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7
Error Diagnostics
Diagnostic procedure for system buses CAN 1 / CAN 2
76
Manual – MOVI-PLC
®
basic DHP11B.. controller
7
Error Diagnostics
7.1
Diagnostic procedure for system buses CAN 1 / CAN 2
Diagnostic problem:
Communication via system bus CAN 1 or CAN 2
does not work.
Initial status:
•
System bus CAN 1 or CAN 2 is connected correctly.
•
Communication via system bus CAN 1 or CAN 2 is programmed.
Ç
Is the bus connector plugged in?
no
Æ
[A]
yes
Ç
Response of the LEDs CAN 1 status
or CAN 2 status?
orange
Æ
[B]
green
Æ
[C]
Lights up or flashes red
Ç
System bus CAN 1 or CAN 2 is not operating
or communication of the system bus is faulty.
Ç
[A]
Ç
Check the set baud rate.
Ç
Baud rate OK?
no
Æ
[D]
yes
Ç
Make sure that terminating resistors are connected properly.
[A]
Check the bus cabling.
[B]
System bus CAN 1 or CAN 2 is being initialized.
[C]
Bus communication is OK.
Ç
Check the application program!
[D]
Correct the baud rate!
Содержание MOVI-PLC basic DHP11B-T0
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