When The Link Led On The Bridge Module Does Not Flash; When The Link Led On The Slave Module Does Not Flash - Mitsubishi Electric CC-Link-AnyWire Bitty Bridge User Manual

12.1.3

When the LINK LED on the bridge module does not flash

If the LINK LED is on in red and the "SET" LED is off, check the following:
1. Isn't DP/DN signal line disconnected or short-circuited?
2. Isn't there any reverse connection or loose screw?
3. Has the automatic address detection operation properly performed?
4. Is the slave module in normal state?
(Refer to the troubleshooting for the slave module.)
Page 48, Section 9.1
*1
12.1.4

When the LINK LED on the slave module does not flash

The applicable module may be in failure.
Please consult your local Mitsubishi
representative.
The LINK LED on the
bridge module does not flash.
Is the LINK LED on in red?
YES
Is the SET LED off?
YES
The LINK LED on the
slave module does not flash.
Is the external
NO
power supply voltage
for the slave module within a
specified range?
YES
NO
Was the transmission cable
wiring already checked?
YES
NO
The applicable module may be in failure.
Please consult your local Mitsubishi
representative.
NO
If the LINK LED is on in red and the SET LED
flashes with approx. 1-second intervals, check
the following:
1. Isn't DP/DN signal line short-circuited?
2. Isn't there any reverse connection or loose
screw?
3. Is the power supply voltage 21.6V or higher?
4. Is the power supply voltage stable?
(Doesn't a momentary power failure occur?)
*1
Adjust the voltage for external power supply to
within a specified range.
Check the following:
1. Isn't DP/DN transmission cable short-circuited?
2. Isn't DP/DN transmission cable disconnected?
3. Isn't there any reverse connection or loose
screw?
CHAPTER 12 TROUBLESHOOTING
12
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