Siemens 6AV6355-1DA00-0DL7 OP 77B

€ 1.995,00

SKU: 6AV6355-1DA00-0DL7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1DA00-0DL7 is the OP 77B operator panel, part of the SIMATIC HMI Basic Panels product family. This compact panel-mount operator panel is designed for straightforward machine-level visualization and control tasks, providing a monochrome display with keypad-based operation. It belongs to the SIMATIC HMI generation and is manufactured by Siemens as part of their automation portfolio.

The OP 77B features a 4-line STN monochrome LCD display capable of showing text and simple graphics, with a resolution of 160 x 64 pixels. It is equipped with a membrane keypad for operator input, including function keys and system keys. The panel communicates via MPI and PROFIBUS DP interfaces, enabling direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. Configuration is performed using WinCC flexible software, and the unit operates on a 24 V DC supply.

The OP 77B is widely used in manufacturing, machine building, and process automation applications where a cost-effective, robust operator interface is required. Its compact form factor and keypad-based operation make it suitable for environments where touchscreen panels are impractical, such as dusty or high-vibration industrial settings. Typical installations include conveyor systems, packaging machinery, and general-purpose machine control panels.

Technical Specifications

Display Type	STN monochrome LCD
Display Resolution	160 x 64 pixels
Display Size	4-line text display
Input Voltage	24 V DC
Voltage Tolerance	19.2 V DC to 28.8 V DC
Power Consumption	Approx. 3.5 W
Communication Interface	MPI, PROFIBUS DP
Configuration Software	WinCC flexible 2005 or higher
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	SIMATIC HMI OP 77B

Common Error Codes and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The panel cannot establish or maintain a connection to the configured controller.
Check MPI or PROFIBUS DP cable connections and termination 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. The panel lost communication with the configured controller.
Inspect the communication cable for damage or loose connectors. Check bus termination and cable shielding. Restart both the HMI panel and the PLC if the connection does not recover automatically.
Event ID: 20000: Project download error. The configuration project could not be transferred to the panel successfully.
Verify the PC-to-panel connection (MPI or PC/PPI cable). Ensure WinCC flexible is using the correct transfer settings and that the panel is in transfer mode before initiating the download.
Event ID: 40000: Operating system error or internal system fault detected on the HMI panel.
Perform a panel restart. If the fault persists, reload the operating system using the ProSave tool via the MPI interface. Check for hardware damage if the issue recurs.
Event ID: 50000: Configuration or project data on the panel is corrupt or incompatible with the current operating system version.
Re-download the project from WinCC flexible. Ensure the WinCC flexible version used for the project matches the panel firmware version. Update the panel OS if necessary.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms has exceeded the panel's alarm buffer capacity.
Acknowledge and clear existing alarms on the panel. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm generation or increase acknowledgment frequency.
Event ID: 30000: Tag read/write error. The panel was unable to read from or write to a configured PLC tag.
Verify that the PLC tag addresses configured in WinCC flexible match the actual PLC program. Check that the PLC data blocks or memory areas referenced are accessible and not write-protected.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B?

The OP 77B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It can also communicate with S7-200 via PPI protocol.

What software is used to configure the OP 77B?

The OP 77B is configured using Siemens WinCC flexible 2005 or later versions. Projects are downloaded to the panel via the MPI interface using a suitable PC adapter cable.

What is the supply voltage for the 6AV6355-1DA00-0DL7?

The panel requires a 24 V DC supply voltage, with an acceptable range of 19.2 V DC to 28.8 V DC.

What is the front panel protection rating of the OP 77B?

The front panel of the OP 77B carries an IP65 protection rating, making it resistant to dust and water jets when correctly installed in a panel cutout.

Can the OP 77B display graphics or only text?

The OP 77B can display both text and simple bitmap graphics on its 160 x 64 pixel monochrome LCD, though its primary use case is text-based operator messaging and status display.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the voltage is within the 19.2 V to 28.8 V range. Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. Replace any blown fuse with the correct rating. If the display remains blank with correct supply voltage, the internal power supply or display unit may require replacement.

Panel shows 'No connection to PLC' or communication error on startup

Check the MPI or PROFIBUS DP cable connections at both the panel and PLC ends. Verify bus termination is correctly applied at both ends of the bus segment. Confirm the PLC station address matches the address configured in the HMI project.

Reseat or replace the communication cable. Correct bus termination using appropriate termination resistors. Update the HMI project in WinCC flexible to match the correct PLC address and re-download the project.

Project download fails or transfer cannot be initiated

Confirm the panel is set to transfer mode before initiating the download from WinCC flexible. Check that the correct PC adapter (e.g., PC Adapter USB or MPI cable) is selected in the transfer settings.

Restart the panel and manually select transfer mode from the start center menu. Verify the COM port or USB adapter settings in WinCC flexible match the connected hardware. Re-attempt the project download.

Function keys do not respond or produce incorrect actions

Check the project configuration in WinCC flexible to confirm the correct function key assignments are programmed. Test individual keys to determine if the issue is with a single key or all keys.

Re-download the project with corrected key assignments if a configuration error is found. If a specific key is physically unresponsive, the membrane keypad may be worn or damaged and should be replaced.

Panel repeatedly restarts or enters an error loop after project download

Verify that the WinCC flexible project version is compatible with the panel's current operating system version. Check for any unsupported objects or communication drivers in the project.

Update the panel operating system using ProSave to match the WinCC flexible version used for the project. Simplify the project if unsupported features are detected, then re-download the corrected project.

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