Omron TJ1-MC04 - PROGRAMMING 1

Troubleshooting
PROGRAMMING MANUAL 303
Revision 3.0
7.3.2 I/O data communication problems
/i
Indication Problem Solution
COMM LED is off
and BF LED is on
The PROFIBUS configuration is
incorrect, there is no communica-
tion with the master.
• Check that the TJ1-PRT has
the same station address as
in the configuration of the
master.
• Check that no station
address is used twice.
The PROFIBUS wiring is not cor-
rect.
• Check that the correct pins
of the CN1 connector are
connected.
• Check that there are no
short circuits or line interrup-
tion.
• Check that you use the cor-
rect cable type.
• Check that the stub lines are
not too long.
You have not properly terminated
the PROFIBUS network.
Terminate the PROFIBUS net-
work at the appropriate places.
The PROFIBUS master unit is
defective.
Replace the master unit.
The TJ1-PRT is defective. Replace the TJ1-PRT.
COMM LED is off
and BF LED is
flashing
The PROFIBUS configuration is
incorrect, there is no communica-
tion with the master.
• Check that you use the cor-
rect GSD file in the master.
• Check the configuration and
the parameter data of the
slave.
• Check that the network has
been configured to commu-
nicate at the baud rate sup-
ported by the TJ1-PRT.
You have not selected configura-
tion data for the slave.
Check the configuration at the
master.
The TJ1-PRT is defective. Replace the TJ1-PRT.
Indication Problem Solution
I52E-EN-03.book Seite 303 Freitag, 29. Juni 2007 11:55 11