Rockwell Automation 1788-EN2PAR EtherNet/IP and ControlNet to PROFIBUS PA Linking Device User Manual - Manual (Page 51)

Rockwell Automation Publication 1788-UM058B-EN-P - September 2014 51
Diagnostics Chapter 4
The linking device AOP scan reports NO DEVICES FOUND when
linking devices are connected.
Check the PA bus voltage in the AOP.
Check if the PA bus has tripped.
Verify that the cable used in the PA network is in compliance with section 12.8.2 of IEC61158-2 (Physical Layer
Specification).
The PROFIBUS PA cable must meet the minimum requirements that are described in
Cable Type and Minimum
Requirements on page 21 .
Verify that the shield on the power connector of the
linking device is connected to a clean, high-quality
ground.
Verify that the shield of the PROFIBUS PA connector is
connected to the shield of the cable.
Do not connect the shield at the field devices.
Verify that a low-noise power supply is feeding the linking device.
Table 4 - Field Device is Not Detected Diagnostic Checks (Continued)
Symptom Checks