How to Upload & Download Project from Siemens OP73 via RS485 Converter ProSave or WINCC Tutorial

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Step-by-step Instructions — Upload & Download Project from Siemens OP73 via RS485

Short intro (one-liner to paste at top of description):
Learn how to safely upload (backup) and download (restore/transfer) a project from the Siemens OP73 operator panel using an RS485 (PPI) USB converter and ProSave.

Required hardware & software

Siemens OP73 operator panel (powered).

PC / Laptop with ProSave installed.

RS485 (USB ↔ RS485) converter or Siemens PPI cable.

Correct 24 V DC power for the OP73.

Windows Device Manager access to check COM port.

Quick timestamps (optional — paste in description)

0:00 Intro
0:20 Required hardware & software
1:00 Cable connection & wiring
1:40 ProSave setup & interface selection
3:00 Upload (panel → PC)
4:00 Download (PC → panel)
5:00 Tips & troubleshooting
6:00 Conclusion / CTA

Step-by-step procedure (paste this as the core of your description)

Step 1 — Power & safety

Power OFF equipment while wiring if possible.

Ensure OP73 has correct 24 V DC power connected.

Step 2 — Connect RS485 converter

Connect the RS485 converter to your PC (USB).

Wire the converter to the OP73 RS485/PPI terminal: A+ (Tx+) → A, B- (Tx-) → B.

Power ON the OP73 panel.

Step 3 — Check COM port

Open Device Manager on PC → note the COM port number assigned to the USB-RS485 converter (e.g., COM3).

Close Device Manager.

Step 4 — Configure ProSave

Launch ProSave.

Select device type OP73 (or the closest OP7x option).

Choose interface PPI / RS485.

Select the COM port you noted (e.g., COM3).

Set baud rate to match panel settings (commonly 187500 bps for PPI; if unknown, check panel settings or try lower rates).

Click Test Connection (or similar) to confirm communication.

Step 5 — Upload (backup) from OP73 to PC

In ProSave, open the Upload tab.

Click Start Upload (or Read from device).

Wait until transfer completes — do not disconnect power or cable.

Save the uploaded file on your PC (use a descriptive filename and keep a backup).

Step 6 — Download (write) project from PC to OP73

In ProSave, open the Download tab.

Browse and select the project file you want to send to the panel.

Click Start Download (or Write to device).

Wait for the transfer to finish and the panel to restart.

Verify the panel runs the expected project.

Step 7 — Verify & store backup

After download, check screens and basic functions on OP73.

Keep copies of backup files in at least two safe locations (local + cloud/external drive).

Troubleshooting quick fixes

If connection fails: confirm COM port, wiring (A/B polarity), and that only one program is using the COM port.

If frequent errors: try a different USB-RS485 adapter (some cheap adapters are unstable).

If transfer stalls: reduce baud rate to a lower setting and retry.

If ProSave cannot detect device: confirm OP73 comm settings and that the panel is powered and not in a fault state.

Pro tips

Always make a backup before making changes.

Label cables and save the OP73 communication settings screenshot for future use.

Use a short, good-quality twisted pair cable for RS485 runs to improve reliability.
#Siemens #OP73 #ProSave #RS485 #PLC #HMI #IndustrialAutomation #SiemensPLC #TIAportal #AutomationEngineer #PLCprogramming #HMItutorial #SiemensHMI #EngineeringTutorial

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