IAI CC-Link, Operation Manual

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10.2 Troubleshooting
Statuses of failures are classified into the following three types.
a. Abnormality of gateway unit
b. Abnormality of SIO communication
c. Abnormality of CC-Link
10.2.1 Abnormality of gateway unit
There occurs a control abnormality of the gateway unit if the RUN (Green) on the gateway status indication
LED is unlit or G.ER (Red) is lit in a state that the determined power is supplied.
★
Check the power voltage of the gateway unit. If the determined power is supplied, once turn OFF the
power and turn on again. If the RUN (Green) is unlit or G.ER (Red) is lit even in that case, contact IAI.
10.2.2 Abnormality of SIO communication
When the SIO communication is abnormal, the T.ER (Red) on the gateway status indication LED is lit.
Further, communication status can also be checked by the TxD (Green) and RxD (Green) on the LED.
For details, refer to the item of [2] SIO communication status LED in “2.3 Name and function of each part.”
★ Check the following contents.
[1] Check if wiring for the communication line is correctly connected.
[2] Check if CFG13 - 0 (link connecting axis selection) is correctly performed. For details, refer to the
input and output signal list in the “6.1 Gateway control signal.”
[3] Check if GND (ground=0V) levels of the power of the robo-cylinder controller and gateway unit are on
the same line. Particularly, when the levels are connected by link, pay attention to whether all GND
(ground) are common.
[4] Check if the terminal resistors are correctly connected, and resistance values are correct.
[5] Check if the power line which becomes a noise source is not wired near wiring of the SIO
communication line.