreen. For touchscreen operation, the TP 177B variant should be considered.

What is the supply voltage for the OP 177B?

The OP 177B operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI panel-mounted devices.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals. Inspect the internal fuse and power connector for damage or loose connections.

Restore correct 24 V DC supply. Replace the internal fuse if blown. If the power supply is confirmed good but the display remains blank, the backlight or internal power board may require replacement.

HMI panel does not communicate with the PLC

Verify the MPI or PROFIBUS DP address configured in the HMI project matches the physical network settings. Check cable integrity and bus termination at both ends of the network.

Correct any address mismatches in the WinCC flexible project and reload it to the panel. Replace damaged cables and ensure proper bus termination resistors are installed at network endpoints.

Project transfer from PC to HMI fails

Confirm the HMI is set to Transfer mode before initiating the download. Check that the correct communication interface (MPI, PROFIBUS, or Ethernet) and transfer settings are selected in WinCC flexible.

Switch the HMI to Transfer mode via the Start Center menu. Verify PC-side communication settings match the panel configuration. If using Ethernet, ensure both devices are on the same subnet.

Touchscreen or keypad inputs are not responding

Check for physical damage to the membrane keypad. In the panel's Start Center, test key functionality using the built-in diagnostics if available.

Clean the keypad surface and check for debris under the membrane. If individual keys are unresponsive, the membrane keypad assembly may need replacement.

HMI displays 'Runtime not started' or freezes at startup

The WinCC flexible runtime project may be corrupted or missing. Check available user memory and verify the project was successfully transferred.

Re-transfer the WinCC flexible project to the panel. If the issue persists, perform a factory reset via the Start Center and reload the project from scratch.

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