Delta HMI Troubleshooting & Procedures

Step-by-step procedures

• Delta DOP HMI — Communication Error 3 with the PLC — A Delta DOP HMI popping 'Communication Error 3' means it can't read device addresses from the PLC — almost always mismatched station number, baud rate or protocol, or reversed RS485 wiring. Learn the exact settings to match and how to prove the link.