Executing The Automatic Address Detection Function; Monitoring Operation - Mitsubishi Electric MELSEC-Q Series User Manual

5.1.1

Executing the automatic address detection function

Use the SET switch or Automatic address detection command output (Yn1) to operate the automatic address
detection.
Using the SET switch
Procedure
1.
Check that all of the slave modules are operating normally.
2.
Keep pressing the SET switch on the master module until the SET
LED (green) turns on.
3.
When the SET LED turns on, flashes, and turns off, the ID (address)
has been stored.
Using Automatic address detection command output (Yn1)
Procedure
1.
Check that all of the slave modules are operating normally.
2.
Turn Automatic address detection command output (Yn1) from OFF to
ON. (For details on Automatic address detection command output
(Yn1), refer to Page 41, CHAPTER 4.)
3.
When the SET LED turns on, flashes, and turns off, the ID (address)
has been stored.
When an error such as a short circuit has occurred in the AnyWire DB A20, when the power is turned on, or when the
module is reset, the automatic address detection function cannot be executed for approximately 5 seconds.
5.2

Monitoring Operation

Registered IDs (addresses) are sent in order. If the slave module does not reply, a disconnection is notified.
The ALM LED turns on and D/G terminal disconnection (Xn4) turns on when a disconnection occurs.
This error information is maintained until the power is turned off or until Disconnection flag reset command output
(Yn0) is turned on.
To reset the on state of the ALM LED and D/G terminal disconnection (Xn4: ON) detected during operation, reset the power
supply of the master module or turn on Disconnection flag reset command output (Yn0) after eliminating the cause.
The automatic address detection function also clears the display and the flag. However, if an unresponding module exists, its
ID (address) is not registered; therefore, it is not monitored.
CHAPTER 5 MONITORING FUNCTION
5
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