Siemens 6AV6355-1CA47-7CC2 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7CC2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CC2 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' SIMATIC HMI product line and provides a compact, panel-mounted display solution for process visualization and operator control. The OP 177B series is engineered for integration into control cabinets and machine panels in industrial environments.

The 6AV6355-1CA47-7CC2 features a 5.7-inch STN display with a resolution of 320 x 240 pixels (QVGA) and supports 256 colors, providing clear visualization of process data and graphics. The panel is equipped with both MPI/PROFIBUS DP and RS-422/RS-485 communication interfaces, enabling connectivity to a wide range of Siemens SIMATIC S7 PLCs as well as third-party controllers. It includes function keys for operator input, a membrane keypad, and is configured and programmed using WinCC flexible software. The unit operates on a 24 V DC supply and carries IP65 protection on the front face for resistance to dust and water ingress.

The OP 177B is widely deployed in manufacturing, packaging, material handling, and process industries where a reliable, mid-range operator panel is required at the machine level. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for both new installations and retrofit projects. The compact form factor and robust construction make it suitable for demanding industrial environments with limited panel space.

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. 12 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 Rating (Front)	IP65
IP Rating (Rear)	IP20
Mounting	Panel mounting
Configuration Software	WinCC flexible 2005 or higher
Certifications	CE, UL, cULus

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/PROFIBUS DP cable connections and termination resistors. Verify the PLC address settings and baud rate configuration in WinCC flexible match the controller settings.
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: Tag read error. The HMI panel cannot read the value of a configured tag from the PLC.
Verify the tag address configured in WinCC flexible matches the actual PLC memory address. Confirm the PLC program has the correct data block or memory area defined.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured PLC tag address.
Check that the target PLC memory area is not write-protected. Verify the tag address and data type configuration in WinCC flexible.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the HMI panel failed.
Ensure the panel is in Transfer mode. Check the PC-to-panel communication cable and interface settings. Verify sufficient memory is available on the panel.
Event ID: 50000: Internal device error or system fault detected on the HMI panel.
Perform a power cycle of the panel. If the fault persists, reload the WinCC flexible project. If unresolved, the panel may require repair or replacement.
Event ID: 60000: Backup/restore error. A project backup or restore operation has failed.
Check the memory card for errors or replace it. Ensure the project file is not corrupted and is compatible with the panel firmware version.

Frequently Asked Questions

Which PLCs are compatible with the Siemens 6AV6355-1CA47-7CC2 OP 177B?

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

What software is required to program and configure this HMI panel?

The 6AV6355-1CA47-7CC2 is configured using Siemens WinCC flexible 2005 or a later version. Projects are downloaded to the panel via the MPI interface or a serial PC adapter cable.

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

The front face of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Does the OP 177B support recipe and alarm management functions?

Yes, the OP 177B supports recipe management, alarm logging, and trend displays as part of its WinCC flexible project configuration, subject to the available panel memory.

What is the operating supply voltage for this panel?

The OP 177B operates on a 24 V DC supply voltage, which is the standard control voltage used in most industrial control cabinet installations.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check that polarity is correct and voltage is within the specified range. Inspect the internal fuse if accessible.

Correct any wiring errors or supply voltage issues. If the supply is confirmed good and the display remains blank, the panel backlight or internal power supply may have failed and the unit should be sent for repair.

HMI panel shows 'No connection to PLC' or communication error on screen

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

Re-seat all connectors, replace damaged cables, and ensure correct bus termination. Correct any address or baud rate mismatches in the WinCC flexible project and re-download to the panel.

Touchscreen or function keys do not respond to input

Determine whether the display is active but inputs are unresponsive, or whether the panel is frozen. Check if the panel responds to a power cycle. For function keys, inspect the membrane keypad for physical damage or contamination.

Perform a power cycle to recover from a frozen state. If function keys are physically damaged or unresponsive after power cycle, the membrane keypad assembly may need replacement. Reload the WinCC flexible project to rule out software configuration issues.

Project download from PC to panel fails

Confirm the panel is set to Transfer mode (accessible via the panel's Start Center menu). Check the PC adapter cable connection and verify the correct COM port and transfer settings are selected in WinCC flexible.

Switch the panel to Transfer mode before initiating the download. Replace the PC-to-MPI adapter cable if communication cannot be established. Ensure the WinCC flexible project is compatible with the panel firmware version.

Screen display shows distorted graphics or incorrect colors

Check the display for physical damage such as pressure marks or cracks. Verify the WinCC flexible project graphics are configured for the correct panel resolution of 320 x 240 pixels and 256 colors.

If the display is physically damaged, the panel requires hardware repair or screen replacement. If the issue is software-related, correct the project configuration in WinCC flexible and re-download the project to the panel.

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