IAI America E-Con - Manual (Page 110)

102
5. T
abletop Robot TT
4.8 Troubleshooting
When a problem occurs in the CC-Link, check the operating condition with the table below and remove the cause.
When the ERR LED lights or flashes, or when the green LED turns off abnormally during communications, check
(or reset) connections of the power and communications cable, and setting of rotary switches before turning on the
power to the controller main unit again.
ṯ: ON, ṳ: OFF, Ṳ: Flashing
RUN
(Green)
ERR
(Red)
SD
(Green)
RD
(Green)
Operating condition
ṯ Ṳ Ṳ ṯ
There is normal communications, but a CRC* error sometimes
occurs with noise.
ṯ 0.4SṲ Ṳ ṯ
Band rate or station number was changed from the band rate/station
number setting for reset cancellation.
ṯ Ṳ Ṳ ṳ
(Impossible condition)
ṯ Ṳ ṳ ṯ
With the received data having a CRC* error, there can be no
response.
ṯ Ṳ ṳ ṳ (Impossible condition)
ṯ ṳ Ṳ ṯ Normal communications
ṯ ṳ Ṳ ṳ (Impossible condition)
ṯ ṳ ṳ ṯ Local station address receiving data has not arrived.
ṯ ṳ ṳ ṳ (Impossible
condition)
ṳ Ṳ Ṳ ṯ
There is the polling response, but refresh receiving has a CRC*
error.
ṳ Ṳ Ṳ ṳ (Impossible condition)
ṳ Ṳ ṳ ṯ
Local station address receiving data has a CRC* error.
ṳ Ṳ ṳ ṳ (Impossible
condition)
ṳ ṳ Ṳ ṯ There is no link start-up.
ṳ ṳ Ṳ ṳ (Impossible condition)
ṳ ṳ ṳ ṯ
There is no local station address receiving data or it is impossible to
receive such data with noise.
ṳ ṳ ṳ ṳ
It is impossible to receive data as a result of disconnection, etc.
The power is being shut off or H/W is being set.
ṳ ṯ ṳ ṯ The power is being shut off or H/W is being set.
ṳ ṯ ṳ ṳ The power is being shut off or H/W is being set.
*CRC: Cyclic Redundancy Check
Data error detection method frequently used in the case of synchronous transmission is adopted.
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