Siemens 6AV6355-1CA47-7DL5 OP 177B

€ 1.995,00

SKU: 6AV6355-1CA47-7DL5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7DL5 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 with keypad-based operation and is part of the mid-range HMI panel family from Siemens. The OP 177B is engineered for direct integration into SIMATIC automation environments and supports both PLC-connected and standalone operation.

The 6AV6355-1CA47-7DL5 variant features a 5.7-inch STN display and is equipped with MPI/PROFIBUS DP and RS-422/RS-485 communication interfaces, enabling direct connection to SIMATIC S7 PLCs and third-party controllers. The panel includes configurable function keys, a numeric/alphanumeric keypad, and supports WinCC flexible as its configuration software. It operates on a 24 V DC supply and provides sufficient onboard flash memory for storing project data, recipes, and alarm logs. The unit is built to IEC 61131 standards and carries CE certification for industrial environments.

The OP 177B is widely deployed in manufacturing, packaging, and process automation industries where robust keypad-operated HMI panels are preferred over touchscreen alternatives. It is commonly found on machine control panels, conveyor systems, and production line equipment where operators require reliable status monitoring and parameter input. Its compact form factor and panel-mount design make it suitable for integration into standard control cabinet doors and enclosures.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LC display
Display Colors	256 colors
Resolution	320 x 240 pixels (QVGA)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485
Configuration Software	WinCC flexible 2008
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 mount
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The connection to the configured controller cannot be established or has been lost.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI project configuration. Restart both the HMI and PLC if necessary.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel lost communication with the controller after an initial successful connection.
Inspect cable integrity and connector pins on both the HMI and PLC side. Check for electromagnetic interference sources near the communication cable. Verify bus termination is correct.
Event ID: 20000: Project download error. The transfer of the WinCC flexible project to the HMI panel failed or was interrupted.
Ensure the correct transfer cable or network connection is used. Verify the panel is in transfer mode before initiating download. Check available memory on the device.
Event ID: 40000: System memory low. The available memory on the HMI panel for runtime data, alarms, or recipes is critically low.
Reduce the number of stored alarm entries or recipe data sets. Archive logs to an external storage device if supported. Optimize the project to reduce memory usage.
Event ID: 50000: Configuration error detected. The loaded project contains settings incompatible with the current firmware version or hardware variant.
Verify the project was compiled for the correct HMI panel type and firmware version in WinCC flexible. Recompile and re-download the project after correcting the configuration.
Event ID: 70000: Firmware update error. An error occurred during a firmware update procedure on the panel.
Restart the panel and reattempt the firmware update using the correct firmware file for the 6AV6355-1CA47-7DL5. Ensure stable power supply during the update process.

Frequently Asked Questions

What PLC systems is the OP 177B compatible with?

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

What software is required to configure the 6AV6355-1CA47-7DL5?

This panel is configured using Siemens WinCC flexible 2008 or later. The project must be compiled for the OP 177B device type before being transferred to the panel.

What is the supply voltage for this HMI panel?

The 6AV6355-1CA47-7DL5 operates on a 24 V DC supply voltage. A stable, regulated 24 V DC power source is required for reliable operation.

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

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

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

The OP 177B can serve as a functional replacement for older SIMATIC HMI panels such as the OP 17 and OP 27 in many applications, provided the project is reconfigured and recompiled in WinCC flexible for the OP 177B hardware.

Troubleshooting

Display remains blank after power is applied

Check the 24 V DC supply voltage at the panel power connector. Verify polarity is correct and measure actual voltage under load. Inspect the internal fuse if accessible.

Ensure the power supply provides a stable 24 V DC within the specified tolerance. Replace the power supply if voltage is out of range. If the supply is correct, the internal power board may require repair or replacement.

HMI panel shows 'No connection to PLC' or communication error at runtime

Verify the MPI or PROFIBUS DP cable is securely connected at both the HMI and PLC ends. Check bus termination resistors are enabled only at the two physical ends of the bus. Confirm the PLC address and baud rate in the HMI project match the actual PLC settings.

Correct any address or baud rate mismatches in the WinCC flexible project and re-download. Replace damaged cables or connectors. Ensure bus termination is correctly configured to prevent signal reflections.

Touchscreen or keypad inputs are not responding

For keypad issues, check for physical damage to the membrane keypad. Attempt a panel restart to rule out a software lockup. Verify the project does not have input areas configured incorrectly.

If a soft reset does not restore keypad function, perform a factory reset via the panel's Start Center menu. If physical key damage is confirmed, the keypad membrane assembly requires replacement.

Project transfer fails or panel does not enter transfer mode

Confirm the panel is set to transfer mode either via the Start Center or through an enabled remote transfer setting in the running project. Check the communication cable between the PC and the HMI panel.

Restart the panel and manually select 'Transfer' from the Start Center before initiating the download from WinCC flexible. Verify the correct COM port or network interface is selected in the transfer settings on the PC.

Panel restarts repeatedly or enters a boot loop

This may indicate a corrupted project file on the panel or a hardware fault with the internal flash memory. Attempt to access the Start Center during boot by pressing the appropriate key combination.

Boot into the Start Center and perform a panel reset to clear the corrupted project. Re-download a verified project from WinCC flexible. If the boot loop persists after a clean project download, the panel's internal memory or main board may require professional repair.

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