1
Publication 193-UM010A-EN-P – January 2008
Chapter
4
Troubleshooting
Introduction
The purpose of this chapter is to assist in troubleshooting the E1 Plus PROFIBUS module.
PROFIBUS Modes of Operation
The E1 Plus PROFIBUS Module has four PROFIBUS modes of operation: Power-up Mode,
Run Mode, and Configuration Error Mode.
Power-Up Mode
During power-Up Mode, the
NETWORK STATUS
LED should flash green for approximately
1/4 second, then red for 1/4 second.
If the power-up is successful, the overload relay will enter
Run Mode
.
Run Mode
In
Run Mode
, the E1 Plus PROFIBUS Module will operate as a slave device to a master device.
The
NETWORK STATUS
LED will blink green if the PROFIBUS interface is in idle mode.
When on-line, the
NETWORK STATUS
LED will turn solid green.
In the
Run Mode
, the E1 Plus PROFIBUS Module will:
•
Exchange Cyclic I/O with a master on the PROFIBUS network.
•
Respond to Acyclic (DP-V1) read- and write- services
If a communication error is detected, the E1 Plus PROFIBUS Module will either enter the
Configuration Error Mode
.
ATTENTION
Servicing energized industrial control equipment can be hazardous.
Electrical shock, burns, or unintentional actuation of controlled
industrial equipment may cause death or serious injury. For safety of
maintenance personnel, as well as other who may be exposed to
electrical hazards associated with the maintenance activities, follow the
local safety-related work practices (for example, the NFPS 70W, Part II,
Electrical Safety for Employee Workplaces,
in the United States) when working
on or near energized equipment. maintenance personnel must be trained
in the safety practices, procedures, and requirements that pertain to their
respective job assignments. Do not work alone on energized equipment.
ATTENTION
Do not attempt to defeat or override fault circuits. The cause of a fault
indication must be determined and corrected before attempting
operation. Failure to correct a control system or mechanical malfunction
may result in personal injury and/or equipment damage due to
uncontrolled machine system operation.
IMPORTANT
The E1 Plus PROFIBUS Module protection functions are still
operational even without an established network connection.