Mitsubishi MELSEC-Q Series User Manual page 136

6 PARAMETER SETTINGS
Setting item
Sets the type of the connected remote station, local station, intelligent device
station and standby master station.
Station information
Specifies the assignments of buffer memory sizes during transient transmission
to a local station, a standby master station and an intelligent device station.
Assignments of
communication buffer
and automatic update
buffer
6 - 4
Table 6.1 Parameter setting items (2/2)
Default value
Setting range
Station type
Number of occupied stations : occupies 1 station to occupies 4 stations
Station number
Default values
Send buffer size
Receive buffer size
Automatic update buffer size : 80
Setting range
Communication buffer size : 0
Automatic update buffer
POINT
(1) For the communication buffer size, specify the size that is calculated by adding
seven words to the data size to be sent or received.
For the automatic update buffer size, specify the size required for each
intelligent device station.
(2) When performing the parameter setting with the dedicated instruction,
"Standby master station specification" cannot be set.
(3) The network parameters other than operational settings and mode setting are
also made valid when the PLC CPU is switched from STOP to RUN.
Description
: Remote I/O station, occupies 1 station,
station number 1 to Remote I/O station,
occupies 1 station, station number 64
: Remote I/O station, remote device station,
intelligent device station
: 1 to 64
: 40 (64) (word)
H
: 40 (64) (word)
H
(128) (word)
H
(0) (word) (Not specified), or 40
H
(word) to 1000 (4096) (word)
H
However, the total communication buffer size
must be 1000 (4096) (word) or less.
H
: 0 (0) (word) (Not specified), or 80
H
(word) to 1000 (4096) (word)
H
However, the total automatic buffer size must
be 1000 (4096) (word) or less.
H
MELSEC-Q
Reference section
———
(64) ———
H
(128)
H
6 - 4