Siemens 6AV6343-0AA34-0CA6 OP 177B

€ 1.995,00

SKU: 6AV6343-0AA34-0CA6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6343-0AA34-0CA6 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 STN display and is part of the OP 177B product family, which sits within Siemens' mid-range panel portfolio. It is engineered for direct integration with SIMATIC S7 PLCs and other compatible controllers via standard communication interfaces.

The OP 177B features a 5.7-inch STN LCD display with a resolution of 320 x 240 pixels and supports both touch and key-based operation, offering a membrane keypad with function keys for operator input. It communicates via MPI, PROFIBUS DP, and Ethernet interfaces, enabling flexible integration into existing automation networks. The panel runs on WinCC flexible runtime software, supports recipe management, alarm logging, and trend displays, and includes 512 KB of user memory expandable via a MultiMediaCard (MMC) slot. The operating voltage is 24 V DC, and the unit carries CE and UL certifications.

The OP 177B is widely deployed in manufacturing, packaging, and process automation environments where a compact, reliable operator interface is required at the machine level. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it suitable for a broad range of machine control applications. The panel is commonly found in conveyor systems, mixing plants, printing machines, and other industrial machinery requiring local operator control and monitoring.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD, monochrome
Display Resolution	320 x 240 pixels (QVGA)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
User Memory	512 KB (expandable via MMC)
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
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 1000: System startup completed successfully. The HMI device has booted and runtime is active.
No action required. Informational event only.
Event ID: 10000: Connection to PLC lost. Communication between the OP 177B and the configured controller has been interrupted.
Check MPI/PROFIBUS/Ethernet cabling and connector integrity. Verify PLC is powered and running. Check communication parameters in WinCC flexible project.
Event ID: 10001: Connection to PLC established. Communication has been successfully restored or initialized.
No action required. Informational event confirming successful connection.
Event ID: 40000: Tag read error. The HMI was unable to read a configured tag from the PLC.
Verify the tag address exists in the PLC program. Check for address mismatches in the WinCC flexible configuration. Ensure PLC program is running.
Event ID: 40001: Tag write error. The HMI was unable to write a value to a configured PLC tag.
Check that the target PLC data area is not write-protected. Verify tag address configuration in WinCC flexible. Confirm PLC is in RUN mode.
Event ID: 70010: MMC/Memory Card not found or not readable. The MultiMediaCard inserted in the slot cannot be accessed.
Remove and reinsert the MMC. Ensure the card is correctly formatted and compatible. Replace the MMC if the error persists.
Event ID: 20000: Operating system error. An internal software fault has occurred within the HMI runtime environment.
Perform a warm restart of the HMI panel. If the error persists, reload the WinCC flexible project via MMC or ProTool transfer. Consider restoring factory settings if unresolved.
Event ID: 60000: Project transfer active. A project download from a PC or MMC is currently in progress.
No action required during intentional transfers. If unexpected, check for unauthorized access to the HMI network or accidental transfer initiation.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6343-0AA34-0CA6) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (RJ45) interfaces, allowing connection to a wide range of SIMATIC PLCs and network architectures.

Which PLCs are compatible with the Siemens OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as other controllers supported by WinCC flexible, including third-party systems via appropriate drivers.

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

The OP 177B is configured using Siemens WinCC flexible software. Projects are transferred to the panel via Ethernet, MPI, or a MultiMediaCard (MMC).

Can the OP 177B user memory be expanded?

Yes, the OP 177B includes a MultiMediaCard (MMC) slot that can be used to expand storage for project data, recipes, and data logs.

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 suitable for installation in environments where dust and water spray may be present.

Troubleshooting

Display remains blank after power on

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

Ensure the 24 V DC supply is stable and correctly wired. If the supply is confirmed good and the display remains blank, the internal power supply board or backlight may be faulty and the unit should be sent for repair or replacement.

HMI cannot establish communication with the PLC

Check the physical cable connections on the MPI, PROFIBUS, or Ethernet port. Verify the communication parameters (baud rate, station address, IP address) in the WinCC flexible project match the PLC configuration.

Correct any parameter mismatches in the WinCC flexible project and retransfer the project to the panel. Replace the communication cable if damaged. Confirm the PLC is powered on and in RUN mode.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt a touchscreen recalibration from the HMI Start Center or Control Panel menu.

Clean the touch surface with a soft, dry cloth. Perform a touchscreen calibration via the device settings. If the issue persists after calibration, the touch panel assembly may require replacement.

Project transfer fails from WinCC flexible PC

Verify the transfer cable or Ethernet connection between the PC and the HMI. Ensure the OP 177B is set to transfer mode (Transfer button in Start Center). Check firewall settings on the PC that may block the transfer.

Place the HMI in transfer mode manually via the Start Center. Use a known-good cable or verify Ethernet connectivity. Disable PC firewall temporarily to test. Reinstall the WinCC flexible communication drivers on the PC if necessary.

Alarm messages are not displayed on the HMI

Check that the alarm tags are correctly configured in the WinCC flexible project and that the corresponding PLC bits are being set. Verify the alarm view object is present and correctly configured on the relevant screen.

Review the alarm configuration in WinCC flexible and confirm tag addresses match the PLC program. Retransfer the corrected project to the HMI. Ensure the PLC program logic is correctly setting the alarm trigger bits.

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