YASKAWA
SIEP C730600 83E CC-Link Technical Manual
37
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Option LED States
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How to Check for Errors on LED Lamps
A - 1000-Series
B - GA500, GA700, and GA800
Figure 9.1 Option LED Labels
Table 9.1 Option LED Display
L.RUN
Lights ON when receiving data normally Lights OFF when timed out wanting to receive
SD
Lights ON when sending data
RD
Lights ON when receiving data
L.ERR
Lights ON when a station address is CRC Error or Abort Error.
Note:
If communication stops while the drive is running, answer these questions to help fix the problem:
•
Is the drive properly connected to the option?
•
Is the CC-Link communication cable properly connected to the option? Is it loose?
•
Is the PLC program properly working? Is the PLC CPU stopped?
•
Did a momentary power loss interrupt communications?
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Faults that Occur with a Single Drive
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 corrective action.
Figure 9.2 Connecting a Single Drive
Table 9.2 LED Fault Display for CC-Link Option with a Single Drive
L.RUN
SD
RD
L.ERR
Cause
Possible Solutions
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×
Normal communications
-
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Error has occurred but communication is normal.
Remove the source of electrical noise interference.
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×
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Problem with the hardware
•
Try cycling the power.
Replace the CC-Link Option if the problem
continues.
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×
×
Problem with the hardware
•
Try cycling the power.
Replace the CC-Link Option if the problem
continues.
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×
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□
CRC error with the data received, and no response
can be sent
Remove the source of electrical noise interference.
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×
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×
No station address received
Check the PLC program and the operation where
the problem occurred.
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×
×
□
Problem with the hardware
•
Try cycling the power.
Replace the CC-Link Option if the problem
continues.
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×
×
×
Problem with the hardware
•
Try cycling the power.
Replace the CC-Link Option if the problem
continues.
×
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□
A response was received after polling, but a CRC
error occurred when the reflex data was checked.
Remove the source of electrical noise interference.
×
○
○
×
Problem with the hardware
•
Try cycling the power.
Replace the CC-Link Option if the problem
continues.