Epson RC90 Manual page 322

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
(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.
310
Small flat-blade screwdriver
with even thickness
Turn ON the terminating resistor
at the end of the network.
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.
RC700 / RC90 Option Fieldbus I/O Rev.14