Diagnostics and troubleshooting Deltabar PMD78B PROFINET with Ethernet-APL
64 Endress+Hauser
11 Diagnostics and troubleshooting
11.1 General troubleshooting
11.1.1 General errors
Device not responding
• Possible cause: Supply voltage does not match the specification on the nameplate
Remedial action: Apply the correct voltage
• Possible cause: The polarity of the supply voltage is wrong
Remedial action: Correct the polarity
• Possible cause: The cables do not contact the terminals properly
Remedial action: Check the electrical contact between cables and correct if necessary
• Possible cause: Load resistance too high
Remedial action: Increase the supply voltage to reach the minimum terminal voltage
No values visible on the display
• Possible cause: Graphic display is set too bright or too dark
Remedial action: Increase or decrease the contrast with the Contrast display parameter
Navigation path: System → Display → Contrast display
• Possible cause: The plug of the display cable is not connected correctly
Remedial action: Connect the plug correctly
• Possible cause: Display is defective
Remedial action: Replace the display
Display cannot be operated
Display cannot be operated
Possible cause: Operation is disabled for security reasons
Web server not available
Web server not available
Possible cause: The Web server is disabled for security reasons
Communication via CDI interface not working
• Possible cause: Wrong setting of the COM port on the computer
Remedial action: Check the setting of the COM port on the computer and correct it if
necessary
• CDI interface not available
Possible cause: The CDI interface is disabled for security reasons.
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