Siemens 6AV6355-1CA47-7DC5 OP 177B

€ 1.309,77

SKU: 6AV6355-1CA47-7DC5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7DC5 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' established SIMATIC HMI product line and provides a compact, robust interface for process visualization and operator control. The OP 177B series bridges the gap between basic text-based panels and full graphical HMI systems, offering a monochrome or color display depending on the variant.

The OP 177B 6AV6355-1CA47-7DC5 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 a membrane keypad for operator input and supports communication via MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, enabling integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel operates on 24 V DC supply voltage and includes an integrated configuration memory for storing project data created with WinCC flexible or STEP 7 Micro/WIN engineering software.

The OP 177B is widely deployed in manufacturing automation, packaging machinery, material handling systems, and process control applications where a reliable and cost-effective HMI solution is required. Its compact form factor and panel-mount design make it suitable for integration into control cabinets and machine front panels. The support for PROFIBUS DP makes it particularly well-suited for distributed automation architectures common in automotive, food and beverage, and general industrial manufacturing environments.

Technical Specifications

Display Size	5.7 inch
Display Type	STN color LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Input/Operating Voltage	24 V DC
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 Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Mounting	Panel mount
Engineering Software	WinCC flexible, STEP 7 Micro/WIN
Series/Product Family	SIMATIC HMI OP 177B
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000: Configuration error detected. The project data loaded on the panel is incompatible or corrupted.
Reload the project using WinCC flexible. Verify the project was compiled without errors before transferring.
Event ID: 10000: Communication connection to the PLC has been lost or cannot be established.
Check PROFIBUS DP or MPI cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI configuration.
Event ID: 10001: Timeout on communication link. The HMI did not receive a response from the PLC within the expected time.
Check network cabling and connector integrity. Reduce bus load or increase the communication timeout value in the project settings.
Event ID: 40000: Internal device error. A hardware fault has been detected within the panel.
Cycle power to the panel. If the error persists, the unit may require service or replacement of the internal power supply or main board.
Event ID: 20000: Tag value out of configured limit. A process variable has exceeded its defined high or low limit.
Check the process value and associated sensor or actuator. Verify limit values are correctly configured in the HMI project.
Event ID: 50000: Memory overflow. The panel's internal memory is insufficient to store all configured data or alarms.
Reduce the number of active alarms or data log entries. Archive historical data and clear the alarm buffer via the panel's control panel menu.
Event ID: 70010: Transfer mode active. The panel is waiting for a project download from the engineering station.
Transfer the project from WinCC flexible or cancel the transfer mode by pressing the appropriate key combination to return to runtime mode.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B 6AV6355-1CA47-7DC5?

The OP 177B is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It also supports communication with S7-200 via RS-422/RS-485 using the PPI protocol.

What engineering software is required to program this HMI panel?

The OP 177B is configured using Siemens WinCC flexible (for S7-300/400 projects) or STEP 7 Micro/WIN with the WinCC flexible Micro option (for S7-200 projects). The project is then transferred to the panel via MPI, PROFIBUS, or USB/serial connection.

What is the supply voltage for this panel?

The 6AV6355-1CA47-7DC5 operates on a 24 V DC supply voltage. Ensure the power supply can provide sufficient current as specified in the product documentation.

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

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

Can the OP 177B be used as a replacement for older SIMATIC OP panels?

The OP 177B is designed as a successor to earlier SIMATIC OP panels such as the OP 17. Existing projects may require migration using WinCC flexible, and the panel cutout dimensions should be verified before installation.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel's power connector. Check for blown internal fuses or a faulty power supply unit.

Ensure the supply voltage is within the 24 V DC tolerance range. Replace any blown fuses. If the power supply is confirmed good and the display remains blank, the internal backlight or main board may require replacement.

Panel cannot establish communication with the PLC

Verify the MPI or PROFIBUS DP cable is correctly connected and terminated at both ends. Check that the bus address and baud rate configured on the HMI match those set on the PLC.

Replace or reseat the communication cable. Correct any address or baud rate mismatches in the WinCC flexible project and retransfer. Ensure termination resistors are only active at the two physical ends of the bus segment.

Touchscreen or keypad inputs are not responding correctly

Check for physical damage to the membrane keypad. Verify the panel is not in transfer mode, which disables normal runtime operation.

Clean the keypad surface and check for mechanical damage. If the panel is in transfer mode, cancel it via the appropriate key combination. If keys remain unresponsive, the keypad membrane assembly may need replacement.

Project transfer from WinCC flexible fails or is interrupted

Check the communication cable between the PC and the panel (MPI adapter or serial cable). Verify the panel is in transfer mode and the correct interface is selected in WinCC flexible.

Restart the transfer process after ensuring the panel is in transfer mode. Use a known-good MPI/PROFIBUS adapter. Check PC COM port settings and update the PC adapter driver if necessary.

Alarm messages are not displayed or are missing on the panel

Check the alarm configuration in the WinCC flexible project. Verify that the PLC tags linked to alarm triggers are communicating correctly and that alarm classes are enabled.

Retransfer the project after verifying alarm tag connections and class settings. Ensure the alarm buffer has not reached its maximum capacity, and clear old entries if necessary via the panel's service menu.

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