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4. Troubleshooting (PROFIBUS DP)
4.2.3.2 Loose Connector and Signal Wire
Check for the connections of the following parts on the connector and cable.
(1) Connection of connector and signal wire
Small flat-blade screwdriver
with even thickness
(2) Connection of connector and unit
4.2.3.3 Noise Intrusion
Verify how error occurrence condition changes while taking the following countermeasures.
♦ Ground of FG wire
Normal Grounding: Peel the cable covering and ground the FG wire.
Peel the cable covering and
secure the cable with FG clamps.
Secure the clamps to the
intermediate plate of the board
with screws to ground the shield.
Turn ON the terminating resisto
r
at the end of the network.
132 Fieldbus I/O Rev.6