Error Indicators
Section 7-1
84
7-1
Error Indicators
The Unit provides the following error indicators:
•
The two red LEDs at the front of the Unit, ERR LED and DP-ERR LED
•
The status words IR n+2 and IR n+3 which are transferred from the Unit to
the PLC IR area every I/O refresh from the moment the Unit is initialised.
These indicators are described in section 5-3-2 and section 5-4.
7-2
Troubleshooting
Possible problems have been divided in the following categories:
•
PLC Error
•
Start-up problems
•
Configuration problems
•
I/O data communication problems
•
Message communication problems
PLC Error
Description
Possible cause
Possible remedy
An I/O verification
error occurred.
The current PLC configuration is not the same
as it was when the I/O table was registered.
Check the I/O table with the I/O table
verification operation and correct it if
necessary. After correcting it, perform the I/O
Table Create operation.
An I/O Unit Over
error occurred.
The Master’s Unit number setting is incorrect.
Make sure that the unit number setting does
not exceed the maximum possible unit
number.
CPU Unit models
Max Unit
number
C200HS-series
C200HE-
CPU11/32/42
C200HG-CPU33/43
C200HX-CPU34/44
9
C200HG-CPU53/63
C200HX-CPU54/64
CS1-series
F
If it does exceed the limit, adjust the Unit
number and restart the Unit.
Two units claim the same unit number.
Adjust the Unit number and restart the Unit.
A Special I/O Unit
error occurred.
The Unit is not connected properly or was
removed while the power was ON.
Turn the power OFF an check that the Unit is
connected properly and turn the power ON
again.
An I/O Bus error
occurred.
The Unit is not connected properly.
Turn the power OFF an check that the Unit is
connected properly and turn the power ON
again.
The Master Unit is faulty
Replace the Master Unit.
Содержание C200HW-PRM21
Страница 1: ...C200HW PRM21 PROFIBUS DP Master Unit OPERATION MANUAL Cat No W349 E2 2...
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Страница 5: ...C200HW PRM21 PROFIBUS DP Master Unit Operation Manual Produced May 2000...
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Страница 126: ...Authorised Distributor Cat No W349 E2 2 Note Specifications subject to change without notice Printed in the Netherlands...