Troubleshooting
Section 7-2
86
Configuration problems (continued)
Description
Possible cause
Possible remedy
READY LED is
flashing
The Master Unit is faulty.
Try to restart the Unit and do another
download. If this does not work, replace the
Unit.
ERR LED is ON
A fatal error is detected. The cause is reported
in IR n+2.06 ~ IR n+2.08
Try to solve the cause and / or restart the
Unit. If this does not help, replace the Unit
I/O data communication problems
Description
Possible cause
Possible remedy
COMM LED is OFF
The wiring is not correct.
Check IR n+3 to find out where / what the
possible problem is.
Check if the correct pins of the BUS connector
are connected, if there are no short circuits, if
the stub-lines are not too long.
The network has not been terminated correctly.
Terminate the network at the appropriate
places (see section 2-3-1).
Configuration is not correct.
Check IR n+3 to find out where / what the
possible problem is.
Check if the DP-slaves have the same station
address as in the configuration.
Check if no station address is used twice.
Check that all masters in the same network
have been configured to the same baud rate.
Check if the correct GSD-files are being used.
Check that the bus parameters have the
correct value. It is recommended to use the
default bus parameters (e.g. HSA must be
greater or equal to the highest master node
address in the network).
After changing the configuration, download
the configuration to the respective Master
Unit.
The DP-communication is inhibited. The control
bit IR n.01 of the control words is set.
Reset the control bit IR n.01
The Master Unit is faulty
Replace the Master Unit.
Summary of Contents for C200HW-PRM21
Page 1: ...C200HW PRM21 PROFIBUS DP Master Unit OPERATION MANUAL Cat No W349 E2 2...
Page 2: ......
Page 3: ......
Page 4: ......
Page 5: ...C200HW PRM21 PROFIBUS DP Master Unit Operation Manual Produced May 2000...
Page 6: ...iv...
Page 8: ...vi...
Page 12: ...x...
Page 66: ...Debug mode Section 4 4 50...
Page 98: ...Messages Section 6 4 82...
Page 108: ...Maintenance Section 7 3 92...
Page 110: ...94...
Page 112: ...96...
Page 116: ...100...
Page 120: ...104...
Page 124: ......