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MELSEC-Q
5 PARAMETER SETTINGS
2) Maximum No. of returns to system stations in 1 scan (refer to Section
3.2.2)
Set the number of faulty stations that can return to the network in one
link scan.
• Valid number of stations
: 1 to 64 stations
• Default
: 2 stations
Since link scan time may be extended when a station error occurs if
the number of stations has been increased in the settings, carefully
change the settings.
3) With multiplex transmission (refer to Section 7.4)
Set this item when executing the multiplex transmission function.
The multiplex transmission function is used when both the forward and
reverse loops are in the normal status to speed up the transmission
rate using both loops at the same time.
This setting can be made when there are four or more remote I/O
stations.
• Default: No multiplex transmission
4) Block send/receive data assurance per station
Set these items when executing the link data separation prevention
per station in the cyclic transmission.
This allows multiple word data manipulation without interlocks.
However, the separation prevention
1 is valid only for the refresh
processing between the CPU module and the master module.
• Default: No setting for both send and receive
1: The separation prevention refers to a prevention of link data with
double word precision (32 bits), such as the current value of the
positioning module, from being separated into new data and old
data in one word (16 bits) units due to the cyclic transmission
timing.
5) END asynchronous settings (refer to Section 3.3.1 (2) (b).)
Enable this setting when link scans should be performed
asynchronously with sequence scans.
• Default: No END asynchronous settings