YASKAWA CC-Link Installation Manual page 54

9 Troubleshooting
L.RUN SD RD
× × ×
× × ×
× × ∗
  
Note: SD and RD may appear to flash with slower baud rates.
Faults when Running Multiple Drives
n
The example below demonstrates how to read the LED display on the front cover of the
drive to determine the cause of a fault and the corrective action to take when multiple drives
are running from the same network. The example assumes that SW, M/S, and PRM on the
master device are all off, indicated that the master device is operating normally.
Figure 28
Power
CPU
supply
Figure 28 Connecting Multiple Drives on the Same Network
54
L.ERR
 Problem with the hardware
Data cannot be received (CC-Link
×
communications cable may be
disconnected)
The station address or communications

speed is set incorrectly.
The station address or communications
 speed was changed without cycling
power afterwards.
Master
device
YASKAWA ELECTRIC TOBP C730600 83C YASKAWA AC Drive Option SI-C3 Installation Manual
: On / : Flashing / ×: Off / ∗: Either on or off
Cause
Station 1
Drive
CC-Link
Option
Possible Solution
Try cycling the power.
Replace the CC-Link Option if the
problem continues.
Check the wiring.
Enter the proper settings and cycle
power.
Return any incorrect settings to their
original values and cycle power.
Enter the proper settings and cycle
power.
Station 2
Drive
CC-Link
Option
Station 3
Drive
CC-Link
Option