Rockwell-automation 1788-EN2PAR EtherNet/IP and ControlNet to PROFIBUS Manual de usuario descargar pdf (Pagina 53)

Rockwell Automation Publication 1788-UM058B-EN-P - September 2014 53

Diagnostics Chapter 4

The field device indicates red in the AOP.

The field device indicates Err on LCD of module.

No process variable is found in the process variable tag of the field

device.

Launch the DTM

and see if the

device has any

errors.

Check the scope trace in the AOP:

• Is there any noise on the bus?

• Is the slew rate ok? The wave

must not be triangular.

• Is the signal amplitude

modulated? This condition

typically indicates noise on the

shield.

• Is the voltage level ok?

Has the environment changed?

Is there a new source of noise, such as drives, motors, HT cables, or other noise sources?

Has the PA configuration been changed?

Have any new field devices been added to the bus?

Table 6 - Field Device Faults Diagnostic Checks (Continued)

Symptoms Checks

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 75 76

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Rockwell-automation 1788-EN2PAR EtherNet/IP and ControlNet to PROFIBUS Manual de usuario Pagina 53