List Of Functions - Mitsubishi Electric MELSEC-Q Series User Manual

3.3

List of Functions

(1) Cyclic transmission
Function
Communications with other stations
Remote net Ver.1 mode
Remote net Ver.2 mode
Remote net additional mode
Remote I/O net mode
Auto refresh
Scan synchronization
Cyclic data assurance
Block data assurance per station
32-bit data integrity assurance
Data link stop/restart
Remote I/O station points setting
(2) Transient transmission
Function
Communications using a dedicated
instruction
34
Description
Communications can be performed with other stations using
remote I/O (RX, RY) and remote registers (RWr, RWw).
Access to remote slave stations can be performed in the same
way as access to a module mounted on the same base unit is
performed.
The mode can be selected according to the CC-Link system
configuration. There is a mode such as the one to add a Ver.2-
compatible slave station to a system with a Ver.1-compatible
slave station.
Data can be automatically transferred between RX, RY, RWr,
RWw, SB, and SW in a master/local module and a device in a
CPU module.
Accessing a device in a CPU module on a program enables
access to RX, RY, RWr, RWw, SB, and SW.
Whether to synchronize the link scan with the sequence scan of
a CPU module or not can be selected.
Selecting the asynchronous setting shortens input transmission
delay time. Selecting the synchronous setting shortens output
transmission delay time.
This function prevents read/write data from being separated
between new and old data.
This function prevents read/write data per station from being
separated between new and old data depending on the auto
refresh timing. Because the setting is configured only on a
programming tool, a program to prevent data separation is not
required.
This function prevents read/write data in 32-bit increments from
being separated between new and old data.
Data link of the host station can be stopped or restarted using a
programming tool or SB/SW. This function is used when data
link should be temporarily stopped for maintenance or other
reasons.
When the master station is in the remote net Ver.2 mode, the
refresh points with a remote I/O station can be selected from 8
points, 16 points, and 32 points. Changing the number of points
can save the areas of the refresh device in a CPU module. (In
modes other than the remote net Ver.2 mode, only 32 points per
station can be selected.)
Description
Communications can be performed with other stations at any
timing.
Unlike cyclic transmission, direct access to buffer memory areas
in other stations can be performed. This function is used to
access data that is updated infrequently.
Reference
Page 41, Section 3.6.1
Page 125, Section 8.1.1
Page 46, Section 3.6.3
Page 48, Section 3.6.4
Page 51, Section 3.6.5
Page 55, Section 3.6.6
Page 97, Section 7.3.2
Page 115, Section 7.4.2
Page 163, Section 8.3.5
-
Page 150, Section 8.2.6
(1)
Page 153, Section 8.2.6
(2)
Page 169, Section 8.3.8
Page 320, Section 11.4.5
Page 170, Section 8.3.9
Reference
Page 127, Section 8.1.2
Page 173, CHAPTER 9