Siemens 6AV6355-1CA47-7CE3 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7CE3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CE3 is an OP 177B operator panel belonging to the SIMATIC HMI family, designed for machine-level visualization and operator control tasks. This unit features a monochrome or color display and is part of the comfort-oriented mid-range HMI lineup from Siemens, intended for use with SIMATIC S7 and other compatible controllers. The part number 6AV6355-1CA47-7CE3 identifies a specific hardware and software configuration within the OP 177B product line.

The OP 177B supports communication via MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, enabling direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers. The panel includes function keys and a numeric/alphanumeric keypad for operator input, and supports configuration via WinCC flexible software. It provides onboard flash memory for project storage and supports recipe management, alarm logging, and trend display functions.

The OP 177B is widely deployed in manufacturing automation, packaging machinery, material handling systems, and process control applications. Its robust keypad-based design makes it suitable for environments where touchscreen operation is impractical due to gloves or contamination. The panel is commonly found in machine tool control cabinets, conveyor systems, and industrial process lines where reliable operator interaction with the control system is required.

Technical Specifications

Display Type	STN color LCD
Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 8 W
Communication Interface	MPI, PROFIBUS DP, RS-422/RS-485
Memory	512 KB flash (user memory)
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
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2005 or higher
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI or PROFIBUS DP cable connections and terminating resistors. Verify the PLC address settings match the HMI project configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during operation.
Inspect communication cables for damage or loose connectors. Check bus termination and cable shielding. Restart the HMI panel and PLC if the connection does not recover automatically.
Event ID: 40000: Project download error. Transfer of the HMI project from the engineering PC to the panel failed.
Verify the transfer cable and PC interface settings. Ensure the panel is in transfer mode before initiating download. Check that the WinCC flexible project version is compatible with the panel firmware.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program to ensure the address is valid and accessible.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Check that the PLC address is not write-protected. Verify the data type of the tag in the HMI project matches the PLC variable. Confirm the PLC is in a state that allows external writes.
Event ID: 50000: System memory low. Available memory for runtime operation is critically low.
Reduce the number of active alarms, trends, or recipe entries in the project. Archive or clear alarm logs stored on the device. Consider optimizing the HMI project to reduce memory usage.
Event ID: 60000: Firmware update error. An error occurred during a firmware update procedure.
Restart the panel and attempt the firmware update again using the correct firmware version for this panel variant. Ensure stable power supply during the update process. If the panel fails to boot, use the bootstrap loader via the serial interface.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6355-1CA47-7CE3)?

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

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

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via a PC adapter cable connected to the MPI or serial interface.

What is the supply voltage for the OP 177B?

The OP 177B requires a 24 V DC power supply. Ensure the power source is within the specified tolerance range to avoid damage or operational faults.

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

The front panel of the OP 177B is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial control cabinet doors.

Can the OP 177B display trends and alarms?

Yes, the OP 177B supports trend display, alarm logging, and recipe management functions. These features are configured within the WinCC flexible project and stored in the panel's onboard flash memory.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for a blown internal fuse. Observe whether the backlight is off but the display shows faint content when viewed at an angle.

Restore the 24 V DC supply if voltage is absent or out of range. If the backlight has failed, the display backlight unit may require replacement. If the panel shows no signs of life, inspect the internal fuse and replace if blown.

HMI panel continuously displays 'Connecting…' or communication error on startup

Check the MPI or PROFIBUS DP cable connections between the panel and the PLC. Verify bus termination resistors are correctly placed at both ends of the bus. Confirm the PLC node address and baud rate in the HMI project match the physical network settings.

Correct any wiring faults or loose connectors. Ensure bus termination is active only at the two physical ends of the network. Update the HMI project configuration in WinCC flexible if address or baud rate mismatches are found, then re-download the project.

Panel does not enter transfer mode for project download

Confirm the correct key combination is being used to access the transfer mode or loader menu on startup. Check whether the panel is locked by a password-protected project that prevents access to the system menu.

Restart the panel and press the appropriate key combination during boot to access the start center or transfer mode. If password protection prevents access, perform a factory reset using the bootstrap loader procedure via the serial interface, noting that this will erase the existing project.

Touchscreen or function keys not responding correctly

Check whether the function keys register any input by observing on-screen feedback. For keypad issues, inspect for physical damage or contamination under the keys. Verify the project configuration to ensure key assignments are correct.

Clean the keypad area to remove any contamination. If keys are physically damaged, the front panel membrane keypad assembly may need replacement. Re-download the HMI project if key assignments appear to be misconfigured.

Panel reboots unexpectedly during operation

Monitor the 24 V DC supply voltage for dips or instability using a multimeter or oscilloscope. Check the operating environment temperature against the specified 0 °C to +50 °C range. Review the alarm log for any system event codes recorded before the reboot.

Stabilize the power supply by ensuring adequate current capacity and adding filtering if necessary. Improve cabinet ventilation if overtemperature is suspected. If system event logs indicate a software fault, re-download the WinCC flexible project and update the panel firmware to the latest compatible version.

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