Overview; Troubleshooting Using The Led Indicators - Omron GRT1 - 27-11-2006 Operation Manual

Overview

4-1

Overview

Troubleshooting on the
GRT1-PRT Unit
4-2

Troubleshooting using the LED Indicators

60
The PROFIBUS Communication Unit and the Configuration DTM provide
extensive means for troubleshooting, which can be used to quickly determine
errors in the Unit, in the SmartSlice I/O configuration, and/or in the network.
For troubleshooting purposes, the following error indicators can be used:
• LED indicators on the front of the Unit
Three red error LED indicators and four status LED indicators show Unit
and SmartSlice I/O system status and errors.
• The Error Log collects error codes for various error events. The Error Log
can be retrieved using the GRT1-PRT DTM.
• PROFIBUS errors
DP-V1 commands provide defined response codes, which can indicate
specific errors.
This section provides a number of procedures for troubleshooting, based on
the error indicators listed above.
The figure below shows the available LED indicators on the PROFIBUS Com-
munication Unit and on the SmartSlice I/O system attached to it. The GRT1-
PRT and the SmartSlice I/O Units are operating normally when all of the LED
indicators are lit green.
RUN LED: Indicates the status of the PROFIBUS Communication Unit.
ERR LED: Indicates the status of PROFIBUS Communication Unit.
BF LED: Indicates the status of the PROFIBUS Communication
TS LED: Indicates the status of the SmartSlice I/O System.
UNIT PWR: Indicates the status of the Unit power supply.
I/O PWR: Indicates the status of the I/O power supply.
OMRON
GRT1-PRT
RUN RUN UNIT PWR UNIT PWR
5 5
ERR ERR
0 0
BF BF
x10 x10 x1 x1
TS TS I/O PWR I/O PWR
ON ON
BUS BUS
1 REGS REGS
2 NC NC
3 ADR ADR
4 BACK BACK
UNIT UNIT
+V +V
-V
+V +V
-V -V
DC24V DC24V
INPUT INPUT
Note Not shown in the figure above is a Turnback Unit. The Turnback Unit also pro-
vides I/O PWR, UNIT PWR and TS LED Indicators.
The LED indicators can be used to determine the following categories of
errors
• Power errors
• Startup errors
• SmartSlice I/O Unit errors
• PROFIBUS errors
TS LEDs: Indicate the status of each SmartSlice I/O Unit.
Section 4-1