Supplementary Settings - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

5 PARAMETER SETTINGS

5.4 Supplementary Settings

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The supplementary settings are included in the common parameter settings. They can
be used when more specific applications are required. The default settings should
normally be used.
The supplementary settings (common parameter settings) are required only for the
control station. The parameters are sent from the control station to normal stations
when the network starts up.
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[Setting item]
1) Monitoring time
This is used to monitor the status of the cyclic transmission between
the control station (sub-control station) and normal stations. Set the
time to determine whether or not the cyclic transmission is performed
normally.
Set a smaller value if the control time is short, the cyclic data error
detection is shorter than the default (2 s) monitoring time, and the
actual link scan time is sufficient.
Set a larger value if there are large amounts of cyclic data and the link
scan time is more than the default monitoring time due to the effect of
noise.
Set a value greater than the link scan time in 10 ms units.
If a value smaller than the link scan time is set, the data link is
disabled; thus, check the current value and set a sufficient value
without making it unnecessarily shorter.
• Valid setting time : 1 to 200
• Default
2) Parameter name
The parameter name function is used to register the names of
parameters to make it easy to understand for which system each
parameter is used.
Choose the names in such a way that the parameter to be set can
easily be recognized later.
• Number of input characters: Up to eight alphabetic characters
1)
Supplementary setting screen select button
10 ms
: 200 10 ms (2 s)
MELSEC-Q
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