Siemens 6AV6355-1CA47-7CM0 OP 177B

€ 183,19

SKU: 6AV6355-1CA47-7CM0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CM0 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens. This unit is a mid-range operator panel designed for machine-level visualization and control tasks, offering a color display with touch and key-based operation. It is part of the SIMATIC HMI product line, which is widely used in industrial automation environments for human-machine interface applications.

The OP 177B 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 both a touch screen and membrane keypad for flexible operator input. The panel supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) communication interfaces, enabling integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. Configuration is performed using WinCC flexible software, and the unit includes 512 KB user memory for project data storage. The operating voltage is 24 V DC, and the panel carries IP65 protection on the front face for use in demanding environments.

The OP 177B is commonly deployed in machine building, packaging machinery, conveyor systems, and process automation applications where a compact yet capable operator interface is required. Its combination of touch and key operation makes it suitable for environments where gloved operation or precise key input is preferred. The panel's PROFIBUS DP connectivity makes it particularly well-suited for integration into existing SIMATIC automation architectures.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Display Type	STN color
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP)
User Memory	512 KB
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B
Configuration Software	WinCC flexible 2005 or higher

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The configured connection cannot be established.
Check the MPI/PROFIBUS or Ethernet cable connections and verify the PLC address settings in the WinCC flexible project match the physical configuration.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Inspect the communication cable for damage, verify PLC is powered and running, and check for address conflicts on the network.
Event ID: 20000: Project download error. The project could not be transferred to the HMI panel.
Verify the transfer cable connection, ensure the panel is in transfer mode, and confirm the WinCC flexible project is compatible with the OP 177B firmware version.
Event ID: 40000: System memory low. Available memory for runtime operation is insufficient.
Reduce the project size by removing unused screens or variables, and perform a full project download to clear fragmented memory.
Event ID: 50000: Firmware update error. The firmware transfer to the device was not completed successfully.
Restart the firmware update procedure using the correct firmware version for the OP 177B via ProSave or WinCC flexible.
Event ID: 70000: Tag read/write error. A configured variable could not be read from or written to the PLC.
Check the PLC data block and address configuration in the WinCC flexible project. Ensure the referenced memory areas exist in the PLC program.
Event ID: 60000: Illegal system state detected. The HMI panel has encountered an internal runtime error.
Perform a warm restart of the panel. If the error persists, perform a factory reset and reload the project from WinCC flexible.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6355-1CA47-7CM0)?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. Ethernet connectivity also allows integration with S7-300/400 PLCs equipped with Ethernet-capable CPU modules or communication processors.

What software is required to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. The ProSave tool can be used for firmware updates and backup/restore operations independently of WinCC flexible.

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

The panel features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA) and supports up to 256 colors.

Does the OP 177B support both touch and key operation?

Yes, the OP 177B is equipped with both a resistive touchscreen and a membrane keypad, allowing operators to interact via touch input or physical keys, which is useful in environments where gloved operation is required.

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, suitable for typical industrial machine environments.

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 that the voltage is within the specified range and that the connector is firmly seated.

If supply voltage is correct, perform a reset by holding the reset button. If the display remains blank, the internal power supply board or backlight inverter may require replacement.

HMI panel cannot establish communication with the PLC

Verify the MPI or PROFIBUS DP address configured in the WinCC flexible project matches the physical DIP switch or software address settings on the PLC. Inspect the communication cable for continuity and correct pin assignment.

Correct any address mismatches in the project configuration and re-download the project. Replace the communication cable if continuity faults are found. Ensure termination resistors are correctly set on the PROFIBUS network.

Touchscreen does not respond or responds inaccurately

Check whether the touchscreen responds at all by attempting input in multiple areas. An inaccurate response may indicate a calibration drift, while complete non-response may indicate a hardware fault.

Recalibrate the touchscreen via the panel's Control Panel settings in the Start Center. If recalibration does not resolve the issue, the touchscreen overlay may need to be replaced.

Project download fails during transfer from WinCC flexible

Confirm the panel is set to Transfer mode via the Start Center. Check the Ethernet or MPI cable connection between the engineering PC and the panel. Verify the WinCC flexible project is compiled without errors.

Switch the panel to Transfer mode manually, re-establish the cable connection, and retry the download. Ensure the firmware version on the panel is compatible with the WinCC flexible version being used.

Panel repeatedly restarts or shows a runtime error on startup

This may indicate a corrupted project file on the panel or a firmware mismatch. Attempt to access the Start Center during the boot sequence by pressing the appropriate key combination.

Use ProSave to perform a backup of any recoverable data, then execute a factory reset from the Start Center. Reload the correct firmware version and re-download the WinCC flexible project.

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