Colway Solutions
Modbus Member Logo

How To: Troubleshooting Connection Problems

Symptom Possible Causes Possible Remedies
Unable to connect to device
  • Incorrect IP address
  • Device not powered ON
  • Ethernet cable to the device is loose or
    disconnected
  • Verify IP address setting in Communication Setup Window matches the device IP
  • Ping the device to see if the physical connection is OK
  • Try connecting to the device directly bypassing any router or switch (use a crossed
    Ethernet cable)
  • MDG form displays "?????" in place of data Polling has not been started in the MDG form Enable polling by checking the "Start Polling" checkbox in the MDG forms
    Privacy Policy Site Map FAQ Contact Us