Precautions - Mitsubishi Electric GOT2000 Series Connection Manual

11.6 Precautions

■1. Port No. [61451]
For CC-Link IE Field Network Basic, the port No. [61451] is used as a port for device detection. When the port No.
[61451] is used for other communication functions, CC-Link IE Field Network Basic connection cannot be used.
■2. Errors that occurs in the GOT at CC-Link IE Field Network Basic connection
In CC-Link IE Field Network Basic connection, contents of the message display, causes, and countermeasures when
an error occurs in the GOT are described below.
Error code Contents of the message display
The specified device No. is out of range.
*1
322
Confirm the available device range.
The specified device No. is out of range.
*1
402
Confirm the available device range.
Settings for the GOT is not satisfied
*2
operation conditions of the communication
496
driver.
*1 May occurs even if CC-Link IE Field Network connection is not used.
*2 Occurs only when CC-Link IE Field Network connection is used.
■3. Network errors that occurs in CC-Link IE Field Network Basic connection
In CC-Link IE Field Network Basic connection, contents of the message display, causes, and countermeasures for the
following network errors are described below.
Error code Contents of the message display
The master station is duplicated in the
*1
854
same network.
*1
Parallel-off status
855
*1 Occurs only when CC-Link IE Field Network connection is used.
■4. Response performance of the GOT
The GOT carries out many object functions as well as CC-Link IE Field Network Basic connection so that the response
performance for the master station may deteriorate. If this occurs, adjust the link scan time or timeout time at the
master station side The following setting values are recommended.
Model
GT27
GT25
GT23
• A device read error occurs.
• The GOT accesses the device that is out
of range specified by the master station.
When the GOT is turned on, the master
station is powered off.
• Unusable IP address in CC-Link IE Field
Network Basic is set.
• The port No. 61451 that is used in CC-
Link IE Field Network Basic is used by
other functions.
The master station is duplicated in the
same network.
Waiting for the request from the master
station
Recommendation value of link scan time/timeout time
50 ms and more
150 ms and more
Causes
To take corrective actions, check the range
that is allocated to the master station and
range of the monitoring target device.
Start the master station, and then turn on
the GOT.
• Set the IP address within the range of
0.0.0.1 to 223.255.255.254.
• When setting the IP address and subnet
mask to each Ethernet I/F, set the
network differently from each other.
• Change the port No. of the function that
uses the port No. 61451.
Causes
Correct it so that one master station is in
the same network.
Confirm the status of the master station.
11.6 Precautions
Countermeasures
Countermeasures
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