Siemens 6AV6355-1AA47-7CM1 OP 177B

€ 1.995,00

SKU: 6AV6355-1AA47-7CM1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7CM1 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens. This unit is a compact, panel-mounted human-machine interface designed for machine-level visualization and operator control tasks. It belongs to the SIMATIC HMI family and is intended for use with Siemens SIMATIC S7 and other compatible PLC platforms.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both color and monochrome display variants. It provides communication via MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, enabling direct integration into Siemens automation networks. The panel includes configurable function keys, a membrane keypad, and is configured using WinCC flexible engineering software. It supports recipe management, trend display, alarm logging, and user administration functions.

The OP 177B is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments. Its robust construction and compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs make it suitable for demanding industrial settings where reliable operator interaction is required. The panel is typically mounted in control cabinet doors or machine panels and is suited for applications requiring a cost-effective yet capable HMI solution.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels
Display Type	STN LCD
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	MPI, PROFIBUS DP, RS-422/RS-485
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), IP20 (rear)
Mounting	Panel mounting
Engineering Software	WinCC flexible 2005 or higher
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Communication error between HMI panel and PLC. Connection to the configured controller cannot be established or has been lost.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection to PLC interrupted during operation. The HMI panel has lost communication with the controller.
Inspect communication cables for damage. Verify bus termination and cable shielding. Check PLC operating state and confirm it is in RUN mode.
Event ID: 20000: Tag read error. The HMI panel cannot read 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 for correct data area allocation.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Check that the target PLC memory area is not write-protected. Verify tag address configuration in WinCC flexible and confirm PLC is in RUN mode.
Event ID: 40000: Project download error. Transfer of the HMI project from the engineering PC to the panel has failed.
Ensure the panel is in Transfer mode before initiating download. Check the communication cable between PC and panel. Verify WinCC flexible project is compiled without errors.
Event ID: 50000: Internal device error. A hardware or firmware fault has been detected within the HMI panel.
Perform a panel restart. If the error persists, perform a factory reset via the panel loader menu. If the fault continues, the unit may require hardware repair or replacement.
Event ID: 60000: Insufficient memory. The HMI panel does not have enough free memory to load or run the configured project.
Reduce the project size by optimizing graphics, recipes, or alarm lists. Perform a complete panel reset and reload the project. Check for memory fragmentation by restarting the panel.

Frequently Asked Questions

Which engineering software is required to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2005 or later versions. Projects are transferred to the panel via MPI, PROFIBUS DP, or a direct serial connection from the engineering PC.

Which Siemens PLCs are compatible with the OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, S7-400, and S7-1200 PLCs, as well as SIMATIC 505 and certain third-party controllers via configurable communication drivers in WinCC flexible.

What communication interfaces does the 6AV6355-1AA47-7CM1 support?

This panel supports MPI and PROFIBUS DP communication, as well as RS-422 and RS-485 serial interfaces. These allow direct connection to Siemens PLCs and other compatible automation controllers.

What is the supply voltage for the OP 177B?

The OP 177B requires a 24 V DC power supply. The permissible voltage range is typically 19.2 V DC to 28.8 V DC, and the power consumption is a maximum of 10 W.

Can the OP 177B be used as a replacement for an OP 170B?

The OP 177B is the successor to the OP 170B and is largely compatible in terms of form factor and functionality. Existing WinCC flexible projects may require minor adaptation, but the panel cutout dimensions are compatible for direct replacement.

Troubleshooting

Display remains blank after power is applied

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

Correct the supply voltage if out of range. Replace the power supply unit feeding the panel if voltage is absent. If supply voltage is correct and display remains blank, the internal power supply board or backlight inverter may require replacement.

HMI panel fails to establish communication with the PLC

Verify the MPI or PROFIBUS DP address configured in the WinCC flexible project matches the address set on the PLC. Check bus cable connections, termination resistors at both ends of the bus, and cable shielding continuity.

Correct any address mismatches in the project configuration. Replace damaged bus cables and ensure proper bus termination is installed. Confirm the PLC is powered and in RUN mode before retrying communication.

Touchscreen or function keys are unresponsive

Check whether the panel is in Transfer mode, which disables normal operation. Attempt a panel restart. If keys are physically damaged, inspect the membrane keypad connector on the main board.

Exit Transfer mode via the panel loader if active. Restart the panel to clear any software lock. If the membrane keypad is physically worn or damaged, replace the keypad assembly.

Project download from PC to panel fails repeatedly

Confirm the panel is set to Transfer mode before initiating the download. Check the communication cable between the PC and the panel for continuity. Verify that the correct communication port and transfer settings are selected in WinCC flexible.

Switch the panel to Transfer mode via the Start Center menu. Use a known-good MPI or serial transfer cable. Recompile the WinCC flexible project and retry the transfer. If the issue persists, perform a factory reset on the panel and attempt the download again.

Alarm messages are not displayed or are missing on the panel

Check the alarm configuration in the WinCC flexible project to confirm alarm tags are correctly mapped to PLC addresses. Verify that the PLC is writing the expected bit or value to trigger the alarm.

Correct any tag address mismatches in the alarm configuration. Ensure the PLC program is setting the alarm trigger bits as intended. Reload the corrected project to the panel and test alarm triggering from the PLC side.

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